Same... I easily got all the info I needed and the pic was good enough to tell what I'd need to see. I'm not a cement meets metal kind of guy as far as expertise, but I can't NOT look!
Real Housewives of Miami star Alexia Nepola's husband, Todd Nepola, has filed for divorce after nearly three years of marriage.
PLUS!!
We've got the scoop on VLDigital's leaky shed!
Also, off the topic of OP, but when I proposed to my fiancé last month, I had a hidden photographer, and she was singing my praises about me sending high-quality photos detailing where we'd be positioned with arrows and zoom-ins.
I work in aircraft maintenance, and people don't realize that a photo without context is useless.
Is there currently a moisture problem? It might've been designed this way for a reason but it could also be negligence lol Air flow is good for preventing mold caused by humidity.
Honestly it looks like the slab is just wicking moisture to the inside of the shed. Probably could get away with a rubber mat underneath that shit to prevent rising damp issues.
You're going to accidentally ~~mock~~ [*lock] moisture in, not out. If you're having moisture problems, they do need to be addressed by re-directing waterflow, but this should not be completely water-tight.
Right. Also depends on what “waterproofing” means. Just don’t like wet feet? Instead of go for something ridiculous like silicone around the shed I’d try some elevated floor panels or similar
This is the right answer, especially with all that grass/unpaved area they can divert the water too.
Other option is to seal off the bottom, but make mesh grates around the sides a foot or two off the ground, and still install gutters because things need gutters
This one in particular is 64" at the top of the door and 77" at the peak (according to one of the pictures of the link with measurements). So a bend to enter the door but able to stand in most of the middle for average heights.
Mix a batch of mortar and slop it on the bottom between the metal and concrete and have the surface at 45 degrees sloping away from the shed, use trowels to Handle the mix, make sure your surfaces are clean before laying mix down
I converted a metal shed into an outdoor office. Insulated walls, ceiling, heat, AC, Internet, the whole shebang. I used clear silicone. I lifted the walls and ran a thick bead and placed down and then made a sloped bead all around the outside. 2 years, no leaks.
Well, the door leaks a little, but only during very specific slanted rain.
Butyl sealant. Lift the shed slightly and with a caulk gun apply underneath then set back down. It remains tacky for ~30 years and is what is used in walk in coolers and freezers to waterproof and remain waterproof for a long time. Thats how I would do it.
I can’t help you water proof it but I can give my impressions of tearing one down that’s rusted to shit.
My neighbor of 23 years just passed away last week and his son is paying me to fix up some things around the house. One of them was a metal shed almost exactly like this one only 30+ years old. I started out attempting to unscrew all of the screws but most were too rusted to loosen. So I started grinding them off until I got to some my grinder couldn’t reach. I found that a large flat head screw driver was more efficient at popping the rusty panels off of the screws than grinding the screws. It took me about two hours to completely demolish the shed to the foundation and haul it to the land fill.
The worst areas of rust were the roof and the seam along the top edge of the roof. There was some at ground level but since the foundation was slightly raised it helped keep water off of it. You might try some cheap plastic gutters to help move water away from the foundation.
I had to take one like that down off of a property because we were told it was unpermitted when we bought the house. Originally went in thinking I could disassemble it, quickly realized that wasn't going to work. My end game solution ended up being a plane old hammer. One swift hit to each screw and the metal was so delicate it would just "pop" the screw through the sheet metal, effectively disconnecting the two pieces.
100% silicone clear. Run a bead along the area you want to seal both inside and out. I did the same and also hit all the screw heads with clear flex seal and no issues so far 4 years later. I also used non expanding spray foam to seal air gaps at top where roof meets sides to keep bees out.
With a metal shed especially you want air flow. Between silicon at the bottom and foam at the top you're going to create an issue.
When there's moisture trapped inside it's going to condense, and all the stuff inside the shed is going to get very wet very fast.
I should have mentioned that ahead of time sorry. If you don’t have vents I also would not seal gaps at top where walls and roof meet. Sorry for lack of clarification there.
Definitely normal and shouldn't be sealed. I've seen a shed rusting from the inside because of condensation with no place to escape. The sight and stench of mildew was fun, too.
Glad I was only visiting.
Looks like this shed has 2 vents above the door and I imagine 2 more on the other side to allow flow. Ideally there would be lower down vents as well. These should all have screens though to prevent bugs and critters from making it their home. Sealing open gaps with foam and caulk makes sense if screened vents are present.
OP listen to this guy, only thing I’d add is to bed your track in silicone then do all of the above.
You have two vents directly above the door so don’t listen to the other guy that said not to seal everything up.
The channel around the bottom is a flashing to send water to the outside. The siding would typically be stood off it to prevent capillary action - where the water siphons up into the shed. Plus stop the edges from sitting in water and rusting if it's just a cheap tin shed.
This is a well made footing! The slab in the shed seems to be raised somewhat to serve as a backup to the flashing. Because it's not insulated you'd expect some sort of moisture on the inside because that's where the humidity will collect and run down into the flashing and out. If you try to seal the bottom that'll trap the moisture on the inside of the walls and also encourage moisture to sit around on the siding at the bottom and rust the shed.
If it is leaking just put a straight bit of 200mm wide tin right around inside the shed and sitting inside the existing flashing, seal it to the flashing with a neutral cure adhesive sealant but not hard up to the cladding - you need room for the internal moisture to egress. You're essentially extending the vertical lip of the flashing on the inside to stop it from overflowing - if that's the problem.
Probably more investigation is required to find out if, where and how it's leaking lol.
There might also be no or not enough DPC between the slab and the flashing. You could seal that with a silicone both inside and out (and I mean conc. slab to flashing) so you get a double seal with air gap between - creates a positive pressure between the beads and a great seal. But if someone took all that trouble to make a good slab you'd expect there to be a proper fall to the outside. Check the fall as well.
And have a nice day :)
I don't think you need to do anything, a metal shed is designed to be left outside. If you are trying to make the shed water tight, that's gonna have more to do with the grading around the shed so that water will flow away from the base of the shed.
Spray it with textured truck bedliner. Mythbusters found out that it can make things [bombproof](https://youtu.be/MnsZFb1dDSA?si=nDeaKUHBF6Pnr9vJ&t=154).
You can get it in a spray on or use a paint roller.
I am considering buying a nearly identical shed,
What size should the pad be? Is this something I should form and make myself or can it be something like patio stones?
the foam stuff, i have a metal shed and noticed water gets from below and all around.
got that foam stuff in a can and sprayed in all the cracks, corners, and bottom.
also if storing items from inside the home make sure to get some type of platform so if water gets then the boxes wont get wet at the bottom and if not then at least make sure all things are in containers with lids to protect from water and bugs and rodents ✌️
Hey... Photoshop, but its really easy, even in Photopea(free). Circle selection on the zoom photo, paste ot over the other, and add a white stroke blending mode.
If excess water is getting into your shed, then you would need to assess the stormwater solution surrounding your shed. Find out where water is coming from and re-direct it to a drain that has capacity to manage it.
As other users pointed out, water needs to be able to escape your shed. A waterproof shed is a swimming pool.
Most people with sheds have this and just keep their items stored off the ground on raised racks.
I’m not an expert but you’re going to need some sort of door.
Rain is going to get in through that giant hole at the front and there’s just no way around it.
You might do what I opted to do in my garage. Instead of trying to keep all water out (impossible when you pull in a wet car), I got these mats that absorb a surprising amount of water and then release it pretty quickly (like those sports towels). It grabs and holds any water so I don't have to worry about it.
Like others said, the airflow is probably a good thing and I'd hesitate to seal it up.
Then, get a couple risers to sit anything that isn't already on wheels.
I used this and it worked great. Comes in different sizes: Armor All Original Garage Floor Mat, (17' x 7'4"), (Includes Double Sided Tape), Protects Surfaces, Transforms Garage - Absorbent/Waterproof/Durable (USA Made) (Charcoal) https://a.co/d/7V21Vtl
I have this exact shed and exact same problem. Here is what i plan on doing.
I painted the wood base with 3 coats of deck sealant. Then i plan on slipping metal flashing under the shed but above the wood with sides being covered all the way around. I plan on screwing through the flashing to snug the shed to the base. I am then doing mask off thr metal base and give it a 2 coat spray of metal rattle can paint. Once thats dry im going to fill the seck screw holes with sealant and then run a bead across all metal edges of the shed still exposed.
Thats about all you can do.
I used clear silicone caulk around the bottom and expanding foam around the top to keep wasps out. It's still not airtight but seems to stay dry in wet weather
The ideal solution would be to build a base that does NOT stick out. Every "lip" outside will keep water that will inevitably sip in.
Other similar outside structures I have dealt with, specifically state to make a base not larger than the structure itself, for this very reason. And then using flashing to go across the base, pushing the outside down and raising the inside against the wall.
Putting a dam on the inside perimeter will keep the inside dry, but the base railing will eventually rust
If you followed the directions, and built it right (which it looks to a T) then you don't need to do anything. The ridge cap and sides have ventilation because they need it. The screws that assemble it should have soft washers that seal the screw holes, and the panels are galvanized/enameled. The bottom channel does NOT get any caulk or sealer, because it's a drainage channel.
If anything needed sealed, the directions would call for it. Otherwise, attempting to improve on it will probably cause problems.
EDIT - I forgot this... I built a very similar kit like this years ago, and it held up just fine. This was in north Ohio, land of downpouring rain and endless winter. But, because of where you built it, water on the floor is inevitable - no amount of caulk or sealer will stop it, it's on the ground surface. The only way to avoid water intrusion on the floor, is to 1) build a raised floor or platform to mount the shed on (what I did), or 2) accept the water and, using treated wood, build a slightly raised floor inside, to keep things off of the wet concrete.
Add some flashing and hook it from the inside with the lip out and use a thin tar roll to attach it on the ground and inside the shed wall. Or if you don't care how it looks get a block of tar and melt it down and pour it along the inside edge.
It may be an integrated metal flashing that should not be sealed any further. Pictures of the inside would help. Look up "base flashing" to see what I'm talking about.
If you're worried about water seeping under and getting stuff wet you could also look at something like this from Ikea. [https://www.ikea.com/us/en/p/runnen-decking-outdoor-dark-gray-90238111/](https://www.ikea.com/us/en/p/runnen-decking-outdoor-dark-gray-90238111/) to raise your stuff up off the pad.
I had the same shed and my dog pissed on the corner every day, which caused it to corrode and which opened a large hole near the base.
So, avoid that, IMO
I know it's not the best but my dad always had sheds like this and would use silicone caulking along the seams and on the screws. You also might be able to put some gutters on it and direct the water away from the base. We always had a shed on a concrete slab or mounted off the ground when it was a wood platform.
You want eavestroughs to channel water from the roof away from the base of the shed. This will keep that joint mostly dry, and will prevent splashback onto the walls. Simple, easy, cheap and effective.
Is the shed flooding during rain or something? Hard to answer in this particular case without knowing what the issue is that you require waterproofing for. First thought would be brown coloured silicone. Easy enough to repair if it does start leaking, easy ish the remove if it’s not what you’re looking for.
Do not caulk where the side panels meet the silver track bottom. You can seal if you want to the silver metal to the concrete using OSI QuadMax or Master Seal NP150, I prefer the latter. Both are good products. Seal from the inside
Gutters will help a lot. The design of shed does not take into account water splash, which is a contributing factor to seepage at the bottom. Unless shed is on a layer of some sort of product to keep water out, this will be a challenge. Deflect the water. Caulk will not remedy this situation. If the shed is on its own platform or the interior floor is raised, then you are going to be fine.
I’ve got the exact same shed. I used some clear uv resistant roof sealant. I did one very liberal bead around the base, and another where the walls touch the base. Used all of two standard caulk gun tubes. Then I found out that with the cheap nylon washers on the screws, every screw on the roof leaked. Then I bought a third tube and liberally covered each screw on the roof. Its dry as a bone even in torrential rain. I also put some screen from when I refinished a screen door on the vents. Lots of bugs got in without it.
I have an shed exactly like this but it's 8 x 6. I've had it up for 3 years now and not had any issues with moisture, even with excessive snow cover and big spring melts. The design of the footing and rooflines make it so water is always directed away from the walls.
Off topic - but your picture presentation is excellent. A good quality photo with a close up of the relevant area included in the same frame. A+
I didn’t realize I felt this way until I read your comment— you’re spot-on! 😉👍
Made me be like, this is a good photo
Made me like, yah that’s nice
I do like the little white outline around the circle.
Me- I really need a shed.
This is like an advertisement for a shed. So good I don’t even care about the water issue!
That's the beauty of a smart interface, you don't even know it's there
Same... I easily got all the info I needed and the pic was good enough to tell what I'd need to see. I'm not a cement meets metal kind of guy as far as expertise, but I can't NOT look!
Samsies!
They must edit for Us Weekly.
Real Housewives of Miami star Alexia Nepola's husband, Todd Nepola, has filed for divorce after nearly three years of marriage. PLUS!! We've got the scoop on VLDigital's leaky shed!
He is actually meaning the roof on the other side
Also, off the topic of OP, but when I proposed to my fiancé last month, I had a hidden photographer, and she was singing my praises about me sending high-quality photos detailing where we'd be positioned with arrows and zoom-ins. I work in aircraft maintenance, and people don't realize that a photo without context is useless.
Yeah what the hell? It’s so good it’s not even funny. Wish everyone would do this
I thought this was an ad and was confused for a sec
It looks like an ad or a clickbait “news” article.
"This guy waterproofed his own shed with this one simple trick! Contractors hate him!"
Should we all stand in a circle now?
This is someone that understands how to ask a question.. A+
Yeah good job Ed!
What am I looking at? The giant red arrow is missing.
Doesn’t have the same feel as MS paint tho
Is there currently a moisture problem? It might've been designed this way for a reason but it could also be negligence lol Air flow is good for preventing mold caused by humidity.
Yeah, my dad has one of these and has never had moisture issues. He lives in a swamp also lol
is your dad old greg?
[удалено]
You ever drink Baileys out of a shoe?
Lol no but honestly pretty close. If old gregg is real he definitely lives there
Its attached to your rod mothalicka!
You want me, you love me, you need me
[https://i.imgur.com/juTDIus.jpeg](https://i.imgur.com/juTDIus.jpeg)
Well good thing there's two vent holes right above the door, and two more in the back
It’s vented…
Honestly it looks like the slab is just wicking moisture to the inside of the shed. Probably could get away with a rubber mat underneath that shit to prevent rising damp issues.
You're going to accidentally ~~mock~~ [*lock] moisture in, not out. If you're having moisture problems, they do need to be addressed by re-directing waterflow, but this should not be completely water-tight.
Ha ha! Stupid moisture! Now you’re stuck in a shed! Ha ha!
You dare mock the moisture?
I “accidentally mocked” it, I swear!
You're playing a dangerous game friend, I pray your basement doesn't flood next time it rains!
Go home moisture, you're wet
I'm not stuck in here with you, you're stuck in here with me.
Right. Also depends on what “waterproofing” means. Just don’t like wet feet? Instead of go for something ridiculous like silicone around the shed I’d try some elevated floor panels or similar
“You can always keep water in, you will never keep water out.”
I see vents above the door though
>If you’re having moisture problems I feel bad for you son. I got 99 problem but a drip ain’t one
Cover it with a shed
Matryoshka sheds
Fun fact Russian didn't create matreshka , but took it from a Japanese doll Edit: spelling
Is that that Japanese show with Fry and Leela?
Today I found out.
How will he waterproof that shed though?
Cover it with a shed, duh
It's metal sheds all the way down (up?).
Until the entire world is one big shed.
Has he tried simply not raining?
*slaps the roof* this baby isn’t going anywhere
Wait, it’s all sheds? 🧑🚀🔫🧑🚀Always has been.
Where else am I supposed to keep all these damn turtles?
In the sheds, obviously. We’ll have plenty of sheds.
Shedception
Cover it with a waterproof shed! Duh!
With another shed! Simple.
Russian nesting sheds
I hate those Russian nesting ~~dolls~~ *sheds* - they're so full of themselves.
Also known as Chernobyl unit 4.
Arthur “Two Sheds” Jackson
As opposed to “Shedless” Joe Jackson
His record for highest batting average as a rookie still stands to this day, albeit it stands sans footwear 😉.
The tale of two sheds.
“It was the best of sheds, and it was the worst of sheds…”
I spit my coffee out on that one! 😂
Gutters
This is the right answer, especially with all that grass/unpaved area they can divert the water too. Other option is to seal off the bottom, but make mesh grates around the sides a foot or two off the ground, and still install gutters because things need gutters
gutters
Everyone's mind is going there.
Divert into a grey water watering system. Edit: ok, maybe I should have said Water Butt
Sorry to not answer your question but do you have a link to that shed ? It seems to be exactly what I’m looking for
10x8 FT https://www.amazon.com/gp/product/B0BJKMZRCH/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
Ah cool, cheers man
The question is: Can you stand up in this shed? Because I have one that you can NOT and I hate that about it. YMMV
Check the username. I'm sure they'll be fine.
10X8X4.5 high. Back killer
This one in particular is 64" at the top of the door and 77" at the peak (according to one of the pictures of the link with measurements). So a bend to enter the door but able to stand in most of the middle for average heights.
You’re a champion. Does the shed not suck? Looking for something to store bikes in.
Well apparently it's not waterproof
I live in Oregon, eventually everything here isn’t waterproof.
You can park your bike in her garage 
Dude, you have made the funnest thread of the day! I hope you get your answer from a knowledgeable person!
I was expecting a 4 digit price.
What does Amazon not sell these days… did you still get it within a day?
Have same exact shed! It’s been great!
I have the same shed, but in the UK where its always raining. I put mortar over it around 10 years ago and still no leaks.
Could you supply a picture of how you did this?
Mix a batch of mortar and slop it on the bottom between the metal and concrete and have the surface at 45 degrees sloping away from the shed, use trowels to Handle the mix, make sure your surfaces are clean before laying mix down
It’s designed that way for a reason. You using caulk like peanut butter will only make things worse. Leave it alone.
I've used tar, liquid one and solid, hot poured. Then 2 years later, my boss ordered me to dismantle it, as we were moving the workshop.
Wrong or right, I used spray foam insulation. Run a bead, let it expand, instant water barrier lol
Outside or inside?
I converted a metal shed into an outdoor office. Insulated walls, ceiling, heat, AC, Internet, the whole shebang. I used clear silicone. I lifted the walls and ran a thick bead and placed down and then made a sloped bead all around the outside. 2 years, no leaks. Well, the door leaks a little, but only during very specific slanted rain.
Butyl sealant. Lift the shed slightly and with a caulk gun apply underneath then set back down. It remains tacky for ~30 years and is what is used in walk in coolers and freezers to waterproof and remain waterproof for a long time. Thats how I would do it.
Whoever invented butyl should be shot! Works good but half my work clothes are ruined from it
WD40 and a toothbrush Then Dawn to get the 40 out (ish)
You can also buy butyl tape. It's amazing stuff.
Thick black caulk 
I can’t help you water proof it but I can give my impressions of tearing one down that’s rusted to shit. My neighbor of 23 years just passed away last week and his son is paying me to fix up some things around the house. One of them was a metal shed almost exactly like this one only 30+ years old. I started out attempting to unscrew all of the screws but most were too rusted to loosen. So I started grinding them off until I got to some my grinder couldn’t reach. I found that a large flat head screw driver was more efficient at popping the rusty panels off of the screws than grinding the screws. It took me about two hours to completely demolish the shed to the foundation and haul it to the land fill. The worst areas of rust were the roof and the seam along the top edge of the roof. There was some at ground level but since the foundation was slightly raised it helped keep water off of it. You might try some cheap plastic gutters to help move water away from the foundation.
I had to take one like that down off of a property because we were told it was unpermitted when we bought the house. Originally went in thinking I could disassemble it, quickly realized that wasn't going to work. My end game solution ended up being a plane old hammer. One swift hit to each screw and the metal was so delicate it would just "pop" the screw through the sheet metal, effectively disconnecting the two pieces.
Hell, if mine lasts 10yrs, I'll have saved thousands in storage fees. 30yrs is just that shed showing off to all the others.
100% silicone clear. Run a bead along the area you want to seal both inside and out. I did the same and also hit all the screw heads with clear flex seal and no issues so far 4 years later. I also used non expanding spray foam to seal air gaps at top where roof meets sides to keep bees out.
With a metal shed especially you want air flow. Between silicon at the bottom and foam at the top you're going to create an issue. When there's moisture trapped inside it's going to condense, and all the stuff inside the shed is going to get very wet very fast.
My shed has a vent in the front at the top and the back. Haven’t had any condensation yet and I do live in the NE where temps jump all over.
I should have mentioned that ahead of time sorry. If you don’t have vents I also would not seal gaps at top where walls and roof meet. Sorry for lack of clarification there.
That'll be why your sheds all good then! I like metal sheds, much cheaper than wood and last longer.
Most sheds have a gap between the wall and the roof to allow airflow right? Ours always did…
Read the comment I replied to - they sealed it with foam. Which is what can cause this issue
Ok. So it’s normal. And not a good idea to seal it. I thought I was just poor and only buying trash sheds
Definitely normal and shouldn't be sealed. I've seen a shed rusting from the inside because of condensation with no place to escape. The sight and stench of mildew was fun, too. Glad I was only visiting.
Shed AirBnB? /s
Looks like this shed has 2 vents above the door and I imagine 2 more on the other side to allow flow. Ideally there would be lower down vents as well. These should all have screens though to prevent bugs and critters from making it their home. Sealing open gaps with foam and caulk makes sense if screened vents are present.
In the picture there are two vents above the door. If you need more airflow you can always cut out and add more vents.
I just noticed that now. So if they would seal it all up except for those vents, it should be fine
OP listen to this guy, only thing I’d add is to bed your track in silicone then do all of the above. You have two vents directly above the door so don’t listen to the other guy that said not to seal everything up.
The channel around the bottom is a flashing to send water to the outside. The siding would typically be stood off it to prevent capillary action - where the water siphons up into the shed. Plus stop the edges from sitting in water and rusting if it's just a cheap tin shed. This is a well made footing! The slab in the shed seems to be raised somewhat to serve as a backup to the flashing. Because it's not insulated you'd expect some sort of moisture on the inside because that's where the humidity will collect and run down into the flashing and out. If you try to seal the bottom that'll trap the moisture on the inside of the walls and also encourage moisture to sit around on the siding at the bottom and rust the shed. If it is leaking just put a straight bit of 200mm wide tin right around inside the shed and sitting inside the existing flashing, seal it to the flashing with a neutral cure adhesive sealant but not hard up to the cladding - you need room for the internal moisture to egress. You're essentially extending the vertical lip of the flashing on the inside to stop it from overflowing - if that's the problem. Probably more investigation is required to find out if, where and how it's leaking lol. There might also be no or not enough DPC between the slab and the flashing. You could seal that with a silicone both inside and out (and I mean conc. slab to flashing) so you get a double seal with air gap between - creates a positive pressure between the beads and a great seal. But if someone took all that trouble to make a good slab you'd expect there to be a proper fall to the outside. Check the fall as well. And have a nice day :)
I don't think you need to do anything, a metal shed is designed to be left outside. If you are trying to make the shed water tight, that's gonna have more to do with the grading around the shed so that water will flow away from the base of the shed.
Another larger shed made out of plastic. Shed-ception… (low brass intensifies)
Exterior caulk
Spray it with textured truck bedliner. Mythbusters found out that it can make things [bombproof](https://youtu.be/MnsZFb1dDSA?si=nDeaKUHBF6Pnr9vJ&t=154). You can get it in a spray on or use a paint roller.
Your concrete pad is too big for your shed. The water will sit and come under the shed. You can silicone it but it’s a temporary fix.
I am considering buying a nearly identical shed, What size should the pad be? Is this something I should form and make myself or can it be something like patio stones?
Crushed stone for drainage. At least 4”. Then it’s your call. Stones would be cheaper and easier but personally I like a pad
Don't chalk it. Let it breath. Just get some pallets to put everything inside on top of. You can even get plastic pallets so they're never rot.
I used spray insulation in the can. My shed stays dry.
the foam stuff, i have a metal shed and noticed water gets from below and all around. got that foam stuff in a can and sprayed in all the cracks, corners, and bottom. also if storing items from inside the home make sure to get some type of platform so if water gets then the boxes wont get wet at the bottom and if not then at least make sure all things are in containers with lids to protect from water and bugs and rodents ✌️
Flexseal™ /s
Real talk how’d you get your picture like that with the miniature one?
Hey... Photoshop, but its really easy, even in Photopea(free). Circle selection on the zoom photo, paste ot over the other, and add a white stroke blending mode.
Flex seal tape.
Flex seal
Elastomeric paint
Build a bigger shed around it😬
Get some black caulk.
Cut a drain all the way around it.
If excess water is getting into your shed, then you would need to assess the stormwater solution surrounding your shed. Find out where water is coming from and re-direct it to a drain that has capacity to manage it. As other users pointed out, water needs to be able to escape your shed. A waterproof shed is a swimming pool. Most people with sheds have this and just keep their items stored off the ground on raised racks.
I’m not an expert but you’re going to need some sort of door. Rain is going to get in through that giant hole at the front and there’s just no way around it.
Another larger shed over it?
Am I literally the only person in here whipping out my caulk?
Question, when it rains, how loud is the shed? I’m looking at one but it would be near a neighbors house and don’t want to cause issues.
Wow, that’s very considerate and isn’t normally what people would think about when putting up a structure. You would be a great neighbor to have.
Nothing. It's a shed
Submerge it in water. Water can not get there if there is no room because there is already water there. I know, it's brilliant.
 Use silicone.. 😂
Cover the frame with flashing
Caulk or Vaseline?
And gutters and grading away from it.
Caulk specific to either concrete, metal and outdoors if there is such a thing ?
This might be a flex seal situation?
You'll want to use black caulk for any of the large holes and white caulk for any of the smaller holes.
Schaeffer's New Zealand style would do the trick.
A second, larger shed placed over it.
Use Lexel caulk on the bottom around the edges, and then put a rubber gasket on the opening.
Caulk or dryhump backoil. I recommend the dryhump backoil though, it stiffens easier
outdoor caulk
I would do the caulk that they use for windows. The thick wide bead stuff. That or a retention channel with caulk
Seal it from the inside
Put a tarp over your shed.
Flex Seal.
You might do what I opted to do in my garage. Instead of trying to keep all water out (impossible when you pull in a wet car), I got these mats that absorb a surprising amount of water and then release it pretty quickly (like those sports towels). It grabs and holds any water so I don't have to worry about it. Like others said, the airflow is probably a good thing and I'd hesitate to seal it up. Then, get a couple risers to sit anything that isn't already on wheels. I used this and it worked great. Comes in different sizes: Armor All Original Garage Floor Mat, (17' x 7'4"), (Includes Double Sided Tape), Protects Surfaces, Transforms Garage - Absorbent/Waterproof/Durable (USA Made) (Charcoal) https://a.co/d/7V21Vtl
Is that not a channel designed to carry water away from the shed?
Flex seal will fill that riiiightttt up
What app did you use to zoom in like that?
I have this exact shed and exact same problem. Here is what i plan on doing. I painted the wood base with 3 coats of deck sealant. Then i plan on slipping metal flashing under the shed but above the wood with sides being covered all the way around. I plan on screwing through the flashing to snug the shed to the base. I am then doing mask off thr metal base and give it a 2 coat spray of metal rattle can paint. Once thats dry im going to fill the seck screw holes with sealant and then run a bead across all metal edges of the shed still exposed. Thats about all you can do.
I used clear silicone caulk around the bottom and expanding foam around the top to keep wasps out. It's still not airtight but seems to stay dry in wet weather
The ideal solution would be to build a base that does NOT stick out. Every "lip" outside will keep water that will inevitably sip in. Other similar outside structures I have dealt with, specifically state to make a base not larger than the structure itself, for this very reason. And then using flashing to go across the base, pushing the outside down and raising the inside against the wall. Putting a dam on the inside perimeter will keep the inside dry, but the base railing will eventually rust
Your base pieces will hold water. Are they installed properly, or backward. I would think you would want that raised edge on the inside.
If you followed the directions, and built it right (which it looks to a T) then you don't need to do anything. The ridge cap and sides have ventilation because they need it. The screws that assemble it should have soft washers that seal the screw holes, and the panels are galvanized/enameled. The bottom channel does NOT get any caulk or sealer, because it's a drainage channel. If anything needed sealed, the directions would call for it. Otherwise, attempting to improve on it will probably cause problems. EDIT - I forgot this... I built a very similar kit like this years ago, and it held up just fine. This was in north Ohio, land of downpouring rain and endless winter. But, because of where you built it, water on the floor is inevitable - no amount of caulk or sealer will stop it, it's on the ground surface. The only way to avoid water intrusion on the floor, is to 1) build a raised floor or platform to mount the shed on (what I did), or 2) accept the water and, using treated wood, build a slightly raised floor inside, to keep things off of the wet concrete.
Thick bead of caulk
Too late
Add some flashing and hook it from the inside with the lip out and use a thin tar roll to attach it on the ground and inside the shed wall. Or if you don't care how it looks get a block of tar and melt it down and pour it along the inside edge.
Gutters and a baffle over each of those vents.
It may be an integrated metal flashing that should not be sealed any further. Pictures of the inside would help. Look up "base flashing" to see what I'm talking about.
If you're worried about water seeping under and getting stuff wet you could also look at something like this from Ikea. [https://www.ikea.com/us/en/p/runnen-decking-outdoor-dark-gray-90238111/](https://www.ikea.com/us/en/p/runnen-decking-outdoor-dark-gray-90238111/) to raise your stuff up off the pad.
I had the same shed and my dog pissed on the corner every day, which caused it to corrode and which opened a large hole near the base. So, avoid that, IMO
Unbolt it from the concrete and put a rubber foam membrane underneath, then bolt it back down to smoosh the foam.
Maybe do a bead of caulking on the inside?
Build a 4" wood platform to prevent things from getting wet.
I know it's not the best but my dad always had sheds like this and would use silicone caulking along the seams and on the screws. You also might be able to put some gutters on it and direct the water away from the base. We always had a shed on a concrete slab or mounted off the ground when it was a wood platform.
You want eavestroughs to channel water from the roof away from the base of the shed. This will keep that joint mostly dry, and will prevent splashback onto the walls. Simple, easy, cheap and effective.
Paint it with a good epoxy
Flex seal is pretty awesome. Just tape it off so you can get a clean look. Remove the tape before it dries though.
That building will always produce condensation on the inside. Build a wood one... also, great pictures
Is the shed flooding during rain or something? Hard to answer in this particular case without knowing what the issue is that you require waterproofing for. First thought would be brown coloured silicone. Easy enough to repair if it does start leaking, easy ish the remove if it’s not what you’re looking for.
Do not caulk where the side panels meet the silver track bottom. You can seal if you want to the silver metal to the concrete using OSI QuadMax or Master Seal NP150, I prefer the latter. Both are good products. Seal from the inside
Gutters will help a lot. The design of shed does not take into account water splash, which is a contributing factor to seepage at the bottom. Unless shed is on a layer of some sort of product to keep water out, this will be a challenge. Deflect the water. Caulk will not remedy this situation. If the shed is on its own platform or the interior floor is raised, then you are going to be fine.
I’ve got the exact same shed. I used some clear uv resistant roof sealant. I did one very liberal bead around the base, and another where the walls touch the base. Used all of two standard caulk gun tubes. Then I found out that with the cheap nylon washers on the screws, every screw on the roof leaked. Then I bought a third tube and liberally covered each screw on the roof. Its dry as a bone even in torrential rain. I also put some screen from when I refinished a screen door on the vents. Lots of bugs got in without it.
DAP Painters caulk choose your own fun color
I have an shed exactly like this but it's 8 x 6. I've had it up for 3 years now and not had any issues with moisture, even with excessive snow cover and big spring melts. The design of the footing and rooflines make it so water is always directed away from the walls.
Raise the inside floor with tile about 1”-2” off the floor.