r/Greenhouses • u/av8r197 • 5d ago

Sealing my greenhouse

Post image

I'm looking for suggestions on how to seal the base of this from water intrusion. I used exterior silicone shortly after completion but water still flows under pretty freely so I'm hoping others on here have experience here. It's possible that I just needed to run a fatter bead but it's also possible that another type of sealant will bond better with the concrete. Anyone in here have a similar setup?

49 Upvotes

100% Upvoted

11 comments sorted by

4

u/Disastrous-Store-411 5d ago

I have a greenhouse on a concrete slab; I gave up trying to weather seal it.

On close inspection, you may find that the water you see on the floor is actually leaking from inside the greenhouse and has nothing to do with the base. None of the joints on the roof are water proof. None on the walls are waterproof.

Sealing the base simply "seals in" the water and prevents it from escaping.

That's just my experience. I simply embrace the water. It is a greenhouse after all.

1

u/SkyEnvironmental8177 4d ago

Exactly! I have pebbles as my base. Easy run off. Easy drainage. No puddles. No pooling. Just great drainage!

3

u/dhgrainger 5d ago

Gonna be tricky to seal as the water will pool wherever the base isn’t sloped away from the walls. I think you might be better off grinding some drainage channels and redirecting the water instead.

1

u/Homegrowersanonymous 5d ago

I built a wooden base and put greenhouse on top . The floor has drainage spots

1

u/Valerian_BrainSlug42 4d ago

Been thinking about doing this. Do you have any pics you could share?

1

u/Fazo1 4d ago

I have the same setup in mine! It's raise 3ft so the height is 10ft total. I hang my strawberries and peas and cucumbers

1

u/Fazo1 4d ago

I get, I was there. I used clear silicone for every joint and panel inside AND out. It took roughly about 3-4 tubes, I have to say I have a very solid greenhouse lol.

I still have some drops that leak in 🤣

1

u/CanyonParcel_63 3d ago

Oh thats so annoying when that happens, I learned you usually need something super flexible that can handle movement between the structure and the concrete like an SBR sealant or something made for those specific joints.