Gaps between Patio and Greenhouse base solutions?

[stuffys]

Hi everyone.
I laid concrete slabs for my greenhouse and have since found out that they are not as level as my spirit level told me . As such, there is gaps between the slabs and the greenhouse base. My question is what can I do (apart from lifting and attempting to relevel the slabs) to fill the gaps?

Thanks in advance for any help.

Mike.

[burnie]

Hmmmmm, if the base were to warp at all, your glass could break when the house follows the base, it will need to be some thing that won't compact, like slate or metal. I wouldn't use wood as that will compress eventually.

[Jungle Jane]

There's a similar thread here with some advice~
http://www.growfruitandveg.co.uk/gra...ase_52692.html

[stuffys]

Hi Jungle Jane.

I saw that thread and I should really have added a follow up question on that thread-ie, What did they do, did it work?

I have messaged Two Sheds to see what they did?

Cheers.

Mike.

[Bigmallly]

If you can move the greenhouse, it may pay to do that & level the slabs rather than using packing & fillers.

[Martin H]

My greenhouse is on a hard concrete base where a garage used to be. I sealed the gap (up to 2cm in places!) with the expanding foam stuff. It worked really well and it is now draft-proof and snail-proof at the base. It's not quite watertight though - the concrete is uneven and there's one place where a big puddle forms outside the greenhouse when it rains. The water seeps through from the puddle through the foam and makes the floor damp inside the greenhouse. If I were to do it again, I'd prepare the gap by getting all the loose stuff out and brushing in PVA adhesive before squirting the foam in; that might give me a watertight seal. But I can't really be bothered re-doing it even though it would help keep the humidity down in winter.

[stuffys]

Hi Martin

Thanks for that feedback, was thinking of using the foam and was wondering how it performed. Will try the PVA and maybe also silicone sealant, just to improve watertight seal.

[Muntjac]

Hi Martin

Thanks for that feedback, was thinking of using the foam and was wondering how it performed. Will try the PVA and maybe also silicone sealant, just to improve watertight seal.

HA6 SILICONE SEALANT RTV MARINE AQUARIUM, FISH TANK Sealant
eBay at £2 a tube is what I used many years ago and have had no problems