Waterproofing help Ask questions and find answers on a range of subjects relating to self build projects

[NeilCole]

I have just built a garden bike shed and i need a sealant for the inside to stop rain and water getting in the tiny cracks.

It was a cheap shed so i wasnt expecting the best but i would like to keep it water tight is there any sealant you can recommend me to buy or will normal waterproof sealant do.

I have been looking at roof sealant, bath/shower sealant but really dont know which one would be best for a wooden bike shed.

Many Thanks

Neil Cole

[Perry525]

Sealants require a gap of about 6mm to work well, smaller gaps will just pull away over time as there is not enough material to stretch and contract.
If they are cracks, then covering the outside with waterproof ply wood or ship lap, should do the trick.

[Jas.Dou]

Hi,
Pro-seal34 is a good waterproof sealant that will work on a lot of surface.However as said above it will be inefficient over time on very small cracks.
Hope it helps and let us know if you found a better solution.
good luck.
Jason