Thompsons Water Seal - 1 litre bird flu The Never-Leak Roof means -

The Never-Leak Roof means - no need to replace felt

Handmade in England

12mm thick

then use plastic tent pegs (with guy ropes made of any non-conductive cord) on the posts to tension the top strand

Thompsons Water Seal - 1 litre bird flu The Never-Leak Roof means -Thompsons Water Seal 1 litre can. Keep your hen house roof waterproof with an annual application of Thompsons Water Seal. Thompsons Water Seal has a unique formulation that uses hydrophobic technology to give invisible protection to your timber housing. 1 litre tin (it does what it says on the tin!) Unlike some water proofers, it penetrates the surface to form a breathable membrane which will allow moisture to evaporate whilst protecting against water