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I’m passes way through fitting a rubber roof to my shed. They’ve sent sealant / mastic for doing the edges as part of the kit.
But only enough for 10m apparently… I have about 24m of edge.
Can anyone help with what this stuff is and if I can buy an alternative in Screwfix etc?
The company wants £15 shipping, which is a bit much for 3 tubes!
Cheers!
I just bought some Sika Stixall to do my shed - it’s made by Sikaflex which are generally good and only a fiver a tube from Amazon
Stixall is brilliant stuff and lasts for years, even under water. What I've done with my rubber roofs is too also screw roofing lats on the underside so it's totally clamped.
Edit, or lats around the shed sides.

