My builder put some builders mastic sealant down the join between our extension and our house on Monday morning and it is still very soft to touch 2 days later. Should it be? How long does this type of sealant take to dry? Surely it should be dry by now?
It's very soft to touch but does not stick to my finger, it's got a kind of skin on it which wrinkled up when I tried to smooth out the dent I'd made with my finger when testing if it was dry.
Just been reading about sealants and I think he's used an oil based sealant. This link below explains oil based sealants which fits with what mine is like. I think I remember seeing oil-based written on the tube when he showed me it.
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