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- 11 Jul 2017
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I live in a timber-framed house. The upstairs external walls are sitting on top of the plywood subfloor, which in turn sits on a joist.
I have noticed that there is actually an additional material sandwiched between the wall sole plate and the subfloor. It is an approx 2mm thick rubber or plastic type material. It seems to be stapled to the sole plate and folds over against the timber inside the wall cavity. If it bend it, it partly holds its shape rather than springing back.
This is more a question of curiosity than anything I need to actually address! Anybody know what this might be and what purpose it serves?
I have noticed that there is actually an additional material sandwiched between the wall sole plate and the subfloor. It is an approx 2mm thick rubber or plastic type material. It seems to be stapled to the sole plate and folds over against the timber inside the wall cavity. If it bend it, it partly holds its shape rather than springing back.
This is more a question of curiosity than anything I need to actually address! Anybody know what this might be and what purpose it serves?