Tyvek housewrap

[Wils81]

Building my garden room and the neighbour has kindly donated some tyvek housewrap left over from his extension. I've used another brand of membrane on a small shed I built, the tyvek stiff feels a lot thinner. The other product felt nor like a cloth, where as the tyvek has a more paper feel. Is this right? Not sure if there are knock offs of the stuff TIA

 

[freddiemercurystwin]

Tyvek is pretty thin, less than 0.2mm thick.

What membrane did you you use before?

 

[hllns]

Building my garden room and the neighbour has kindly donated some tyvek housewrap left over from his extension. I've used another brand of membrane on a small shed I built, the tyvek stiff feels a lot thinner. The other product felt nor like a cloth, where as the tyvek has a more paper feel. Is this right? Not sure if there are knock offs of the stuff TIA

Genuine Tyvek looks like and is the thickness of paper more or less, it's made of of woven plastic so if you crumple or or tear it it will be more plasticky than paper, genuine stuff for building use on a roll is normally plastered with branding as well so it's normally obvious.