Damp proof membrane

nick 56

I am building the base for a shed / workshop. The base needs a damp proof membrane which would measure 4.2m x 6.2m. When I asked a local builders advice he said 1200 grade polythene

This seems to only be available in 3.6 width, is there any wider product available or is it possible to join two lengths to make up the 4.2 m needed.

Advice would be welcome
Nick

Kalman

nick 56 wrote: »

I am building the base for a shed / workshop. The base needs a damp proof membrane which would measure 4.2m x 6.2m. When I asked a local builders advice he said 1200 grade polythene

This seems to only be available in 3.6 width, is there any wider product available or is it possible to join two lengths to make up the 4.2 m needed.

Advice would be welcome
Nick

http://www.plastics-express.co.uk/index.php?route=product/product&product_id=1671&kw=&fl=1000&ci=43648358250&network=pla&gclid=COLos4vt4sYCFY_JtAodkCIIRw

Calahonda52

overlap by minimum of 300mm and tape the joint or use two sided buthal tape like in the link

are u putting sand under it to keep the hardcore from cutting it?

nick 56

Thank you for the speedy replies. Do you know if that membrane and tape in the link is available in Ireland /Dublin

Yes it is going down on hard core then sand.

Thanks again Nick

Robbie.G

nick 56 wrote: »

Thank you for the speedy replies. Do you know if that membrane and tape in the link is available in Ireland /Dublin

Yes it is going down on hard core then sand.

Thanks again Nick

Tape available from any builders merchants

sunita1211

Yes ,

I have seen a video they install a plastic like sheet before installing the floors.
That avoids seepage of water and hence damp walls around the bathroom