I blocked up the old car port to convert it domestic use. It has a membrane under the conc slab but building control say I also need a dpm over the slab and slightly up each wall: makes sense I suppose, it'll have a plywood floor + engineered wood, on battens.
What type of membrane do I need?
There are a few slightly odd corners, and I will need stud/insulation on inside faces of some of the walls. It would be handy if I could get some membrane down around the outside of the room and joint a centre piece in later to preserve access for a while and prevent membrane damage during works, if some sort of jointing tape was available. How are joints created in DPM, are they rolled or taped joints?
I imagine that running the memrane up the wall in an inside corner would be easy enough to accommodate with a fold or two in the corner, but an external corner would need some sort of tape?
Do I need to protect the membrane with geotextile?
What type of membrane do I need?
There are a few slightly odd corners, and I will need stud/insulation on inside faces of some of the walls. It would be handy if I could get some membrane down around the outside of the room and joint a centre piece in later to preserve access for a while and prevent membrane damage during works, if some sort of jointing tape was available. How are joints created in DPM, are they rolled or taped joints?
I imagine that running the memrane up the wall in an inside corner would be easy enough to accommodate with a fold or two in the corner, but an external corner would need some sort of tape?
Do I need to protect the membrane with geotextile?
Last edited:
