Hi all long time reader first time poster here.
Im currently renovating my first property and as part of that I’m laying a new MDPE water pipe from the mains through the crawl space to the kitchen which will allow me to relocate the stop cock and sink to another wall.
My issue is the kitchen floor is solid concrete so no crawl space and I’m going to have to cut a channel through it to lay the water pipe.
My plan is cut a channel (angle grinder/circular saw/breaker?) lay a 60mm soil pipe, run the MDPE through this and then backfill with sand and cement.
My issue is upon taking the tiles up to begin work I’ve come across this asphalt like substance which I’m presuming is the original DPC/DPM from when the house was built in 1908.
I will obviously have to carve this up to lay the pipe and I don’t want to cause any damp problems in future.
I’ve researched around and some people have previously suggested laying Ardex A46 and then revealing with Ardex DPM 1 C.
However after a chat today with Ardex (see attached screenshots) it seems that Ardex DPM 1 C is not compatible with asphalt.
What do you guys think is my best solution to maintaining this DPC/DPM, I’ve done some initial research around everbuild black jack but no idea if this is any good?
Would just chucking a load of cheap wickes bitumen paint down do the job?
I’m aware there’s a blue plastic DPM there but not sure if it runs under all the concrete yet.
Im currently renovating my first property and as part of that I’m laying a new MDPE water pipe from the mains through the crawl space to the kitchen which will allow me to relocate the stop cock and sink to another wall.
My issue is the kitchen floor is solid concrete so no crawl space and I’m going to have to cut a channel through it to lay the water pipe.
My plan is cut a channel (angle grinder/circular saw/breaker?) lay a 60mm soil pipe, run the MDPE through this and then backfill with sand and cement.
My issue is upon taking the tiles up to begin work I’ve come across this asphalt like substance which I’m presuming is the original DPC/DPM from when the house was built in 1908.
I will obviously have to carve this up to lay the pipe and I don’t want to cause any damp problems in future.
I’ve researched around and some people have previously suggested laying Ardex A46 and then revealing with Ardex DPM 1 C.
However after a chat today with Ardex (see attached screenshots) it seems that Ardex DPM 1 C is not compatible with asphalt.
What do you guys think is my best solution to maintaining this DPC/DPM, I’ve done some initial research around everbuild black jack but no idea if this is any good?
Would just chucking a load of cheap wickes bitumen paint down do the job?
I’m aware there’s a blue plastic DPM there but not sure if it runs under all the concrete yet.
