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So its fine if I put the DPM ontop of the existing concrete slab? Put 75mm celotex double side foiled back. Run my pipes ontop of this and then 60mm screed? Is this acceptable practice?

Do i need to install the dpm under the slab or can it be ontop of existing slab andthen insutiolation boards ontop then screed?

Hi all, I want to install wet underfloor heating on the ground floor of my property. It's a 1930's build, all of ground floor is solid concrete floor. Assumed that no DPM and insulation as its original build. What are my options to install wet underfloor heating? I have the ceiling height so...

Its a flat pitched roof Noseall..

Hi All, What are the regulations to roof construction on a new build? Should all new work have warm deck construction? Are cold decks still permitted? Builder is cutting cost and doing cold deck construction, should I be concerned? Thanks.

Thanks Woody, nice and simple. Don't know why I didnt think of that! Cheers.

Hi all, I have a flat roof, have put wall plates on. Got the joists and noggins in. First and last joists sit on edge of the block work. I have not put the OSB on yet. The problem I face is that if I continue as is, and I put a fascia against the joists/blocks then when the sides get rendered...

Hi all, I am replacing radiators in the upstairs of my property. Currently they have been removed but the new ones have not been connected. When I drained the system a lot of brown dirty liquid came out and I noticed there is black sludge in the pipes. I want to get the pipes cleaned...

Thanks chaps, So I've decided to use the T&G boards rather than the larger 8*4 sheets. Does each joint where the two t&g boards meet need to be resting on the middle of a joist? Or will the T&G support the boards in areas where it does not fall in the middle of a joist?

No for a flat roof..

Hi All, Going to be laying new decking for an EPDM covering. Been reading that a 3mm expansion gap should be kept between the boards. Using T&G OSB this will not be possible. Is that OK and is it due to an expansion gap already being present in the T&G? Also if I use normal boards...

Thanks Ken! Yes this definitely seems like one that could bite! Agree with your solution, rip out and replace makes total sense. Think the time spent sourcing would just not be worth it. Cheers! :)

Hi All, If you had a job where about a quarter of an engineered floor had been damaged and needed replacing, how would you go about's the job. The flooring is quite old, but still a modern click system, but no one knows where it was bought from. If only replacing the damaged section, you...

Great. Thanks mate.

Hi All, I have a garage flat roof that has badly sloped. Garage is attached to the side of the house. Length is 8.5 meters, width is 2.2m. Currently it is slopped using the width of the garage and into a gulley which then slopes towards the back of the garage and out into a drainpipe...

So I got a replacement tray and still the same issue. Is this acceptable?

Thanks...Think I'll take it back.. Doesn't seem right. The edges aren't even level themselves so how am I supposed to level it!

Hi mate, Have not laid it down yet. I have dried fitted and packed out with wedges and tested the drainage. The problem is when I was attempting to level it the edges themselves are not level. Put a level on each of the four edges and it rocks. Push down on one side and there is a 5mm gap...