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screed

Screed has three meanings in building construction:

A flat board (screed board, floating screed) or a purpose-made aluminium tool used to smooth and to "true" materials like concrete, stucco and plaster after they have been placed on a surface or to assist in flattening;
A strip of plaster or wood applied to a surface to act as a guide for a screed tool (screed rail, screed strip, screed batten);
The material itself which has been flattened with a screed (screed coat). In the UK, screed has also come to describe a thin, top layer of material (sand and cement, magnesite or calcium sulphate), poured in situ on top of the structural concrete or insulation, on top of which other finishing materials can be applied, or the structural material can be left bare to achieve a raw effect.

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  1. A

    Choosing UFH pipe for screed

    Hello I'm looking at the different pipes for UFH, the prices vary a lot and I'm not sure about the differences between the products. I'm doing two zones, one 127m the other 70m, both will be under screed. JG barrier pipe will cost £400 but Pert-Evoh-Pert is only £170. Both say they are 15mm...
  2. Rgp2021

    Tile tray vs screed base

    Hi all, We are about to strip our bathroom due to a prior leak. New floor, walls, the lot. The bathroom is located on our 2nd floor of our house (timber framed). We had a walk in tiled shower and the waterproofing failed due to it not be completed correctly. We have had a severe leak that...
  3. M

    Shallow trap to cut into screed

    Hi all. Hooing for some advice on a shallow trap. The waste goes to a gulley. Either for a small height shower tray or to cut out the screed for a wetroom and backfill with the correct fall to drains. Thanks
    • mutley racers
    • Thread
    • america cut screed trap usa
    • Replies: 8
    • Forum: USA
  4. B

    Hot water ring main in the bungalow roof void rather than screed

    We are considering having our house rads and hot water system replumbed so it's not buried in the 1970's screed that it is at the moment. The cement progressively eats away at the copper if it is not wrapped in Denzo tape (no way to tell without digging up the screed). We are thinking of...
    • bngimages
    • Thread
    • america bungalow hot hot water main rather roof screed usa water
    • Replies: 18
    • Forum: USA
  5. H

    Heating pipes in screed

    Hi im moving a toilet, sink and rad in our cloak room. The toilet and sink I’ve no issue with but the heating pipes are causing me sleepless nights. Despite numerous attempts me soldering skilll are awful. I was wondering if I could use either push fit or compression (wrapped in tape so not in...
  6. H

    UFH Leaks 1 year after installation

    Hi - I little insight and guidance would be much appreciated. My wet UFH was installed over a year ago by a qualified heating engineer, he went through all stages and did the pressure test as well, everything has been working nicely without any issues. Now here is the unlucky coincidence - I had...
  7. F

    UFH running temperature and how to gently warm screed

    Hi all, I've just had my wet UFH connected up and turned on for the first time in my new extension and I've got a couple of questions: The screed was laid 6 weeks ago and my floor finish tiles haven't been laid but I'm looking to get them laid in about a week, so would like to spend the next...
  8. Crooksy88

    UFH screed vs chipboard overlay performance comparison.

    Hi, as part of an extension/refurb project I will be fitting UFH over a new concrete floor as well as existing joisted timber floor. Both floors being within the same room. My question is whether anyone has done this mix of subfloors before and noticed a performance/temperature difference...
  9. B

    Low profile overlay wet UFH - screed, grooved gypsum or insulation?

    Hi folks, my first posting and hopefully it's a sensible question. I'm doing a renovation and intend to heat with wet UFH supplied from an ASHP. I have to go for minimal build up because of head-room, so I'm looking at the various low profile systems. Insulation of the property will be OK...
  10. D

    Burst pipe under screed mystery

    Hi All I wonder if you could help me with a small conundrum. I was recently called to the scene of a water leak in a bathroom installation that we carried out a few years ago. I will try to include as many as the details as I can. The homeowner had walked in to the bathroom and found water had...
  11. M

    UFH pipe spacing in screed floor

    Hi, I am just looking for a little guidance in what my requirements should be for pipe spacing under the screed, my systems specs are as follows: 15mm ultra flex polypipe poly pipe zru 2/3 manifold pump unit and plastic egg trays for pipe S&C screed @ 60/65mm thick, Schulter ditra and 10mm...
  12. N

    How deeply are plastic central heating pipes usually under screed

    Despite powerflush new lockshields,and trv's still one rad not heating.I took it off and checked flow and return.Good from return but just a drip from flow end.I feel it is blocked underfloor plastic pipe.Just wondered how deep they are usually laid.-house approx 20yrs old appreciate any rough...
  13. D

    Pipe under screed floor.

    I am not a plumber. My friend had a conservatory built and they extended her central heating but buried the flow and return pipe under the floor. There is only one flow and return pipe feeding 2 radiators so I assume they have split the pipes under the screed to feed both rads.My understanding...
  14. gingalig

    Copper pipe in screed, unprotected

    Hi , I have just been asked to cap off a redundant supply to a no longer in use fire, I have spoken the customer on the phone and he tells me he has exposed some of the pipe work under the screed when removing the fire place, I asked if the pipework was protected or sheathed and what else it...
  15. K

    Best practice for copper pipes (gas and water) in concrete/screed

    Hi, Plumber has dug a trench in my existing solid kitchen floor and laid the following pipes - 15mm flow and return - covered whole pipe with hessian felt sleeve 15mm mains water - laid hessian felt sleeve on top of pipe (not around) 28mm gas - wrapped gaffer tape around the pipe. I'm not...
    • KevinD-A
    • Thread
    • concrete floor copper copper pipes gas pipes practice screed water
    • Replies: 17
    • Forum: Plumbing Jobs | The Job-board
  16. B

    Wanted: Plumber to lay UPONOR MLCP in 1 room

    Hi, I am replacing the screed and pipe in one Conservatory room as the screed was shot and breaking up after ceramic tiles were lifted by my tiler. To be fair the screed must have been a bad mix or dried to rapidly in the conservatory heat. Currently the whole system (14 loops) use UNIPIPE...
  17. L

    sleeve for plastic barrier pipe in screed ?

    Hello, i need to put some rad pipes in for our extension, i was going to use JG speed fit. for a sleeve i was going to buy a few lengths of 25mm plastic conduit and some sweeping bends so there is no joins in the floor. any probs with that ? thanks
  18. A

    dhw&cold pipes below UFH insulation & screed

    Hi new to forum, can any one see a problem running 15mm polyfit Dhw &cold pipes in conduit (with>50mm separation gap)in chase in slab, then covered with 75mm insulation and ufh pipes and screed on top. Thinking is put in chase to keep cold water pipes from warming from ufh pipes. Would be...
  19. T

    Gas pipe under screed

    I was running gas from meter to hob today in preparation for screed, which is going down next week. I've clipped my pipe and tested it etc. this pipe is going to be beneath celotex insulation a damp proof membrane and then my ufh pipes and a liquid screed. My question is: Do I need to denso tape...
  20. A

    Nu heat or polypipe for wet UFH

    I'm caught between two systems for UFH, I prefer the idea of the polypipe as it is simpler and quicker to install - my plumber /builder haven't done the low profile screed type UFH before, but... Nu Heat say their screed system has a heat output of 120w/m2 through 10mm pipe. (link removed...
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