dpm

  1. D

    Latex self levelling on Dpm

    Hello l’m doing up a cottage in Dorset. I’m moving the kitchen into a ‘60’s built extension. It’s got a concrete slab and tho it doesn’t seem damp I can’t see any dpm. After talking to Everbuild/Sika’s technical department I’ve used their 908 Blackjack as a dpm with Sika latex levelling compound...
  2. ourliam

    Tiling over half solid concrete, half suspended wood after a DPM coat

    Following advice from a damp and timber report carried out we were advised to a apply a coat of dmp to our kitchen floor. The floor is half concrete and half suspended wooden slats (very old). We had planned to put prime followed by self levelling concrete of around 9mm on the concrete and match...
  3. S

    DPM and insulation board

    Hi, I have decided to install underfloor heating in my hall and kitchen the current floor is uninsulated screed, the ceilings are a bit low so took up the 50mm screed so I can install 50mm tile backer boards something I wasn't expecting is to find a bitumen layer between the screed and slab...
  4. S

    Levelling a DPM floor?

    Good morning tilers, A neighbour has recently asked me to look at tiling the floor in his garden room. The screed is incredibly rough and will need levelling first - the problem is he has already gone over it with a DPM (liquid I think). This is a new problem for me and I'm not sure how/if...
  5. P

    tiling on asphalt dpm

    hi all newby here...we have purchased a 1970 bungalow, turning into a bit of a nightmare, evidently the dpm subfloor is an Asphalt about 20 mm thick. can i tile onto this in our en-suite...what primer, preparation do i need. Second Bigger question....We had planned to have Amtico laid onto our...
  6. B

    Will thick DPM sheet act as a poor mans decoupling membrane?

    Hi, I've put some latex self level on a ply overlay(all done right) and wondered if I could use some thick DPM sheet as a decoupling membrane - am totally skint and wondered if anyone has tried this or what you think please? cheers
  7. C

    Is it worth applying a liquid dpm or tanking bathroom floor before tiling?

    I have a ground floor bathroom with a concrete floor with no DPM sheet (was an old coal outhouse that's been bolted onto the Victorian house via a short walkway). Two external walls approximately 3m x 1.2m I've dug the outside ground level deeper than the inside level, sorted new guttering and...
  8. E

    DPM on top of screed and under tiles

    We converted our garage and building control are insisting I install a DPM over the screed (even though the DPM runs under the concrete raft foundation of the house). I will be tiling over the screed so looking for the simplest option. I could get a tin of blackjack and paint that on but...
  9. D

    To DPM or Not to DPM

    Hi, I have a porch roughly 1m x 1.5m. The porch was formed by enclosing an external slab. As you can see from the image the slab is part quartz? tile with some new concrete patching, the step into the house is what's beneath the tile (I removed them so I can put in a single stone step). Having...
  10. D

    Liquid Damp proofing Old Floor

    Hi Guys, Ripped up some tiles on an old floor today. Some of the tiles were came up very easily and there was a very slight damp feel. It's obviously very minor rising damp as the tiles have been down 30 odd years. I've looked at the mapei epoxy dpm but it's pricy and only need a very small...
  11. S

    Ashpalt/Bitumen - lack of DPM? - Preparation for tiling.

    Hi all, I am looking for some advice please. We are due to have our hall and kitchen tiled, some of which needs levelling. Our tiler is going to level the areas that need levelling. He said he is going to use Trim/Co SX301 for the levelling? In preparation for him doing the work, we have...
  12. C

    Preparation of Sub floor and Dpm for underfloor heating and tiling.

    Hi All, I am new to the forum so I apologise for my mistakes. I have lifted a laminate flooring from a hallway floor to expose loose tiles adhered with a thin layer of what looks to be bitumen. After reading many people's posts I have scraped as much as I can off. Beneath the screed is a...
  13. S

    HELP! Do we need a DPM before laying tiles

    Hi, We've just finished pulling up old quarry tiles ready to fit new Porcelain tiles throughout! Had to remove quarry's due to levels of external doors, were unsure what the subfloor is beneath the quarry's, I believe the property is prone to rising damp seeping through subfloor as no DPM. I'm...
  14. W

    Product recommendations

    Hi, Currently in the process of re tiling my kitchen floor. At the moment I've got all the old tiles up leaving me with just a concrete slab, but due to the age of property there's no dpm underneath. Was after recommendations for a good liquid dpm to put down on top of the slab, preferably...
  15. W

    Advice - Tiling on concrete with no dpm

    Hi, just after some advice about my kitchen floor which I'm currently looking at renovating. I did have quarry tiles down on the floor and I have now taken these up and there is a concrete slab underneath but there's no dpm under the concrete due to the age of the property. Just want to...
  16. M

    Best liquid DPM

    Anyone know or have used a liquid DPM before? Got a job coming up where I was going to be levelling and tiling a ground floor kitchen area. The customer has lifted the old tiles and has discovered damp patches on the solid floor. They have asked their builder to look at it who has told them to...
  17. R

    DPM over leveller

    I've been asked to level the cellar floor of a bar. I intend to use an epoxy DPM over the leveller. Does anyone know if the leveller should be allowed extra drying time before applying the DPM? My gut says to leave it a few days but presumably if a leveller can be overlaid with a vinyl or other...
  18. R

    Floor Tiling On Dpm

    Hi, Grateful for your thoughts guys, I'm in the building trade but not a professional tiler. I have been asked to tile a couple of rooms for a family friend. Large format porcelain, 600 x 400 mm. The two rooms are small utility 5sq. m. and conservatory 15sq. m. The issue is they have brought...
  19. J

    Self Levelling Over Bitumen Dpm In 1950 House

    Hi guys I'm a first time house buyer, and I am trying to level a floor to tile. The hardcore underneath the bitumen is old sham and sand from a nearby by Pitt. Then on top of that concrete and a bitumen dpm of around 10-15mm. Problem is over the years when shale or sand absorbs moisture it has...
  20. judge

    paintable dpm

    Can anyone recommend a liquid dpm to tile onto ?(will be tiling over with reclaimed quarrys).The floor is concrete,in good condition(ive no clue how old it is)But when there has been a lot of rain a condensation appears on the surface.Customer says it doesnt gather water but enough to get your...

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