screed

  1. H

    Working out levels.. Anhydrite screed, mat, adhesive, porcelain tile

    Need some help please with calculating levels and the build up of the floor to support tiling. Not sure about the need for the uncoupling mat? Not sure about the thickness of the tile adhesive? As I have sliding glass doors to be spec'ed and installed before the screed, I need to gauge the...
  2. S

    Anhydrite screed prep

    A simple question I'm struggling with. Up front, it's a self build - my 4th, so done a fair bit but 1st time using anhydrite. Screed down for 4 years+. Prepping for ditra. Started sanding with 40 grit using 6"festool orbital to remove laitance - solid - (so may have to use diff tool). Issue I...
  3. Troystar

    Floor tiling on screed with no visible cracks

    Could someone give me some advice please. I'm a landscaper by trade and have laid a few porcelain patios. Now I know interior tiling is not the same but would like to have a go at my downstairs toilet floor. House was built early 2000s I think its screed but could poss be the wet slurry with no...
  4. N

    Anhydrite screed prep

    Hi guys technical question hoping maybe you have an answer as I have never came across this before we have an anhydrite screed floor we sanded it hoovered then sealed twice came In Today and the sealer looks like it’s peeling in certain areas have u ever had this the floor is completely dry...
  5. J K Tiling Cornwall

    Poured concrete screed preparation

    Hi everyone. I have a floor tiling job coming up that is a poured concrete screed over piped underfloor heating. The screed has been down for many months (completely cured and underfloor heating has been ticking over on low). My issue is that the surface is quite smooth with a light sheen. Would...
  6. A

    Ardex A29 quick set screed

    First time using this and it says it can be tiled on 24hours after application. I'm looking at it, it's firmed up but still has the wet look all around it. I was thinking maybe it would have dried out quicker than this or am I overthinking it. I want to use green screed addy, bal red anti...
  7. A

    Sand and cement screed down. How long

    I have a newly laid screed 75mm thick sand and cement laid 2 weeks ago. I'm stuck for time and need the ensuite floor tiles asap. Is there any products you can recommend for me so I can start laying now rather than wait another few weeks before it's fully dry.
  8. M

    Tiling onto calcium based screed

    Hi, just after some advice if anyone can help. I’ve just poured the floor on my extension at 110mm thick using Agilia (calcium based). I am wanting to tile in about 5-6 weeks but after reading a lot on this it has become apparent there will still be moisture in the floor and I should wait for...
  9. R

    Do I need a Ditra Matt on c30 dry screed?

    Hi guys We are laying porcelain tiles 120 x 120 on a c30 dry screed on top of wet under floor heating 55m2 and I would like know if we need to use a Ditra Matt or tile straight to screed with a flexible tile adhesive ? Thanks Raff
  10. L

    Very large format porcelain, partial anhydrate screed UFH

    Forgive me for I am noob... I have a 9m x 9m floor area that is one space, but half is a new build extension and half is 1920's old house Situation: The new build half has a Anhydrite screed floor with UFH. The old half is concrete floor WITHOUT UFH. The tiles are 1200mm x 600mm porcelain. The...
  11. A

    Slate over Anhydrite screed - commissioning a

    Hello 45mm Anhydrite screed (Aggregate Industries 'Highflow') is now dry (moisture tested by contractor). Thoroughly dried out with 2 x dehumidifiers running 24x7 for 45 days. Wet UFH system in screed - but boiler is not yet installed - so can't take the floor through a thermal stress cycle...
  12. J

    Flagstone Floor Screed Depth

    Hi, I am in the process of building a house and I am planning on using a thick flagstone (Supplier recommends allowing for a 35-40mm laying thickness) on my kitchen diner floor, I am using a sand and cement screed that building regs state should be 65mm thick with UFH. I want the house to flow...
  13. B

    Porcelain tiles on top of 90 day old screed

    Hi After some advice, I am a DIY tiler and going to be tiling our kitchen extension floor with porcelain tiles ( have tiled before so confident with tiling). We had the screed laid (sand/cement @ 75mm) about 90 days ago, I’m confident it dried and has no cracking anywhere and level. The screed...
  14. M

    Tarmac Flowing Screed - Yorkshire & Humberside

    Local, concrete & flowing screed specialists. Competitive rates Quality assured concrete & flowing screeds Small loads of concrete from 0.5m3 to 4m3 Flowing screed loads from 1m3 to 6.5m3 Dedicated flowing screed plant Free technical advice for DIY & building projects Direct Message us for...
  15. N

    Screed / SLC over old marleys

    Hi all, I have a room full of old asbestos marleys in good condition (apart from a few chips by carpet grippers). Can anyone recommend a screed / slc to go directly over the top of the tiles? I don't want to pull them up. Thanks
  16. W

    Crumbling screed, possibly magnesite

    We are currently renovating our kitchen in a 1930s flat. We pulled up some lino floor which was backed with sheets of MDF. When we started to pull up the MDF we noticed some kind of underlay / screed that had been painted green but with a red core. The screed is incredibly crumbly and looks like...
  17. P

    Porcelain tiles on a screed floor

    Hi All I am just about to tile my porch floor which is screeded. The surface is completely sound but is 35 years old having had carpet tiles on it for the entire duration. Do I need to seal it up using something like primer G before I start tiling? Thanks Peter
  18. A

    Green screed adhesive

    How de we feel about Mapei green screed adhesive? anyone had any bad experiences with it ?
  19. C

    Porcelain to anhydrite screed whats your favorite method?

    Hi i'm self building my own barn conversion and have a anhydrite screed and underfloor heating. Screed was laid 8 months ago and latence removed about 5 months ago, the heating cycled during the winter but off now as its 'summer'. I dont have any way of testing if its dryed out but have had a...
  20. R

    Oundle area PE8, approx 35m of 900x600 15mm limestone.

    It will need decoupling membrane which I have. Theres also a few meters in a passage that will need raising up approx 10mm with latex(?)

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