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    Decoupling mat advice

    Hire a temporary boiler. Cheaper than replacing the tiles
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    Wet room tray ...

    Yeah that's about what I thought. Ah well.... Needs must I guess.
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    Wet room tray ...

    I have a walk in shower room ... Sort of a wet room but not quite. I used a kerdi style wet room former (can't remember the actual brand but cement faced styrofoam) and tiled with slate mosaics which have begun to show some issues with flaking. I would like to replace them. Is there any way of...
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    Anhydride screed problems

    Possibly it can be dried and then hardened using a low viscosity penetrative epoxy resin like PHS from flowcrete. Otherwise it might be easier to remove and replace. 60mm is OK. Looks thinner in the pic but that might just be perspective.
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    Anhydride screed problems

    My guess is water has been getting in from the shower. It looks very thin. Is it soft?
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    Is this overkill for a tiled floor?

    The only way to tell if its dry is yo test it. If you can't get bothered yo test it I'd treat it as if its damp. You could dispense with the second layer of NA if you used a gritted primer but the cost might not justify so I'd go with the spec in the OP. Yes it would suit a wooden floor as well
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    Tiling onto self-leveller

    All the same rules apply to cement based liquid screeds that are in place for anhydrite/gypsum screeds. The only exception I guess is that you can use a cement based adhesive. ALL screeds should be dried, sanded, vaccuumed, heating comissioned and primed before tiling. uncoupling depends on the...
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    Thoughts on CTD prices & redundancies?

    Cement and polymer prices skyrocketed last year which is partly why prices have gone up so much.
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    Best practice for a large (120sqm) tiling job

    Underfloor heating should never be air pressure tested. It should always be tested when water filled. I assume you mean 75mm and not 7.5mm. Tiles should never be installed until AFTER the underfloor heating has been commissioned and run. It is not essential to uncouple porcelain but given the...
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    Thoughts on CTD prices & redundancies?

    Retail is generally cash with purchase so no credit exposure. Trade accounts generally pay after 30 days or so. Housebuilding, which i guess takes up most if the tiling work, has dropped off a cliff over the last few months so I'd guess they are trying to protect themselves from trade customers...
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    Mould under lifted tiles?

    Probably algae rather than mould.
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    Groundwork company refusing to guarantee work - is this right?

    I think the word guarantee is bandied about too readily. Most people look for a written document of some description which in all honesty is generally a worthless sales tool. Any tradespeople supplying goods or services are bound by legislation under the sale of goods act at the very least, and...
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    Large format tiles on liquid screed

    Anhyfix is no longer available
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    Looking for advice with cement burns

    Gloves. If you get cement on your skin wash it off quickly. Unfortunately cement, when added to water, generates calcium and sodium hydroxide in solution making the pH very high (around 11). At this pH it degrades skin effectively dissolving it. However as the nerve cells dont tend to respond...
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    Slurry mix - ONLY WORKABLE FOR 3 HOURS?

    It says workable for 3 hours so will probably keep til the next day but only if you start mixing it at about 10pm.
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    Porcelain laid on sand and cement?

    Can't see the need for uncoupling outside. In fact in many cases it would seem counterproductive. Can't see a reason why this should fail anymore than any other install. Looks nice too. Might get a bit slippy though.
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    Amtico - but can we wait 5 months for floor to dry?

    There are lots of options depending on the screed type. Liquid DPMs, fast track moisture suppressants, uncoupling membranes, force dry techniques so it really depends on the screed type as to what you can do.
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    White marks on limestone tiles

    I'd say it is efflorescence?
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    Tiles not bonded to floor properly

    No it sounds extraordinarily incorrect. The floor should be dry to below 75% to be suitable for covering. 97% is far too damp
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    Tiles not bonded to floor properly

    97% dry?? What does this mean?

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