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No heat calcs but as long as it takes the chill off the floor on a cold winter morning, then it's all good. It's only 4.2sqm There's a huge sheet of insulation under the pipes so should be good. All the heatloss will be through the sweet single glazed door 😂. The ply will be going down over the top of the pipes, then ditramat (sp?) then 60x40cm Limestone tiles over the top.
user67526-
sweet single glazed door
Not to bang on about it but it is a sweet door though
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Might as well not bother with the UFH! If there's ply and decoupling membrane between it and the tiles it'll be the least efficient heating system ever. You want the tiles, adhesive and UFH screed to be one solid slab.
At least you have rigid insulation under it all 👍
kkg337
dbr
UFH needs a screed poured over the pipes to encapsulate them. You'll need to wait weeks before tiling onto the screed. You can get quicker drying screeds for more money.
Has anyone done a heat loss calc for the room? Probably fine if it's a kitchen, but if there are three external solid walls and no insulation under the UFH pipes that room will never be warm. You may be able to mitigate some of this by reducing the UFH pipe centres to an absolute minimum. Plumber will moan but in a space that size it'll take an hour, and you only get to do it once. The joists may get in the way but a snail pattern allows for tighter spacing without 180º tight turns.