Any refurb builders about?

[gtr-gaz]

I was wondering about floor screeds.

We have a couple of old quarry tiled floors laid directly on the dirt. I want to dig them up, lay a couple of inches of sub-base, insulate the floor with polystyrene, screed over and relay the tiles.

Any idea how thick the screed needs to be, bearing in mind that with insulation under it, it may feel a bit flexible!?

Thanks.

[Autonotiv]

6" of Scalps,
Sand blinding,
DPM,
100mm concrete,
100mm insulation,
UFH if you want it,
75mm screed,
tiles,

Edited by Autonotiv on Sunday 26th April 18:24

[V12Les]

Autonotiv said:

6" of Scalps,
Sand blinding,
DPM,
100mm insulation,
UFH if you want it,
75mm screed,
tiles,

Think i'd add 100mm of concrete and go with 50mm of screed.

[gtr-gaz]

Thanks, I'll go for 75mm of screed then

Only going for 50mm insulation though. Does not have to comply with building regs.

[mrmaggit]

Get your screed suppliers to put fibres in, Not a lot of cost, but will significantly increase the strength.

[gtr-gaz]

mrmaggit said:

Get your screed suppliers to put fibres in, Not a lot of cost, but will significantly increase the strength.

Ah, good idea!