HELP Please ASAP How deep to pour finish floors?

Goll Mac Morna

Hello all
We are coming to the end of our build and are about to pour finish floors.
A flooring contractor is to pour a concrete screed to bury pipework etc.
We have left the depth of a block (4'' or 100mm) to allow for this.

Our builder has all the door frames in place 'floating in the air' four inches above the sub floor waiting for the finished floor.

The flooring contractor is due to come to us on Thur or Fri of this week.

The question I have is ... can anyone offer/ suggest the best method for fixing wooden floors and therefore what depth to leave to account for this.

We plan to have a 20mm solid oak floor in two downstairs rooms and tile the rest (hall, kitchen, utility, toilet).

Most people say '...allow 10mm for the tile and adhesive...'.

On the wooden floor a no of people have suggested using 5/8 inch plywood and nailing the floor to this so this would involve leaving approx 30mm or 35mm in these rooms.

Could anyone offer advice from experience on what is the best depth to leave ?
What is the best approach to take?
Thanks a million
Goll

ardara1

The Minimum screed depth should be 65mm - but normally 75mm is used.

Is the insulation already in under the slab?

if you're stuck, you could 'Float' the floor. Insulation then 18mm chipboard/ply glued all edges (T&G) - then finished wooded floor over.

muffler

This is also posted in Gardening/DIY. Once is sufficient to post the query.

Locked