In message , The Natural Philosopher
writes
On 21/05/2019 09:24, Tim Lamb wrote:
In message , The Natural Philosopher
writes
On 20/05/2019 21:27, R D S wrote:
On 20/05/2019 19:49, The Natural Philosopher wrote:

First though is te floora groud floor. 1" of insulation is not
enough* for a ground floor. 6" minimumum

*It is a ground floor, is that right? That would be disappointing,
though* I can see the danger of heating the space under the house.

Ah. You didn't mention* it was a suspended floor.

Lift it, and put 6" celotex between the joists, tape over, and then
lay your pipes on top

No need for poly ,poulding. Just use big plastic staples to located
them to the celotex If the joists are stable you can screed/tile or
else overboard with ply and engineered wood.

Aim for a spacing of around 4" between pipes to get best output.
Umm.. you have to slot the joists for the pipe return.
What about 'I need the floor and inch higher' did you not get? simply
add 1" batten to the joists after the pipes ate laid in between the
pipes.

An alternative is
to use the pre-formed 22mm slotted flooring chip plus your choice of
overboard. If you fancy ceramic floor tiles there are cement based
boards for this.


Those laternatives only make sene if yuopu have a team of three on 200
a day each and te labour saving is worth the cost of the special board.
:-)
I laid the pipe and Angela managed the pipe reel. Which is now redundant
and available for a few beer tokens.


Have a look in here or one of their many competitors
*https://www.thefloorheatingwarehouse.co.uk/

--
Tim Lamb