Wet underfloor efficiency

[David_Jones]

Hello,

I need some advice on my DIY wet under floor system I installed in my new build house.
Basically I have fitted JS speedfit15mm pipe into 100mm insulation foam board by routering the pipe slot into the foam and then pressing the pipe into the foam slot at 200mm centres.

I then placed chip board flooring on top of the foam/pipe setup.

Its all quite tidy and I was chuffed with my efforts.

However I have been told that I should have user spreader plates in my under floor construction (these are aluminium plates that hold the water pipes at 200mm centres) and help significantly distribute the heat from the water pipe into the rooms.

Is this true?

I assumed the spreader plates was just a way of holding the water pipes in place at 200mm centres and no efficiency gain


Or is some one just trying to drum up some extra work?.

But if it's right can anyone tell me how much efficiency I'm loosing?.

If its only 5% then its worth leaving however if its 100% them I best fit the plates.

I would be grateful for any relevant feed back.

Thanks, Dave

 

[townfanjon]

Dave, have you made your own 'grooves' in the insulation board or was it a purpose made board for UFH.

 

[Ermintrude]

No buddy. You need plates or a biscuit mix the biscuit is 10000% better as its a thermal mass and it dosnt ting

Also by removing foil you have rendered the insulation unless as now it absorbs heat but won't transmit it. Foil reflects heat[emoji16]

Rip it up. Lower insulation by 30mm and flip insulation.

 

[SimonG]

How you know 200mm centres gives you the necessary heat input into the rooms?

What manifold set up have you?

What form of temperature control?

Lastly, where do you live? If the house comes up for sale I would want to make sure it wasn't near me.