Aluminium Heat Diffuser Plate: Even Heat for Joisted Floors (video guide)

The aluminium heat diffuser plate from MaxHeatUFH is a spreader plate for underfloor heating in joisted or battened timber floors. The pipe clips into the channel and the aluminium spreads its heat across the deck above, so the floor warms evenly.

Here is how it fits and what to check, with the data sheet and install manual to download below.

Key facts

• For joisted or battened timber floors
• Pipe clips into the channel
• Single, double or triple channel
• Single channel plate: 1000 x 140mm
• Can be trimmed on site
• Air gaps cut heat output. Keep plates against the deck

How to fit it

1. Lay at least 50mm of rigid insulation on battens so plates sit level with joist tops
2. Start at least 250mm from the wall
3. Leave 5mm gaps and never overlap plates
4. Pressure test all loops before the deck goes down
5. Check every plate touches the deck; wear gloves, edges can be sharp

Buy it

The Aluminium Heat Diffuser Plate is available from MaxHeatUFH. Order by 12pm on a working day for next working day UK delivery. Trade customers see their trade price when logged in.

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