Underlay for laminate over underfloor heating

[Aristocrates]

I've just had underfloor heating pipework installed over the top of an existing (insulated) suspended floor. I want to reinstate the laminate flooring that was there before, but am wondering whether I can reuse the existing underlay, or need a different type for this type of underfloor heating.

The current type is this: https://www.wickes.co.uk/Wickes-Woo...ing-Underlay---10-03m2---Pack-of-20/p/215589#

 

[dazlight]

You need to screed it 1st at 8mm with a smoothing compound. Then go with something like QS therm underlay

 

[crazydaze]

Once you encapsulate the UFH as described above, do you have the TOG rating of the UFH system?

Ideally you shouldn’t overload the UFH system and it should have a TOG rating that the underlay and Laminate flooring should not exceed combined.

The best UFH underlay for Laminate and wood floors is Duralay Heatflow (they do a wood floor and a carpet version so get the correct one!) it has a lower TOG rating at 0.35 Toga than the 0.70 Tog listed on the one you have chosen from Wickes.

Duralay Heatflow Wood & Laminate Underlay - Interfloor

A specialist range of low-tog underlays from Duralay that bring a warm glowing feeling to any floor. Duralay Heatflow underlays, all have lower ‘tog’ ratings, which allow the warmth generated by underfloor heating to pass quickly into the room. They conduct more heat than other underlays, making...

www.interfloor.com