carpet with underfloor heating

got a carpetright job on monday where the customer wants a hessien backed carpet bonded direct to subfloor without underlay
the subfloor is wooden but has underfloor heating
have advised customer to switch off the heating today and gradually increase the heat after 24/48hours

basically the question am after is can i use F3 or do i need a specific adhesive as normally only durafitted before with tackifier first but never on UFH

Many thanks in advance

 

What's the tog rating of the carpet ?

 

You can use f3 over ufh

 

Its not meant to exceed 2.5 with carpet and underlay I believe. I recently used roma with Brockway over ufh.

 

not a clue on the tog its just going straight down wothout underlay it is hessien backed tho

 

The lower the tog the better, if the carpet has a high tog rating, it will limit the amount of heat to that comes through.

 

1.5 tog is ideal, shame it's not being fitted on roma/heatflow underlay hate secondary backings straight on the deck lazy crapetsh**e staff