I normally use pressure sensitive adhesive when doing Amtico or Karndean but last week had to use high temperature adhesive as I was going over underfloor heating. The job I did was for a kitchen/bathroom company and they supplied Project flooring for the customer. The point is I found the adhesive (F48) difficult to work with - as soon as I trowelled it out the stuff seemed to be going off. Some of the floor was tiles and some wood plank and I was cutting 3 rows at a time as this was about as fast as could work with. Was I missing a trick here - I could'nt see another way of doing it? Incidently the company that sold the floor did'nt explain anything to the customer about using the under floor heating and when I asked the plumber about testing the system (it was a new extension) he said "Oh we just bang it on maximum to test it mate". I said what is the maximum then and he said about 33C. I had to tell him it could'nt go above 27C and had to be gradually increased over time - he was amazed - well no one told me that he said. I did tell the customer - I just hope the plumber was'nt in too big a hurry.
high temp does go off fast mate, i have been using f46 with no issuses and even run at 35c and back down to 18c to see what happenes.
I am no expert on this but I did a job last year in Polyflor Expona over underfloor heating. I had a few queries and called Balls tech dept, they gave me a few pointers, one of which was to use F46. I was surprised by this but took there advice and there have been no problems. I'm thinking the high temp adhesives are more for conservatories and areas where there is strong sunlight such as in front of patio doors. Would I be correct in assuming this ? Ray
Iam assuming Ray that the heating was turned off (silly me for thinking otherwise) but i like using it and yes it is a bit pasty to paste out.I usually set out and cut first then glue as "TIME IS OF THE ESSENCE" ON THIS! but two people fitting this way then there should be no probs as long as you are organised i think.
it was fine mate, however i dont acclimatise the flooring to rrom temp. I always fit the flooring cold, it can only grow rather than shrink. On f46 you can pull a tile out and trim easy. Its alot harder to take a whole floor up that has shrunk!
Ive heard if you prime with diluted neoprine the glue (f48) takes longer to go off? therefore making it easier to work larger areas
I like that!,flooring going in colder than subfloor.Never had any probs with installing this way even though it goes against normal military fashion.
