Quick question on creating a slab for underfloor heating. I have an existing slab that I have no plans to remove. I'm thinking to:
add 200mm of insulation to it (above the existing slab)
put down some light weight mesh sheets (a142, d49, d98?)
cable tie the heating pipes to the sheets
pour a 50mm liquid screed over it
are there any problems with this approach? thermal expansion rates of the metal vs the screed? depth of screed too shallow? does it weigh enough to effectively compress the insulation and provide a firm base?
add 200mm of insulation to it (above the existing slab)
put down some light weight mesh sheets (a142, d49, d98?)
cable tie the heating pipes to the sheets
pour a 50mm liquid screed over it
are there any problems with this approach? thermal expansion rates of the metal vs the screed? depth of screed too shallow? does it weigh enough to effectively compress the insulation and provide a firm base?