S
stu
- Jan 1, 1970
- 0
I'm about to insulate the top 10 inches of a cavity wall that is in the roof
space. Its 3 3/4 inches deep, I was planning on putting fibre glass
insulation in the cavity and then putting sisalation over it. Would there be
much benefit from making the fibre glass 3 inchs thick and having a 3/4 inch
air space between the fibre glass and the sisalation?
I'm also toying with the idea of some home brew underfloor heating. All the
systems I have seen on the net use PEX or PEX/AL/PEX pipe. I priced PEX in
Australia and its $800 for a 200m roll of 16mm. If I am going to use
plastic, stainless steel or brass for the fittings, tank and pump etc, is
there any other reason that I would need to use PEX pipe instead of normal
poly pipe?
Thanks
space. Its 3 3/4 inches deep, I was planning on putting fibre glass
insulation in the cavity and then putting sisalation over it. Would there be
much benefit from making the fibre glass 3 inchs thick and having a 3/4 inch
air space between the fibre glass and the sisalation?
I'm also toying with the idea of some home brew underfloor heating. All the
systems I have seen on the net use PEX or PEX/AL/PEX pipe. I priced PEX in
Australia and its $800 for a 200m roll of 16mm. If I am going to use
plastic, stainless steel or brass for the fittings, tank and pump etc, is
there any other reason that I would need to use PEX pipe instead of normal
poly pipe?
Thanks