Looking for advice on what type of insulation to use for the roof of our kit home. Construction is steel frame with the standard top hats and zinc alum sheeting.
The ceiling inside the house is open cathedral, or raked, with a 20 degree pitch. Ceiling will be gyprocked between the trusses only. All internal dividing walls (2.7mt) do not go to the ceiling.
There are also two awnings down each side of the house which I want to insulate as well, but these won't be lined underneath.
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For the gabled roof area I was considering CSR Anticon 55mm or Reflect-Guard. Problem is what do I do with the side awnings. Do I need to use the same product over the whole roof area so the insulation has no break / joins on its way to the gutters.
There is a total of 235m² of roof area to cover. The Reflecta-Guard ($280 / 30m²), is almost twice the price of the Anticon ($95 / 18m²) but if I use Anticon out on the awnings as well, will the visible underside look OK from under the awnings? Has anybody fitted Anticon on an awning?
Alternatively, could I use the Reflecta-Guard on the gable and the cheaper Reflecta-Shed on the awnings. Does it have to be the one product in a continuous run out to the gutters?
Apparently the Anticon blanket is better for sound proofing with rain on a tin roof. Although, I have been advised by a local builder that it condensates and causes rust. ??
jnk40
P.S. Is it a requirement to fit sisalation paper in addition to the above products.