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should thermal insulation ever be applied directly to the underside of a roof top?
- Should it be done, No. Thermal Insulation is put direftly above the ceiling. Not on the actually roof top. The reason being, that even though both methods will trap in heat, With the insulation on the arches of the roof, it still allowing heat into the Attic, Or roof space. This means that the top of the roof will infact be the warmest part of the house, and lot of heat will be lost. from the main rooms of the house.s
Best roofing insulation against radiant heat (sun)...pls help.?
- look into a product called "Snow Roof". You roll it on like paint and it will lower inside temp 10-20 degrees.s
Without loft insulation ,the roof space is full of air.Why does this not keep the heat in?
- The warm air that collects in the attic is in close contact with the roof, heat is conducted through the roof and lost to the atmosphere.s
Metal Pan roofing insulation?
- you do now not desire insulation for this application. in case you have now not offered the metallic yet i might advise searching for a status seam roof equipment that the panel would not are available touch with the substrate and would not use uncovered fasteners. If contained sooner or later you probably did be certain to surround the porch and upload warmth you ought to insulate the ceiling and depart an air area below the decking that ought to be ventilated from the eave to the ridge. a chilly roof assembly with proper air flow will dramatically cut back the flexibility of the metallic panels sweating.s
what's the best insulation for ceilling for house with semi flat roof?
- The pitch of your roof has nothing to do with the kind of insulation you should use. I recommend a fiberglass insulation that is at least 6 inches thick, the more you put in the better.s
If a roofing contractor offers an insulation material with an R value of 2.5 instead of 3?
- You don't want that. If he offers 3.5 instead of the required 3, that is a different story. Otherwise he should give you more material thickness to provide an equivalent R of 3. Yes, the difference can be substantial and I wouldn't forward it to the client. The smaller the R value of the entire roof sandwich the larger the difference it makes. Like the change from 5 mpg to 4 mpg is a 25% worsening in fuel economy, but a change from 100 mpg to 99 mpg is 1%. It will mess up the heating/cooling of the building and the mechanical systems might be inadequate. They could save money on the roof and complain how the building is too hot/too cold or the mechanical systems never shut off and their energy bills are too high.s
Is mineral wool any good for under roof insulation?
- Yes, be sure to leave an air space between the top of the insulation and the roof deck to allow for ventilation, and use a vapor barrier on the interior side of the insulation.s
Foam insulation spray roofing, Greenest way to build?
- it is one of the strongest roof sealers and the best insulator availables
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