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FAQ

on a traditional pitched roof construction,where is heat insulation usually provided?

The insulation is always placed in the rafters, leaving the rest of the attic space ventilated. That's why it's so important to cover every opening with screen to keep birds and animals out.

does insulation, with a high R value, in the attic prolong the life of the shingles on the roof.

I partially disagree with the previous answers. Ventilation does help tremendously BUT in the winter a high R value keeps the heat from going through the ceiling through the attic to the roof heating up any snow on the roof which causes ice & ice dams to form, which in turn will shorten the life span of your roof.

What's better- to lay out roof insulation in an old house or to get it blown in?

Blown in. It's better and also cheaper to have the insulation blown in. It's better because the insulation will go around wires, ductwork, and pipes much easier. It can get into nooks and crannys easier. It's much quicker also.

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.

attic insulation

Blow in insulation is so easy and cost effective, do it yourself. Machines can be rented at Lowes, HD, etc where you buy the material.

What is the difference between roof and loft insulations?

Potentially that the roof itself is insulated on the underside. A loft insulation could be that the base or floor of the loft/ attic is insulated. Otherwise, I'm not sure.

the best way to thermal insulate and water proofing of rcc slabs economical, may be some poly urethane material or whatever but should be very effective and light weight.

use a polythene sheet . i dont know about where u live but where i live we get very long and broad size thick polythene sheets to make shelter or the protect from rain . even poor ppl use it to make slums . they attach a sheet in bamboo and they bury half of that bamboo stick inside the ground and by arranging 4 of them like this in a square area they make a bamboo frame. then as i said they attach sheet and make temporary home but they live there for years.

What are the roof insulation materials?

Polystyrene foam is divided into expansive EPS and continuous extrusion type XPS two: polystyrene board full name polystyrene foam board, also known as foam board or EPS board