Most building codes require a specified minimum amount of headroom. It's often tough to meet this requirement when insulating a finished attic, especially since most codes require insulation equal ...

Similarly to fiberglass, blanket insulation is a great soundproofing material, helping to block sound as well as keep heat in ...

You should lay an appropriate (usually R-30) insulation on the attic floor, but avoid tucking it down into the area where the roof rafters meet the top of exterior walls and joist.

E19 | Attic Insulation, Parking Spot | Ask This Old House. ... Ross Trethewey helps a homeowner dealing with ice dams decide whether to insulate from his attic roof rafters or the attic floor.

A: You are correct and your girlfriend is wrong. Insulating between rafters will do no good, because the attic should be ventilated, and the rafter insulation would be between two unheated spaces.

Q: I am checking into having the fiberglass insulation removed from my attic floor and going with open-cell foam. At first, I leaned toward having the foam sprayed into the floor, where the ...

A worker sprays foam insulation onto rafters in an attic. Highlights The typical cost range to install spray foam insulation in a home is between $1,409 and $4,145, with a national average cost of ...

Roofing insulation gets installed on the roof slope, above and below the rafters, while attic insulation is installed in the ceiling pane. Roof insulation is especially vital if your home has a ...

Q. I have an attic that was just remediated for vermiculite insulation. It is wide open. A company said I should insulate the roof rafters instead of the joists (the floor) and board up the ridge ...

However, I do have a concern about spraying foam directly on the underside of the roof sheathing and rafters. Closed cell insulation will not allow water to pass through it.

The rest of the ceiling space is created by the underside of the roof rafters. The slanted ceiling is a huge problem area. Many Cape Cod roofs are framed with 2-by-6s and, on rare occasions, 2-by-8s.

It is not critical how neatly the foil is stapled under the roof rafters. Most two-sided foil is reinforced with nylon mesh. Low-cost single-sided foil is the least expensive type.