Attach the insulation to the rafter scab board by the paper flange, so as not to compress the fiberglass. Use 3/8-inch heavy-duty staples every six inches.
Note: Blown insulation may require an additional block to prevent insulation from being blown into the soffit. Staple it to the rafters or scabbed-on boards with a staple gun so that the paper backing is toward the interior of the room, to act as a vapor barrier. Once they are in place, you can then place the batts or blankets, or blow insulation, right out to the very edge of the attic floor. If the rafters are deep enough, batts are the. Rafter vents should be placed in your attic ceiling in between the rafters at the point where your attic ceiling meets your attic floor. There are circumstances where a horizontal ceiling and attic space above do not meet the design needs of a building. Rafter insulation is a great solution if you want to insulate the loft space, but still want to use it the rafter insulation will ensure it is kept warm. There are two ways to insulate a roof: Warm Deck this is where the insulation is placed on top of the rafters/joists and the roof covering is then placed over. CEILING INSULATION See BELOW Roof insulation - Roof insulation may be fiberglass batts or rigid insulation. Rafter vents come in 4-foot lengths and 14-1/2 and 22-1/2 inch widths for different rafter spacings.
Rafter insulation install#
To install the rafter vents, staple them directly to the roof decking. Tiling battens Cross/counter battens GUTEX Ultratherm GUTEX Thermofibre/GUTEX Thermoflex between rafters. Rafter vents ensure the soffit vents are clear and there is a channel for outside air to move into the attic at the soffits and out through the gable or ridge vent. Complete coverage of the attic floor along with sealing air leaks will ensure you get the best performance from your insulation. To completely cover your attic floor with insulation out to the eaves you need to install rafter vents (also called insulation baffles).