How To Insulate Roof With Trusses

A variety of insulation materials can be used to insulate scissors truss roofs as long as.

How to insulate roof with trusses.

Using panelized roof sections. It creates a breeding ground for mold and mildew and ruins the air trapping pockets that block heat flow. For rolled insulation place it between roof rafters. Like ordinary roof trusses scissors trusses come with or without a raised heel sometimes called an energy heel.

The basic approach to insulating a roof with exposed rafters involves placing insulation on the exterior side of the finish ceiling and covering the insulation with a layer of sheathing. The screws secure the counter purlin to each rafter or top chord. In a warm roof structure the insulation is placed above or above and between rafters in order to avoid heat loss and energy transfer. In the case of a cold roof structure the insulation is placed between or between and under the rafters or at ceiling joist level and the roof is ventilated by leaving a 50mm gap above the insulation which vents air to the outside.

Look for water stains on the roof sheathing or damp or moldy spots on attic joists and existing insulation as a clue to where leaks might be. If you want to keep your exposed roof trusses visible then the easiest way to add some. If you have a solid floor covering the roof rafters use the claw end of a hammer to pull the floor up in several locations and blow the insulation under the boards. Exposed roof trusses are often an integral part of a room s architecture and vibe.

Water is insulation s enemy. I would really like to get more than r 13 and the current installation is probably providing r 1 with all the missing pieces. If you ended up with scissors trusses without raised heels. They are directly below the roof sheathing and are were insulated with fiberglass batts stapled between the 2x4 rafters.

Replace the floorboards and then spray more insulation on top of it.