Insulation Between Roof Trusses

With a regular roof insulation isn t a problem.

Insulation between roof trusses.

Other benefits of roof insulation include. To insulate the underside of the ceiling between rafters you ll want to add insulation to the exterior portion of the finished ceiling. When it comes to pitched roofs however adding a thick layer of insulation to the rafters can result in a depth of roof construction that may not. Consider using high density r 30 batts which are as thick as r 25 batts but fit into 2x10 framing.

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. The bigger issue comes around when you are dealing with a roof that has exposed trusses cathedral ceilings or specialty open ceilings. Convenience polyurethane or polystyrene spray foams can provide thorough coverage to roof rafters and attic walls in much less time than is needed for other materials. The benefits of insulating a building around the outside protecting the structure and effectively creating a tea cosy effect are well publicised.

It creates a breeding ground for mold and mildew and ruins the air trapping pockets that block heat flow. Water is insulation s enemy. Uneven or sloppy application however can make the insulation ineffective and unsealed open cell insulation can absorb moisture causing the roof to rot or leak. Box out light fixtures.

You can also add rigid foam insulation under the rafters which adds r value and eliminates thermal bridging through wood rafters. A vent baffle should be installed between the insulation and the roof decking to maintain the ventilation channel.