Insulation Between Roof Trusses

Improving your home s energy efficiency rating.

Insulation between roof trusses.

Other benefits of roof insulation include. It creates a breeding ground for mold and mildew and ruins the air trapping pockets that block heat flow. Consider using high density r 30 batts which are as thick as r 25 batts but fit into 2x10 framing. Increasing your home s value.

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. 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. Insulation between the joists keeps warmth in your living space below and creates a cold loft while insulation in the rafters allows you to keep warmth in the roof space as well. With a regular roof insulation isn t a problem.

Water is insulation s enemy. The bigger issue comes around when you are dealing with a roof that has exposed trusses cathedral ceilings or specialty open ceilings. A vent baffle should be installed between the insulation and the roof decking to maintain the ventilation channel. 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.

To insulate the underside of the ceiling between rafters you ll want to add insulation to the exterior portion of the finished ceiling. The benefits of insulating a building around the outside protecting the structure and effectively creating a tea cosy effect are well publicised.