Insulating A Home Roof With A Closed Attic

Box out light fixtures.

Insulating a home roof with a closed attic.

Your home s r value score will guide you toward the type of insulation you need. Thus the air in the attic is connected with the air in the house. How to insulate a finished attic. A finished attic should be insulated much like the rest of the house with insulation in the walls and ceiling.

With a finished attic insulation must help keep the attic areas comfortable. Proper ventilation is key to protecting your roof and attic space. Insulating in and around your roof attic space also prevents long term damage from moisture build up or ice damming which results from the warm air trying to escape through the apex of the roof but instead heating up the snow. Whereas too little spray foam insulation can leave for thermal bypass because of the complete lack of insulation in the attic.

The r 13 faced batt insulation is comprised of the r 13 faced batt insulation is comprised of pre cut widths to fit between the studs and joists in your home. It creates a breeding ground for mold and mildew and ruins the air trapping pockets that block heat flow. Owens corning ecotouch insulation is soft to the touch easy to cut and install. Insulating the attic floor.

If you do not use the attic much it is pointless heating this area. 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. Moisture is also another huge issue when it comes to spray foam insulation in an attic. At the same time the areas below the roof benefit from increased comfort both during the winter and the summer.

In particularly cold climates you might go up to r 60. When the attic becomes part of the home to be heated and cooled open wall gable vents and roof vents are no longer feasible but the underside of the roof the sheathing and rafters can still. In general an attic s r value should be between r 30 and r 49. Image courtesy of the holmes group.

Water is insulation s enemy. If you leave the insulation in the attic floor after insulating the roofline the attic will be cooler in winter than if you remove the insulation. If there is inadequate ventilation or insulation you re looking at plenty of issues with your attic and roof that can range from mould rot ice damming and more. That means insulating the attic floor only not the walls and having vents in the roof.

Additionally insulation serves as a way to enhance sound proofing on the uppermost envelop of your house. So insulating the floor of the attic is not only the best solution but it is also the simplest and cheapest.