Insulating Attic 2x4 Rafters

There are no soffit vents 5.

Insulating attic 2x4 rafters.

There are four roof mounted vents no ridge vent no gable vents 4. If your attic is going to be converted into livable space then you will need to insulate the roof rafters. If you re considering turning your attic into conditioned storage or living space it s worth changing tactics to insulate between the rafters and wall joists instead of the floor. Two knee walls with no insulation 6.

2x6 on 24 center floor joists no insulation between joists 3. If your rafters are only 2x4 either you ve got about 400 sqft or you ve reinforcement load bearing partitions beams somewhere. 2x4 on 24 center rafters 3. Install ventilation baffles into the space between the rafters before you install the insulation usually by stapling into place.

They are directly below the roof sheathing and are were insulated with fiberglass batts stapled between the 2x4 rafters. I added insulation to my attic rafters and plugged the space between the outdoors and my attic with insulation. Shaded or north facing roof pitches would be the most susceptible but with only 2x4 rafters and likely r13 or less the roof deck runs warmer drier than if it were insulated to current code min. Let s say you ve 384 sqft of ceiling to cover.

Whether there is a real hazard or not depends primarily on your local climate climate zone as well as your shingle color type and shading factors. There are some unfinished crawl space areas in the corners on the upper floor. You can use rigid foam panels or do as tom silva does with nearly all houses these days. It lowered my heating bill by 150 month but i ve seen some information that i may have made a mistake by cutting off the airflow in my attic.

Option 2 has the benefit of preventing any thermal bridging via the ceiling joists. Hire a pro to install spray foam insulation.