Upper Attic - Before
Blown-in fiberglass insulation is laid on the floor of the attic space. With no air sealing underneath, it's been offering little R-value and acting as an air filter for the escaping conditioned air.
Upper Attic - After
The blown-in fiberglass has been removed. The Attic floor has been air-sealed, and a fresh blanket of R-49 cellulose has been laid on the attic floor. This will help keep conditioned air in the home and reduce the heat transfer between the unconditioned attic and conditioned living space.
Lower Attic Knee Walls
The knee walls in the lower attic space are stuffed with fiberglass insulation. Fiberglass is only effective when it's enclosed on all 6 sides to prevent air from passing through it. In its current application, it's not keeping the room on the other side of the wall very comfortable.
Blown-in Fiberglass Insulation - Before
The attic space has been insulated with blown-in fiberglass insulation. Without air sealing, and the insulation only being the minimum requirements, heat transfer between the conditioned living space and unconditioned attic space has caused some condensation to occur on the ceiling in the living space.
Cellulose Insulation - After
After removing the blown-in fiberglass insulation, our team air-sealed all top plates, utility penetrations, and installed rockwood covers over the can lights. PVs were installed to prevent insulation from blocking soffit vents and to ensure proper ventilation in the attic space. Finally, a fresh blanket of R-49 cellulose insulation was blown-in.
Knee Walls in lower Attic & Attic Access
The knee walls are insulated with fiberglass insulation, which performs best when enclosed on all 6 sides when air cannot flow through it. The attic access is a traditional interior door that is not insulated or air sealed, allowing air loss and heat transfer between the living and attic space.
Foam Board on Knee Walls
We installed Foamboard insulation on the knee walls over top of the existing fiberglass insulation and sealed the foam board at all seams. This encloses the fiberglass on all 6 sides and creates an air barrier. The Foam board offers an additional R-10 insulation value as well. We also recommended the homeowner upgrade the door to an exterior style door that seals to help reduce air loss.
Lower Attic Knee Walls
Foamboard has been added overtop of the existing fiberglass which is sealed at all seams creating an air barrier and sealing the fiberglass on all 6 sides. This will help to prevent air from passing through the insulation and offers an additional R-10.