How To Apply Attic Insulation At Eave Space

With a finished attic insulation must help keep the attic areas comfortable.

How to apply attic insulation at eave space.

Both can be added to uninsulated attics or layered over existing material. Press the wires up against the insulation and the pointed ends of the wires will dig into the joists holding the insulation in place. Apply a 2 inch layer of spray foam insulation r 10 to r 12 directly to the interior surface of the roof sheathing. Five common causes of poor attic venting.

Loose fill or batt the common term for blanket insulation. Homes insulated with it can be some of the most efficient and comfortable homes built. I ve been in plenty of these homes and can tell you that when spray foam is installed properly they outperform 99 of fiberglass batt insulated stick built homes. A finished attic should be insulated much like the rest of the house with insulation in the walls and ceiling.

Space stay wires about two feet apart. For diy attic insulation you ve got two choices. Secure the insulation using stay wires. Aluminum or vinyl soffits eaves installed over plywood soffits that don t have venting holes.

Design the roof to allow full insulation over the top plates of the exterior walls. These are precut lengths of 14 gauge spring steel wire that are slightly longer than the space between the joists. Install air chutes or clear them if they re clogged photo 1. Generally spray foams have to be applied by a professional.

That means insulating the attic floor only not the walls and having vents in the roof. Spray foam insulation is a great product. You can then apply batt insulation around the foam without worrying too much about the air space. Once you ve decided which type is best for you examine the material options and prices to home in on the right product.

This will keep the surface warm and help minimize condensation. Install raised heel trusses or use another roof framing method that allows space to install insulation over the top plates of the exterior walls or install high density insulation to achieve an r value that meets or exceeds code minimums for attic insulation. For decades the typical solution to this problem was to install ventilation baffles near the eaves connecting the air space above the soffit vents with the attic and then to install as much fluffy insulation usually fiberglass or cellulose as there was room for between the top plate of the exterior wall and the ventilation baffle.