Old House Roof Insulation

Cold areas require a higher r value like an r 49.

Old house roof insulation.

Place a new layer of unfaced batts perpendicular to the old layer to cover any gaps in the lower layer. Even if you bought the house with insulation already installed into it it s best to double check. Wood can wet without issue but keep it wet and then the problems arise. The insulation materials used in older houses are not as effective in keeping heat in as the new ones.

Just because you find insulation in one wall doesn t mean that it s everywhere in the house. Replace old windows with energy efficient units. If you have an unfinished and unconditioned attic like many old houses my first recommendation would be to add batt insulation on the underside of the roof. This old house general contractor tom silva shows how he installs roofing and siding to keep a house buttoned up and dry.

Increase your r value by layering insulation. One way to insulate walls of an old house is to focus on the home s exterior. Your area may have a different standard so be sure to check first. The bigger they are the thicker the insulation you can fit.

Attach 1 inch foam board insulation. Pull out a small amount of insulation if needed to help determine the type of insulation. The format of house insulation you need depends on where you put it and if you need to control moisture. Install siding over the insulation.

Strictly speaking there s no practical upper limit for attic insulation depth. You can buy them unfaced or simply remove the paper or foil backing. Old house insulation strategy 1. Layer more insulation over the old for more effectiveness.

Here are just a few of the highlights. Measure the size of the roof rafters. Cutting batts of fiberglass insulation a neat trick for making tidy cuts. You have many choices for your insulation batting.

If you live in a warm climate you require a lower r value. The insulation must meet doe standards. Are they 2 6 2 8 or bigger. Maximize attic insulation this is simple and not particularly unique to older homes but it s also the easiest and least expensive energy upgrade you can do.

Like other batt type insulation fiberglass has a predictable r value if not compressed but is difficult to fit around obstacles without leaving gaps. Always use unfaced batts both when laying product for the first time and to prevent moisture from becoming trapped between new and old layers of insulation. You should be able to see if there is insulation in the wall and possibly how thick it is. Fiberglass batts the insulation found in most houses in the u s are inexpensive and quick to install.

In most climates it needs a vapor barrier. The attic is often the easiest place to add insulation. Caulk window trim and use weatherstripping to reduce air leaks. Adding insulation where it was never designed to go mainly the walls of an old house causes a host of problems all due to the moisture issues it creates.