Too Much Blown Insulation In Attic

There comes a point where too much insulation starts to have a negative effect financially environmentally and in terms of the longevity of your home.

Too much blown insulation in attic.

Fasten blocking around the hatch or door to allow the material to be installed around this area without escaping. The previous owners had too much insulation blown in. This calculator is to be used as an estimating tool only. Input length width and desired r value of the area to be insulated.

So yes it is possible to over insulate your house. The wood sheathing on your roof under your shingles can rot or become dry and brittle. Too much insulation is not a problem. You d need a thickness of.

There is approx 8 12 thick covering the main portion of the attic while it s even deeper at the outer edges where the soffit vents are. To make it easy to eyeball how level the material is as you blow it in screw depth guides to joists throughout the space. However there can be a downside if your insulation material is blocking your vents. When blown into attics and wall spaces loose fill fiberglass offers an average r 2 5 thermal value per inch the higher the number the greater the insulating effect.

Click the button to calculate the depth in inches and pounds of total insulation required for this job. Inspecting your attic insulation first things first you need to go up into your attic inspect the condition of the insulation and calculate the current level of insulation. It s the type that looks like cotton pieces. The long term payoff of insulating an attic is impressive too.

Your attic vents allow warm air to expelled more naturally replacing it with cooler air from outside. Without proper ventilation a home can build up too much moisture especially in the attic warm air rises which can cause mold problems and overall lower indoor air quality. If a home is over insulated and is too tightly sealed moisture can get trapped inside. You could see your energy bills go down by as much as 15 to 25 percent depending on your climate and existing levels of insulation.

Make sure the fill s depth is uniform across the attic. There is no airflow and need to remove a large chunk of it. But saving 1 000 or more with blown in ceiling insulation will make up for your aching back. It is therefore important to allow the entry of fresh air into your attic to prevent the build up of humidity.

The point of diminishing returns.