And you may also qualify for a tax credit on the blown in attic insulation cost check with the irs or at energystar gov.
Attic insulation too much.
If a home is over insulated and is too tightly sealed moisture can get trapped inside.
Poor insulation is usually the culprit although if you enter the attic on sunny winter day your attic space can be warmed by the sun more than your furnace.
Too much insulation is not a problem.
Unless your roofing system has insulation on the roofing deck and is designed without ventilation your furnace should not be heating your attic.
However there can be a downside if your insulation material is blocking your vents.
Loose fill or batt the common term for blanket insulation.
The point of diminishing returns.
Twelve inches is often plenty when one or more of these situations is true you re going to need more insulation.
Both can be added to uninsulated attics or layered over existing material.
The long term payoff of insulating an attic is impressive too.
The right amount of insulation in a home be that attic walls or floor will of course vary by region.
To get the best idea designers should conduct specific energy modelling and make key decisions based on balancing performance.
Add the right kind of insulation.
It is therefore important to allow the entry of fresh air into your attic to prevent the build up of humidity.
Your attic vents allow warm air to expelled more naturally replacing it with cooler air from outside.
The higher the r value the better the thermal performance of the insulation.
For diy attic insulation you ve got two choices.
Once you ve decided which type is best for you examine the material options and prices to home in on the right product.
Your attic should have a certain amount of insulation in it and the recommended level of insulation for your attic is dependent on where you live.
When you can see the joists you definitely need more insulation.
The recommended level for most attics is to insulate to r 38 or about 10 to 14 inches depending on insulation type.
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.
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.
Most homes will keep fairly cool with just six to eight inches of insulation but over time insulation settles so having a little extra doesn t hurt.
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.