A fundamental requirement of an unvented attic assembly is the use of air impermeable insulation on the underside of the unvented roof to prevent air infiltration and exclude airborne moisture from the attic.
Improve attic envelope.
The second is to prevent interior air or water vapor from reaching the concrete by installing a layer of rigid foam with sealed seams on the inside of the foundation wall.
These vents allow outside air to enter the attic at the lowest point of the roof along the underside of the eave.
I think the best solution is to keep the envelope at the attic floor with airtight drywall and use more thickness of less expensive insulation.
Epa estimates that homeowners can save an average of 15 on heating and cooling costs or an average of 11 on total energy costs by air sealing their homes and adding insulation in attics floors over crawl.
This reduces latent air conditioning loads and provides further reductions in energy consumption.
Additionally we apply our roofing and building envelope experience to solve many of your other ventilation problems.
Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents.
As part of installing a proper roof venting system arr can install baffles at the eaves area of the roof under the sheeting or roof boards.
Another benefit of giving your home a thermal envelope with great insulation is to provide it with a great sound barrier.
Air that leaks through your home s envelope the outer walls windows doors and other openings wastes a lot of energy and increases your utility costs.
Spray foam insulation is more expensive than batt insulation and needs to be expertly installed to prevent missed areas or pockets that can reduce the efficacy of the building envelope.
Increasing the thickness and r value will improve the hers index.
You improve insulation value.
One way to make your home more energy efficient is to increase roof insulation.
Poor workmanship during attic and roof installation will result in expensive callbacks and repairs as insulation will have to be replaced.
If your home is fitted solely with small gable end vents or a ventilator high in the roof you might want to consider adding soffit vents to increase airflow.
Intake vents located at the lowest part of the roof under the eaves allow cool.
Using open cell spray foam can help to reduce or remove the noise in your structure.
Extra insulation helps to make your home warmer in the winter and cooler in the summer.
The attic or ceiling is a great place to start especially if your next to an airport.
