What Insulation For Attic Ceiling

Insulate your attic outer walls and crawl space first as these areas have the most heat transfer.

What insulation for attic ceiling.

Ensure conditioned attic insulation strategy is compliant with local. Find your zone on the map and then use the above insulation r value chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces. How to insulate a finished attic. If you put an air permeable insulation material over a hole in your ceiling you may have comfort indoor air quality durability and efficiency problems.

For diy attic insulation you ve got two choices. Before you ever get insulation anywhere near the attic though make sure that you get the air leakage sites sealed up. Ensure insulation extends to the outside edge of the exterior top plates and to the peak of the cathedral ceiling. What is the right insulation for an attic.

Both can be added to uninsulated attics or layered over existing material. Once you ve decided which type is best for you examine the material options and prices to home in on the right product. R value is a measure of insulation s ability to resist heat traveling through it. With a finished attic insulation must help keep the attic areas comfortable.

The table below shows what levels of insulation are cost effective for different climates and locations in the home. Friction fit insulation between and parallel to the attic framing members. 2d extend insulation into joist space to reduce air flows. That means insulating the attic floor only not the walls and having vents in the roof.

So it s time to pay close attention to what s happening up there. Ensure ends of insulation are butted together and flush to underside of framing. These r values are a sum meaning this should be the total r value once you add up the entire depth of insulation. Adding insulation to your water heater can reduce standby heat losses by 25 to 45 percent.

Loose fill or batt the common term for blanket insulation. A finished attic should be insulated much like the rest of the house with insulation in the walls and ceiling. The higher the r value the better the thermal performance of the insulation. Insulate water heaters to prevent costly energy loss.

Air migrates from warmer spaces toward colder spaces and insulation is designed to help prevent or at least slow that migration. Look for insulating pre cut jackets or blankets with an insulating value of at least r 8.