Ceiling Insulation Comparison

R value measures how resistant types of insulation are to heat flow.

Ceiling insulation comparison.

Construction workers fit sips together to form walls and roof of a house. Insulation is rated by its r value. Rockwool safe n sound r 59 7 sq ft unfaced stone wool batt insulation 15 25 in w x 47 in l. Good for adding insulation to existing finished areas irregularly shaped areas and around obstructions.

Insulation decreases the amount of heat entering from outside when it s hot and traps warmth inside when it s cold. Lay the batts between the joists being careful not to cover wires and leaving spaces around electrical recesses like down lights. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation. Item 305816 model rxss31525.

Use the insulation. Structural insulated panels sips foam board or liquid foam insulation core. Unfinished walls ceilings floors and roofs for new construction. Find your zone on the map and then use the chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces.

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. Before you ever get insulation anywhere near the attic though make sure that you get the air leakage sites sealed up.