Roof Or Ceiling Insulation

Keeping you cooler in summer and warmer in winter throughout the year.

Roof or ceiling insulation.

Insulation level are specified by r value. The higher the r value the better the thermal performance of the insulation. Typical recommendations for exterior walls are r 13 to r 23 while r 30 r 38 and r 49 are common for ceilings and attic spaces. Unvented hot roof design cathedral ceilings are also an option.

R value is a measure of insulation s ability to resist heat traveling through it. It prevents heat from passing through. Looking upward through the open ceiling if the exterior wall and roof deck assemblies both contain spray foam then a continuous insulation and airtight layer is established from the base of the walls to the peak of the roof. If you don t have an attic however there is.

A very energy efficient enclosure results. For example cathedral ceilings built with 2x12 rafters have space for standard 10 inch batts r 30 and ventilation. The hot roof design allows more insulation to be installed in the roof cavity as the need for a vent space is eliminated. See the department of energy s doe ranges for recommended levels of insulation below.

Cellulose insulation is calculated based on the depth of the blown in insulation. Fiberglass insulation is calculated based on the number of batts or rolls you need. Fiberglass insulation in rolls or batts can be easily added by the homeowner. The table below shows what levels of insulation are cost effective for different climates and locations in the home.

Blown in insulation requires the least amount of work but requires special tools and equipment. How to put insulation in a ceiling before drywall. Earthwool roof insulation is available in a wide range of r values allowing you to achieve the perfect levels of comfort. Available from bunnings warehouse across australia.

This rule applies to all ceiling insulation types. A vaulted ceiling does not necessarily require roof insulation because there is an air cavity separating the interior of the home or conditioned space from the roofline. Rather install a thinner insulation roof batt with a lower r value or consider installing hi density thermal and acoustic batts in the areas where space is an issue. Use our calculator to work out how many packs you will need for your ceiling and discover the range of products we produce.

Compressing roof insulation batts is counter productive and will actually reduce the performance of the roof insulation materials. Image courtesy of d7 spray foam insulation houston tx.