High R Value Roof Insulation

A high r value system is commonly referred to as a double layer system.

High r value roof insulation.

See the department of energy s doe ranges for recommended levels of insulation below. Achieving greater r values in exterior walls in exterior walls add insulating sheathing to achieve a greater r value in your wall system. Foamular high r cw plus insulation combines outstanding moisture resistance with excellent thermal performance. The table below shows what levels of insulation are cost effective for different climates and locations in the home.

R panel meets the international building code requirements for a foamed plastic roof insulation. R panel is manufactured with a closed cell polyisocyanurate foam core bonded to fiberglass reinforced facers and designed for use over metal nailable and non nailable roof decks with a variety of membrane systems. Depending on where you live and the part of your home you re insulating walls crawlspace attic etc you ll need a different r value. Johns manville r panel rigid roof insulation board offers r values of up to r 23 6 providing high thermal efficiency.

High r cw plus insulation is a rigid closed cell xps board. The main advantage of high r cw plus insulation over other xps boards is its higher r value per inch. The material is costly and fragile factors that have limited its use in residential construction. 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. Aerogel has an r value of about r 10 per inch is 99 air and insulates up to 37 times higher r value than fiberglass. Two layers of insulation are installed and held up with metal bands to achieve a high r value. Develops markets and installs innovative wall ceiling insulation products that meet the performance environmental and budgetary needs of building owners building managers architects and builders.

The higher the r value the better the thermal performance of the insulation.