Fiberglass Roof Insulation R Value

The common denominator among varieties of insulation is the r value.

Fiberglass roof insulation r value.

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. I calculate insulation resistance to heat loss or r percentage improvement always as relative to the original number. R3 r18 r21 total roof r value. Insulation project calculator how to install naima r value certification product training videos colab learning video library for pros distributor locator why owens corning insulation propink vs.

In comparison an inch of blown fiberglass insulation has an r value of 3 1 3 4 and. National roofing contractors association. The higher the r value the better the thermal performance of the insulation. Calculate percent improvement in r value.

Mineral rock or slag wool. Type 703 and 705 are available with factory applied frk or poly encapsulated asj max facings. R value is a measure of insulation s ability to resist heat traveling through it. Rigid fibrous or fiber insulation.

Ducts in unconditioned spaces. Spray foam pink fiberglas vs. The table below shows what levels of insulation are cost effective for different climates and. Built up roof membrane gravel surfaced membrane and gravel only 0 33.

The maximum thermal performance or r value of insulation is very dependent on proper installation. 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. R value is a measurement of thermal resistance and measures the ability of heat to transfer from one side of an object to another. Insulation level are specified by r value.

Recommended home insulation r values. R value of roofing materials and building insulation. As a benchmark one inch of solid wood has an r value of 1. These r values are a sum meaning this should be the total r value once you add up the entire depth of insulation.

Owens corning type 703 type 705 700 series fiberglas insulation boards are made of inorganic glass fibers with a thermosetting resin binder and formed into semi rigid or rigid rectangular boards. R value per inch ft f hr btu rsi per millimeter k m w r value for typical installed thickness not per inch source. 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. Johns manville r panel rigid roof insulation board offers r values of up to r 23 6 providing high thermal efficiency.