Foil Board Insulation R Value

Thickness inches r value in i p imperial rsi r value in metric 0 5.

Foil board insulation r value.

At foilboard we create high quality foil insulation with various foilboard r value ratings. R value chart for enerfoil tm rigid foam faced insulation. Products with foil facing help the panels resist moisture vapor. The foil facing also makes it very easy to seal with good quality foil faced tapes.

Basically r values range from 1 5 to 7 and the higher the number is the more effective the insulation sheet is at increasing thermal efficiency and thereby insulating your home. An r value is a measure of an insulation product s resistance to thermal heat transfer. Smaller sizes are also available. The r value rating is essentially a gauge on how effective the insulation is at preventing heat conduction.

The r value is in essence the measurement of an insulation sheet s ability to resist heat flow. The actual amount of airspace adjacent to the material will have a profound impact on the r value the larger the space the higher the r value. Note from this chart that the ideal r value differs for each part of your home. It s a measure of how long it takes a heat absorbing product to absorb 100 of its potential and begin to transfer that heat out the other side of the product.

The reflective surface of foil insulation takes heat and reflects it back out denying its entry into your premises. R value is a term to describe how quickly heat will pass through or be absorbed by a product. Polyiso is typically used with a foil facing and it has an r value of 7 0 to 8 0 per inch of thickness. Johns manville ap foil faced polyiso foam sheathing boards are available in r values up to r 28 and offer a reflective foil facer on one side and a non reflective facer on the other.

Working with home insulation boards insulation panels typically come in 4x8 foot sheets. Most people are familiar with the term r value when discussing insulation properties. This material offers the highest r values about r 6 to 6 5. This testing to designate an r value only applies to conductive heat flow not radiant heat flow.

Conditioned per atsm c1289 test method astm c5181 2. Added r value is what the foilboard insulation panel combined with the adjacent still reflective airspaces adds to a particular system. Each sheet is created with different r value ratings. What is the r value or r rating of radiant barrier foil insulation.