R-Value is a rating of the material resistance to thermal penetration. The higher the number, the better the protection value. Many circumstances change the R-Value rating.

R Value - the measurement of 'insulating ability' of the material. The higher the R Factor number the greater the insulation value. U Value - the measurement of 'heat loss' through the material. The lower the U Value the less heat is escaping.

The R-value is the measure of the resistance of a material to heat flow (or heat gain) by conduction only. The k-value is the measure of thermal conductivity; it measures the rate of heat transfer by conduction through a material from face to face. ASTEC's thermal conductivity (k-value) is very low (0.00345 W/m ?K or 0.00199 Btu/h ft ?F). A very low k-value indicates a good conductive insulator.

R-value is an assigned number derived from a specific testing procedure to determine a materials (or building assemblage) "resistance to conductive heat transfer". The higher the R-value, the more resistant a material (or building assemblage) is to conductive heat transfer.

Heritage has a standard R-20 wall insulation value. Heritage standard attic value is R-40. You may choose to Super Insulate your new home by increasing the walls to R-25 and the attic to R-50.

R-value is derived from a controlled laboratory test of insulation’s resistance to conductive heat flow. BioBased 501 has an R-value of 3.83/inch.

GreenBean has a few different foam products of different densities that we use on different project types. We do not believe that there is only product solution for every project. Our main open-cell foam product has an R-Value of 5.0 per inch & our main closed cell product has an R-value of 6.8 per inch. Spray foam is the only insulation product that offers a true R-value because it is the only product that creates an air seal. Don't get caught up in the Myth of R-values.

The "R" factor is approx. 11.6 because the walls are 13/4 inches thick, filled with rigid insulation by Celotex and a vapor barrier on each side to keep the cold air in and the hot air out.

R-value is a measure of the resistance to heat transfer. R-value does a good job of measuring the effectiveness of mass insulation but has no meaning in terms of the reflective protection against radiant heat.

When first installed, spray polyurethane foam's R-value is about 10 for a one-inch thickness. Over time, the R-value drops to about 7.0 (per inch) and stabilizes at that value. The time it takes to reach an R-value of 7.0 depends on a variety of factors, including total foam thickness. We report a six-month aged R-value. Many industry studies indicate that a one-inch thick sample of foam will stabilize after six months and maintain that approximate R-value for decades.

Grancrete does not provide high numbers in respect to being an insulator. Grancrete serves as a sealant to keep water and humidity out all while protecting the underlying insulation from physical damage.

That's a good question, but unfortunately the answer is not so simple, Window thermal performance is measured as a U-Value which Is the reciprocal of the R-Value ( R-Value = 1/U-Value. For example. R 2 = U .50, or 1/.50 = 2) A bit of background: the R-Value measures the resistance to heat loss or gain, while the U-Value measures the transmittance of heat through a material. The higher the number in R-Value the better the resistance, so the better the insulating value.

No. Products with R-values reduce rates of "conductive" heat transfer and are tested for this characteristic. Radiant Barriers provide benefit by dramatically reducing "radiant" heat transfer which is just as quantifiable but not related to R-value type performance.

Tile roofs are good insulators. The combined effect of the roof tiles, decking and the air space between the tiles allows for better air circulation and thereby reduces direct heat transfer. This results in lower air conditioning costs in the summer and decreases the formation of ice dams in the winter. BACK TO TOP

IB Panels are a wood product, which still need fire retardant (dry-wall). The wall is solid, with no oxygen, so the foam will not feed the fire.