The R-value (a measurement of the thermal efficiency of the door) for our ShowCase is 10.25. The R-value for our Decade II and our insulated Classic is 5.0. When considering thermal efficiency, also consider the weathersealing around the perimeter of the door and the amount of air infiltration between the door sections. The R-value is important, but it's only one part of your door's weathersealing system.

Other blocks using inserts or hollow core blocks with poured insulation range between 5 and 6 for a 9 and 10" block.

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.

Although we have not had our doors specifically tested, there are published ratings for solid wood, floating panel doors. XXXXXX

R-Values of insulating materials are measured in laboratories and are designated a nominal R-Value per inch. In the wall or ceiling of a building most factory-made insulation materials suffer a reduction in performance due to air leakage and infiltration. The insulating value of many building components may be as low as 50% of the nominal R-Value of the insulation they contain.

In the wall or ceiling of a building, most factory made insulation materials suffer a reduction in performance due to air leakage and infiltration. The insulating value of many building components may be as low as 50% of the nominal R-Value of the insulation they contain. But, the insulation of a wall containing BioBased will perform closely to the laboratory tested R-Value of the material and seal the wall cavity from air infiltration as well.

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.

No. Our products do not operate in this manner. Minimal benefit is netted when the product is doubled.

This is a measurement of heat resistance (the higher the number, the better). R value = the number 1 divided by the U value.

Insulated glass consists of two pieces of glass sealed to a spacer. This creates an insulated air space between the two pieces of glass, resulting in better thermal performance. Insulated glass also reduces condensation while keeping the heat in during the winter and the heat out during the summer.

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.