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Wayne Dalton's Partnership with DASMA
Wayne Dalton has joined the Door & Access Systems Manufacturers Association (DASMA) Thermal Performance Verification (TPV) Program.
The TPV Program is a voluntary program that uses third-party testing to evaluate and certify the thermal transmittance (U-factor) of select sectional doors. As a participant, select residential and commercial doors that meet the TPV Program's rigorous standards are tested and certified for legitimate thermal performance U-factor ratings.
The TPV Program is a significant step forward for the residential and commercial door industry. By providing a more accurate and reliable way to measure thermal performance, the program helps consumers make informed decisions about their door purchases. Wayne Dalton is proud to be a part of this important program and to help lead the way in manufacturing.
How to Identify Thermal Performance Verification
When choosing a sectional door, look for the Thermal Performance Verification (TPV) Program badge or icon. This badge is only awarded to doors that have been third-party tested and verified to meet the program's strict thermal performance standards. Only doors that are classified as "highly thermally efficient" will have a U-factor rating.
U-Factor Ratings are Available on the Following Wayne Dalton Models:
A voluntary program to certify and label the thermal transmittance (“U-factor”) of select door products via third-party testing.
Residential and commercial sectional doors with specific design criteria.
To be considered “high thermally efficient,” the door consists of an insulated core and has a meeting rail design that incorporates a thermal break. Glazing cutouts of 16% or less of the total door surface area.
U-factor label can remain with limited glazing; extensive glazing needs separate testing.
When small amounts of glazing are added, the solid door label may still be used. When a lot of glazing is incorporated to the door, the solid door label may not be used.
More than 16% glazing area voids U-factor label. If a door with that much glazing is to be listed, a separate test and listing are required.
U-factor measures thermal transmittance; lower U-factor means better insulation. U-factor is a tested measurement of the thermal transmittance of an installed door assembly.
U-Factor is a more accurate way to rate thermal performance than the currently used R-Value. U-factor measures installed door performance, R-value estimates individual section resistance.
The biggest difference between R-value and U-factor ratings is how they are measured. R-value ratings are calculated mathematically by measuring a single section of a garage or commercial sectional door. U-factor ratings, on the other hand, are calculated by measuring the whole door system installed (the entire door, siding, framing, wall, materials used, etc.). This gives a more accurate thermal transference rating and as such, a more accurate picture of the thermal insulation efficiency.
ANSI/DASMA 105 - Test Method for Thermal Transmittance and Air Infiltration of Garage Doors and Rolling Doors.
It is difficult to accurately measure the R-value of a section of a panel that is not completely flat (i.e., panels that have grooves or indentations cannot be accurately tested with R-value). U-factor gives a more accurate rating of the entire door, while R-value only measures a section of a single panel.
U-factor measures the rate at which heat is transferred through a material, such as a garage door. A lower U-factor indicates better insulation, meaning the sectional door will resist heat flow more effectively.
U-value is used differently across the building and manufacturing industry, in some instances being introduced as the reciprocal of R-value. Only U-factor ratings are used in the building codes for doors and windows. Therefore, program participants will remove all U-value listings. This will remove any confusion regarding the meaning of U-value for the residential garage and commercial door industry and further emphasize the integrity of U-factor certified ratings.
