Climate classes
Doors to withstand challenging microclimates
Ambient conditions can put considerable stress on interior, and front or exterior doors. For example, doors made from wood can warp or bend when hygrothermal conditions on one side differ from the other. Therefore, various standards and classifications address the ability to withstand these imbalances, and doors are divided into three climate classes.
Expertly designed and built doors can overcome these hurdles: neuform doors comprise carefully selected materials and specially developed manufacturing methods. They are of exceptional quality, with the ability to keep “in shape” despite differences in temperature and humidity. Particularly in recently constructed buildings, residual humidity can linger, temporarily changing ambient conditions, and leading to extreme deformation. Normal conditions are usually only achieved after two cold periods where indoor heating was in use. Our experts have developed innovative and reliable solutions to these challenges.
PLANNING AIDS
RAL - GZ 426/1 - Climate class
Doors experience hygrothermal stress when the door leaf is exposed to divergent conditions on the two sides, or to an exceptionally dry or humid climate on both sides. This occurs, for example, with entrance doors to apartments or houses.
Additional quality assurance through an independent organisation.
DIN EN 1121 - Behaviour between two different climates – Test method
DIN EN 12219 - Requirements and classification
Comparison of test climates for interior doors according to DIN EN 1121 and RAL-GZ 426 lt. Table:
| RAL | DIN EN | Page 1: Ambient temperature,relative humidity | Page 2 Ambient temperature, relative humidity | Door applications |
|---|---|---|---|---|
| I | a | 23 °C, 30 % | 18 °C, 50% | Interior |
| II | b | 23 °C, 30 % | 13 °C, 65% | Entrance (heated corridor), sound insulation, public/commercial |
| III | c | 23 °C, 30 % | 3 °C, 85% | Entrance (heated corridor), extra high, sound insulation, public/commercial |
CLIMATE CLASS MODELS
Climate class II models
The most common models are listed below. Other door attributes, e.g. suitability for high-humidity and wet environments, are available upon request.
| neuform Door model | RAL GZ 426/1 Class | Use | Sound insulation class |
|---|---|---|---|
| HT40 - 40mm | II | T0 | SSK 0, 1, 2 |
| HT50 - 50mm | II | T0, RS, T30 | SSK 0, 1, 2, 3 |
| HT65 - 65mm | II | T0 | SSK 0, 1, 2, 3 |
| HT70 - 70mm | II | T0, RS, T30 | SSK 0, 1, 2 |
| HT70 - 70mm | II | T90 | SSK 0, 1, 2, 3 |
Climate class III models
Optionally available models are listed below. Other door attributes, e.g. suitability for high-humidity and wet environments, are available upon request.
| neuform Door model | RAL GZ 426/1 Class | Use | Sound insulation class |
|---|---|---|---|
| HT40 - 40mm | III | T0 | SSK 1, 2 |
| HT50 - 50mm | III | T0, RS, T30 | SSK 0, 1, 2, 3 |
| HT70 - 70mm | III | T0, RS, T30 | SSK 0, 1, 2, 3, 4 |
| HT70 - 70mm | III | T90 | SSK 0, 1 |