Before launching a new loft ladder, we always test our loft ladder's thoroughly to ensure that all our loft ladders meet legal requirements, industry standards and guidelines as well as our own high-quality demands. Our loft ladders are subjected to many different types of tests including strength, insulation capacity - U-value and airtightness.
We test the loft ladders strength, repetition testing on closing mechanisms and hinges as well as tensile testing according to EN 14975. Our loft ladders are approved up to 150 kg, but we test up to 265 kg.
Our loft ladders have the market leading U-values and are tested as a building component just like doors and windows. The lower u-value, the lower heat loss and with DOLLE you can get the certificate on our tested U-values.
The unique sealing system in DOLLE's loft ladders is important as it protects against draft and heat loss. We have developed a sealing system that ensures the gap between the trapdoor and the frame is tight preventing draft and heat loss. Our loft ladders have been tested at Danish Technological Institute or IFT Rosenheim according to the highest airtight class 4 - EN 12207 standard.
We also have a series of fire-resistant loft ladders - REI 45 have been tested according to the new European standard. REI stands for: R (resistance) carrying capacity during fire. E (integrity) ability to keep flames and gases out. I (insulation) ability to keep warmth out. The 45 minutes indicates for how long the loft ladder can withstand a fire. Hence the name DOLLE REI 45.
At DOLLE, we maintain a constant focus on safety and quality and we therefore place great demands not just on our own production, but also on the production of our suppliers. Our own production plants are subject to extensive quality management measures, in addition to which we have established effective quality processes and systems to ensure that our suppliers also meet our required standards. We therefore test all incoming deliveries in accordance with the European standards for spot checking, ISO 2859.
All raw materials and components are carefully selected to ensure they are in good order in terms of strength, function, safety and quality. Our products are always produced in line with applicable legislation, standards and codes of practice and are certified by all relevant authorities.
DOLLE A/S is ISO 9001 certified which assures clients that we meet the quality requirements specified by the ISO 9001 standard. In practical terms it means that an independent certification body controls and verifies that all of our production procedures are clearly documented and adhered to at all times.
At DOLLE we ensure our wood originates from certified plantations that are managed responsibly. This also ensures that our production complies with current laws and standards in relation to the environment. We recycle materials where possible, sort, press and dispose our waste in a responsible way.
Our purchasing policy dictates that we only buy wood-based raw materials from environmentally conscious, trustworthy and reliable suppliers. As far as possible, we endeavor to buy FSC® - certified products and we will, as a matter of course, refuse to buy wood that has been illegally logged or originates from countries in which basic civil rights are not respected. You can recognize our loft ladders when they are of timber from renewable FSC® certified forest. They will be marked with the FSC® logo or FCS® licence code. If they do not carry logo or licence code they are not of FSC® certified. DOLLE A/S focuses on protecting the environment throughout the entire process, from purchasing, production and distribution - through to the subsequent disposal of industrial waste.
Danish design and craftmanship are combined with traditional materials. DOLLE loft ladders are manufactured in Denmark under ISO certified systems, our timber is sourced primary from renewable FSC® certified forests for almost all loft ladders. We are constantly expanding our product range and are working on technical improvements and innovations: For example, DOLLE pioneered thermal insulation and developed windproof installation solutions for loft ladders. DOLLE since 1951.