Double sealing strip - no cold bridges
The insulation; the two sealing strips in the frame and a construction of trapdoor without wood prevent heat loss. The 2 sealing strips provide an extra tightness, which means, among other things, that the loft ladder have no cold bridges. It provides a good saving on the heating bill compared to traditional loft ladders. DOLLE clickFIX® 56 PRO is insulated with 50 mm expanded polystyrene (EPS) standard U-value: 0.64 W/m2*K. The low u-value is particularly remarkable, as all the products have been tested as a building component similar to doors and windows. Usually, u-value indications are given as a calculated center value for the trapdoor, which is misleading in connection with energy calculations. The loft ladder have been tested at the IFT Rosenheim Institute for both U-value and air tightness.
THE LOFT LADDER SERIES WITH PATENTED CLICKFIX® TECHNOLOGY
DOLLE clickFIX® is the market's most unique loft ladder series on the market. The patented clickFIX® technology provides fantastic insulation value and is designed for easy installation. It is designed so that the ladder and the trapdoor easily can be replaced with the clickFIX® system. Click mounting can be done without use of special tools. The loft ladder can be mounted by one person as the loft ladder's weighs about 25% less than traditional loft ladder.
ROBUST LOFT LADDER WITH GOOD STEP COMFORT.
The extra strong ladder has a pine stringer of 8.3 cm and 6.9 cm non-slip beech tread, which provides a good comfort. The 3-part ladder has 12 treads and a ladder width of 35.8 cm. The ladder is finished with grey plastic feet, to protect the floor covering.