This Passive LWT highly efficient loft ladder is often used within energy-efficient premises to help achive Passive House standards. It has an excellent level of insulation to significantly reduce heat loss.
The LWT Passive House loft ladder is a technically complex design specifically developed for the demands of such energy-efficient construction standards. It is installed with a kit which connects the ladder to the ceiling to guarantee a perfect seal and insulation without thermal bridges.It comes with Passive House certification.
Minimum ceiling height requirements for 280cm:
- 234cm for a 3 section loft ladder
Minimum ceiling height requirements for 305cm:
- 242cm for a 3 section loft ladder
With its light hatch weight and method of 'click fixing', it makes installation very simple. There is also a short distance between the top tread and attic floor.
Its special 8cm thick hatch is filled with polystyrene insulation to provide an excellent barrier and to reduce heat loss.
For perfect tightness the ladder has a triple system of seals to guarantee this. Stile ends are also included along with a white hatch, three seals, a handrail and non-slip treads set flush with ladder strings.
Weighing 160kg with a heat transmission co-efficient U-Value = 0.51 W.m2k, insulation thickness 7.4cm and the hatch has a thickness of 8cm.
Achieves Class 4 to EN12207 and passed to Standard EN14975.
Segments - 3
Tread length - 30cm (size 55cm x 100cm only) 34cm for all other sizes