Loft Stairs – Insulated & Air Tight

£240.00£363.00 inc. vat (RRP)

The Passive House Systems Timber Folding Loft Stairs – A superior stairs complete with spring counterbalance mechanism for delightfully easy operation. A real winner when it comes to the prevention of heat loss with it’s 80mm or 133mm insulation and air impermeable seals.

  • Top quality Pine Folding Loft Stairs, with deep, non-slip treads and plastic feet for extra stability.
  • Supplied complete with a new white faced hatch, lining and ladder for quick and easy installation.
  • No storage space needed in the loft as stairs stores completely on hatch.
  • Effortless counterbalance operation.
  • Supplied with an 2-point lock and long reach operating pole for ease of use.
  • Hidden trapdoor hinges are an added feature.
  • Quality accessories available.
  • Fire rated hatches are also available.
  • Includes an air tightness kit between loft door frame and ceiling.

Technical Details

  Polar Top Polar Extreme
Insulation Thickness 133mm 80mm
Certification DIN EN 14975:2007
Tested U-value STANDARD 0.40W / m2K 0.59W / m2K

Tested U-value with ISO – top


0,32W / m2K


0,37W / m2K


Air tightness Level class 4 (EN 1026), i.e. Q100 < 0.1m³/hr.m2
Locking Mechanism 2-point with seal compression.
Aesthetics A white lid finish
Construction Type Particularly strong step, 27mm with dovetail joints.
Hand Rail Safety As Standard when >540mm width
Load bearing Capacity 150kg
Dimensions 119xlong x 590 wide x 275 max. ceiling height
Optional Extras – ISO Top lid with 80mm extra insulation (50cm high),
– loft guard rail.


Polar Extreme Loft Stairs 1190mmX590mm 2800mm 1 Stock item
Polar Top Loft Stairs 1190mmX590mm 2800mm 3 Stock item
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