Home > Companies > Premier Loft Ladders Ltd > Designo wooden loft ladder

The Designo wooden loft ladder perfectly balances aesthetics with strength and quality. Available as a certified Passivhaus loft ladder (by the Passivhaus Institute).

The three-part folding heavy-duty wooden loft ladder is contained within, and attached to, an insulated wooden hatch box. It offers excellent energy efficiency (0.60 W/m²K) thanks to a highly insulated trapdoor with six-point locking mechanism providing a class 4 certified airtight seal.

It is also fitted with the patented WDL sealing and insulation tape, which provides a perfect seal between the hatch box and building and saves time during installation.

Features and benefits:

  • Wooden folding loft ladder.
  • High strength load rating (180kg per tread).
  • Available with Passivhaus (Passive House) certification.
  • Highly insulated trap door / hatch box (U-value: 0.60 W/m²K).
  • Class 4 certified airtight seal.
  • Available made-to-measure to suit specific project requirements.
  • Includes handrail and anti-slip treads to provide comfort and safety.
  • Supplied with a two-year full warranty and a ten-year parts warranty.
  • Low maintenance with excellent durability.
  • Supplied ready to install.

Related literature

The following content references this product:

Standard product features

Load bearing capacity (per tread):

180 kg.

Tread size:

330 x 80 mm.

Hatchbox/ trapdoor:

  • Material: Timber.
  • Hatchbox and trapdoor constructed from 18 mm thick laminated wood.
  • U-value: 0.60 W/m²K.

NBS Specification

NBS Create logo
This product is associated with the following NBS Create clause:
45-30-75/405 Timber loft ladders

NBS Specification

NBS Buliding logo
This product is associated with the following NBS clauses:

Product specification

An important note about specifying



Premier Loft Ladders Ltd


+44 (0)345 9000195

Product reference

Designo Wooden Loft Ladder

Floor-to-ceiling height

Special order - 2300–3300 mm; insert requirement.

Hatchbox/ trapdoor

 - Size (l x w):
[1200 x 600 mm]
[1200 x 700 mm]
[1300 x 700 mm]
[1400 x 700 mm]
[Special order]
Insert requirement, available 1200–1600 x 550–800 mm.
 - Depth:
[190 mm]
[Special order]
Insert requirement, available 190–710 mm.

Passive House Certified

[Not required]
Minimum hatchbox depth of 290 mm.


[Additional handrail]
Right-hand side only.
[Secondary upper cover]
Combined U-value 0.29 W/m²K. Requires minimum depth of 670 mm.
[Three side upper level guard rail]

Manufacturer details

2 Dawson Drive,
Trimley St Mary,
Suffolk, IP11 0YW
Tel +44 (0)345 9000195
NBS Plus
NBS National BIM Library