The new generation RHT roof hatches feature an extremely strong and patented construction. Thanks to several modifications, the roof hatch is even more resistant against unexpected extreme loads, both during construction and in general use.

Proven insulation performance of the complete roof hatch

With the RHT roof hatch, the insulation value is calculated for the entire construction (Uw), not just the insulation material. This sets Gorter apart in the roof hatch market, where many suppliers only provide the PIR insulation value. The proven insulation performance of the complete hatch is Uw ≤ 0.276 W/(m²·K).

Features and benefits:

CE (ETA-15/0338) and TÜV NORD certified
Fully thermally broken curb and cover
Safe to operate with one hand
10-year warranty on the roof hatch
Optional electric control
Fast delivery
High-quality construction
Stainless steel Euro cylinder lock with indoor and outdoor operation
Burglar- and sound-proof

Option: electrical operation

Performance according to CE (ETA-15/0338):

Resistance to permanent loads (Eurocode EN 1993-1-1): 1050 kg/m²
Insulating (EN-ISO10077-2): Uw ≤ 0.276 W/(m².K)
Sound reduction (EN-ISO140-3): 26 dB
Watertightness (EN 12208): Class E 650
Resistance to wind load (EN 12210): Class E 3000
Resistance to snow loads (EN 1991-1-3): 3.97kN/m²
Impact hard body (EN 356): Class P5A
Impact soft body (EN 13049): Class 5
Air permeability (EN 12207): Class 3

Standaard sizes: from 700 x 1000 mm up to 1000 x 3000 mm

Learn more about the Gorter standard roof hatch.

TÜV NORD Certificate: roof hatch with ladder, scissor stairs and fixed stairs