Our in-house developed CRH roof hatch

STAL-West CRH Insulated Roof Hatch – Safe Access to Flat Roofs

The insulated roof access hatch developed by STAL-West Zrt. is a high-performance aluminum-structured unit, equipped with gas springs to support opening. It offers a durable, energy-efficient, and secure solution for gaining access to rooftop areas.

This roof hatch is the ideal choice for maintenance and inspection tasks, such as accessing rooftop mechanical systems, solar panels, or ventilation equipment. It is suitable for both insulated and non-insulated concrete, steel, and timber roofs, up to a maximum roof pitch of 15°.

Construction and Materials

• Material: powder-coated aluminum and plastic profile
• Coating: standard finish is powder-coated RAL 9010 (white); custom RAL colours are available upon request
• Upstand height: 280 mm
• Frame and lid: fully insulated and thermal bridge-free design
• Insulation: 80 mm rigid foam insulation in both frame and lid

The CRH roof hatch is built with advanced window and door industry technologies, utilizing multi-chamber plastic profiles and a continuous perimeter gasket system to ensure excellent airtightness and an ultra-low thermal transmittance factor.

Thermal and Acoustic Insulation

• Thermal transmittance (U-value): U = 0.25 W/m²·K (according to EN-ISO 10077-2)
• Thermal resistance (R-value): R = 3.71 m²·K/W
• Sound insulation: 25 dB (based on preliminary measurements)
• The roof hatch design reduces condensation risk and enhances overall energy efficiency.

Operation and Safety

• Gas springs: assist with easy opening and closing, lid locks automatically in the open position
• One-hand operation: low-effort, ergonomic handling
• Safety handrail: yellow, high-visibility grip for safe rooftop access
• Counterbalancing system: prevents unexpected closing of the lid
• Locking mechanism: stainless steel security cylinder lock operable from both inside and outside. The product can also be configured with custom locking systems, such as panic locks or electronic access options.
• Load capacity: up to 1000 kg/m² under continuous load

Installation and Maintenance

• Compatibility: suitable for insulated and non-insulated concrete, steel, and timber roofs
• Max. roof pitch: 15°
• Lightweight: low structural load, easy to handle
• Quick installation: the lid can be removed without tools by disengaging the gas springs, thanks to special hinge design

Our perfectly thermal bridge-free hinge system ensures outstanding insulation, and thanks to its innovative design, the lid can be detached from the frame at a 110° opening angle without any screws. This unparalleled freedom and user-friendliness make our product unique on the market. Experience the flexibility and premium quality offered by our patented hinge technology!

According to EN Standards

• Air permeability (EN 12207): under laboratory testing
• Wind resistance (EN 12210): under laboratory testing
• Water tightness (EN 12208): under laboratory testing

This product is protected under European Patent EP4251820. Any reproduction, imitation or unauthorised use is strictly prohibited.