Specifying Roof Hatches

Specifying the right roof hatch requires careful evaluation of its purpose, location, and operational needs. Architects must also consider factors such as insulation, locking mechanisms, and compliance with safety and building standards. Below is a step-by-step guide to help you select the ideal roof hatch for your project:

1. Purpose of Use: Define whether the hatch is for maintenance, emergency egress, or equipment transfer.
2. Location and Environmental Conditions: Assess wind exposure, snow loads, and ingress protection (IP67 for dust and water).
3. Size and Frequency of Use: Determine the required dimensions and whether the hatch will be used regularly or occasionally.
4. Access Requirements: Choose appropriate ladder options, such as fixed vertical, retractable, or companionway stairs, ensuring compliance with BS4211.
5. Safety Features: Include guardrails, wind restraints, and safety stays for operator protection.
6. Compliance with Standards: Ensure adherence to BS EN 1991, BS EN 1634-1, and Part K of the Building Regulations.
7. Aesthetic Considerations: Select powder-coated finishes to complement building aesthetics.

Types of Roof Hatches and Key Features

Roof hatches are available in various types to suit specific needs, from standard pedestrian access to larger openings for equipment or plant access. Options like fire-rated hatches ensure safety compliance, while sliding hatches are ideal for high-wind areas or space-constrained environments. For projects with sustainability goals, solar-powered or electrically operated hatches offer energy-efficient solutions. With material options like lightweight aluminium and heavy-duty galvanised steel, as well as insulation choices tailored for energy efficiency or fire resistance, roof hatches integrate seamlessly into diverse architectural designs.

Material Options

• Aluminium: Lightweight, corrosion-resistant, and versatile for most applications.
• Galvanised Steel: Heavy-duty and suitable for demanding environments, such as fire-rated or industrial projects.

Insulation and Thermal Performance

• PIR Insulation: Ideal for reducing energy loss, achieving U-values as low as 0.26 W/m²K.
• Mineral Wool Insulation: While slightly higher in U-value, this non-combustible insulation enhances fire-rated properties, making it ideal for fire-critical applications.

Key Product Features

1. Standard Roof Hatches: The most common option, designed for pedestrian rooftop access with standard sizes for seamless installation.
2. Fire-Rated Roof Hatches: Provide up to 240 minutes of fire resistance, ensuring compliance with safety-critical building codes.
3. Sliding Roof Hatches: Feature space-saving sliding lids, ideal for high-wind areas or restricted spaces.
4. Double Leaf Roof Hatches: Designed for larger openings, accommodating equipment and plant access.
5. Solar-Powered Roof Hatches: Eco-friendly solutions for projects focused on sustainability.
6. Retrofit Roof Hatches: Tailored to replace older hatches while retaining existing upstands.
7. Electrically Operated Roof Hatches: Automated models with actuators for frequent or remote operation.

Considerations When Specifying a Roof Hatch

Specifying a roof hatch involves evaluating key factors like purpose, location, and operational requirements. Architects must also address safety features, access methods, compliance with standards, and weathertightness to ensure the solution meets project-specific needs. The table below provides a detailed framework for selecting the ideal roof hatch.

Roof Hatch Standards For UK and EU

Architects rely on roof hatches that meet rigorous UK and EU standards to ensure safety and performance. Compliance with these standards ensures hatches are reliable, durable, and suitable for diverse applications:

• Fire Resistance: BS EN 1634-1 ensures up to 240 minutes of fire-rated performance.
• Structural Integrity: BS EN 1991 covers snow and wind loading for rooftop installations.
• Ingress Protection: IP67-rated hatches guard against water and dust ingress.
• Access Safety: BS4211 outlines ladder and access requirements, while Part K specifies safe rooftop entry designs.
• Quality Management: ISO 9001 certification ensures consistent manufacturing quality.
• The system should be operated easily and safely with one hand, in accordance with the requirements outlined within the Manual Handling Regulations.

Roof Hatch Safety and Access Options

Enhanced Safety Features

• SureGuard Hatch Railings: Provides fall protection with self-closing gates.
• Handholds: Aids in safe entry and exit for users.
• Ladder Up Posts: Ensures secure vertical access.

Enhanced Access Options

• Standard Vertical Ladders: Simple and cost-effective solutions.
• Companionway or Ship Ladders: Stable access with a gentler incline.
• ZIP Retractable Ladders: Compact options for space-restricted areas.

Surespan’s Product Range Comparison Table

Explore Surespan’s versatile range of roof hatches, comparing materials, insulation values, key features, and operational options to find the perfect solution for your project.

How To Install A Roof Hatch

Installing a roof hatch requires careful preparation and adherence to the installation guidelines to ensure safety, durability, and compliance with building standards. Here’s a simplified step-by-step guide for installing Surespan roof hatches:

1. Preparation:
   • Verify the hatch matches the location and opening dimensions by reviewing the provided documentation and measuring the site.
   • Remove all packaging and ensure the roof area is clean, dry, and dust-free.
2. Positioning:
   • Place the hatch over the roof opening, aligning it for correct lid operation (e.g., hinged side opposite the ladder).
   • Mark the fixing points through the flange holes.
3. Securing the Hatch:
   • Drill the marked fixing points and apply a weatherproof sealant around the roof opening perimeter.
   • Reposition the hatch, ensuring alignment, and loosely fix it using suitable fasteners for the roof material. Tighten securely once properly aligned.
4. Weatherproofing:
   • Extend the roof’s weatherproof membrane over the fixing flange and secure it under the hatch’s weathering lip.
   • Add additional sealant as needed for enhanced weathertightness.
5. Final Fixings:
   • Install and secure gas spring or actuator brackets as per the hatch type.
   • Test the hatch operation to confirm smooth functionality.
6. Electrical Connection (for Electric Hatches):
   • Connect the control box to a permanent power supply as per wiring diagrams.
   • Plug the actuator motor cable into the control box and test hatch operation using the provided remote or control panel.

For a visual guide to installation, watch the step-by-step video below:

Surespan’s Commitment to Excellence

Surespan roof hatches are meticulously designed to exceed stringent UK and EU regulations, providing innovative, safe, and efficient solutions for modern construction. Architects can trust Surespan for bespoke designs, technical expertise, and industry-leading support. Explore our Resource Centre for specifications, DWGs, and installation guides tailored to your project.