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Manual Roof Domes

Our selection of manual opening roof domes provides an efficient, cost-effective way to bring natural daylight and fresh air into your building. Designed for ease of use, each manual flat roof dome in our range features a robust spindle mechanism, allowing adjustable ventilation levels to prevent heat buildup and condensation. Sourced from leading manufacturers like Coxdome, Velux and Brett Martin, these units are the professionalā€™s choice for reliability and thermal performance in domestic and commercial applications.

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Why Choose a Manual Opening Roof Dome?

While fixed domes provide light, a manually opening roof dome adds the critical dimension of airflow. This is particularly vital in kitchens, bathrooms, or workspaces where humidity and temperature regulation are essential. By utilising a simple manual winding mechanism, these units offer a “fit-and-forget” ventilation solution without the need for complex electrical wiring or the higher cost of motorised alternatives.

Engineered for Durability and Security

At LB Supplies, we understand that a rooflight is a critical component of the building envelope. Our manual flat roof dome range is engineered to meet the highest UK standards:

  • Operation: Most units are operated via a telescopic winding pole (sold separately), which engages with a brass or steel spindle. This allows for an opening of approximately 300mm, providing ample “stack effect” ventilation.
  • Glazing Standards: Available in double, triple, or quadruple skin polycarbonate. Triple skin options are highly recommended to meet the current Part L Building Regulations for thermal insulation.
  • Weatherproofing: Each dome features an integrated gasket system to ensure a completely airtight seal when closed, preventing draughts and water ingress during heavy UK weather cycles.

Technical Specifications & Customisation

Choosing the right manual opening roof dome depends on your specific project requirements:

  1. Skin Type: Choose Clear for high light transmission or Opal for diffused light and privacy (ideal for schools or overlooked residential extensions).
  2. Upstand Options: Units can be supplied with PVC upstands (typically 150mm or 300mm) designed for seamless integration with felt, EPDM, or GRP roofing membranes.
  3. Safety: Our polycarbonate domes are “Non-Fragile” rated, providing essential safety for maintenance personnel working on the roof.

Expert Support for Your Project

With decades of experience in the glazing industry, LB Supplies is more than just a supplier. We provide the technical backup required to ensure your installation is compliant and durable. Whether you are replacing an aged unit or specifying for a new build, our manual opening roof domes offer the perfect balance of aesthetic appeal and functional performance.

Contact our technical sales team today for advice on sizing, U-values, and compatibility for your next flat roof project.