Roof Single Leaf - Residential (RSL-R)

Current legislation regarding "roof lights" prohibits plastic linings in protected stairways. However, our RSL-R smoke vents open in the event of a fire, so the material is no longer in position during an emergency. Local building control interpretations may vary, and if plastic is a concern, we offer alternative options made from aluminium and glass.

To increase the aerodynamic free area of our RSL-R smoke vents, we can install a custom wind deflector to meet your specific requirements.

The polycarbonate used in Sertus' domes is virtually unbreakable and shatterproof, unlike acrylic. Our polycarbonate AOVs undergo rigorous testing, including the ACR(M) Red Book specification and the EN1873:2005 large soft body test, both simulating a 1200J impact (the equivalent of a person falling onto the AOV). While they are non-fragile when tested, these AOVs are not considered "man-safe" and should not be deliberately trafficked. Over time, polycarbonate may degrade depending on site conditions, so mechanical barriers are recommended for a permanent solution. 

We use a double skin design as standard to ensure optimal thermal performance, which aligns with legislative requirements. 

Yes, the RSL-R is BRoof (T4) compliant.

A 2-hour fire rating is only required for dampers under EN12101-8 to provide compartmentation. Our natural smoke vents, like the RSL-R, are designed to let smoke out and typically comply with the B300 standard from EN12101-2:2003 Annex G, meaning a 2-hour fire rating is not necessary.

If the AOV is installed in a highly trafficked area, we recommend adding edge protection for safety. For the RSL-R, its 160-degree opening angle should be considered, and fall arrest grids might be a better solution in such cases. 

Yes, the opening angle can be limited using our Motor Spare Actuator Limiter. However, limiting the opening to less than 140 degrees would not comply with BS EN12101-2 standards.

Using adhesives is not generally recommended, as they may damage the PVC or polycarbonate materials.

The top of the base upstand of the roof AOV must be at least 300mm above the finished roof surface.

The RSL-R is generally maintenance-free, except for occasional cleaning with warm soapy water. Any repairs can typically be done from the inside.

Permanent or concertina ladders should be avoided with the RSL-R, as they can restrict its aerodynamic performance.

In areas with high wind loads, we recommend using the RLB-R instead of the RSL-R.

Yes, the PVC upstand is insulated due to the material's low conductivity, comparable to thermally broken products.

By default, the actuator is offset to the left side, but it can be offset to the right side upon request while maintaining full compliance.

The RSL-R can be installed on roofs with a pitch of up to 20 degrees.

The RSL-R differs from the RSL in that it is not A1 Fire Rated, does not offer a glass lid option, and has a higher U-Value. While the RSL-R is a robust smoke vent solution, the RSL offers additional features such as Rockwool insulation and CWCT Impact Resistance to Class 2, making it more suitable for projects requiring enhanced fire resistance and thermal performance. 

We do not recommend installing permanent ladders on our RSL-R, RLB-R, or other smoke vent models, as they may impact the aerodynamic and free areas, potentially affecting performance.

 Yes, access from the roof is required for some maintenance tasks, such as replacing actuators. This ensures the process can be completed efficiently and safely. For most servicing, it is easier if the unit is opened first from the roof.

Maintenance for components like smoke vent systems is usually done inside, as part of the complete smoke vent system, which includes control panels and call points. Access to the components from the roof may be necessary for specific tasks.

Yes, if the actuator needs to be replaced, it can typically be done externally from the roof, making the process straightforward without needing to enter the building.