Timloc Felt Lap Vent Pack of 10
Effective Loft Ventilation Solution for Roof Condensation Problems
The Timloc Felt Lap Vent Pack of 10 provides a simple yet highly effective way to improve airflow within existing roof spaces. By opening the lap joints in roofing felt or roof membranes, these vents encourage fresh air to circulate through the loft space and help reduce condensation and moisture build-up.
As a result, the Timloc Felt Lap Vent protects roof timbers, insulation and roofing materials from moisture-related damage. Furthermore, you can fit the vents into existing roofs, making them an excellent choice for lofts where additional insulation has increased the risk of condensation.
Whether you work as a roofing contractor, builder or homeowner, these easy-to-fit lap vents offer a cost-effective way to improve roof space ventilation without making major changes to the roof structure.
Why Choose Timloc Felt Lap Vents?
Condensation within roof voids often causes mould growth, damp patches and timber deterioration. Therefore, every roof space needs adequate ventilation. Timloc developed the Felt Lap Vent to improve existing airflow by opening felt laps and creating a pathway for trapped moisture to escape.
Moreover, you can complete installation quickly and easily. Simply slot each vent between the roofing felt laps and secure it with the two integrated spring clips. Consequently, you can improve roof ventilation without specialist tools or extensive roofing work.
In addition, the discreet low-profile design keeps the vents hidden within the roof structure while maintaining excellent ventilation performance. Therefore, both professional roofers and DIY users choose Timloc Felt Lap Vents for loft ventilation upgrades.
Key Features & Benefits
- Helps combat condensation in cold roof spaces
- Improves loft ventilation by separating roofing felt laps
- Suits refurbishment and existing roof space projects
- Allows retrospective installation after loft insulation upgrades
- Delivers 3000mm² additional free airflow per vent
- Fits rafter spacings from 400mm to 600mm centres
- Offers quick and straightforward installation
- Uses two integrated spring clips for secure fixing
- Features a discreet low-profile design
- Uses durable recycled polypropylene construction
- Includes 10 vents per pack
- Meets BS EN 9001 and BS EN 14001 standards
Ideal Applications
The Timloc Lap Vent supports a wide range of roofing projects that require additional roof space ventilation.
Perfect for:
- Existing loft spaces
- Roof refurbishment projects
- Cold roof constructions
- Condensation control measures
- Loft insulation upgrades
- Domestic roofing projects
- Residential property maintenance
- Professional roofing installations
As a result, homeowners and contractors can improve airflow and reduce moisture-related roofing problems with minimal effort.
Technical Specification
- Product Code: 5560
- Height: 19mm
- Width: 280mm
- Length: 205mm
- Material: Injection Moulded Recycled Polypropylene
- Colour: Off White
- Ventilation Area: 3000mm² additional free vent area per vent
- Suitable Rafter Spacing: 400mm – 600mm Centres
- Pack Quantity: 10 Vents
Installation Advice
For standard roof ventilation improvements, fit one lap vent into every alternate rafter space at low level on both sides of the roof. However, if you need additional airflow, install extra vents higher up the roof or within every rafter space.
Additionally, use lap vents as part of a complete roof ventilation system rather than as a replacement for eaves or ridge ventilation. Therefore, combine them with existing ventilation products to achieve the best results.
Trusted Timloc Quality
Timloc Building Products manufactures high-quality roofing and ventilation products for the UK construction industry. Consequently, roofing professionals continue to specify the Timloc Felt Lap Vent as a trusted solution for improving loft ventilation and reducing condensation in existing roof spaces.
If you need a simple, reliable and cost-effective way to increase roof ventilation and control condensation, the Timloc Felt Lap Vent Pack of 10 delivers an excellent solution.









