Timber frame lintels are specialised structural components designed for timber frame construction. They span openings in walls, supporting the load above windows and doors. These lintels are engineered to work seamlessly with timber frame systems.
Also, timber frame lintels deliver superb thermal performance, reducing cold bridging common in other materials. Their lightweight nature simplifies installation while maintaining robust load-bearing capabilities.
Timber Frame Lintels vs Steel Lintels: Which is Best?
The choice between timber frame lintels and steel lintels depends on several factors. However, steel lintels may be preferred for longer spans or higher load-bearing requirements. Think about the below before making your decision.
- Weight: Timber frame lintels are significantly lighter, making installation easier
- Thermal performance: Timber frame lintels offer better insulation, reducing thermal bridging
- Compatibility: They integrate seamlessly with timber frame structures which simplifies construction
- Customisation: Timber frame lintels can be easily cut and adjusted on-site
5 Top Pro Techniques on Installing Timber Frame Lintels
- Precise cutting: Trim timber frame lintels to exact length, ensuring 150mm bearing on each side of the opening
- Adding vapour barriers: Carefully wrap the lintel with the building's vapour barrier, maintaining the envelope's integrity
- Insulation stability: Pack insulation around the timber frame lintel to prevent thermal bridges
- Structural connection: Secure the lintel to adjacent studs using appropriate structural screws or nails
- Load distribution: Install noggins above the lintel to evenly distribute loads from floor joists or roof trusses
What is the Typical Lifespan of a Timber Frame Lintel?
The typical lifespan of a timber frame lintel, when properly installed, can exceed 50 years. Many last for the entire lifespan of the building they support. Factors influencing longevity include the following.
- Wood quality: High-grade, kiln-dried timber resists warping and decay better
- Treatment: Pressure-treated lintels with preservatives can last significantly longer
- Moisture exposure: Well-protected lintels in dry environments have extended lifespans
- Load bearing: Correctly sized lintels that aren't overstressed last longer
- Ventilation: Good air circulation around the lintel prevents moisture buildup
How Do Timber Frame Lintels Address Issues with Moisture and Rot?
Most are pressure-treated with preservatives which penetrate deep into the wood fibres. This treatment boosts resistance to decay and insect infestation. Many timber frame lintels also feature built-in damp-proof courses (DPC), made of polyethylene or polypropylene.
These act as barriers, preventing moisture from wicking up from the masonry below. The design of timber frame lintels often includes ventilation gaps, allowing any trapped moisture to escape. This feature helps maintain the wood's integrity.