Why Correct Spacing Matters In Fire Door Installation
Fire doors are only as effective as their installation. Even the smallest gap or misalignment can compromise a door’s ability to contain smoke and flames in an emergency. Traditional shimming methods (such as improvised timber offcuts) can achieve basic spacing, but they are not tested or verified as part of a fire door assembly. Using a fire door wedge, like Blue60 Timberex, provides a consistent method of setting the frame while ensuring the material used has been assessed within a tested system. This supports the fire door’s ability to perform as tested.
Timberex Wedges are designed to support correct installation for FD30 (30-minute) and FD60 (60-minute) fire doors when used in line with the doorset’s tested evidence. This gives fitters and building inspectors confidence that not only the spacing, but the material used to achieve it, meets the required fire performance and compliance standards.
What Are Blue60 Timberex Wedges?
Blue60 Timberex Wedges are manufactured from a non-combustible composite PVC and timber material. They are designed to provide accurate, stable spacing during fire door installation without compressing, burning or deforming when exposed to fire.
Each wedge is manufactured in a tapered profile, ranging from 2 mm to 15 mm, allowing installers to fine-tune frame position accurately and consistently across the opening. Their role is to maintain frame alignment and dimensional stability so the fire door performs as tested.
Key Benefits Of Using Blue60 Timberex Wedges
1. Reliable Fire Integrity
The primary benefit of Timberex Wedges lies in their fire-rated performance. Timberex Wedges have been tested as part of complete fire door assemblies under BS EN 1634-1, supporting FD30 and FD60 fire performance where installation follows the relevant test evidence.
Rather than relying on materials that may burn away or compress, Timberex Wedges remain in place during a fire, helping maintain the integrity of the doorset and the surrounding construction.
2. Consistent And Accurate Installation
Traditional timber shims can be used to align and space a frame during installation. However, not all materials used for packing have been tested as part of a fire door assembly. Blue60 Timberex Wedges Blue60 Timberex Wedges provide a consistent method of ensuring equal spacing across the frame while also being assessed within tested fire door systems. This helps ensure that the materials used during installation align with the tested evidence for the doorset, supporting compliant installation and inspection sign-off.
3. Ease And Speed On Site
Time pressures on site can lead to shortcuts, but Timberex Wedges make correct installation quicker, not slower. Installers simply hammer the wedges into position to achieve the correct spacing, with adjustment as required to achieve even gaps, including trimming where necessary.
4. Durability And Stability
Because Timberex Wedges are made from a non-combustible composite material, they will not compress, rot or degrade over time. This ensures the frame remains stable and the door continues to function correctly, even under heavy use.
5. Confidence In Compliance
Specifiers and contractors must be confident that every element in a fire door system contributes to the door’s rated performance. Blue60 Timberex Wedges have been tested with both single and timber frames, to verify compliance with BS 476-22 and EN 1634-1 standards.
This documented testing and certification mean that installers can demonstrate compliance with regulatory requirements, simplifying sign-off for building inspectors and fire officers.
Saving Time, Ensuring Safety
For contractors, one of the main advantages of Timberex Wedges is efficiency. While adjustments are still required during installation, the wedges allow frames to be set and aligned quickly and accurately, helping installers complete doorsets efficiently without compromising on quality.
For specifiers and building control officers, the benefit lies in confidence: knowing that every installed door has been supported with tested and certified components designed for the purpose.
The Blue60 Timberex Wedges provide a simple, high-performance solution for achieving precise frame spacing and maintaining fire integrity during fire door installation. By combining dimensional stability with non-combustible materials, these fire-rated packers ensure compliance, save time and offer peace of mind for both installers and building owners. Contact us today to learn more about Timberex Wedges and the complete Blue60 range of fire door installation products.




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