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At a Glance: Key Applications
Use Window Packers for: Quick and reliable packing around bolts, anchors and fixings—ideal for glazing frames, façade panels and external cladding.
Window Packers: A Technical Overview
Window Packers provide a fast, accurate solution for levelling, spacing and aligning building elements during installation. Their practical horseshoe shape allows easy slide-in around bolts and screws, saving time and increasing accuracy on-site.
Each thickness is colour-coded for quick selection, and they remain stable in damp or exposed environments. Perfect for cladding, glazing, framing, and cabinetry, they are trusted across multiple trades for their convenience and performance.
Core Features & Specifications
- Available in multiple thicknesses: 1mm to 10mm
- Slotted horseshoe shape allows fast placement over anchor points
- Colour-coded by size for fast, error-free selection
- Maintains shape and size under load
- Moisture-resistant and suitable for internal or external applications
The Window Packers Advantage
- Speeds up frame and cladding alignments during installation
- Reduces packing errors with clear colour coding
- Stable and long-lasting even in humid or wet environments
- Compatible with a wide range of structural materials
Compatible Substrates
- Timber: Ideal for use under timber frames, battens or sill plates.
- Steel: Works with steel studs, structural beams or facade channels.
- Aluminium: Commonly used in curtain wall and window frame systems.
- Concrete & Masonry: Suitable for blockwork, slab edges or wall reveals.
- Fibre Cement / Plasterboard: For tolerance adjustment during internal fit-outs.
Storage & Shelf Life Considerations
Store in a dry, shaded environment. Product has no expiry and remains dimensionally stable over time when kept clean and out of direct sunlight.
Frequently Asked Questions About Window Packers
Q: Can I use these packers in external wall cladding?
A: Yes. These packers are moisture-resistant and dimensionally stable, making them well-suited to external use in cladding systems.
Q: Will these packers compress or deform under load?
A: No. They are designed to retain shape under typical building pressures and will not compress like foam or fibre shims.
Q: How do I choose the right size on site?
A: The colour coding makes it easy. Just match the colour to the corresponding thickness. No calipers or measuring required.
Q: Are they reusable?
A: Yes, in non-critical applications. For compliance or structural use, it's best practice to use new packers each time.
Applications & Benefits
| Application / Use Case | Key Benefit | Primary Trades |
|---|---|---|
| Window and Door Frame Levelling | Quick placement under anchor points for clean, level frames | Glaziers, Builders |
| External Wall & Cladding Installations | Ensures consistent spacing and straight panel lines | Builders, Cladding Installers |
| Structural Frame Packing | Compensates for misaligned battening or uneven substrates | Builders, Carpenters |
| Joinery and Cabinetry Alignment | Fine thickness control during shopfitting and trim installation | Joiners, Fitout Contractors |
Applications & Benefits
| Application / Use Case | Key Benefit | Primary Trades |
|---|---|---|
| Window & Door Frame Packing | Corrects reveal and level around anchor points | Glaziers, Builders |
| Cladding Installation | Keeps panels straight despite batten irregularities | Builders, Cladding Installers |
| Joinery & Cabinetry Fit-Out | Ensures flush installs during trim-out or panel alignment | Joiners, Fit-Out Teams |
| Precast Panel Setup | Provides spacing tolerance before fixing heavy items | Builders, Structural Contractors |
Limitations & Safety
Limitations:- Not suitable for high-load bearing under structural beams or columns.
- Do not use in place of engineered support systems or adhesives where required.
- PPE: Gloves recommended when trimming packers.
- Ventilation: Not required.
- Handling: Lightweight and safe. No special handling needed.
- First Aid: Non-toxic. If ingested or inhaled by children, seek medical advice.
Compatible Substrates
- Timber: Ideal for packing under timber frames, battens, or sill plates—commonly used in joinery and cladding applications.
- Steel: Suitable for use against steel studs, structural beams, or façade channels where bolt-through alignment is required.
- Aluminium: Perfect for curtain wall and window frame systems—provides stable spacing without risk of galvanic corrosion.
- Concrete & Masonry: Can be used directly on slab edges, blockwork, or rendered surfaces when framing or anchoring is needed.
- Fibre Cement / Plasterboard: Common in internal fit-outs and pre-cladding where tolerance adjustments are required.
- Choosing a selection results in a full page refresh.