28mm Flat Glazing Packer

Type FP28 Glazing Packers are precision-engineered shims designed for accurate spacing and levelling in 28 mm glazing systems.

They provide consistent, non-compressible support under sealed units, ensuring even load distribution, proper alignment, and long-lasting performance.

Made from polypropylene, these packers are rot-proof, weather-resistant, and built to retain their shape under load.

Why installers choose FP28 Glazing Packers:

• Keeps glass units level, square, and properly supported
• Prevents frame distortion, gasket stress, and rattling
• Non-compressible, durable, and resistant to weather or moisture
• Ideal for use with uPVC, aluminium, and timber glazing
• Suitable for windows, doors, and curtain wall systems

Built for reliability and precision, these packers deliver consistent results across residential and commercial installations.

What Each Thickness is Used For

1 mm – Fine Adjustment & Final Levelling

Used for minor corrections where the frame or glass unit is almost perfectly level.

Best for:

• Final alignment adjustments
• Removing small gaps
• Fine-tuning after main packing

2 mm – Light Levelling & Small Gaps

A common choice for small spacing corrections without affecting overall alignment.

Best for:

• Slightly uneven surfaces
• Minor frame inconsistencies
• Light levelling under glazing units

3 mm – Standard Everyday Packing

One of the most widely used thicknesses on site.

Best for:

• General window installations
• Standard levelling work
• Typical glazing support

4 mm – Moderate Gap Filling

Used where noticeable unevenness or gaps exist.

Best for:

• Medium adjustments
• Supporting heavier sections
• Aligning slightly misaligned frames

5 mm – Larger Adjustments & Load Support

Provides stronger support for heavier glazing units.

Best for:

• Larger gaps
• Heavier sealed units
• Structural levelling requirements

6 mm – Maximum Spacing & Heavy Load Situations

Used when significant correction or support is needed.

Best for:

• Large gaps or uneven openings
• High load-bearing points
• Base packing under frames