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
