Polyroof Introduces PRX Liquid System for Profiled Metal Roof Overcoating

Engineered Cold-Applied Waterproofing for Profiled Sheet Refurbishment

Polyroof has expanded its commercial liquid waterproofing lineup with the official launch of its PRX Range, a specialist system developed specifically for the refurbishment and protection of profiled metal roofs. As aging industrial units and agricultural buildings suffer from cut-edge corrosion, degraded lap joints, and failing fixings, cold-applied liquid membranes have increasingly replaced full sheet tear-offs as a cost-effective remedial option.

The new PRX system provides a seamless, reinforced membrane that encapsulates existing profiled steel or aluminium sheets without requiring hot works. Designed to adhere directly to challenging industrial substrates, the system addresses common failure points such as fixings, gutters, and rooflight overlaps, extending the operational lifespan of existing commercial structures.

Addressing Practical Site Challenges

Refurbishing profiled metal cladding presents specific technical hurdles, including structural thermal movement and substrate rust. The PRX formula accommodates thermal expansion and contraction across large metal spans, preventing premature cracking or delamination. By eliminating the need for torches or open flames, the cold-applied liquid application significantly reduces site safety risks and simplifies method statements for roofing contractors working on occupied buildings.

What This Means for UK Roofing Contractors and Merchants

For professional roofers, cladding specialists, and general builders, the launch of the PRX Range introduces a dedicated product option when quoting commercial refurbishment jobs. Choosing a specialised liquid system over a full roof replacement saves customers substantial capital outlay and reduces project labour hours. Tradespeople should check lead times and technical backing through specialist roofing merchants, comparing coverage rates against existing cold-applied polyurethane options to ensure cost-efficiency on large-square-metre contracts. Watch out for specific primer requirements depending on whether you are coating plastisol, PVDF, or bare corroded steel.

Practical Site Takeaways

• Eliminates hot works: Safer installation processes lower site insurance complexity and simplify risk assessments.
• Detailed joint prep required: Lap joints and fixings must still be properly cleaned and prepped to ensure the system achieves its full bonded lifespan.
• Verify substrate compatibility: Consult Polyroof specification guides to ensure correct primer selection for specific metal coatings.

Reported by Roofing Today — original article