Fiberglass Chopped Strand Matting - 450gsm - 6.75kg

This 6.75kg fibreglass matting is designed for use during the installation of a ProGRP roof, appli...

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PVC Cladding UKCromar Light Fiberglass Chopped Strand Matting - 450Gsm X 6.75Kg
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£36.61
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Professional Building SuppliesCromar Light Fiberglass Chopped Strand Matting - 450Gsm X 6.75Kg
Free delivery in 1–3 days
£43.07
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Product Information

Full details

This Cromar 450gsm fiberglass chopped strand matting is designed for professional roofers and DIY enthusiasts installing a ProGRP roofing system. Its primary benefit is providing structural reinforcement for roof areas that require a reliable, light-duty waterproof base. Note that this matting is specifically calibrated for light foot traffic and should not be used in high-traffic commercial zones without additional reinforcement specifications.

All features

Model Part NumberCSM450-6.75
BrandCromar

Extended Product Information

FAQs

Is this matting suitable for heavy commercial foot traffic?

No, the 450gsm variant is designed specifically for light foot traffic. For heavy-duty areas, you should use a heavier grade of matting.

How much area does one 6.75kg roll cover?

One roll provides approximately 12 square metres of coverage.

Can I use this with other resin brands?

While it is engineered for ProGRP systems, it is generally compatible with most standard roofing polyester resins, but testing on a small sample area is recommended.

What safety equipment is required?

You should wear gloves, long sleeves, eye protection, and a mask to prevent skin irritation and inhalation of fiberglass dust.

Should I overlap the sheets of matting?

Yes, it is standard practice to overlap the edges of the matting by at least 50mm to ensure a continuous, waterproof seam.

How do I store the unused portion of the roll?

Keep it in its original packaging or a sealed plastic bag in a dry, dark place to keep it free from moisture and debris.

Troubleshooting

The matting is not becoming transparent during resin application.

You are likely using insufficient resin; apply more until the fibers appear fully wetted and clear.

Air bubbles trapped under the matting.

Use a metal consolidation roller immediately after wetting the matting to push air out from under the fibers.

Edges of the matting are fraying during application.

Use a sharper cutting tool and handle the cut pieces as little as possible before placing them on the deck.

Pros and Cons

Pros

  • Easy to wet out with resin
  • Excellent structural reinforcement for ProGRP systems
  • Covers a generous 12 square metres per roll
  • Consistent material quality for professional results

Cons

  • Not suitable for high-traffic or commercial loading areas
  • Requires proper safety gear to handle fiberglass strands
  • Needs precise resin-to-matting ratios for best performance

Setup, Compatibility & Care

Before installation, ensure your roof deck is clean, dry, and moisture-free. The matting should be cut to size using sharp industrial scissors or a knife to prevent fraying at the edges. Store the rolls in a cool, dry environment away from direct sunlight and humidity to maintain the integrity of the binding agent. When handling, always wear gloves and long-sleeved clothing to protect skin from glass fibers, and consider using a dust mask to avoid inhalation of stray particles during cutting.

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