Balcony - Double Layer Roofing 450grm Fibreglass Kits 5% OFF IN JULY

🔶 Complete Your Kit – Trims @ £11 inc VAT → Click Here

Double Layer 450gsm GRP Fibreglass Roofing Kits — Built for Balconies & Walkways

Available from 5m² up to 50m², our Double Layer Balcony & Walkway Fibreglass Roofing Kits are engineered for surfaces that demand the highest level of strength, waterproofing, and durability. Whether you're waterproofing a balcony, terrace, flat roof walkway, or any area subject to regular foot traffic, this is the kit built for the job.

We've been supplying and installing GRP fibreglass systems for many years — we know what works, and this double layer system is our go-to recommendation for balcony and walkway applications where performance cannot be compromised.

Why Double Layer?

A double layer application using 450gsm fibreglass matting provides significantly enhanced tensile strength and waterproofing integrity compared to a single layer. It's the professional standard for balconies, walkways, and any surface exposed to regular movement, thermal cycling, and the elements.

• ✅ Superior strength and crack resistance
• ✅ Excellent waterproofing — no joints, no seams, no leaks
• ✅ Handles foot traffic and structural movement with ease
• ✅ Long-lasting protection — 50+ year lifespan when correctly applied
• ✅ Can be applied from as low as 5°C — suitable all year round

Optional tool kits are available — select from the drop-down above if required.

Key Details

• ✅ Full installation instructions provided
• ✅ Kits available from 5m² to 50m² — larger sizes available upon request
• ✅ Catalyst provided at 2% Standard Cure
• ✅ Suitable for DIY and professional installers

Don't forget your trims — edging trims ordered alongside a full roofing kit are available at just £11 inc VAT. Click here to select your trims.

Here are 5 more great reasons to buy from us:

Returns are easy, if the items are?unopened and unused?then simply?contact us?for a returns number and send your item to our returns centre for fast processing. We'll get you a replacement or refund in a snap!

In the unlikely event that you find your item cheaper at another online store, just let us know and we'll beat the competitor's pricing hands-down.

We insist that you love everything you buy from us. If you're unhappy for any reason whatsoever, just let us know and we'll bend over backwards to make things right again.

Ordering from APEX Fibreglass Roofing Supplies is 100% safe and secureso you can rest easy. Your personal details are never shared, sold or rented to anyone either.

Here are 5 more great reasons to buy from us:

Returns are easy, if the items are?unopened and unused?then simply?contact us?for a returns number and send your item to our returns centre for fast processing. We'll get you a replacement or refund in a snap!

In the unlikely event that you find your item cheaper at another online store, just let us know and we'll beat the competitor's pricing hands-down.

We insist that you love everything you buy from us. If you're unhappy for any reason whatsoever, just let us know and we'll bend over backwards to make things right again.

Ordering from APEX Fibreglass Roofing Supplies is 100% safe and secureso you can rest easy. Your personal details are never shared, sold or rented to anyone either.