- Nationwide Delivery Within 7 Days
- Custom Cut Up To 6.1m Lengths
- Manufacturer Prices Available
- No Minimum Order
Place Your Order
Build Your Free Roof Sheet Quote
Order GRP roofing sheets online using our simple roofing calculator. Simply input your measurements, your chosen profile (box profile or corrugated), thickness, finish and whether you want to add GRP roof lights (the number of rooflight you need will be deducated from the number of sheets you require overall).
Speak To Our Team
If you need any support or assistance ordering your steel roof sheets or wall cladding, or you just have a question about which product, profile or finish is right for your project, our experienced team is here to help.
Every sheet is cut to your exact length and delivered anywhere in the UK, typically within 7 days. Our own transport fleet delivers your GRP clear roof lights alongside your steel roofing sheets in one drop, so everything arrives together, ready to install.
Matching GRP Roof Lights With Your Existing Roof Sheet Profile
Manufactured and cut-to-size for use alongside steel roof sheets and wall cladding, our GRP box profile and corrugated roof lights are useful additions to any domestic or commercial roofing project.
CS32/1000 Box Profile Roof Lights
Big 6 Corrugated Roof Lights
CS34/1000 Box Profile Roof Lights
Double 6m Corrugated Roof Lights
13.5/3 Corrugated Roof Lights
Not Sure Which Profile You Have?
Send us a photo or measurements of your existing roof and we’ll match it to the correct rooflight profile for your project – no guesswork, no wrong orders.
Where Clear Roof Sheets Work Well
Our GRP fibreglass roof sheets will let natural daylight into your building without cutting into the structural strength of your steel sheets – but they aren’t the right choice for every building. Here’s what to consider for your next roofing project.
Well suited to
✔ Workshops, garages and sheds
– Plenty of natural lights without running electric lighting all day
✔ Extensions, lean-tos and garden buildings
– Light-filled space without the cost of a full glazed roof
Our GRP roof light panels are translucent rther than completely see-through, so they will let in ample sunlight while keeping your build private.
Not recommended for
✖ Livestock buildings and animal housing
– GRP sheets let through a lot of solar heat as well as light
✖ On the roof, heat gain is the main risk
– Can cause animal housing to overheat in warmer weather
Heat gain is less of an issue on walls than it is on roofs – which means GRP wall cladding is often a beter fit for certain buildings than GRP clear roof sheets.
Every sheet is cut to your exact length and delivered anywhere in the UK, typically within 7 days. Our own transport fleet delivers your GRP clear roof lights alongside your steel roofing sheets in one drop, so everything arrives together, ready to install.
Clear Roof Sheet Specifications
Translucent, frosted finish
No clear glass, these fibreglass roof sheets let light through evenly without a see-through view, so it works for privacy-sensitive buildings too.
Factory-manufactured and held in stock
Made in a temperature-controlled factory and stocked at set lengths, then cut down to the exact size you need.
Bespoke lengths on request
Beyond our stocked sizes, larger pieces can be custom-manufactured at an additional cost and longer lead time.
Matched coverage width
Supplied to match standard box profile and corrugated coverage widths, so it sits flush with your steel sheets.
Always Surround GRP Roof Lights with Steel Sheets
As an installation note, any GRP roofing sheet (corrugated or box profile) is less structurally strong than steel.
Be sure to fit a single GRP rooflight sheet with steel roof sheets on either side, rather than running several GRP sheets together, to keep the roof’s structural integrity intact.
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What are GRP roof sheets?
GRP roof sheets (Glass Reinforced Plastic) are lightweight, translucent roofing panels made from plastic reinforced with fine glass fibres. They’re strong, durable, and ideal for letting natural light into industrial, agricultural, or domestic buildings.
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What are the benefits of GRP roof sheets?
GRP sheets combine strength, weather resistance, and light transmission. They don’t corrode, are easy to handle and install, and are suitable for both new builds and refurbishment projects. They’re especially popular for agricultural buildings and factory skylights.
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Are GRP roof sheets the same as fibreglass roofing?
Yes – GRP and fibreglass refer to the same material. Both terms describe a composite of plastic and glass fibres, known for being strong, lightweight, and translucent.
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Can GRP roof sheets be used with steel roof sheets?
Absolutely. GRP roof sheets are often used alongside steel box profile or corrugated sheets to provide natural daylighting within a roof system. They’re typically manufactured to match the same profile and pitch for seamless integration.
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How long do GRP roof sheets last?
With correct installation and maintenance, GRP roof sheets typically last 20 to 25 years. They are UV-resistant and maintain their strength and light transmission over time, even in harsh weather conditions.
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Do GRP roof sheets yellow or discolour over time?
High-quality GRP sheets are manufactured with UV-stabilised resin to prevent yellowing or loss of clarity. Cheaper, lower-grade sheets may discolour faster, so choosing a quality product is important for long-term performance.
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Can GRP roof sheets be cut to size?
Yes. GRP sheets can be supplied in custom lengths and easily trimmed on site with a fine-toothed saw or cutting disc. Always wear protective gear when cutting, as fibreglass dust can irritate the skin and eyes.
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Are GRP roof sheets suitable for residential use?
Yes – while GRP sheets are common in industrial and agricultural settings, they’re also ideal for carports, sheds, lean-tos, greenhouses, and patios where natural light is beneficial.
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How are GRP roof sheets fixed to the roof?
They’re typically fixed using roofing screws with sealing washers through the crown of the sheet. It’s important to allow for thermal expansion by not overtightening fixings and using the correct pre-drilled holes.
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Do GRP sheets provide insulation?
Standard GRP sheets are not insulated, but they help regulate indoor temperatures by allowing natural light in. For thermal performance, GRP can be combined with insulated systems such as twin skin roofing
or over-cladding.