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GRP Roof Lighting

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Glass-reinforced polyester (GRP) is a translucent thermoset material under the general heading of plastic that, once formed into the required shape, can never be reshaped after curing. MODEK manufactures GRP using an automated continuous-line laminating machine that ensures consistently high product quality in successive consignments and allows for any transportable length of sheet to be made. It is available in a range of popular colours and shapes.

Glass-reinforced polyester (GRP) was first manufactured in South Africa in 1959. It is a very tough and durable material that in opaque format is used for yacht hulls, aircraft nose cones and minesweeper
hulls. It has a number of popular applications and benefits.

  • MODEK GRP is scratch-resistant, making it easy to handle on site, and UV resistant, to protect people and interiors from harmful UV rays
  • When choosing MODEK GRP, you will need to specify colour, clarity/opacity, profile and weight required
  • This e-mail address is being protected from spambots. You need JavaScript enabled to view it can help you choose the right GRP product for a given application
  • Modek has also launched a non-fragile GRP roof light to increase safety in the workplace


Modek GRP is extremely durable and resistant to a number of chemicals.

For more information, see our FAQs.

The Benefits of Modek GRP Roof Sheets


Modek fiberglass Reinforced Polyester Sheeting, or GRP, has a number of benefits to

Choosing the correct Modek GRP roof sheet


MODEK’s GRP products can be selected along a range of criteria, depending on the requirements



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