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*10 year guarantee only applies to acrylic perspex
Greenhouse Windows Details
Upgrade your glass greenhouse windows with our clear acrylic sheeting or our polycarbonate. You will still be able to view your plants whilst keeping them safe. We have also constructed a guide helping you decide on the material you buy as well as assist you in how to replace greenhouse and shed windows.
No matter the size of your greenhouse, we can provide you with clear plastic materials exactly to your specifications and measurements. We can also add options for customization should you require them. This means that all you need to do is fit the panel onto your greenhouse!
Both clear acrylic and polycarbonate are excellent alternatives to greenhouse glass panels as well as shed windows, as they are lightweight and easier to install than traditional glass. While glass would normally deteriorate as a greenhouse glass pane, either by losing transparency or warping, the long-lasting consistency of clear greenhouse windows makes them an easy replacement and repurposes your greenhouse windows - giving the whole feature a second wind.
When understanding what option is best for your greenhouse glass panels, choosing the best greenhouse plastic option is fundamental to maintaining and ensuring a high-quality grow space throughout the year.
Acrylic Greenhouse Windows
Clear acrylic sheets from Cut My are the cheaper option for your greenhouse windows, and they are up to 10 times stronger than glass. They don’t show any sign of ageing with continual use, meaning you can expect well in excess of 10 years of use from your greenhouse windows without them showing signs of deterioration.
Further to this, Acrylic Greenhouse Windows provide up to 92% light transmission, higher than most types of glass, so it becomes preferable for a number of other applications like secondary glazing or roofing. Clear perspex also has a ten year guarantee and is 100% recyclable.
Polycarbonate Greenhouse Windows
Clear polycarbonate sheeting is much tougher than acrylic, although slightly more expensive. This versatile material with a wide range of possible uses, from riot shields to external panels. This superior strong material can be purchased in varying thicknesses up to 12mm to provide further levels of insulation for your greenhouse. Two hundred times stronger than glass, our polycarbonate replacement greenhouse glass alternative is available as a durable, safer option for replacing greenhouse glass.
Show your greenhouse some love!

Does this look familiar to you?
With the rising cost in your household food bill there's no better time to get the greenhouse ready to grow your own vegetables. Replacing broken greenhouse windows with Perspex acrylic or polycarbonate sheets is a cost effective and quick solution.
Benefits of Perspex Acrylic:
10x stronger than glass
Shatterproof
92% light transmission
10 year guarantee on outdoor ageing
Polycarbonate doesn't have a 10 year gurantee but is the preferred option if you need something with a higher impact resistance due to football practice in the garden.

Key Features of Greenhouse Windows

Excellent Clarity
Clear Perspex acrylic and polycarbonate sheets give excellent optical clarity, ranging up to 92% light transmission, higher than most types of glass, making our clear plastic sheets an advantageous option for use in windows or as a skylight.

Versatile
Greenhouse Window sheets are durable, resistant to impact and shatterproof, making them a safer option.
Comparably, our polycarbonate is 200 hundred times stronger than glass and 30 times stronger than our Perspex acrylic sheets, as well as being shatter-resistant. You can expect up to 20 years of continued use from these long-lasting panels without showing signs of deterioration.

Weather resistant
Clear acrylic sheeting is UV and weather-resistant, as well as being resistant to prolonged exposure to sunlight. In addition, clear greenhouse sheets are also resistant to most chemicals and have a low moisture absorption rate, so clear plastic sheets are useful for a host of different environments and are perfect for outdoor applications.

Durable
With a higher impact tolerance, clear polycarbonate sheets make a stronger, long-lasting alternative to both acrylic and glass. At its thickest point polycarbonate is also resistant to bullets, and its brake form is a tenth of an inch thick.

Malleable
Clear cast Perspex acrylic sheeting is easy to fabricate and can be cut, drilled and shaped to any requirements, so it’s a flexible material to work with. The cut surfaces can be polished and sanded easily for a more professional finish to your sheeting.

Inexpensive
Replacement greenhouse windows can be accessible and inexpensive compared to glass window replacements.

Maintainable
All of our greenhouse plastic options are equally easy to clean, with just warm soapy water and a needed to ensure a hygienic finish.

Salt Resistant
Both materials we use for greenhouse windows are salt-resistant so they are good for use if you live in coastal areas.
Acrylic Greenhouse Windows Specifications
Material | Acrylic |
Finish | Clear |
Available Thicknesses | 2mm, 3mm, |
Maximum Sheet Size | 3050mm x 2030mm |
Minimum Sheet Size | 100mm x 50mm |
Fire Rating | UK Class 4 Fire Rating |
Water Absorption | 0.2% |
Manufacturers Tolerances | +/- 5% |
Cutting Tolerances | +/- 1mm |
Service Temperature | -40c to 80c |
Perspex® Acrylic Technical Sheet
Polycarbonate Greenhouse Windows Specifications
Material | Polycarbonate |
Finish | Clear |
Available Thicknesses | 2mm, 3mm, |
Maximum Sheet Size | 3050mm x 2030mm |
Fire Rating | UK Class 1 Fire Rating |
Water Absorption | 0.15% |
Manufacturers Tolerances | +/- 5% |
Cutting Tolerances | +/- 1mm |
Service Temperature | -50c to +100c |
Frequently Asked Questions
What can I use instead of glass in a greenhouse?
Polycarbonate sheeting is an ultra-tough, versatile material with a wide range of possible uses, from secondary glazing to riot shields, to external panels. This superior strong material can be purchased in varying thicknesses to provide further levels of insulation for your greenhouse plastic. Two hundred times stronger than glass, our polycarbonate replacement greenhouse glass alternative is available as a durable, safer option for replacing the glass.
Is acrylic good for the greenhouse?
Acrylic is ideal for greenhouse pane replacements due to it having a higher light transmission than traditional glass. With a 92% light transmission, acrylic offers a fantastical alternative to glass for consistent high-quality optic transparency.
How thick should an acrylic greenhouse be?
Standard greenhouse glass is typically 3mm thick. As such we are able to accommodate that with our alternative plastic greenhouse window replacement options. However, by opting for acrylic you have the option to change the thickness to best suit your needs with a thicker sheet offering more protection.
Is acrylic or polycarbonate better for greenhouses?
Polycarbonate is ideal for greenhouse windows due to its versatility, though acrylic is great for those looking for a cheaper option.
Delivery Policy
FREE DELIVERY WHEN YOU SPEND £250 OR MORE
All delivery charges include excellent standards of packaging to ensure your order gets to you in great condition.
Economy
free on orders over £250
Less than 700x700mm or longest side <1300mm
£9.95
Estimated to arrive in 4-5 working days.
Anything larger
£15.95
Estimated to arrive in 6-8 working days.
Express
Fast track your order
Less than 700x700mm or one side <1300mm
£14.95
Estimated to arrive in 3 working days.
Anything larger
£24.95
Estimated to arrive in 5 working days.
Next Working Day
Order before 1pm
Less than 700x700mm or one side <1300mm
£29.95
Anything larger
£44.95
If out of stock, we will contact you to make other arrangements.
Sample Delivery
Estimated to arrive in 7 days.
Samples are generally 100mm x 100mm
£
3.00
Standard Collection
READY FROM 4 WORKING DAYS
Estimated ready from 4 working days
Collect from Unit 60, BN5 9XR
Collect from 9am to 12:30pm and 1pm to 5pm, Mon to Fri.
FREE
Express Collection
Order before 1pm
Ready within 2 working days.
Collection from Unit 60, BN5 9XR.
Collect from 9am to 12:30pm and 1pm to 5pm, Mon to Fri.
£
14.95
For further information on our terms and conditions regarding delivery, please read our Delivery Policy or Terms and Conditions page
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