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Cut To Size Polycarbonate Greenhouse Glazing Panels

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166 reviews
Rated 4.7 out of 5 stars
5 stars
(143)
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1 star
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Experience the benefits of natural light without compromising durability and insulation with Cut To Size Polycarbonate Greenhouse Windows. Designed to fit any shape or size, these innovative greenhouse windows are stronger than glass, offering exceptional clarity and resilience. 

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mm
Min: 100mmMax: 3050mm
mm
Min: 50mmMax: 2030mm

Approximate Weight: 17.85 g

Free delivery when you spend £250+

Estimated delivery: from Check My Postcode

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100% recyclable
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Custom Cut-to-Size Polycarbonate Greenhouse Windows

Top Choice of Gardening Experts

Professional growers, nurseries, schools, businesses and home gardeners alike choose polycarbonate over other glazing materials for its durability, performance, and ease of use.

Unmatched Strength & Long-Term Durability

Polycarbonate is the strongest and most impact-resistant greenhouse glazing option available. At 200 times the strength of glass, it is virtually unbreakable, making it ideal for replacing shattered or worn-out panels. Unlike glass, which weakens and needs replacing over time, polycarbonate has an impressive lifespan of up to 20 years, providing a long-lasting, low-maintenance solution for your greenhouse. Make an investment in glazing that will last for many years to come.

Superior UV Protection for Healthier Plants

Our polycarbonate sheets block 99% of harmful UV rays, offering full protection against sun damage that can harm delicate plants. While traditional glass can allow harsh glare and intense direct sunlight, polycarbonate ensures even light diffusion, preventing hot spots and creating a balanced growing environment. This helps plants thrive in ideal growing conditions without the risk of overheating or uneven exposure.

Insulated for a Stable Growing Environment

The cellular structure of polycarbonate provides excellent thermal insulation, helping to regulate temperatures inside the greenhouse. This means better heat retention during cooler months and reduced overheating in the summer, maintaining a consistent and controlled climate to support plant growth year-round.

Custom-Cut & Easy to Install

We offer made-to-measure polycarbonate panels in standard and custom shapes, including triangular, trapezium, and bespoke designs. Simply enter your dimensions or upload a diagram for precise cutting. Despite its durability, polycarbonate is lightweight and easy to handle, designed for quick attachment to aluminium or wooden beams, ensuring a smooth and simple installation process for your new greenhouse panels. No specialised tools or skills are required!

Low maintenance

Keep your panels looking clear by cleaning periodically with mild soap and water. Polycarbonate is an easy, low-maintenance glazing material.

Cost Effective

Clarity

Weather Resistant

Maintainable

Salt Resistant

How do I fit replacement polycarbonate greenhouse panels?

Measuring Your Greenhouse

The first step in fitting replacement greenhouse panels is to accurately measure the existing frame. Make sure to measure the width and length of each panel opening. Also, measure the height at the eave and peak. Having detailed measurements of your greenhouse will ensure the proper fitting of replacement panels - remember, measure twice, cut once (or in this case, order once).

Ordering the Right Size

Use your measurements to order replacement polycarbonate panels in the appropriate standard sizes, or you can provide your dimensions to have custom panels precisely cut for an exact fit. Make sure to account for any overlap or wiggle room needed when ordering.

Preparing the Greenhouse Frame

Inspect the frame and make any necessary repairs before installing replacement panels. Check for loose screws, decayed wood, gaps, etc. A sturdy frame is crucial for proper panel fitting. Remove any remaining bits of old glazing material and clean the frame.

Installing the Panels

Attach your polycarbonate panels. In most cases, the panels are fitted into existing side and top aluminium or wood strips designed to hold the glazing in place. Make sure the panels slide fully into the frame channel.

Sealing the Edges

Caulk any gaps between the panels and frame with 100% silicone caulk. This will provide an extra layer of protection against leaks.

Following these steps will result in replacement polycarbonate panels that are correctly fitted and installed for optimal performance. Let us know if you need any guidance selecting the right panels or installing them properly in your greenhouse frame.

Polycarbonate Greenhouse Windows Specifications

Material Polycarbonate
Finish Clear
Available Thicknesses 2mm, 3mm, 4mm, 5mm
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

Perspex® Palsun Polycarbonate Technical Sheet

Frequently Asked Questions

Have a question? You can find answers to commonly asked questions about our products, delivery, returns, cancellations and more on our FAQs page

Alternatively, for help and assistance, you can use our Live Chat or reach out to us via email using the contact form on our Contact Us page. 

Delivery depends on the size of your order

Reviews

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4.7 / 5 166 reviews
Judith, 9th March
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Just what I needed to replace broken glass in the greenhouse.
Verified, Collected by Cut My
Mark, 8th March
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Very poor not suitable for use at all. Blew out on the first night with a slight gust of wind
Verified, Collected by Cut My
Cliff Hope, 5th March
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Easy to order and quick delivery with notifications.
Verified, Collected by Cut My
Alan Boyd, 26th February
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Difficult to tell from the toughened glass it replaced. Light but strong it took only a few minutes to put in place. If I need to replace more glass panes in future I'll certainly use this product. Highly recommended.
Verified, Collected by Cut My
Pamela Gillespie, 22nd February
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Great service
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phil howell, 13th February
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Great service
Verified, Collected by Cut My
Tim Crowdy, 5th February
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Exactly what I needed
Verified, Collected by Cut My
Mr Stockham, 5th February
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good quality, accurate measurement and prompt delivery
Verified, Collected by Cut My
Michelle Stenson, 29th December
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Fits the frames beautifully. Clear and unmarked, protective film was used on both sides of the plastic and well protected in transit.
Verified, Collected by Cut My
THOMPSON, 28th December
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Not yet fitted but looks good quality
Verified, Collected by Cut My
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