10 Best 14x Polycarbonate Twin Wall Sheets 4mm in The UK

Last updated on 13/09/2025

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Best Choice

9.8

Exceptional

Generisch

15 x twin-wall twin-wall sheets, 1200 x 800 x 4 mm, polycarbonate multi-skin sheets, greenhouse

Main Highlights

We sell a special item of brand new, unused multi-wall sheets made of colourless polycarbonate with original, undamaged protective film. The plates have the following features: fire behaviour B-s1, d0, light transmission approx. 81% - Surface weight 0.75 kg/m² / 750 g/m² - Heat transfer coefficient U (W/m²K) 3.9 - UV-protected on one side - insulating - hail-proof / impact resistant - durable / weather-resistant

5 x twin-wall twin-wall sheets, 1200 x 800 x 4 mm, polycarbonate multi-wall sheets, greenhouse

Main Highlights

We sell a special item of brand new, unused multi-wall sheets made of colourless polycarbonate with original, undamaged protective film. The plates have the following features: fire behaviour B-s1, d0, light transmission approx. 81% - Surface weight 0.75 kg/m² / 750 g/m² - Heat transfer coefficient U (W/m²K) 3.9 - UV-protected on one side - insulating - hail resistant / impact resistant - durable / weather-resistant.

14 Pieces 4' x 2' x 0.16'' Polycarbonate Greenhouse Panels,Twin-Wall Polycarbonate Panels Waterproof UV Protected Impact Resistance Reinforced Clear Roofing Panels for Greenhouse,Plant Stand Roof

Why We Love It

Premium, unbreakable Polycarbonate panels.
Optimal light transmission for plants.
Versatile and easy cutting.

Main Highlights

Premium Polycarbonate Panels:Polycarbonate greenhouse panels is made from virtually unbreakable 4 mm twin-wall polycarbonate;The greenhouse panels allow up to 89% light transmission for optimal plant growth while blocking out over 99.5% of harmful UV rays;Each panels has nice impact strength,hard wearing and lightweight, not easy to break or deform,twin-wall polycarbonate is aslo sufficiently flexible to allow moderate curves
Protecting Plant:Greenhouse roof panels create the suitable environment for your plants to thrive in the greenhouse;The twin-wall structure reduces heating costs in winter while minimizing excessive heat in summer；Its working temperature ranges from 125 to -40 F°
Easy to Cut:Polycarbonate panel can be cut to the desired size,just use a utility knife, please be careful when cutting;You can also cut polycarbonate sheets with a circular saw,jig saw,hand saw or utility knife;It will not crack or splinter;This product is shipped with a thin protective film on both sides,to protect the products from being scratched on the delivery,ensure the completeness of the polycarbonate panels for you;Please peel off the outer white protective film before use
Wide Range of Applications:There are 14 pieces of twin wall polycarbonate panels,each size is about 2'W X 4'Lx 0.16'';Enough quantity and proper size can meet your different needs;polycarbonate greenhouse panels commonly is used for build plant greenhouses;It can also be used for a multitude of applications such as balcony canopy,aisle roof,garden fences,swimming pool roof,carports,fish tank lids ect
Attentive Service:Thoroughly tried and tested,we're confident you'll love your polycarbonate greenhouse panels;If you're not happy with it for any reason, contact us and we'll make it right

14 Pcs 4mm Twin Wall Polycarbonate Greenhouse Sheets, 121x60.5 cm Transparent Roofing Panels for Garden, Durable UV Resistant Plant Cover

Why We Love It

Durable stainless steel construction.
Easy to install and use.
Provides exceptional weather resistance.

Main Highlights

Stainless Steel Greenhouse Clips are Reliable and Durable, providing essential support for Greenhouse Glass Panels. Designed to withstand harsh weather conditions, these clips help secure your greenhouse, ensuring stability during storms and heavy winds. Keep your plants safe with our premium clips, ideal for any greenhouse setup.
Introducing our 50x Greenhouse Clips, designed with durable W-shaped stainless steel clamps featuring a 1.6 mm diameter, perfect for securely fastening plants and supports in your greenhouse. These versatile clips are ideal for a variety of gardening projects, ensuring stability and longevity for your greenhouse setup. Enhance your gardening experience with reliable and robust clips today!
Easy To Install: Our Stainless Steel Greenhouse Clips provide a secure grip, ensuring your Greenhouse remains protected during strong storms and heavy rain. Designed for durability and reliability, these clips are essential for maintaining your Greenhouse structure and supporting plants effectively. Perfect for any Gardening enthusiast looking to enhance their setup.
Wide Application: These Greenhouse Clips are designed for use in conventional Greenhouses, providing a secure fit for glass panels. Compatible with various materials including Hollow Core Boards, Multi-Layer Wallpaper, Polycarbonate Boards, and Double-Layer Boards. Ideal for enhancing stability and durability in your gardening projects.
High-Quality Material: This Greenhouse Bracket is crafted from premium Stainless Steel, ensuring resistance to rust and deformation. Its Wear-Resistant and Durable design provides long-lasting support, enhancing the stability of your Greenhouse. Ideal for maintaining a safe and secure environment for your plants, this bracket is a reliable choice for your gardening needs.

4mm (61cmW x 122cmL - 2ftW x 4ftL) 15 Sheet Polycarbonate Roofing Sheet Clear Greenhouse 10 Year Warranty UV Protection (ONLY Available Mainland UK)

Why We Love It

Superior UV protection guaranteed.
Durable polycarbonate material used.
Perfect for greenhouse applications.

Main Highlights

4mm (61cmW x 122cmL2ftW x 4ftL) 15 Sheet Polycarbonate Roofing Sheet Clear Greenhouse UV Protection (ONLY Available Mainland UK)
Product type: GREENHOUSE
Brand: Tilara

Ideal for diverse applications.
Easy to cut and transport.
Weather and temperature resistant.

Main Highlights

FLEXIBLE APPLICATION - Whether as a replacement part for your greenhouse, cold frame, carport or for your DIY project, these 14 UV-resistant GARDEBRUK twin wall sheets in standard size are ideal for every application - there are no limits to your creativity!
EASY TO CUT - The polycarbonate sheets can easily be cut to size with a cutter knife or a saw. Thanks to their low weight, the panels are easy to transport and yet extremely stable thanks to their hollow space system.
HIGH WEATHER RESISTANCE - Polycarbonate is a weather-resistant, robust material. The hollow-chamber sheets are quite resistant to cracks, hail, impacts and feature a UV coating. Perfect for your greenhouse or conservatory.
HIGH FLEXIBILITY - The panels are flexible in a small frame and thus guarantee simple and break-free installation. They are heat-resistant up to about 120 degrees Celsius, making them ideal for long heat periods.
GOOD TEMPERATURE RESISTANCE - The special UV coating reflects the solar rays and thus causes much less heating in summer. Its excellent thermal insulation remains in winter. This allows you to enjoy your conservatory and your plants at any time of the year!

TEOV Polycarbonate Greenhouse Sheets 14Pcs 121x60.5 cm, 4mm Polycarbonate Roofing Sheets, Twin-Wall Transparent Panels for Greenhouse Garden

Why We Love It

High quality, durable material.
Energy-efficient for year-round use.
Versatile for various applications.

Main Highlights

【QUALITY MATERIAL】Our products are made of high quality polycarbonate material, size of each panel: 121 x 60.5 cm, thickness: 4 mm, with UV resistance, impact resistance, waterproof, anti-yellowing and other characteristics. (Tip: the outer white protective film can be peeled off before use.)
【GREEN ENERGY SAVINGS】The polycarbonate greenhouse panels' double-layer honeycomb construction reduces heating costs in winter while minimizing excess heat in summer, and a special coating on the underside eliminates condensation drips. The operating temperature range is 125 to -40°C.
【POWERFUL】The polycarbonate roof panels provide 80% light transmission and the transparent design keeps the greenhouse bright. It also offers 99.5% UV protection, creating an ideal environment for plant growth.
【EASY TO HANDLE】Our products are lightweight and easy to handle and install. You can use a sharp knife or other tools to cut it into any shape or size you need.
【VERSATILE】Whether for greenhouses, pool roofs, outdoor canopies, garden fences, aisle roofs, and other outdoor and indoor applications, polycarbonate sheets are the ideal choice!

Impact-resistant and UV-resistant sheets.
Easy installation and flexible cutting.
Versatile applications for various uses.

Main Highlights

[For greenhouses and gazebos] The impact-resistant and UV-resistant twin-wall sheets are specially designed for greenhouses, 4 mm thick hollow chamber sheets in standard size, suitable for all standard greenhouses and gazebos.
[Ideal dead weight] Our UV-resistant twin-wall sheets in standard size each have a weight of 700g/m².
[All-rounder] The range of applications for multi-skin sheets is versatile. Ideal for cold frames, horticulture, greenhouses, carports, shade, etc. The sheets are resistant to temperatures of up to around 120 degrees Celsius, which means that even long periods of heat have virtually no effect on the materials.
[Flexible cutting] Simple, uncomplicated installation! The panels can be easily and variably cut to the dimensions of your greenhouse using a cutting knife/carpet knife.
[High weather resistance] Polycarbonate is a weather-resistant, robust material. The hollow chamber multiwall sheets are highly resistant to breakage, hail and impact and have a UV coating. Perfect for your greenhouse or conservatory.

CHEOAR 10 Pack 4mmx61x121cm Polycarbonate Sheets, 4' x 2' x 0.16'' Twin-Wall Plastic Roofing Sheets, All Weather Clear Roofing Sheet Greenhouse Plastic Panels Outdoor

Free Shipping

Why We Love It

Strong impact resistance for durability.
Weather-resistant for year-round growth.
Highly transparent for optimal light.

Main Highlights

Strong Material - 10 pieces of 4 x 2 ft polycarbonate sheets, approximately 0.16 inches thick, feature a twin-wall design for outstanding impact resistance, making it withstand hail and falling objects without cracking or breaking, is the perfect material for greenhouses
Weather Resistant - Greenhouse polycarbonate can withstand extreme weather conditions, ranging from -40°C to 120°C, including hurricanes, heavy rainfall, and snow loads. With excellent heat preservation and insulation, they ensure a stable and comfortable environment for plants year-round, extending the growing season
High Transparency - The polycarbonate roofing sheets feature highly transparent material with a UV-resistant coating, effectively blocking 99.9% of UV while allowing an 89% light transmission. The double-layer structure diffuses light softly, promoting healthy and robust plant growth
Easy to Work with - The plastic roofing sheets not only save on handling and installation costs but also offer easy cutting without cracking or splintering. Additionally, they can be cold-bent to create curved roofs, making them perfect for DIY garden builders
Widely Used - Lightweight and clear polycarbonate sheet are ideal for greenhouses, pool roofs, aisle roofs, garden fences, cold frames, aquarium lids, chicken coop roofs, hurricane windows, and more. Combining aesthetics with practicality, they offer versatile solutions for various applications

The Fellie 4mm Polycarbonate Greenhouse Sheets 14pcs Poly Plastic Roof Panel for Outdoor Canopy Carport Cold Frame Replacement Shed Panel, 61 x 122cm-Clear

26% Off

Why We Love It

Easy to assemble.
Versatile application.
High quality material.

Main Highlights

【Widely Use】Our 4mm polycarbonate greenhouse sheets adopts a hollow double-layer structure design, the outer surface has flowing stripes to help with drainage, suitable for greenhouse, roof canopy, carport, etc.
【Easy to Cut】14 pieces of plastic roof sheets can be easily cut into the shape and size you need with an art knife or other props, with strong resistance to bending and prevent deformation under compression.
【Premium Material】This clear greenhouse panel is made of premium polycarbonate sheets, which is waterproof, UV resistant, and has strong flame retardancy, fade resistance, durable, can be used for a long time at -30°C to 120 °C.
【Brief Specification】The dimension of greenhouse polycarbonate sheet is 61 x 122 cm, thickness is 4 mm, lightweight and easy to install, the total number of packages is 14 pieces per pack.
【After-sale Service】Polycarbonate roofing sheet is great for greenhouse, outdoor canopy and carport. If you have any question, please contact us directly, we will reply you as soon as possible.

9.0

Superb

Save 26%

We scanned 398 products

We reviewed these offers relevant to the 14x Polycarbonate Twin Wall Sheets 4mm within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like Generisch, VASALAID, Generic, Tilara, Gardebruk, TEOV, Arebos, The Fellie, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best 14x Polycarbonate Twin Wall Sheets 4mm in the market, we considered we took a deep dive into 1991 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

The clear winner of our analysis is 15 x twin-wall twin-wall sheets, 1200 x 800 x 4 mm, polycarbonate multi-skin sheets, greenhouse. We love many things about this product by Generisch.
The best value product for most shoppers and where user satisfaction is continuously the highest is 5 x twin-wall twin-wall sheets, 1200 x 800 x 4 mm, polycarbonate multi-wall sheets, greenhouse by Generisch based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for 14x Polycarbonate Twin Wall Sheets 4mm and the best cost-to-value ratio is The Fellie 4mm Polycarbonate Greenhouse Sheets 14pcs Poly Plastic Roof Panel for Outdoor Canopy Carport Cold Frame Replacement Shed Panel, 61 x 122cm-Clearat The Fellie with a 26% discount.
Our list of the best 14x Polycarbonate Twin Wall Sheets 4mm is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.

10 Best 14x Polycarbonate Twin Wall Sheets 4mm in The UK

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The Fellie 4mm Polycarbonate Greenhouse Sheets, Set of 12 Pieces of Plastic Roofing Sheets, Clear Double Layer Polycarbonate Panel for Greenhouse, Outdoor Canopy, Carport, 61x100cm

We scanned 398 products

We concluded that: