Polycarbonate Secondary Glazing
From
${{ (incVAT() ? initialPrice.incVAT : initialPrice.exVAT).toFixed(2) }}
${{ (incVAT() ? initialPrice.salePriceIncVAT : initialPrice.salePriceExVAT).toFixed(2) }}
${{ (incVAT() ? initialPrice.incVAT : initialPrice.exVAT).toFixed(2) }}
Bespoke Fabrication
We have the machinery and expertise to manufacture bespoke items in acrylic, polycarbonate and many other plastics, from one-offs to large production runs. Read more about the various services we offer, or complete the form below to request a quote.
CNC Routing
Our advanced Multicam Apex 3R (3 Axis) CNC routers allow us to provide an extensive range of precision CNC routing services. Read more
CNC Laser Cutting
Laser cutting is a fabrication process that uses a thin, intensely focused stream of light to cut through a range of different materials, including plastics and acrylics. Read more
Diamond & Flame polishing
Edge polishing is a fabrication process that polishes the edges of acrylic panels, removes any cutting marks, and achieves a smooth, glossy finish. Read more
Rotary & Laser Engraving
Laser engraving is a fabrication process that uses a laser beam to physically remove the surface of a material to create an indentation that is noticeable to both the eye and touch. Read more
Line Bending
Line bending is a process that’s used to make precise folds in plastic and acrylic components. Our line bending fabrication service allows us to bend plastic and acrylic sheets along a defined ‘line’ – without any need for gluing or joining. Read more
Have bespoke requirements?
Complete this form and we will get back to you with a quote.
Secondary polycarbonate glazing provides an additional layer of glazing to your existing windows, helping reduce heat loss in your home while reducing sound levels. Fitting secondary glazing with magnetic adhesive tape is a simple DIY process.
Key features
- High impact strength
- Excellent optical clarity
- Strength
- Light weight
- Cost-effective
- Great insulation
- DIY installation
- Cut to size
- Reduce sound levels
- Shatterproof
Detailed description
Excellent optical clarity
Polycarbonate sheet benefits from excellent optical clarity, it's as clear as glass so lets light through while keeping the cold out.
High impact strength
Polycarbonate sheet has incredible impact strength, while acrylic can be up to 10x the impact strength of glass, polycarbonate has up to 200x the impact strength of glass.
Temporary/Seasonal
Once installed and supported by the magnetic tape, polycarbonate glazing panels can be easily removed and stored when not required.
Insulation
Polycarbonate performs well as an insulating material, providing superior insulation to a sheet of glass of the same thickness, in addition to being cheaper and easier to install and maintain. The thermal conductitity of a material is measured by a property called the 'K value' which refers to the ability of a material to conduct heat. A low K-value is advantageous for insulating materials, as this means heat energy cannot easily pass through. Traditional single pane glass has an average K value of 0.96 whereas our Acrylic and Polycarbonate sheets have a K value between 0.19 and 0.21 which demonstrates why these materials provide superior insulation, in addition to being cheaper and easier to install and maintain.
Installation
Fitting secondary glazing is a fast and simple DIY process. You simply attach the polycarbonate panels to your existing windows or window frames using a magnetic adhesive tape kit. The kit, which must be purchased seperately (see Magnetic & Steel Tape) has two parts, a steel tape which is applied directly to your window or window frame, and a magnetic tape which is applied to the clear polycarbonate panel. You can alternatively choose to have holes drilled in the panel, however you will need to ensure that a foam tape is also fitted to all edges of the panel to ensure there are no gaps that allow the heat to escape.
Important fitting information
- When fitting panels larger than 1.4m x 1m, you must use the 19mm wide tape, as the panels may be too heavy for the 12.7mm wide tape.
- Magnetic tape is not suitable for environments that may experience gusts of wind or strong breezes, instead consider using another fixing method such as screws.
- The tape should be applied to the panels on all four sides without any gaps.
- Ensure that all surfaces of the magnetic tape are completely dry and free from contaminants.
- It is advisable to wear gloves while fitting to avoid cuts from the edges and corners of the polycarbonate.
Sound reduction
In addition to reducing heat loss polycarbonate secondary glazing also reduces noise levels. Polycarbonate sheet offers sound loss characteristics comparable to glass.
Flexibility
Polycarbonate secondary glazing is ideal for all homes that have single glazing, period properties with sash windows, buildings where renovations are not possible, and schools, offices and large areas that are difficult to heat adequately during the colder months.
Cut to size
Ordering polycarbonate glazing panels is easy, simply measure up and order the exact sizes required ready for fitting. Ordering cut to size is not only convenient but reduces waste material keeping costs down.
Please note: This product does not include the magnetic tape which must be purchased seperately.
Stock sheet sizes
3050mm x 2050mm, 2050mm x 1520mm, 2440mm x 1220mm
Minimum panel size
50mm x 50mm
Maximum panel size
2000mm x 1000mm
Relative density
1.2 g/cm³
Manufacturers thickness tolerance
+/- 5 % (e.g. 5mm polycarbonate sheet could vary from 4.75mm to 5.25mm)
Cutting tolerance
+/- 1mm
Material protection
Protective film on both sides
Fire rating
UK Class 1
Service temperature
-50 to +100°c
Vicat softening temperature
150°c
Water absorption
0.15%
Recyclable
Yes
Recycled content
30%
Data sheets
We offer fast, tracked air delivery across North America, using recognised couriers including DHL.
Not shipping to North America? Visit our UK store or Europe store for delivery to your region.
Where we deliver
We currently deliver to the United States and Canada.
How delivery is priced
Delivery is priced by the size and weight of your panel, based on the band your order falls into:
| Panel size (up to) | Weight (up to) | Delivery |
|---|---|---|
| 500mm × 500mm | 10kg | $59 |
| 750mm × 750mm | 15kg | $79 |
| 1000mm × 1000mm | 25kg | $109 |
Orders that exceed the weight allowance for their band are charged $2.50 per additional kg.
Delivery times
Delivery is by air and takes 5–7 working days.
Customs, import taxes and duties
Our checkout meets US and Canadian customs and import requirements in full, so there are no surprises once your order ships. All orders are sent Delivered Duty Paid (DDP) — we collect and pay all import taxes and duties on your behalf, so your order arrives at your door with nothing more to pay.
Can I collect my order from Simply Plastics?
Yes, of course. Orders can be collected from our premises in Colchester, Essex. At the final stage of the checkout process there is a delivery option labelled "Collection/pickup" which is free. Once your order is complete, you will be notified by email along with our address and collection times.
I need my order urgently, can I pay for faster shipping?
Yes. We offer an express delivery service which aims to deliver all orders in 1-3 working days. Orders are delivered by a recognised courier company and may require a signature on delivery.
Do you have a minimum order charge or small order fee?
This is a question we are asked fairly regularly due to the previlance of either a minimum order charge or small order fee within the industry.
At Simply Plastics our approach has always been to treat all orders equally, small or large. We want all customers, new and existing, to be able to place orders with us confident that they are only paying for the products and materials that they require. We therefore do not have a minimum order charge or small order fee.
How can I calculate the weight of a Polycarbonate Panel?
All of the different types of plastics that are available on our website, whether they be a panel, a disc, tube or rod, show the weight of the piece you require once you have entered your dimensions, shown in grams or kg.

The weight of any plastic can be calculated using the simple formula: Weight = Volume x Density
Read our blog post on how to calculate the weight of a variety of different plastics covering panels, discs, road and tube.
{{content.title}}
{{product.title}}
photo_size_select_smallCut to size
{{product.colours}} Colours
{{product.description}}
{{product.fromText}}
{{product.fromText}}
Packing: {{product.packingDiagnostics.dimensions}} ({{product.packingDiagnostics.variants.length}})
| {{variant.name}} | {{variant.dimensions}} | {{variant.weight}} |