4mm Polycarbonate Glazing Sheets/Panels (4mm Greenhouse Polycarbonate Sheets) for Greenhouses, for sale at great prices

Greenhouse Polycarbonate Sheets for Greenhouses Greenhouse glazing - 4mm polycarbonate sheets are a very popular & simple way of improving your greenhouses to help you grow and produce plants, flowers, and vegetables in your own garden.

Greenhouse glazing is 4mm polycarbonate sheet and they are easier to buy and fit yourself than you think.


Our popular 4mm greenhouse polycarbonate sheets (buy 4mm greenhouse polycarbonate sheets online from £1.92 per sheet) offer a great solution for polycarbonate greenhouse glazing and for your growing needs in your garden with our greenhouse panels for your greenhouse.

Standard greenhouse glazing is 4mm thick, but If you are looking to buy another thickness of the plastic sheet, we have the following options: 10mm polycarbonate sheets, 16mm polycarbonate sheets, 25mm polycarbonate sheets, and 35mm polycarbonate sheets.




The Best Polycarbonate Greenhouse Glazing Sheets

Latest 4mm Polycarbonate Offer


10 pack of premium grade Marlon polycarbonate. 610mm Width. 1220-1230mm Length

+20 white sheet strengtheners 610mm long.

£50.75 ex vat/£60.90 inc vat.

Our Price         : £ 49.13

Price With Vat : £ 58.96

Our Price         : £ 22.16 Ex. VAT

Price With Vat : £ 26.59 Inc. VAT

Our Price         : £ 11.08 Ex. VAT

Price With Vat : £ 13.30 Inc. VAT

Our Price         : £ 46.12 Ex. VAT

Price With Vat : £ 55.34 Inc. VAT

Our Price         : £ 51.93 Ex. VAT

Price With Vat : £ 62.32 Inc. VAT

Our Price         : £ 40.13 Ex. VAT

Price With Vat : £ 48.16 Inc. VAT

Our Price         : £ 57.27 Ex. VAT

Price With Vat : £ 68.72 Inc. VAT

Our Price         : £ 57.27 Ex. VAT

Price With Vat : £ 68.72 Inc. VAT

Our Price         : £ 61.21 Ex. VAT

Price With Vat : £ 73.45 Inc. VAT

Our Price         : £ 46.12 Ex. VAT

Price With Vat : £ 55.34 Inc. VAT

Our Price         : £ 67.70 Ex. VAT

Price With Vat : £ 81.24 Inc. VAT

Our Price         : £ 67.70 Ex. VAT

Price With Vat : £ 81.24 Inc. VAT

Greenhouse Glazing Accessories

We also supply a range of greenhouse glazing and accessories for your garden. A selection of our popular products is below:

Our Price         : £ 3.42 Ex. VAT

Price With Vat : £ 4.10 Inc. VAT


Our Price         : £ 1.80 Ex. VAT

Price With Vat : £ 2.16 Inc. VAT


Our Price         : £ 3.20 Ex. VAT

Price With Vat : £ 3.84 Inc. VAT

Our Price         : £ 28.32 Ex. VAT

Price With Vat : £ 33.98 Inc. VAT

Our Price         : £ 9.10 Ex. VAT

Price With Vat : £ 10.92 Inc. VAT


Our Price         : £ 12.50 Ex. VAT

Price With Vat : £ 15.00 Inc. VAT


Plastic glazing for greenhouses: Are you fond of gardening? Do you regularly keep a check on your garden? If yes, you might have come across times when the climatic conditions were not optimum and your plants may have wilted.

This is why it is important that you come to a position where you can use the climate to work your way. How? You can do this by using a greenhouse. Yes, a greenhouse. Many of you must have heard about the greenhouse effect in your science classes but what exactly it is and how it can help you in your garden...

Here's How:

Great Offers! Greenhouse Polycarbonate Glazing Pack

Our best buy - Ask us about our greenhouse polycarbonate glazing pack for your replacement greenhouse panels by calling 01769 574426. We also offer a range of polycarbonate roofing sheets to complement these products.


That's Not All:

As you are aware, a greenhouse is a structure that contains walls and a roof that is constructed mainly out of a transparent material, so as to maintain a regular temperature within the greenhouse in order to create an area for plants to grow in. This means that if it’s raining or cold outside the greenhouse will be warm and temperate. 


Plastic greenhouses are made of 4mm polycarbonate glazing sheets, a material also known as greenhouse glazing or 4mm greenhouse polycarbonate. A polycarbonate panel is a rigid plastic that functions as a strong greenhouse covering. This material is as transparent as glass. Polycarbonate roofing sheets & panels are available in a single layer as well as in twin wall thicknesses.

These acrylic sheets have air pockets that work as insulators and are excellent light transmitters.

How To Use Greenhouse Glazing Sheets

Greenhouse glazing panelsAdditionally, polycarbonate can be used in a commercial setting as well as in a domestic setting. Thus, the size of a greenhouse can vary according to the available space. These structures range from small sheds to industrialized-sized buildings. Nevertheless, the purpose of a greenhouse does not vary.

The intensities of warmth and heat are given off by the greenhouse might vary but at large the main purpose of a greenhouse remains the same which is to maintain optimum conditions that will aid in plant growth because principally it permits greater control over the plants that are placed in the greenhouse.

The key factors that a greenhouse may control (depending on the technical specification) are:

  • Temperature: shifting/maintaining temperatures according to the requirement of the plants.
  • Levels of light and shade: controls the amount of light transmission.
  • Irrigation
  • The application of fertilizer according to the requirement of the plant.
  • Monitoring the humidity in the atmosphere.


Replacement Greenhouse Glazing Sheets

In essence, a greenhouse controls and manages all the shortcomings that would otherwise inhibit the growth of the plants and it enables you to grow your plants and flowers all year round and polycarbonate is better than glass for greenhouses (source: The Telegraph).

Replacement greenhouse glazing sheets - Ask us about our replacement secondary glazing or polycarbonate roofing sheets, 10mm twin wall polycarbonate sheets, and our range of made to measure secondary glazing.


Replacing Greenhouse Glass with Polycarbonate Greenhouse Panels

If you’re planning to build your own greenhouse so you can grow your favourite plants, then you might be wondering whether to use greenhouse glass or polycarbonate greenhouse panels. You might already have a greenhouse, so considering replacing its glass with polycarbonate greenhouse panels is a great idea.


March 2022 - Continue reading our updated guide about greenhouse panels and greenhouse glazing by clicking here...