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Leading National Suppliers Of Polystyrene Sheets, Ceilings & Insulation In South Africa.

PolyWall - Polystyrene Insulation Boards For Cavity Walls

PolyWall - 1200mm x 2500mm (3m2) - Cavity Wall Insulation Boards are cost-effective boards for cavity wall insulation.
In stock
Product Details
Board Size (m2): 3m2
Brand: PolyWall
Product Type: Expanded Polystyrene Insulation
Availability: Delivered Nationally In South Africa & For Exprot
Estimated Lead Time: Currently 3 to 7 working days excluding weekends & public holidays
Fire Rating: B1
Applications: Cavity Wall Insulation
Joining Mechanism: Butt Joint
Standard Board Width (mm): 1200

Order PolyWall - Medium-Density Polystyrene Cavity Wall Insulation Boards

Currently On Special

This is our online retail platform and if you are a bulk buyer then it may be better to request a bulk quote since our polystyrene prices vary based on volume.

We are currently running a massive national online special on this product!

Insulation of the perimeter walls of buildings is extremely important and PolyWall, Medium Density, Fire-Retardant, Polystyrene, Cavity Wall Insulation Boards are certainly a very cost-effective product to use in brick wall cavity insulation applications.

In terms of South African building regulations, to get the required thermal insulation R-Value of 1, you need a minimum thickness of 40. The thicker you go the more insulation your get.

Each board is 3m2 so you will need to divide the total wall insulation area by 3 to get the quantity of boards you require.

Best of all is that you can simply order these boards nationally online for collection or delivery from any of our national distribution centres located in:

  • Strydompark in Gauteng
  • Philippi in Western Cape
  • Clairwood in Kwazulu-Natal
  • Wilsonia in East London or
  • Neave Industrial in Port Elizabeth

In fact, there is no faster or easier way to order polystyrene wall insulation nationally online in South Africa.

You will probably want to order these boards with our PolyFloor Concrete Floor Insulation Boards because generally these get used in quick succession.

Order lead time is generally 3 to 7 working days for cutting and delivery, once payment reflects in our bank account. This lead time excludes public holidays and weekends. If you need product faster please call us so that we can try and assist.

Our national online ordering platform is designed for busy building contractors, property developers, architects, quantity surveyors and home owners. There really is no easier or faster way to order this product nationally online in South Africa.

Save Time & Money & Simply Order Your PolyWall Insulation Nationally Online Today!

Order Collections & Deliveries

Please note that our national distribution centres are not walk-in shops. They are industrial distribution centres from which you will be able to collect your order or from which we will deliver your order.

Our online ordering platform offers local deliveries from these distribution centres so if your project is far from these locations then you will have to collect your order from the distribution centre closest to you.

For big orders we will deliver nationally and across border!

Board Prices

The prices displayed are board prices excluding VAT.

Online & Offline Payment Methods

Our Payfast Secure Encrypted Online Payment Gateway allows our customers to pay directly online using any of the following cards or options:

  • Visa Credit Cards & Debit Cards
  • Mastercard Credit Cards & Debit Cards
  • Makro Store Cards
  • Builders Warehouse Store Cards
  • Game Store Cards
  • Cape Union Mart Store Cards
  • CTM Store Cards
  • RCS Store Cards & More
  • Instant Online EFT Payment

Alternatively you can order online and request an invoice for normal EFT payment.

What is Perimeter Wall Cavity Wall Insulation?

  • Cavity Wall Insulation is the insulation layer that is placed between the inner and outer brick layers of the outer perimeter walls of a building.
  • This insulation layer significantly reduces the transfer of heat and cold through the external perimeter walls of buildings.
  • In summer the sun-facing exterior walls get hot and this heat is kept out of the living space by the cavity wall insulation.
  • In winter this cavity wall insulation keeps the cold out.
  • Cavity wall insulation significantly reduces the energy consumption of such HVAC systems use to keep buildings at room temperature.

Architect & BOQ Specification

" x 1200mm x 2500mm Medium Density, Fire Retardant, PolyWall Cavity Wall Insulation Boards By Polystyrene Product Company. Specifically Designed For Cavity Wall Insulation Applications.

Per m2 Prices

If you are looking for quick per m2 prices, then just divide the board price by 3 since each board is 3m2.

PolyWall Thicknesses & Thermal Insulation R-Values:

Board Thickness Thermal Insulation (R-Value)

40mm 1.143 (Recommended)
50mm 1.429 (Recommended)
75mm 2.145
100mm 2.857
120mm 3.429
150mm 4.286
200mm 5.714
300mm 8.571

Order Process:

  • First decide on the thickness you want. (The thicker the boards, the more insulation)
  • Add the boards and quantities you want to you order.
  • Select the collection & delivery options
  • Pay for your order online or submit your order for review.
  • Fast & Easy!

About Polystyrene Product Company (Pty) Ltd

Polystyrene Product Company, established nationally in South Africa in 2016, is a well known & respected bulk national supplier of polystyrene sheets, blocks, insulation, extruded polystyrene ceilings & void-formers in South Africa & for export.

Since 2016, we have supplied polystyrene to over 14000 customers nationally in South Africa, Botswana, Mozambique, Zambia, Zimbabwe & Mauritius. We have also supplied bulk polystyrene to many of the biggest construction projects in South Africa.

We are the #1 National Online Ordering Platform For Bulk Polystyrene In South Africa, making it easier and faster for architects, builders, bulk buyers & the general public to order polystyrene online in SA.

CO. Reg Number: 2016/072709/07

VAT Number: 4220273447

National Sales & Logistics (Johannesburg) 011 678 5626

Cape Town Sales 021 200 5926

Durban Sales 031 940 7056

East London & PE Sales 087 095 3259

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Polystyrene Product Company

We Are Leading National Suppliers Of:



Polystyrene Sheets, Blocks, Floor Insulation, Wall Insulation, Ceiling Insulation, Ceiling Boards, Roof Insulation, SANBOARD, POLYBOARD, Lambdaboard, Isotherm &  Slab Construction Products.

We Can Advise & Help You Find The Best Products & Prices On All The Major - Floor, Wall, Ceiling & Concrete Roof Insulations Applications & Products In South Africa.

Contact Us Today!

National Sales & Head Office


Unit 8, Lower Ground Level, Commercial City, Tungsten Rd, Strydompark, Randburg, 2194

VAT Number: 4220273447

CO. Reg Number: 2016/072709/07

Main Office Number:

011 678 5626


Main Email: