Polystyrene Prices & Online Store | South Africa | Polystyrene.co.za

Get Quick Polystyrene Prices & Order Online

We Make National, Direct, Polystyrene Ordering Simpler, Faster & More Cost-Effective!

Why Polystyrene Product Company (Pty) Ltd?

Fast Ordering Platform

Established Nationally in 2016

Respected Bulk Suppliers

Well Known

Competitively Priced


No Minimum Orders

Highest Google Reviewed Supplier

Over 35000 Facebook Followers

Suppliers To Many Bulk Buyers

Polystyrene Specialists

Technical Experts

High Quality Products

Direct From Factory

General Order Lead Times

Order Lead Time For Cutting & Delivery Is Normally 3 to 7 working days, Excluding Weekends & Public Holidays.

If You Collect Then The Lead Time May Be Less.

Lead Time Starts Once We Have Received Payment In Our Bank Account


Please Call Us If You Need Product Faster So We Can Assist

Online / Offline Payment Options

  • Visa Credit & Debit Cards

  • Mastercard Credit & Debit Cards

  • RCS Store Cards

  • Game Store Cards

  • Cape Union Mart Store Cards

  • Makro Store Cards

  • Builders Warehouse Store Cards

  • CTM Store Cards & More

  • Instant EFT (Online)

  • Request An Invoice & Pay Via EFT

Who Buys Our Polystyrene Products?

Mostly Builders, Large & Medium Sized Construction Companies, Concrete Slab Installers, Ceiling Installers, Cornice Cutters, Insulation Installers & Cold Room Manufacturing Companies.

We Sell A Lot Of Polystyrene To The Creative Design Industry.


We Also Sell Polystyrene Directly To The General Public In South Africa


All Online Prices Exclude VAT.

Enjoy Our Daily National Online Specials!

PolyFloor - Polystyrene Floor Insulation Boards

Our Polyfloor, below concrete floor insulation boards give the thermal R-Values and compressive strength you need. Order Online
In stock
Product Details

Ordering PolyFloor - Concrete Floor Insulation Boards Online Is So Easy!

If you are looking for polystyrene insulation boards for below concrete surface bed slabs then our Polyfloor Insulation Boards are the right option & you can simply order them nationally online here!

Installing polystyrene insulation below your concrete floor slab thermally insulates the concrete floor slab from the ground below and is a building requirement if underfloor heating is going to be installed. There is NO point in paying for electricity to heat the concrete slab and cold ground soil below!

Without a doubt, installing polystyrene insulation below your concrete floor slab really does make a difference in luxury homes & offices.

Not only are our PolyFloor Insulation Boards cost-effective, but you can be sure that they will give you the compressive strength and thermal insulation R-values that you need to meet building regulations in South Africa.

It is important to note that normal density polystyrene will fail in this application, so it is much better to order Polyfloor that is specifically designed for this application than have a hollow sounding slab or even worse have to rip up and replace the entire concrete slab!

Each board is 3m2 so dividing your total insulation area by 3 will give you the number of boards you require.

Our Polyfloor Floor Insulation Boards are locally manufactured and delivered from our factories & depots in :

  • Johannesburg
  • Cape Town
  • Durban
  • East London &
  • Port Elizabeth

Order Collections & Deliveries

When you order online you will have the choice to either collect your polystyrene at our local factory or depot or for us to deliver it directly to you. Please note that our online platform deals with local deliveries around these factories & depots. You may have to call us for deliveries that are further out or simply choose to collect the boards yourself.

Please note that our factories & depots are not walk-in shops. We cut polystyrene and deliver polystyrene from these facilities.

General Lead Time

Lead time is generally 3 to 5 working days excluding weekends & public holidays. Call us if you need product faster!

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.

Thermal Insulation R-Value Requirements:

To get the required thermal insulation R-Value of 1, in terms of South African Building Regulations, you need a minimum board thickness of 40mm but the thicker you go the more insulation you get.

Recommended Thickness:

We recommend 40mm or 50mm PolyFloor Insulation Boards In South Africa to meet the minimum thermal insulation requirement (R-Value of 1) in residential buildings but often clients choose to install thicker boards for more insulation.

Find out more about the thermal values, compressive strength and installation of this product below.

Board Thickness Thermal Insulation (R-Value)
1.143 (Residential Insulation)
50mm 1.429 (Residential Insulation)
75mm 2.145 (Residential Insulation)
100mm 2.857 (Residential Insulation)
120mm 3.429 (Cold Room Insulation)
150mm 4.286 (Cold Room Insulation)
200mm 5.714 (Freezer Room Insulation)
300mm 8.571 (Freezer Room Insulation)
300mm+ Contact Us

PolyFloor Densities & Compressive Strength:

PolyFoor Insulation is only sold in High & Extra High Densities due to the loading and compressive strength requirements of the boards in this applications.

  • In residential applications a high density board can be used.
  • In commercial or Industrial applications and Extra High Density (24kg/m3 to 30kg/m3) must be used.
  • Low and medium density polystyrene will fail in this application.
  • Consult with your local engineer if you are uncertain.

Density Name Nominal Density Compressive Strength
High Density 20 kg/m3 110 KPa @ 10% Compression
Extra High Density 24 kg/m3 to 30 kg/m3 160 to 200 kPa @ 10% Compression

Architect & BOQ Specification

".......mm x 1200mm x 2500mm High Density, Fire Retardant, PolyFloor Surface Bed Insulation By Polystyrene Product Company. Specifically Designed For Below Surface Bed Or Below Concrete Floor Insulation Applications."

How To Install PolyFloor Insulation Boards

  • First the brick foundation walls are built.
  • The soil is then placed and compacted.
  • A DPC plastic layer is them placed on the compacted soil.
  • The polystyrene is then cut and laid tightly on top of the plastic layer.
  • Steel mesh is then placed on top of the polystyrene insulation layer with spacers.
  • The concrete is then poured on top of the polystyrene insulation layer.

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Bulk Buyer & Regular Buyer Quotes


Bulk Buyers or Regular Buyers will most likely qualify for bulk discounted rates based on order volumes. Please Explore Our Product Catalogue Above Before you complete our Product Specific Online Quote Forms below.


Polystyrene Product Company

Johannesburg (Gauteng)

011 678 5626

Cape Town (Western Cape)


021 200 5926

Durban (Kwazulu-Natal)

031 940 7056

East London & PE

087 095 3259

National Sales


Your Trusted Specialists In Bulk Polystyrene For Concrete Floor Insulation, Cavity Wall Insulation, Concrete Roof Insulation, Thermal Ceilings & Void-Former Applications

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: sales@polystyrene.co.za