The Easy Way To Order Bulk Polystyrene Nationally In South Africa

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


PolyFloor - Polystyrene Insulation / Surface Bed Insulation Boards

Supplied Nationally In South Africa
In stock
Product Details

PolyFloor – Luxury Concrete Floor Insulation


If you are building a new luxury home, office or building then you should really insulate your concrete floor slab before you cast it because it is not expensive, and it keeps your concrete floor slab at ambient room temperature all year round.

A cold floor slab means a cold house and if you plan to install underfloor heating then surface bed insulation is a building requirement in terms of SANS 10400 Part XA.

There is no point in making your underfloor heating system, heat the concrete slab and the cold soil layer below.

Your underfloor heating system should only keep the concrete slab at room temperature, and this does not consume a lot of electricity if this insulation layer is below the concrete slab.

Our PolyFloor, High & Extra-High Density, Fire-Retardant, Polystyrene Surface Bed / Underfloor Heating Insulation Boards are very cost-effective in this application.

Thermal Insulation Values & 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

" 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."

Number Of Boards Required:

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

Ordering Online:

You will probably want to order these boards with our PolyWall Cavity Wall Insulation Boards at the same time because generally these get used in quick succession.

You can order for collection or delivery from 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

We also export these boards.

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.

Payment Methods

  • Credit Card
  • Instant EFT
  • Invoice & EFT
  • Submit For Review

General Order Lead Time:

Order lead time is currently 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.

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.

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

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:

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Let's Explore Your Polystyrene Building Requirements Together!