Order Thermal,
PolyWall - Polystyrene Insulation Boards, For
Cavity Wall Insulation
Nationally & For
Export

Boost energy efficiency the smart way—our PolyWall, polystyrene cavity wall insulation boards deliver high thermal performance, moisture resistance, and long-lasting durability. Lightweight and easy to install, they’re the cost-effective choice for warmer, more efficient buildings.

Get A Competitive, National, Quote Now!

Order Lead Time:

Generally 3 to 5 working days excluding weekends and public holidays. If you need it faster, please let us know so we can assist.

Retail & Bulk Buyer Benefits:

- Enjoy Bulk Discounts
- Competitive National Prices
- Free Quick Quotes
- Free Expert Advice
- National Cutting Capability
- Fast Cutting & Delivery

PolyWall - Polystyrene Wall Insulation Boards

Product Overview

PolyWall polystyrene insulation boards are SANS 10400-XA compliant and designed for cavity walls. With a thermal value of 1 or more, architects specify PolyWall to meet building standards. Made from medium-density EPS, it offers excellent insulation at a more cost-effective rate than XPS. Lightweight, easy to install, and supplied nationwide from our trusted network.

Key Product Benefits

- SANS 10400-XA compliant
- Thermal value of 1+
- Medium-density = cost saving
- Ideal for cavity wall use
- Easy to handle and install
- Nationwide delivery available

Why Buy From Us?

- Reliable, On-Time Delivery

- Guaranteed Product Quality

- Local Compliance Assured

- Simple, Efficient Ordering

- Excellent Communication

- Trusted by Professionals

- Technical Support Available

Where Do We Manufacture This?

Johannesburg
Cape Town
Durban
Port Elizabeth

Do We Keep Stock?

We keep some stock in our Johannesburg Warehouse. Check with our sales team.

In Cape Town, Durban and Port Elizabeth, we cut our polystyrene on order.

Where Will You Deliver This To?

Locally, Nationally & Internationally depending on the size of the order.

We won't deliver small orders long distances, but call us to enquire.

Can I Collect This Product?

We only offer collection from our Strydompark warehouse in Randburg, Gauteng.

We don't offer collection in:

Cape Town
Durban
Port Elizabeth

Current Lead Times

Generally 3 to 5 working days excluding weekends and public holidays. If you need it faster, please let us know so we can assist.

Polystyrene Insulation Density

We manufacture this product in Medium Density (15 kg/m3)

Polystyrene Insulation Dimensions

Our standard and most cost effective polystyrene sheets & blocks sizes are:

10mm x 1200mm x 2500mm
15mm x 1200mm x 2500mm
20mm x 1200mm x 2500mm
25mm x 1200mm x 2500mm
30mm x 1200mm x 2500mm
35mm x 1200mm x 2500mm
40mm x 1200mm x 2500mm
50mm x 1200mm x 2500mm
75mm x 1200mm x 2500mm
100mm x 1200mm x 2500mm
120mm x 1200mm x 2500mm
150mm x 1200mm x 2500mm
200mm x 1200mm x 2500mm
300mm x 1200mm x 2500mm
600mm x 1200mm x 2500mm

We can cut polystyrene sheets & blocks in any size that is less than 600mm high, 1220mm wide and 6000mm long.

Please request a quote for custom-cut sizes.

Why Choose

Us?

+17500

National Polystyrene Orders Delivered Since

2016

+37254

Dedicated Facebook Followers

Highest & Most Google Reviewed National Polystyrene Supplier In South Africa

About
About Us
Polystyrene Product Company (Pty) Ltd, established in 2016, is South Africa’s trusted name in bulk polystyrene solutions — proudly delivering premium-quality products nationwide and across our borders.

Based in Strydompark, Randburg, Johannesburg, we manufacture, cut, and distribute specialised polystyrene products tailored for a wide range of industries — including construction, packaging, HVAC, refrigeration, marine, medical, retail, events, signage, and the creative sector.

With a strong reputation for reliability, fast turnaround times, and expert support, we simplify bulk polystyrene supply for businesses of every scale.
Retail, Wholesale & Bulk
Retail Offering
We welcome walk-in customers, DIYers, and small businesses with flexible, no-minimum-order access to our full range of polystyrene products.

Whether you need insulation sheets, packaging material, or creative foam cutouts — our retail team makes it simple and affordable.

Benefits:

Cut-to-size while you wait

Friendly expert advice

Ideal for one-off or small-scale needs

Fast, convenient service

Bulk Offering
As a national bulk supplier, we support large-scale orders for developers, contractors, architects, fabricators, and industrial clients.

Whether you need high-density void formers, insulation boards, or specialized polystyrene components — we manufacture and deliver at volume.

Key advantages:

Nationwide delivery

Factory-direct manufacturing

Consistent supply for large projects

Application-specific density grades

Wholesale Offering
Resellers, hardware stores, ceiling installers, and fabrication companies benefit from our tailored wholesale pricing model — structured to support healthy resale margins and consistent supply.

Wholesale perks:

Discounted tiered pricing

Priority manufacturing slots

Flexible account terms (on approval)
Supply & Delivery
National Distribution & Service
With a robust logistics network and strategically located manufacturing and distribution hubs in Johannesburg, Cape Town, Durban, Port Elizabeth, East London, and beyond, Polystyrene Product Company has the infrastructure and operational capacity to deliver large volumes of EPS products anywhere in South Africa and abroad— efficiently and on time.

Whether supplying remote construction sites, urban developments, or high-spec commercial projects, we make national reach feel local.

We take pride in making things happen — turning complex requirements into practical solutions through responsive communication, technical expertise, and a strong “can-do” approach.

From urgent project turnarounds to tailored product fabrication, our team is committed to simplifying the polystyrene supply chain and delivering results that exceed expectations.
Notable Projects
Recent Notable Projects Supplied By Us
Over the years, we’ve proudly supplied polystyrene to more than 17,500 clients across South Africa and neighboring countries — including contractors, developers, architects, retailers, and major infrastructure projects.

Here are just a few examples of recent bulk supply projects that demonstrate our capability and reliability:
New Amazon Head Office CT
Nelson Mandela Children's Hospital (JHB)
Cape Town convention Centre
Manufactured and supplied over 4,000 m³ of high-density polystyrene for insulation and fill requirements, on schedule and in full compliance with engineer specifications.
Delivered over 3,000 m² of 50mm high-density PolyVoid to raise an existing concrete slab by 1 meter, meeting strict safety and building performance criteria.
Supplied 1,400 m² of 120mm extra-high-density EPS roof insulation, ensuring thermal efficiency and structural performance on a high-profile public infrastructure upgrade.
Google Reviews
We Pride Ourselves On Customer Service
Contact Us
Contact Us
Polystyrene Product Company (Pty) Ltd

Head Office

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

VAT Number: 4220273447

CO. Reg Number: 2016/072709/07

National Head Office Number:

011 678 5626

Main Email: sales@polystyrene.co.za