Extruded Polystyrene is a closed cell polystyrene rigid foam board, with high compressive strength and excellent long-term thermal resistance performance, due to its inherent resistance to moisture transfer. It is produced on a continuous, fully automated extrusion process. In South Africa, it is manufactured in a single density range, suitable for most local applications.
Boards are available in various lengths (from 1800mm to 8m) and thicknesses (30mm, 40mm, 50mm, 80mm) to suit most residential, commercial, agricultural and industrial thermal insulation requirements, including under floor slab, cavity wall, over purlin and rafter, inverted roof and insulated ceiling applications. Polystyrene will deteriorate if continually exposed to ultra violet radiation, and will dissolve in solvents. Compatible with all water-based adhesives and paints.
XPS Sheets
XPS Sheets cut to length with a max length of 8000mm and a standard width of 600mm wide.
XPS Sheets lengths:
- Standard board lengths: 1,80m / 2,10m / 2,40m / 2,70m / 3,00m / 3,30m / 3,60m / 4,00m / 4,20m / 4,80m / 5,40m / 6,00m / 6,60m / 7,20m / 8,00m.
- The longest board we can manufacture: 8000mm.
- Length tolerance is ±5mm.
Applications
XPS Sheets are used in the following installations for ceilings
- Nail Up
- Inverted Roof
- Between Truss
- Over Purlin
XPS Sheets can also be used as:
- Ground Slab (under surface bed)
- Cavity Wall
- Inverted Roof
Features and Benefits
- Durable and long-lasting
- Lightweight for easy application
- Strong and sturdy for long-lasting applications
- Weather resistant
- Low water absorption
- Acoustic benefits
- Provides thermal insulation
- CFC free
- Complies with Building Standards
Pricing (ex VAT) | Square Meter Price
| 30mm | 40mm | 50mm |
| R125,00 | R166,25 | R207,50 |
- All Boards are tongue and groove
- All prices are ex VAT and per square meter.
- Boards price based on standard boards lengths, and 600mm wide
- Boards prices include Bevel Edge or Pine Finish
- Please contact Thermaboards for pricing on Glue and clips
- ThermaBoards can deliver nationwide for you at a standard courier cost
- Boards Lengths: 1,80m / 2,10m / 2,40m / 2,70m / 3,00m / 3,30m / 3,60m / 4,00m / 4,20m / 4,80m / 5,40m / 6,00m / 6,60m / 7,20m / 8,00m
- All prices are ex VAT
XPS Insulation Board Properties & R-Values
| Standard Thickness | R-Value |
| 30mm | 1.00m².K/W |
| 40mm | 1.33m².K/W |
| 50mm | 1.67m².K/W |
| 80mm* | 2.67m².K/W |
Insulation Board Properties:
- Density = 35-37kg/m³
- Compressive Strength = 310-360 kpa
- Water Absorption = 0.5% by volume
- Coefficient of Linear Thermal Expansion = 0.049mm per m per °C
- Dimensional stability = <1.0%
- Thermal Conductivity = 0.030W/mK
- Combustibility and Flame Spread = B/B1/2/H
Available Board Profiles
- Pine Tongue and Groove
- Smooth Bevel Tongue and Groove
Smooth straight and smooth tongue & groove only available on special order.
XPS – Collection Options
For all your XPS Ceiling Boards, we have the following collection options available nationwide:
- Cape Town
- Centurion
- Durban
- George
- Gqeberha
- Nelspruit
