Copyright 2025 © LAMBDABOARD®
LAMBDBOARD® is a polyisocyanurate (PIR/Polysio) insulation board made of a continuous laminator. The core contains a blowing agent that ZERO Ozone Depletion (ODP) and Global Warming Potential (GWP) of less than 1.
LAMBDABOARD® is a polyisocyanurate (PIR/Polyiso) thermal insulation board manufactured on a continuous laminator and locally produced in South Africa. LAMBDABOARD® ensures your building meets not only legal requirements but also your expectations with regard to sustainability and energy efficiency over the lifespan of the building. LAMBDABOARD® has a low thermal conductivity that offers optimal thermal performance at minimal thickness.
LAMBDABOARD® comes in a variety of facing options to suit your project requirements. The white mineral facing of the LAMBDABOARD® allows for a paintable surface, whereas the Gun Metal Grey and Obsidian Black Lambdaboard is pre-coloured using pigment into the facing, allowing a coloured finish. Agricultural-facing options are available should your project require a robust application.
LAMBDABOARD® is generically unique, there are no alternatives to LAMBDABOARD®, (PIR/Polyiso) Rigid insulation board.
Reducing hot and cold heat flow throughout the building envelope allowing for stable thermal climate.
LAMBDABOARD® unmatched low thermal conductivity reduces the demand for energy usage to maintain a thermal comfort occupancy.
LAMBDABOARD® Coated Glass Facer (CGF) are paintable without limitations with choice of paint. It is recommended to follow paint suppliers application guidelines. LAMBDABOARD® thermoset nature is resistant to solvents used in construction such as paints, adhesives and alkaline’s.
LAMBDABOARD® has the highest aged R-value per board thickness, which means you need less material to achieve your building's required thermal performance
With LAMBDABOARD®'s spanning capabilities, dimensional stability and lightweight attributes, allows for ease of installation, making it a preferred choice for both DIY enthusiasts and professional installation teams.
LAMBDABOARD® can be retrofitted in an existing building or new build, either between or under purlin. For the structural integrity of the installation support sections are required to suit thickness of board and spanning area.
LAMBDABOARD® is available in a range of thicknesses and lengths to accommodate various installations and thermal performance as per the building code. LAMBDABOARD® can be cut to length depending on project requirements.
All branches maintain an inventory of standard stock lengths and available facing options, ensuring supply for various project requirements.
LAMBDABOARD® is available in a variety of facing options to suit your project requirements.
DECOBOARD® by LAMBDABOARD® is a better tongue-and-groove ceiling and insulation board designed for a range of applications, including horizontal ceilings, over-rafter installations, and between-truss configurations. Combining better thermal performance with design aesthetics, it delivers a better solution for YOUR ceiling designs.
Easy installation, with the concealed clips, with tongue and groove edging.
DECOBOARD® is a Thermoset material, meaning it does not soften, melt, or drip when exposed to flames.
Decorative V-Grooves provide that elegant finish to your ceiling or a unprofiled option (No V-grooves).
Highest R-Value for 30mm. A high R-Value indicates better energy efficiency, reducing heat loss in cold climates or heat gain in hot climates.
Compatible with downlights (220v).
Moisture-resistant wind resistant.
Easy to paint or varnish to match any design and decor.
Providing a clean, modern look.
Retrofitting DECOBOARD® is an easy means to upgrade your ceiling, there is no need to remove the existing ceiling. (consult with one of our sales reps)
High density closed-cell thermosetting polyisocyanurate (Polyiso) foam core integrally bonded to mineral coated facings on both sides. Zero Ozone Depletion Potential (ODP) and <1 Global Warming Potential (GWP). LAMBDAGUARD HD delivers an R-value of 0.45 on a 12.5mm thick board.
Application: A lightweight composite alternative for protective layers/substrate in the building envelope. Typical applications include inverted roof and hot deck installations. Compatible with liquid waterproofing or bitumen/EPDM systems. Can be used as a core in high strength composite panels.
Closed-cell thermosetting polyisocyanurate (Polyiso) foam core integrally bonded to suitable facers on both sides. Zero Ozone Depletion Potential (ODP) and <1 Global Warming Potential (GWP). Available in 25mm to 100mm thick by 1220 wide, offered in various lengths.
Application:Under slab insulation for temperature-controlled environments in the cold chain as per the engineer’s specification for improved thermal performance and limited thermal bridging.
Closed-cell thermosetting polyisocyanurate (Polyiso) foam core, integrally bonded to inorganic coated glass tissue facers on both sides. Zero Ozone Depletion Potential (ODP) and <1 Global Warming Potential (GWP). Available in 25mm to 100mm thickness, 1220 wide, offered in various lengths.
Application:Laminating on a continuous or discontinuous line for thermal insulation panels, where optimal thermal and fire performance is required in the built environment.
Learn more
Figures above based on 3 purlin spacings and more with no longitudinal support.
| Thickness | No Sections | T Section | H Section |
|---|---|---|---|
| 25 mm | <1300 mm | 1400 - 1800 mm | 1900 - 2800 mm |
| 30 mm | <1400 mm | 1500 - 1800 mm | 1900 - 2800 mm |
| 40 mm | <1800 mm | 1900 - 2100 mm | 2200 - 2800 mm |
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Figures above based on 3 purlin spacings and more with no longitudinal support.
| Thickness | No Sections | T Section | H Section |
|---|---|---|---|
| 25 mm | <1300 mm | 1400 - 1800 mm | 1900 - 2800 mm |
| 30 mm | <1400 mm | 1500 - 1800 mm | 1900 - 2800 mm |
| 40 mm | <1800 mm | 1900 - 2100 mm | 2200 - 2800 mm |
Unmatched R-Values per board thickness
LAMBDABOARD® has the highest aged R-value per board thickness, which means you need less material to achieve your building's required thermal performance
| Thickness (mm) | R-value |
|---|---|
| 25 mm | 1.04 |
| 30 mm | 1.25 |
| 35 mm | 1.45 |
| 40 mm | 1.67 |
| 45 mm | 1.88 |
| 50 mm | 2.08 |
| 55 mm | 2.29 |
| 60 mm | 2.5 |
| 65 mm | 2.71 |
| 70 mm | 2.92 |
| 75 mm | 3.13 |
| 80 mm | 3.33 |
| 85 mm | 3.54 |
| 90 mm | 3.75 |
| 95 mm | 3.96 |
| 100 mm | 4.17 |
LAMBDABOARD® can be retrofitted or new build, either between or under purlin . For the structural integrity of the installation support sections are required to suit thickness of board and spanning area.
LAMBDABOARD® comes in a variety of facing options to suit your project requirements. The white mineral facing of the LAMBDABOARD® allows for a paintable surface, where as the Gun Metal Grey and Obsidian Black LAMBDABOARD® is pre-coloured using pigment into the facing allowing a coloured finish. Agricultural facing options are available should your project require a robust application.
LAMBDABOARD'S® solutions skimming and plastering of boards
LAMBDABOARD® can be installed using our concealed clips up to 40mm as an alernative to nailing into the timber battens
RIGIBOND 5 is a two-component filled polyurethane adhesive used to bond LAMBDABOARD®, internal insulation cores and other suitable substrates, including concrete, metal sheeting, bitumen torch on membranes etc. The adhesive does not contain any solvents and is VOC free. This adhesive is suitable for batch mixing. The adhesive can withstand constant exposure to temperatures up to 100 ºC.
TEST THE TEMPERATURE IN YOUR OFFICE
Obtain estimates for your potential energy savings and the projected temperature variances between outdoor and indoor environments. These estimations are based on various configurations of LAMBDABOARD® insulation in a hypothetical scenario without the presence of an HVAC system or roofing insulation. Furthermore, you can anticipate reduction in your energy expenses, stated in Rand per square meter, on an annual basis by incorporating LAMBDABOARD® insulation whilst aligning with the SANS 10400 XA ED2 regulations.
For any guidance, please reach out to our rational design department. Please be aware that the provided information relies on simulated theoretical data generated through the use of Agreement software - BISMAC, in accordance with the relevant South African National Standard.
Lambdaboard Thickness
0 mm
Actual outside temperature
31° C
Calculated inside temperature
Annual energy usage (kWh)
Annual energy savings (kWh)
Rand saving per annum-Eskom rate
Approximately 70% of a building’s heat loss occurs through the roof, highlighting its significance in energy inefficiency. Proper insulation and ventilation are essential to prevent this heat escape, which helps lower heating costs and improve energy efficiency. Addressing roof heat loss can significantly enhance indoor comfort and maintain consistent temperatures.
Lambdaboard is a high-performance thermal insulation solution designed for homes. It helps regulate indoor temperatures, providing energy savings by
Lambdaboard is a high-performance thermal insulation solution designed for homes. It helps regulate indoor temperatures, providing energy savings by
Training Schedule (CPD and Contractors)
Venue: Lord Charles Hotel
Join us in Cape Town for our next CPD event.
Venue: The Arena
Join us in Nelspruit for our next CPD event.
Venue: Lord Charles Hotel
Join us in Nelspruit for our next CPD event.
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