Redstone Clima Redboard Pro (previously known as Calsitherm Climate Board) is a lime-based internal thermal insulation. It can effectively manage higher levels of dampness and provides excellent mould resistance, particularly in areas with high humidity or moisture exposure. This product effectively manages condensation, significantly reduces the potential for mould growth, and improves indoor air quality in buildings combined with an effective ventilation strategy.
Redstone Clima Redboard Pro offers excellent breathability due to its very low moisture vapour diffusion resistance. It is also highly hygroscopic allowing it to absorb excess humidity and is extremely capillary active to allow moisture to pass through the material without building up. These material properties help avoid common problems related to dampness. It functions by absorbing excess moisture and releasing it when the air becomes drier, which helps maintain a balanced indoor climate that lowers the risk of mould growth and structural damage from ongoing dampness. This moisture-regulating feature keeps your building dry, comfortable, and protected from the negative impacts of dampness. This approach works well in places such as basements, bathrooms, kitchens, and any area that tends to be affected by humidity or condensation. Calsitherm's natural composition ensures that once installed, it will not release VOCs, formaldehyde or other harmful chemicals into the air, promoting a healthier living environment.
Redstone Clima Redboard Pro combines excellent moisture regulation with outstanding durability, providing a reliable solution for controlling damp and mould in both new constructions and existing buildings. It’s a crucial material for keeping buildings healthy and comfortable, ensuring a dry and healthy living environment for years to come.
As with any Internal Wall Insulation system, the wall must have any sources of water infiltration from ground sources, poor pointing, water leaks or poorly maintained gutters/pipes etc. made good before installing the insulation. Refer to our guidance document: “How to prepare walls for Internal Wall Insulation” for full details.
About Redstone Clima Redboard Pro
Redstone Clima Redboard Pro is designed to combat damp and mould through its high breathability and its ability to transport moisture quickly via capillary action. Its unique properties allow moisture to be absorbed and released, preventing moisture buildup and condensation from accumulating on walls and surfaces. As a lime-based alkaline insulation material, it helps inhibit mould formation to avoid any health problems and damage to building materials.
Whether used in renovations or new builds, Redstone Clima Redboard Pro is ideal for moisture-prone areas like bathrooms, kitchens, and basements, where synthetic impermeable insulation methods may fail. It is also well-suited to ground floor walls in areas where seasonal weather patterns can cause unavoidable variations in moisture levels, helping to regulate moisture over time and prevent potential problems. Made from natural, environmentally friendly materials, it contributes to better air quality. Once installed, it does not release harmful chemicals into the air, making it perfect for eco-conscious building projects.
As with any Internal Wall Insulation system, the wall must have any sources of water infiltration from ground sources, poor pointing, water leaks or poorly maintained gutters/pipes etc made good before installing the insulation. Refer to our guidance document: “How to prepare walls for Internal Wall Insulation” for full details.
Redstone Clima Redboard Pro offers superior damp and mould management, regulating moisture, preventing condensation, and reducing the risk of mould growth. Its breathable, capillary active nature creates a dry, comfortable indoor environment, ideal for kitchens, basements, and bathrooms. The material’s eco-friendly, non-toxic composition ensures healthier air quality, contributing to a better living space. Durable and long-lasting, Redstone Clima Redboard Pro protects buildings from damp and mould-related damage, ensuring comfort and structural integrity for years.
Key Benefits
Prevents mould growth
Regulates moisture and reduces condensation
Highly breathable material
Is highly capillary active, can absorb and release moisture to maintain balanced humidity
Improved air quality
Natural, eco-friendly composition is toxic to mould, promoting healthier air quality
Ideal for moisture-prone areas
Great performance on ground floor walls prone to moisture, kitchens, basements, and bathrooms
Durable and long-lasting
Protects buildings from damp and mould-related damage
More comfortable indoor climate
Helps maintaining a dry and healthy environment
Diasen Diathonite Thermactive.037 Insulating Levelling Plaster
Redstone Clima Redboard Pro Adhesive mortar for use on Clima Redboard Pro
Redstone Clima Redboard Pro Interior calcium silicate thermal insulation, mould prevention and moisture control board
Redstone Smooth Finishing Plaster (Luno) with embedded mesh
Auro Natural Breatheable paint
Solid Brick Walls Exposed to High Humidity and Historical Mould (Mould Control System)
Redstone Clima Redboard Pro offers a practical solution for walls that face high humidity and have a history of condensation and mould issues. This system controls moisture by transporting excess water to the surface where it can harmlessly evaporate, lowering the chances of damp areas. The material's excellent breathability takes in moisture when humidity increases and lets it out when the air dries, keeping the internal environment balanced and comfortable. With its highly alkaline formula, Clima Redboard Pro is also toxic to mould, inhibiting growth. This system is ideal for homes or buildings that have previously suffered from condensation and mould, creating a breathable, mould-resistant insulated wall that improves air quality and promotes a healthier living space.
After any existing mould on the wall has been removed or treated with a mould cleaner such as Auro Mould Eliminator 412, the wall is levelled with Diasen Diathonite Thermactive.037 insulating plaster. The Clima Redboard Pro boards are tiled on to the wall with Redstone Adhesive Mortar. Redstone smooth finishing plaster (Luno) with embedded reinforcing mesh then goes on top. To complete the finish, a natural breathable paint from Auro is applied.
- Diasen Diathonite Thermactive.037 lime and cork based insulating plaster. Used as a levelling plaster.
- Redstone adhesive mortar. Secures the boards to the levelled wall.
- Redstone Clima Redboard Pro internal wall insulation
- Redstone smooth finishing plaster (Luno) with embedded reinforcing mesh
- Auro Natural Breathable Paint
Diasen Diathonite Thermactive.037 Insulating Levelling Plaster
Redstone Clima Redboard Pro Adhesive mortar for use on Clima Redboard Pro
Redstone Clima Redboard Pro Interior calcium silicate thermal insulation, mould prevention and moisture control board
Redstone Clima Redboard Pro Smooth Finishing Plaster (Luno) with Embedded Mesh
Auro Natural Breathable Paint
Solid Stone Walls Exposed to High Humidity and Historical Mould (Mould Control System)
Redstone Clima Redboard Pro offers a practical solution for walls that face high humidity and have a history of condensation and mould issues. This system controls moisture by transporting excess water to the surface where it can harmlessly evaporate, lowering the chances of damp areas. The material's excellent breathability takes in moisture when humidity increases and lets it out when the air dries, keeping the internal environment balanced and comfortable. With its highly alkaline formula, Clima Redboard Pro is also toxic to mould, inhibiting growth. This system is ideal for homes or buildings that have previously suffered from condensation and mould, creating a breathable, mould-resistant insulated wall that improves air quality and promotes a healthier living space.
After any existing mould on the wall has been removed or treated with a mould cleaner such as Auro Mould Eliminator 412, the wall is levelled with Diasen Diathonite Thermactive.037 insulating plaster. The Clima Redboard Pro boards are tiled on to the wall with Redstone Adhesive Mortar. Redstone smooth finishing plaster (Luno) with embedded reinforcing mesh then goes on top. To complete the finish, a natural breathable paint from Auro is applied.
- Diasen Diathonite Thermactive.037 lime and cork based insulating plaster. Used as a leveling plaster.
- Redstone adhesive mortar. Secures the boards to the levelled wall.
- Redstone Clima Redboard Pro internal wall insulation
- Redstone smooth finishing plaster (Luno) with embedded reinforcing mesh
- Auro Natural Breathable Paint
| Wall Type | Diathonite Levelling Plaster (mm) | Redboard Pro Thickness (mm) | U-value (W/m²K) |
|---|---|---|---|
| 220mm (brick) | ...... | ...... | 2.19* |
| 220mm (brick) | 20mm | 30 | 0.66 |
| 220mm (brick) | 20mm | 50 | 0.54 |
| 220mm (brick) | 20mm | 80 | 0.42 |
| 220mm (brick) | 20mm | 100 | 0.37 |
| Wall Type | Diathonite Levelling Plaster (mm) | Redboard Pro Thickness (mm) | U-value (W/m²K) |
|---|---|---|---|
500mm (stone) | ...... | ...... | 2.38* |
500mm (stone) | 30mm | 30 | 0.57 |
500mm (stone) | 30mm | 50 | 0.48 |
500mm (stone) | 30mm | 80 | 0.38 |
500mm (stone) | 30mm | 100 | 0.34 |
* uninsulated wall
Diasen Diathonite Thermactive.037 Insulating Levelling Plaster
Redstone Clima Redboard Pro Adhesive mortar for use on Clima Redboard Pro
Redstone Clima Redboard Pro Interior calcium silicate thermal insulation, mould prevention and moisture control board
Redstone Smooth Finishing Plaster (Luno) with embedded mesh
Auro Natural Breathable Paint
Solid Brick Walls with Residual Moisture Content
For walls that have previously suffered from dampness and now have high residual moisture content, Redstone Clima Redboard Pro offers an ideal solution. These walls often take years to dry out completely after remedial work is complete, and traditional insulation systems may not be effective. The highly capillary-active Redstone Clima Redboard Pro draws moisture out of the wall quickly to allow it to harmlessly evaporate on the surface preventing long-term damage. This system continues to regulate moisture for the long term, helping maintain a healthy indoor climate while improving energy efficiency.
The wall is first levelled with Diasen Diathonite Thermactive.037 insulating plaster. The Clima Redboard Pro boards are then tiled on to the wall with Redstone Adhesive Mortar. Redstone smooth finishing plaster (Luno) with embedded reinforcing mesh then goes on top. To complete the finish, a natural breathable paint from Auro is applied.
- Diasen Diathonite Thermactive.037 lime and cork based insulating plaster. Used as a leveling plaster.
- Redstone adhesive mortar. Secures the boards to the levelled wall.
- Redstone Clima Redboard Pro internal wall insulation
- Redstone smooth finishing plaster (Luno) with embedded reinforcing mesh
- Auro Natural Breathable Paint
Diasen Diathonite Thermactive.037 Insulating Levelling Plaster
Redstone Clima Redboard Pro Adhesive mortar for use on Clima Redboard Pro
Redstone Clima Redboard Pro Interior calcium silicate thermal insulation, mould prevention and moisture control board
Redstone Clima Redboard Pro Smooth Finishing Plaster (Luno) with embedded mesh
Auro Natural Breathable Paint
Solid Stone Walls with Residual Moisture Content
For walls that have previously suffered from dampness and now have high residual moisture content, Redstone Clima Redboard Pro offers an ideal solution. These walls often take years to dry out completely after remedial work is complete, and traditional insulation systems may not be effective. The highly capillary-active Redstone Clima Redboard Pro draws moisture out of the wall quickly to allow it to harmlessly evaporate on the surface preventing long-term damage. This system continues to regulate moisture for the long term, helping maintain a healthy indoor climate while improving energy efficiency.
The wall is first levelled with Diasen Diathonite Thermactive.037 insulating plaster. The Clima Redboard Pro boards are then tiled on to the wall with Redstone Adhesive Mortar. Redstone smooth finishing plaster (Luno) with embedded reinforcing mesh then goes on top. To complete the finish, a natural breathable paint from Auro is applied.
- Diasen Diathonite Thermactive.037 lime and cork based insulating plaster. Used as a leveling plaster.
- Redstone Clima Redboard Pro Smooth Finishing Plaster (Luno). Secures the boards to the levelled wall.
- Redstone Clima Redboard Pro internal wall insulation
- Redstone Clima Redboard Pro Smooth Finishing Plaster (Luno) with embedded reinforcing mesh
- Auro Natural Breathable Paint
| Wall Type | Diathonite Levelling Plaster (mm) | Redboard Pro Thickness (mm) | U-value (W/m²K) |
|---|---|---|---|
| 220mm (brick) | ...... | ...... | 2.19* |
| 220mm (brick) | 20mm | 30 | 0.66 |
| 220mm (brick) | 20mm | 50 | 0.54 |
| 220mm (brick) | 20mm | 80 | 0.42 |
| 220mm (brick) | 20mm | 100 | 0.37 |
| Wall Type | Diathonite Levelling Plaster (mm) | Redboard Pro Thickness (mm) | U-value (W/m²K) |
|---|---|---|---|
500mm (stone) | ...... | ...... | 2.38* |
500mm (stone) | 30mm | 30 | 0.57 |
500mm (stone) | 30mm | 50 | 0.48 |
500mm (stone) | 30mm | 80 | 0.38 |
500mm (stone) | 30mm | 100 | 0.34 |
* uninsulated wall
Ground-Floor Walls Partially Below Ground Level
For ground-floor walls partially below ground level, exposed to external soil, Redstone Clima Redboard Pro offers an effective moisture control system. These walls are often prone to moisture ingress from external ground conditions, leading to rising damp issues. The system allows moisture to evaporate naturally, preventing it from accumulating within the wall structure. By creating a breathable, moisture-regulating insulated wall, Redstone Clima Redboard Pro ensures the building’s longevity and health, protecting against damp-related issues and mould development.
If there is no existing tanking system installed internally or externally, it is essential to control moisture ingress from the below-ground wall prior to installation of Clima Redboard Pro. Diasen Watstop, an epoxy cement-based waterproof tanking plaster can be installed to the interior masonry wall to prevent moisture ingress. For maximum coverage and consistent application, it is recommended to level the wall with Diasen Regularisation restoration plaster before applying the Watstop. Watstop is applied 50cm above the damp area, for example if the exterior ground level is at 20cm above the finished floor and the damp area extends to 70cm, Watstop should be applied up to 1.2m.
If the wall is seeping water or the moisture content of the wall is greater than 4%, Watstop is not suitable. Please contact our technical team for advice.
Basements Below Ground Level
For basements below ground level, in direct contact with soil, Redstone Clima Redboard Pro offers a robust solution to combat moisture issues. Basements are vulnerable to high humidity and water infiltration, which can lead to significant damp and mould problems. The advanced moisture-regulating properties of Redstone Clima Redboard Pro prevent water from accumulating in the walls, creating a breathable environment that promotes evaporation and prevents condensation. By maintaining a dry, healthy indoor climate, this system protects basement walls from external soil moisture, ensuring long-term protection.
If there is no existing tanking system installed internally or externally, it is essential to control moisture ingress from below-ground walls prior to installation of Clima Redboard Pro. Diasen Watstop, an epoxy cement-based waterproof tanking plaster can be installed to the interior masonry wall to prevent moisture ingress. For maximum coverage and consistent application, it is recommended to level the wall with Diasen Regularisation restoration plaster before applying the Watstop. Watstop is applied 50cm above the damp area, for example if the exterior ground level is at 1m above the finished floor and the damp area extends to 1.5m, Watstop should be applied up to 2m.
If the wall is seeping water or the moisture content of the wall is greater than 4%, Watstop is not suitable. Please contact our technical team for advice.
