Vapour Resistant Plasterboard Archives

Vapour resistant plasterboard is essentially standard plasterboard with an additional layer of protection. This extra layer is a metallised polyester foil laminated to the back of the board, creating an effective vapour barrier. This barrier limits the diffusion of moisture through the plasterboard, preventing condensation from forming within the wall or ceiling cavity.

Benefits of Vapour Resistant Plasterboard

Moisture Control: The primary benefit of vapour resistant plasterboard is its ability to control moisture. By limiting moisture diffusion, it helps to prevent condensation, dampness, and mould growth, protecting the building structure and creating a healthier indoor environment.
Improved Thermal Performance: Condensation can reduce the effectiveness of insulation. By preventing condensation, it helps to maintain the thermal performance of your insulation, leading to lower energy bills and improved comfort.
Enhanced Durability: Moisture can damage building materials, leading to rot, decay, and structural issues. It helps to protect the building structure from moisture damage, increasing its longevity.
Versatile Applications: It is suitable for use in various applications, including walls, ceilings, and roofs. It is particularly beneficial in areas prone to high humidity, such as bathrooms, kitchens, and utility rooms.
Easy Installation: It can be installed using standard plasterboard fixing methods, making it a convenient solution for new builds and renovations.

When to Use Vapour Resistant Plasterboard

Consider using vapour resistant plasterboard in the following situations:

High Humidity Areas: Bathrooms, kitchens, and utility rooms where moisture levels are typically higher.
External Walls: Protect external walls from moisture penetration, especially in areas with high rainfall or exposure to the elements.
Roofs: Prevent condensation build-up in roof spaces, protecting the roof structure and insulation.
Cold Climates: In colder climates, it can help to prevent condensation on internal walls and ceilings.

Choosing the Right Vapour Resistant Plasterboard

Thickness: Choose the appropriate thickness based on the application and structural requirements.
Fire Rating: Select a board with an appropriate fire rating for your application.
Size: Choose the right board size to minimise waste and suit your installation needs.

Installation Tips

Ensure the metallised foil facing is installed towards the warm side of the construction.
Seal all edges and joints with a suitable vapour-resistant tape or sealant to maintain the integrity of the vapour barrier.
Use appropriate fixings and adhesives designed for vapour resistant plasterboard.