Preparation and Assessment: Before beginning the installation, a thorough assessment of the building is necessary. This assessment includes identifying the type of walls (solid or cavity), determining the appropriate insulation material, and checking for any existing issues like dampness or mold.
Surface Preparation: The interior walls must be clean, dry, and free from any loose materials or debris. Any existing dampness or leaks should be addressed before proceeding with the insulation.
Insulation Material Selection: Choose the appropriate insulation material based on the building’s requirements and the available space for installation. Common materials used for internal wall insulation include rigid foam boards, mineral wool, and reflective foil insulation.
Fixing the Insulation: The selected insulation material is then fixed directly onto the interior surface of the external walls. This can be done using adhesive, mechanical fixings, or a combination of both. The insulation boards are usually cut to fit snugly between wall features like windows, doors, and corners.
Insulating Boards: For rigid foam boards, these are typically fixed using a strong adhesive applied to the back of the boards. They are then pressed against the wall and held in place until the adhesive sets. Mechanical fixings, such as plastic wall plugs and screws, may also be used to ensure secure attachment.
Mineral Wool Insulation: For mineral wool or other flexible insulation materials, they are usually fixed using battens (wooden or metal strips) attached to the wall. The insulation material is then placed between the battens, and the finish is applied over the insulation.
Sealing and Vapour Control: Proper sealing of joints and edges is essential to minimize air leakage and maintain the insulation’s effectiveness. Additionally, a vapor control layer may be required to prevent moisture from migrating through the insulation and causing condensation issues.
Reinstating Fixtures: After the insulation is installed, electrical outlets, switches, and other fixtures may need to be repositioned on the insulated wall surface to align with the new thickness.
Internal Finish: Once the insulation is securely in place, a new internal finish is applied over it. This can involve plastering, dry-lining, or other wall coverings, depending on the desired appearance.
Skirting and Architraves: Finally, skirting boards and architraves are reinstalled to cover any gaps and provide a neat finish.
It’s crucial to ensure that the installation is carried out correctly, and any potential issues like condensation and moisture ingress are addressed. Consulting a professional and experienced contractor for internal wall insulation is recommended to ensure a successful and effective installation while minimizing any potential risks to the building’s structure and indoor environment.
