Improve the thermal performance of your property with internal wall insulation from us. Our range of insulation materials is suitable for a variety of residential, commercial and refurbishment projects, helping builders, contractors and homeowners find products to suit their wall construction and insulation requirements.

Shop Internal Wall Insulation

Internal wall insulation can help reduce heat loss through existing walls, improve indoor comfort and support better energy efficiency. It is particularly relevant when upgrading older properties where insulating the external walls may not be practical or permitted.

Depending on the wall construction and project specification, suitable solutions may include PIR insulation boards, insulated plasterboard, phenolic insulation boards and mineral wool insulation. Insulated plasterboard combines a plasterboard lining with an insulation layer, while separate insulation boards can be installed as part of a suitable internal wall lining system.

Choosing the Right Internal Wall Insulation

The best internal wall insulation depends on the existing wall, available internal space, required thermal performance and proposed installation method. Rigid PIR and phenolic insulation boards offer high thermal resistance for their thickness, while mineral wool may be suitable for compatible framed wall systems.

When comparing products, consider insulation thickness, thermal conductivity (lambda value), declared thermal resistance (R-value), fire performance and compatibility with the specified wall build-up. Also check whether the system requires a vapour control layer, an appropriate airtightness detail or additional moisture protection.

For solid masonry walls, it is important to assess moisture risks and the condition of the existing wall before installation. Internal insulation can change how a wall manages heat and moisture, so the correct system design and installation details are essential.

Internal Wall Insulation for Trade and Refurbishment Projects

At our depots, you can compare insulation materials from established manufacturers and explore options for renovation, retrofit and new construction projects. Check individual product specifications, available thicknesses and pack coverage to help calculate the quantities required.

Whether you are insulating a single room, upgrading a residential property or sourcing materials for a larger building project, our team can help with product enquiries and quantity quotations.

Browse our internal wall insulation range to find suitable materials for your project. For bulk requirements or assistance comparing products, contact our team for a quotation.