Remove failed cavity wall insulation and return your house to a dry, mould free home.

Cavity wall insulation removal should only be undertaken by experienced specialists such as LMG Home Improvements, using professional diagnostic techniques and specialist extraction systems.

Resolving damp and moisture-related defects can improve property condition, mortgage suitability, and buyer confidence, which may positively affect property value.

Yes. When undertaken by trained specialists using appropriate equipment, the process is safe and compliant with current building and health standards.

Yes. A professional survey is essential to determine whether cavity wall insulation is causing the issue and whether removal is the correct solution.

LMG Home Improvements provides guarantees on workmanship in line with industry standards. Guarantee terms depend on the scope of works and findings of the survey.

If the insulation is a contributing factor, removal can significantly reduce or eliminate damp problems. A full assessment is required to identify and address all sources of moisture.

Yes. After removal and an appropriate drying period, replacement insulation or alternative energy efficiency measures may be installed if the property is suitable.

Removing defective insulation often improves comfort by eliminating moisture retention and cold bridging. Once the cavity is dry and suitable, alternative insulation solutions can be considered.

Most residential properties can be completed within one to two days, depending on the size of the property, insulation type, and site conditions.

Disruption is minimal. Work is carried out externally, and all access points are repaired to blend with the existing brickwork, render, or wall finish.

Cavity wall insulation is removed by creating controlled access points to the external wall. Small access holes are drilled, and bricks are removed just above the damp proof course (DPC) level to allow full access to the cavity. Compressed air is blown through the cavity to loosen the insulation, which is extracted at exit points at DPC level using an industrial vacuum system. Insulation is also removed below DPC level to prevent future moisture from tracking across insulation between the external and internal wall skins. Once removal is complete, the cavity is inspected, cleared where necessary, and all access points are professionally reinstated to match the existing wall finish.

Most insulation types can be removed, including mineral wool fibre, polystyrene beads, bonded bead systems, and certain foam-based installations, subject to a site inspection.

Common indicators include persistent damp or mould on internal walls, peeling wallpaper or paint, musty odours, cold internal wall surfaces, and moisture issues that continue despite adequate ventilation. A professional survey is required to confirm the cause.

Faulty insulation can result in internal damp patches, mould growth, condensation, cold bridging, reduced energy efficiency, timber decay, corrosion of wall ties, and damage to internal plaster and decorations.

Cavity wall insulation may need to be removed if it has become wet, damaged, displaced, or ineffective. Common causes include rubble or debris left in the cavity during the original construction, which can trap moisture and cause insulation to become sodden. Insulation may also require removal if it was incorrectly installed, leaving voids or uneven coverage within the cavity that allow water to track across to the internal wall leaf. Defects can also occur following window or door replacements, where changes to frames, lintels, or surrounding materials can dislodge insulation or compromise the cavity, leading to damp issues, cold spots, and reduced thermal performance.

Cavity wall insulation removal is the process of safely extracting insulation materials from the cavity between external walls. This is typically required when insulation has become damp, damaged, poorly installed, or is contributing to property defects such as condensation, mould, or penetrating damp.