Cavity Wall Insulation Bolton, Northwest & Nationwide

Cavity Wall Insulation Specialists

High-Performance Cavity Wall Insulation for Hard-to-Treat Properties.

MODERN PLAN INSULATION LIMITED rosette icon

Over 40 years

Industry Experience

MODERN PLAN INSULATION LIMITED shield icon

High Performance

Spray Foam Systems

MODERN PLAN INSULATION LIMITED eco icon

Energy Efficient

Low Costs, Lower Emissions

MODERN PLAN INSULATION LIMITED map icon

UK Wide Coverage

Nationwide Service

For 40 years, Modern Plan Insulation Ltd has been installing specialist closed-cell cavity wall foam insulation systems throughout Manchester, Bolton, Lancashire, Liverpool, Cheshire and across the UK.

Our advanced polyurethane foam insulation delivers outstanding thermal performance while completely filling the cavity, eliminating voids, cold spots and air movement that can occur with traditional fibre and bead insulation systems.

Whether you're looking to improve energy efficiency, reduce heating costs, upgrade a property for a heat pump installation or replace failed cavity wall insulation, MPI provides long-term solutions backed by decades of experience.

For larger commercial, industrial and agricultural buildings, our Spray Foam Insulation systems deliver seamless thermal performance and condensation control, our Marine & Buoyancy Foam Applications offer specialist closed-cell foam solutions for marine environments while or Condensation Control provides spray foam insulation solutions to prevent condensation, reduce moisture damage, and protect buildings from mould, corrosion, and deterioration.

Ideal for Hard-to-Treat Properties

Closed-cell cavity wall foam is particularly effective where traditional insulation systems may not perform adequately.

Applications include:

MODERN PLAN INSULATION LIMITED brick wall

Narrow cavity walls

MODERN PLAN INSULATION LIMITED house icon

Older and non-standard construction properties

MODERN PLAN INSULATION LIMITED stone wall icon

Random stone and irregular cavity construction

MODERN PLAN INSULATION LIMITED flood icon

Flood-risk & high-exposure locations

MODERN PLAN INSULATION LIMITED air source heat pump icon

Property upgrades for heat pump installations

MODERN PLAN INSULATION LIMITED broken wall icon

Homes affected by failed cavity wall insulation

cavity-wall-process

Why Choose Closed-Cell Cavity Wall Foam?

Unlike traditional insulation materials that can settle, slump or leave gaps over time, our closed-cell foam expands to fill every part of the cavity, creating a continuous thermal and air-tight barrier.
As the foam cures, it bonds to both the inner and outer leaves of the wall, providing additional structural stability while significantly improving thermal performance.

MODERN PLAN INSULATION LIMITED thermometer icon

Superior thermal performance

MODERN PLAN INSULATION LIMITED piggy bank iocn

Lower heating and energy costs

MODERN PLAN INSULATION LIMITED leaf icon

Reduced carbon emissions

MODERN PLAN INSULATION LIMITED snowflake icon

Eliminates cold spots and voids

MODERN PLAN INSULATION LIMITED shield icon

Moisture-resistant and highly durable

MODERN PLAN INSULATION LIMITED zone icon

Suitable for all exposure zones

MODERN PLAN INSULATION LIMITED wall icon

Structural wall stabilisation benefits

MODERN PLAN INSULATION LIMITED date icon

Performance that lasts the life of the building

before-and-after-air-leakage-heat-pump

Failed Cavity Wall Insulation Replacement

MPI are specialists in the removal of failed cavity wall insulation systems.

Where fibre insulation has settled, become damp or created cold spots within the cavity, our specialist extraction and replacement services can restore thermal performance and improve the overall efficiency of the property.

Many of our clients choose to replace failed cavity wall insulation with closed-cell foam to achieve a permanent solution that completely fills the cavity and helps prevent future issues.

Why Heat Pump Installers We Work With Recommend Closed-Cell Cavity Wall Foam

As heat pumps become increasingly popular, improving the thermal performance of a property has never been more important.
Heat pumps operate most efficiently in well-insulated, airtight buildings where heat loss is minimised. Our closed-cell cavity wall foam insulation completely fills the cavity, eliminating cold spots, reducing air movement and creating a continuous thermal barrier throughout the wall structure.

By improving airtightness and reducing heat loss, closed-cell foam helps heat pumps maintain comfortable indoor temperatures more efficiently, reducing energy consumption and improving overall system performance.

For this reason, MPI works closely with heat pump installers throughout the North of England, helping homeowners create warmer, more energy-efficient homes that are ready for low-carbon heating technologies.

Why Choose MPI?

With over 40 years of insulation experience installing cavity wall foam systems, MPI is one of the UK's most experienced specialist cavity wall insulation contractors.
From difficult-to-treat properties and historic buildings to modern homes and heat pump upgrades, we deliver proven solutions that improve comfort, reduce energy consumption and protect buildings for the long term.

Smarter Insulation Solutions Since 1985

Struggling with Cold Walls or High Heating Bills?

Whether you're insulating a hard-to-treat property or replacing failed cavity wall insulation, our specialist team can help.
Book a free cavity wall assessment today.