Concrete solid floors naturally lose heat directly into the ground, especially in older or uninsulated properties. Solid floor insulation adds a thermal layer above or below the concrete slab, improving overall energy efficiency and indoor comfort throughout the year.
Concrete solid floors naturally lose heat directly into the ground, especially in older or uninsulated properties. Solid floor insulation in UK homes helps reduce this heat loss by adding a thermal layer above or below the concrete slab, improving overall energy efficiency and indoor comfort throughout the year.
By reducing heat escaping through the floor, your heating system does not need to work as hard to maintain a comfortable temperature. This can help lower energy consumption and improve overall home energy efficiency, particularly in ground-floor rooms that are used daily.
Insulated floors help eliminate the feeling of cold surfaces underfoot, making living spaces significantly more comfortable — especially in kitchens, living rooms, and open-plan areas where people spend most of their time.
Where eligible, homeowners may be able to access ECO4 funding for solid floor insulation, which can significantly reduce installation costs. The scheme runs until 31 December 2026, and eligibility depends on property assessment, EPC rating, and scheme approval requirements.
Properly insulated floors help maintain a more stable indoor temperature, which can reduce the risk of condensation forming at floor edges, skirting boards, and cold bridging points — helping to improve overall damp control within the property.
Insulation installed on top of the existing concrete slab, with a new screed or floor finish above. Best for homes with sufficient ceiling height (minimum 2.3m after installation).
Insulation installed below a new concrete slab — for new extensions or complete floor replacement. Best for new build or major renovation projects.
Insulation installed vertically at floor edges to prevent heat loss at slab edges. Can be combined with above-slab or below-slab insulation.
We use high-performance insulation materials selected according to the floor construction, available build-up height, moisture conditions and required thermal performance. For each solid floor insulation project, the most suitable product is specified following a site survey and technical assessment.
Installed above an existing concrete slab. PIR provides strong thermal performance with a relatively slim build-up, making it suitable where floor height is limited.
Commonly used below a new or replacement concrete slab. A cost-effective option with good load-bearing performance for extensions, renovations and major floor replacement projects.
Specified where ceiling clearance or threshold height is restricted. Its high thermal performance allows the required insulation level with a thinner layer.
Installed in floors exposed to higher moisture levels or heavy loads. Offers high compressive strength and strong resistance to water absorption.
Solid floor insulation adds a thermal layer above or below an existing concrete or solid floor to reduce heat loss, improve comfort and increase overall energy efficiency. Installation is carefully planned to minimise disruption and ensure compliance with building standards.
We assess the condition of the existing floor, check for damp issues, measure floor levels and evaluate ceiling height to confirm suitability for insulation works.
Existing floor coverings are removed and the concrete slab is inspected. A damp proof membrane (DPM) is checked or installed if required, and the surface is prepared and levelled to ensure proper insulation performance.
Rigid insulation boards are laid with staggered joints to minimise heat loss. Joints are sealed or taped, a vapour control layer is installed where necessary, and a screed layer (typically 50–75mm sand-and-cement or liquid screed) is applied over the insulation.
Once the screed has cured, the floor is ready for final finishes such as tiles, laminate or carpet. We provide installation certification, compliance documentation and guidance on suitable floor coverings.
Costs typically depend on the property size, total floor area, existing floor construction, insulation method, and preparation required. Older properties may need additional work involving damp-proof membranes, floor levelling, skirting boards, thresholds, doors, and floor finishes.
| Property type | Typical Manchester areas | Indicative cost range | Potential grant support | Cost if fully funded |
|---|---|---|---|---|
| Terraced house | Levenshulme, Burnage | £2,000–£4,000 | Partial or full funding may be available | From £0 |
| Semi-detached house | Stockport, Oldham | £2,500–£5,000 | Partial or full funding may be available | From £0 |
| Detached house | Bramhall, Didsbury | £3,000–£6,000+ | Partial or full funding may be available | From £0 |
At Compliant Retrofits, we specialise in solid floor insulation across Manchester, delivering tailored retrofit solutions that improve thermal efficiency, reduce heat loss, and manage moisture risks in both concrete and older renovation floor systems.
Our team includes experienced retrofit and damp control specialists who carefully assess your property before installation — inspecting damp proof membranes (DPM), floor build-ups, and moisture conditions to ensure your insulation system is safe, compliant, and long-lasting.
We help homeowners access ECO4 funding by managing eligibility assessments, documentation, and application processes — making it easier to upgrade your home with little or no upfront cost where you qualify.
We use high-quality, certified insulation products designed for durability and performance. Every installation is carried out to meet current Building Regulations and energy efficiency standards.
We carefully consider floor levels, thresholds, and access points to ensure a seamless finish without impacting door clearances or structural integrity — performance and practicality in everyday use.
Typically 130–200mm in total, including insulation (80–120mm) and screed (50–75mm). We check your door thresholds and ceiling height at the survey before any installation.
Above-slab insulation requires removing floor finishes (tiles, laminate, carpet). We can work around fixed furniture such as kitchen units and islands, but some disruption is unavoidable — we plan the work to minimise it.
Most ground floors are suitable, but ceiling height must allow for the additional floor build-up — a minimum of around 2.3m after installation. Properties with low ceilings (under about 2.2m) may not be suitable; we confirm at the free survey.
You may qualify if you receive qualifying benefits or meet ECO4 Flex criteria through your local authority — ECO4 runs until 31 December 2026. Contact us for a free eligibility check.
Book your free consultation today — or simply contact us to discuss your solid floor insulation project.
