Detailed building survey to assess structural condition, moisture levels, and thermal requirements. Thermal modelling determines the insulation thickness needed to achieve target U-values. We'll advise the right system and thickness before any commitment is made.

Professional scaffold erected for safe access to all elevations. Exterior surfaces cleaned, all defects repaired, damp-proof course checked and protected. The condition of the substrate is critical — we never apply EWI over a failing wall surface.

EPS, PUR, or Mineral Wool boards are mechanically fixed and adhesive-bonded to the external walls. Boards are tightly butted, level, and aligned across all elevations. No gaps are permitted — a single thermal bridge undermines the performance of the entire system.

All board joints, corners, window reveals, and pipe penetrations are sealed and fitted with professional edge profiles. This eliminates thermal bridges — the main cause of cold spots, condensation, and mould in buildings with inadequate insulation.

Polymer-modified base coat applied over the full insulation layer with embedded alkali-resistant fibreglass mesh pressed in while wet. This creates a crack-resistant, structurally sound foundation for the finish coat and provides the system's long-term durability.

Silicone render, monocouche, or acrylic finish applied in your chosen colour and texture. Silicone is our recommendation — hydrophobic, self-cleaning, and through-coloured for 25+ years without repainting. The finish transforms the appearance of the property while protecting the insulation system from weather.

Full quality inspection of all elevations before sign-off. Manufacturer and workmanship warranty documentation provided. Zero deposit throughout — you pay only when the work is complete and you're fully satisfied.

The most popular and cost-effective EWI system — proven 25+ year performance across thousands of UK properties. Excellent thermal performance at 0.040 W/mK, lightweight, and easy to work with on residential builds. Our primary recommendation for most Sheffield homes. Typical installed cost: £40–£60/m².

The best thermal performance available at 0.023–0.025 W/mK — meaning thinner boards achieve the same U-value as thicker EPS. Ideal where board thickness is a constraint (narrow reveals, planning restrictions) or where maximum thermal performance is needed. Typical installed cost: £70–£90/m².

Natural mineral fibre with A1 fire rating and excellent vapour permeability — the specialist choice for listed buildings, properties in conservation areas, and older solid-wall construction where breathability is essential. Often the only EWI system approved for historic properties.

Sheffield's older solid-wall homes typically have U-values of 0.9–1.2 W/m²K — meaning they lose heat rapidly. A professionally installed 100mm EPS system reduces this to 0.15–0.25 W/m²K, delivering a 75-85% reduction in wall heat loss.

For a typical Sheffield 3-bed semi, annual heating cost savings of £300–£600 are achievable. Over 25 years, that's £7,500–£15,000 in cumulative savings — significantly offsetting the installation cost, before accounting for property value increases or avoided damp treatment costs.

Internal wall surface temperatures rise by 8-12°C after EWI installation — eliminating the cold surfaces that cause condensation, black mould, and that distinctive 'cold wall' feeling in Sheffield's older terraces and semis.

The Great British Insulation Scheme (GBIS) and ECO4 can fund 25-100% of EWI installation costs for eligible Sheffield households. Eligibility is based on EPC rating, household income, and benefits status. We advise on grant eligibility at the free site survey and support applications where available.