Unlike modern cavity walls, which feature a built-in air gap to keep moisture out, older period properties are built with solid single-leaf brickwork.

• Poor Thermal Performance: Solid brick has very little thermal resistance, meaning heat escapes easily through the walls.

• Moisture Movement: Period bricks and traditional mortar are designed to be "breathable." They absorb moisture from rain and naturally release it through evaporation.

If you apply inappropriate, impermeable modern insulation or synthetic renders to a single-leaf wall, you trap moisture inside the brickwork. When temperatures drop, that trapped water freezes, expands, and causes the bricks to spall, crack, or degrade—leading to damp interior walls and costly structural damage.

When executed correctly, External Wall Insulation is often the best thermal upgrade for solid-brick period homes for several reasons:

• Preserving Interior Space & Character: Internal wall insulation eats into your room dimensions and destroys original features like ornate cornicing, deep skirting boards, and window architraves. EWI keeps all of that untouched inside.

• Maximum Thermal Efficiency & Year-Round Comfort: Wrapping the exterior creates a continuous thermal envelope around the building, drastically reducing heat loss, eliminating cold bridges, and ensuring that external insulation also keeps the house cooler in Summer months as it keeps the house warm in Winter months.

• Protecting the Fabric of the Building: By moving the dew point outward, a properly designed EWI system actually shields the original brickwork from extreme weather fluctuations and freeze-thaw cycles.

Insulating a period property requires a delicate balance of modern engineering and traditional building science. To protect single-leaf walls, the installation must be entirely vapor-permeable.

• Specialist Breathable Systems: We use high-performance, breathable insulation boards paired with traditional lime-based renders or finishing options rather than standard acrylic or cement-based systems.

• Silicone Rendering Finish: Applying the silicone rendering over External insulation allows clean finish at customer preferred colour which gives the property’s exterior a look of a new built house.

• Detailing and Architectural Integration: One of the main concerns homeowners have with EWI is that it will alter the proportions of their facade, making window reveals look "sunken" or covering up intricate brick detailing. Our craftsmen meticulously handle window reveals, cornices, and exterior trims to preserve the home’s original aesthetic.

• The VoskeFinish Standard: From initial structural assessment to the final decorative finish, we own the outcome of every project, ensuring your home is both thermally efficient and visually stunning.