Last updated on 12th December 2025 by ProGuard Exteriors

Spray cork is fast becoming one of the most sought-after exterior wall coatings in the UK. Durable, eco-friendly, and highly effective, it offers an attractive alternative to traditional renders and paints.

Spray cork is a natural, eco-friendly coating that insulates, protects, and enhances exterior walls. Applied via spray, it bonds to surfaces like brick, render, and timber. While costs typically range between £80 to £120 per square metre, many homeowners find it offers long-term value through improved energy efficiency and reduced maintenance. Its growing popularity in the UK is driven by its sustainability, durability, and ability to replace cracked or outdated render with a breathable, modern finish.

At ProGuard Exteriors, we specialise in professional application of cork-based coatings that deliver outstanding thermal insulation, breathability, and weather protection for residential and commercial buildings alike.

What Is Spray Cork?

Natural and Sustainable: Spray cork is made from natural cork granules, a renewable material harvested from the bark of cork oak trees. This makes it one of the most environmentally friendly coating options available today.

Versatile Application: Suitable for a wide range of surfaces including brick, block, concrete, timber, and existing render. It can be applied to both new builds and refurbishments.

Long-Lasting Protection: Resistant to cracking, flaking, and UV degradation, cork coatings maintain their appearance and performance for years with minimal maintenance.

Benefits of Spray Cork Coatings

Choosing spray cork offers a wide range of advantages for property owners seeking a high-performance finish that also contributes to long-term energy savings.

Thermal Insulation: Cork has natural insulating properties, helping to regulate indoor temperatures and reduce heat loss through external walls.

Breathability: Unlike some synthetic coatings, cork allows walls to breathe. This reduces the risk of damp and condensation inside the property.

Water Resistance: The coating repels rainwater while allowing trapped moisture to escape, preserving the integrity of underlying wall structures.

Acoustic Insulation: Spray cork also helps to reduce external noise, making it a great option for homes in busy urban areas or near roads.

Fire Resistant: Cork is naturally resistant to fire, offering an additional layer of protection for your property.

Ideal Applications for Spray Cork

Spray cork is suitable for a wide variety of domestic and commercial projects, including:

External wall insulation and renovation

Overcoating tired or damaged render

Improving energy performance of older homes

Enhancing visual appeal with a textured finish

Regulatory Requirements and Property Suitability

Any external wall insulation, rendering, spray cork or other external refurbishment works must be considered in the context of the property’s construction, location and applicable statutory requirements.

Depending on the nature and extent of the proposed works, Building Regulations requirements may apply, including considerations relating to thermal performance, fire safety, moisture management and ventilation.

Additional permissions or consents may also be necessary for listed buildings, properties within conservation areas or buildings subject to specific planning restrictions.

Requirements can vary depending on the individual property and proposed works, and should be checked with the relevant local authority or appropriate building control body before work commences.

The suitability of any proposed system, materials or installation method is subject to an appropriate assessment of the existing building and site conditions. Responsibility for obtaining any necessary permissions, approvals and professional design input where applicable should be clearly established before works commence.

Any services, specifications, quotations and installation responsibilities undertaken by ProGuard Exteriors will be subject to the agreed project scope and formal written terms.

Why Choose ProGuard Exteriors?

We are an experienced and trusted spray cork installer serving homeowners across the UK. Our team is fully trained to deliver high-quality applications with attention to detail and long-lasting results.

Expert advice tailored to your property

Certified spray cork technicians

Competitive pricing and no-obligation quotes

Full coverage across London, the South East, and surrounding regions

Ready to transform your property with spray cork? ProGuard Exteriors offers expert installation and advice across Abingdon, Boars Hill, Cumnor, Eynsham, Headington, Kennington, Oxford, Radley, Wheatley, Witney and all surrounding areas. Contact us today for a free quotation and discover the benefits of this sustainable, high-performance coating.

Contact us today to discover how spray cork can enhance your home’s appearance, improve energy efficiency, and protect against the elements — all with a sustainable solution built to last.