Spray Cork Exterior Wall Coatings
A breathable, flexible thermal coating sprayed directly onto your exterior walls — no scaffolding scars, no repaint cycle, no maintenance for 25 years.
The problem
Why this matters
Traditional render cracks, holds moisture and needs painting every five to seven years. UK walls lose huge amounts of heat through cold bridges, and conventional external wall insulation (EWI) is invasive and expensive.
Our solution
How we fix it
Our spray-applied cork coating is a 3–6 mm flexible thermal layer made from natural cork granules, water-based resins and pigments. It bonds to brick, render, pebble-dash, timber, uPVC and concrete, expands and contracts with the building, and reflects up to 30% more heat into your home.
What you get
- Improves wall U-value by up to 30%
- 25-year manufacturer warranty
- Available in 28 colours, no need to repaint
- Bridges hairline cracks up to 2 mm
- Class A2 fire-rated, water-resistant, breathable
- Applied in 2–3 days for an average semi-detached
How we work
Our process
- Step 01
Survey
Free site survey, surface diagnosis, written quote within 48 hours.
- Step 02
Prep
Pressure wash, biocide treatment, patch any defects, mask windows and frames.
- Step 03
Primer
Apply a breathable bonding primer matched to your substrate.
- Step 04
Spray
Two cross-coats of cork applied by HVLP spray to a uniform 3–6 mm finish.
- Step 05
Sign-off
Final inspection, colour match check, warranty pack issued.
Common questions
People often ask
- Will it actually reduce my heating bills?
- Independent testing shows a ~30% improvement in wall thermal resistance. Most clients report a noticeable difference in the first winter; payback typically lands between 5 and 8 years depending on fuel type and property age.
- Do I need planning permission?
- For most properties, no — spray cork is treated as a redecoration. Listed buildings and conservation areas need consent; we can guide you through it.
- Can it go over my existing render?
- Yes. As long as the existing render is sound, we can spray over it. We'll patch hairline cracks during prep.
- What's the warranty?
- 25 years from CorkSol, the certified manufacturer we install for. Covers cracking, flaking and colour fade.
Get a quote
Two minutes to a price.
Tell us the service, area and property type. We'll give you an indicative price on screen and follow up to book a free survey.
What are you looking to coat?
Choose the closest match — we can refine it later.