
Johnstone's
The system we specify most often — BBA-certified.
- Stormshield Silicone
- Stormshield Monocouche
- Stormshield Acrylic
Bath · BA postcodesExternal Wall Rendering
External wall rendering covers every kind of facade finish — from a single elevation repair to a full property render in any modern system. We work with silicone, monocouche, acrylic and lime render across Bristol and Bath.
Most of what we do in Bath sits on Georgian limestone rather than the brick and pebbledash that dominates Bristol. That changes the specification before it changes the price: a solid lime-built wall needs a system that lets it breathe, and the wrong choice traps moisture in the masonry.
We survey every Bath property before quoting and tell you plainly whether external wall rendering is the right answer for your wall — including when it isn't.
Listed Building Consent and conservation area approval are handled before we start. Where consent is needed we will say so at the site visit, not after the scaffold is up.
The same specification we work to across Bristol and Bath.
Single elevation repairs and full property re-rendering
All major render systems — silicone, monocouche, acrylic, lime
Substrate preparation including full strip-down of failed render
Beading, trims, mesh and crack-resistance preparation
Brick repointing where required during substrate prep
Porch, extension and garage rendering
Commercial unit elevations
10-year manufacturer warranty on all installations
Recent work
Real jobs across Bristol and Bath, photographed as we finished them. No stock photography.



Failed pebbledash or sand-and-cement needing full replacement
Single elevation damaged by weather exposure (typically north-facing)
Cracking along stress points (corners, reveals, lintels)
Damp penetration from failed existing render
Unsightly patched repairs from previous contractors
Extension or porch that's out of keeping with the main house
Commercial property needing a refresh to attract tenants
We've completed hundreds of external wall rendering projects across Bristol and Bath. Here's what makes them last.
Single biggest kerb-appeal upgrade you can give a property
25-30 year service life with a modern system
Through-colour options eliminate painting forever
Adds 5-8% to property value (estate agent data)
Weatherproofs and protects underlying brickwork
Modern systems are highly breathable — prevents internal damp
Comprehensive 10-year warranty as standard
Disruption-minimised installation in 5-14 days
Every external wall rendering project follows the same process, in Bath as in Bristol — from your free site visit to your 12-month aftercare check.
We visit, survey the property with you, discuss your needs, take measurements and photographs.
Detailed quote within 48 hours. We explain the options — silicone, monocouche, acrylic, lime — so you can choose with confidence.
Our own scaffold for most projects, erected before work starts.
Strip off failed existing render, hack out defective pointing, treat salt/algae contamination.
PVC beads, expansion joints, alkali-resistant mesh embedded in base coat.
Polymer-modified cementitious base coat, 6-10mm, trowelled and ruled flat.
Silicone (sprayed), monocouche (trowelled), acrylic (rolled or sprayed), or lime (trowelled) — 1.5-2mm thick.
24-48 hours protection from rain and frost. We monitor weather and reschedule if needed.
Final walk-around, warranty certificate, aftercare guide.
Free inspection at 12 months — any issues fixed under warranty.
Only BBA-certified systems from leading UK and European manufacturers. Every installation carries a manufacturer warranty as standard.

The system we specify most often — BBA-certified.

Hard-wearing through-colour mineral render.

Premium systems, excellent colour depth.

Best for EWI + render combined projects.
Verified reviews from work completed in Bath.
Kyran and his team are really good - the work done re-rendering a heritage building was first rate. Tidied and cleaned the site.
Everything you need to know about our external wall rendering service.
They're the same thing — both terms refer to applying render to the outside walls of a property. "House rendering" is more commonly used for residential work; "external wall rendering" is the broader term that includes commercial and partial-elevation work.
Yes, but the paint needs to be properly prepared first. We use a chemical paint remover or mechanical abrasion to key the surface, then apply a bonding primer before the base coat. If the paint is in poor condition or there are many layers, full removal may be necessary.
Yes — we regularly render shop fronts, office buildings, pubs and industrial units across Bristol. Commercial work is typically quoted per elevation rather than per property, and we can work to your tenant's schedule including weekends.
A modern silicone or monocouche render system lasts 25-30 years on a Bristol property with proper maintenance. Acrylic systems last 15-20 years. Sand-and-cement and pebbledash systems (the ones we're typically replacing) last 10-20 years.
Yes — single-elevation rendering is one of our regular jobs. It's most commonly needed on north-facing walls that take the worst of the Bristol weather. Single-elevation work is proportionally more expensive per m² due to scaffold costs but is still very cost-effective compared with full re-render.
There's some mess during the strip-off phase (chunks of old render falling) but we contain this with debris netting and tidy up at the end of each day. The application phase is very clean — render is mixed in a sealed tub and applied with trowel or spray.
Yes — we work with most major insurers on storm damage, impact damage and escape-of-water claims. We can provide detailed quotes in the format insurers require and work with loss adjusters directly. £10m public liability insurance as standard.
All major render systems offer 100+ standard colours covering BS 4800 and RAL ranges. Bespoke colour matching is available for a small premium. We bring physical colour charts to the site visit so you can see how different colours will look in your specific light conditions.
Yes — we regularly render detached garages, garden offices, summerhouses and outbuildings as standalone projects or as part of a full property render. Single-storey outbuildings can usually be rendered without scaffold, which keeps the cost down.
10-year manufacturer system warranty on all qualifying installations plus our own 10-year workmanship warranty. £10m public liability insurance. Free 12-month aftercare inspection on every job.
Every neighbourhood has its own external wall rendering page — 5 across Bath and 18 across Bristol, where most of our work is.
Based in Hanham (BS15), covering the BA and BS postcodes. Free site visits within 10 miles; further afield by arrangement. Listed building consent, conservation area consent and Building Control notification are handled on your behalf where required.
See the full external wall rendering in Bristol page, or browse recent work across both cities.

Bristol & Bath
Free site visit across the BA postcodes, a fixed written quote within 48 hours, and a straight answer on whether consent is needed.