Specialist & Commercial
Rendering specified for the wall behind it
Render fails when it cannot cope with the moisture in the wall it is on. We look at the construction first — solid stone, cavity or timber — and specify a system that lets the wall behave the way it was built to.
- 24/7 emergency line
- Free written quotations
- Fully insured work
24/7
Emergency roofing response across Cumbria and the Borders, answered day and night.
Rendering: the short answer
Rendering applies a protective and decorative coating to external walls. On roofing projects it most often accompanies chimney work, gable repairs and wall heads. The critical decision is whether the wall needs a breathable lime render or a modern cement or silicone system — using the wrong one traps moisture in the wall.
Who this is for
- Properties with cracked, hollow or blown render
- Chimney stacks and gables needing weather protection
- Solid-wall buildings where a breathable system is essential
- Owners combining render with roofing or roofline works
Signs you need this work
Hollow-sounding areas
Render has debonded from the substrate and will eventually fall.
Cracking
Fine crazing is usually cosmetic; structural cracks admit water behind the render.
Damp inside after render was applied
The classic sign of a non-breathable render on a solid wall.
Staining and organic growth
Persistent wetting, often from a defective gutter or coping above.
Materials and specification
Lime render
Breathable, flexible and correct for solid stone and older masonry.
Sand-cement render
Durable on modern cavity construction where breathability is not required.
Silicone and through-coloured render
Water-repellent yet vapour-open, with no repainting cycle.
Mesh reinforcement and beads
Movement control at openings and junctions where cracking starts.
How it works
Our process, step by step
Identify the construction
Solid or cavity — this decides the entire specification.
Fix the water source first
Rendering over a wall being wetted by a defective gutter or coping solves nothing.
Prepare the substrate
Failed render removed, joints raked, surface keyed.
Apply in coats
Correct coat thickness and curing time, with beads and reinforcement where needed.
Finish
Scraped, floated, textured or through-coloured to the agreed specification.
Why it matters
What you get from doing it properly
System matched to the wall
Breathable where it must be, durable where it can be.
Cause fixed before cover-up
We deal with the source of the wetting before rendering over it.
Done alongside roofing
Sharing scaffold with roof or chimney works reduces the cost significantly.
Common questions
Related
Work that often goes with this
Roughcasting & Harling
Roughcasting, known as harling in Scotland and the Borders, throws a wet mix containing aggregate onto a wall to create a textured, highly weather-resistant finish. It is the traditional external treatment across much of southern Scotland, the Borders and west Cumbria for good reason: it stands up to driven rain better than a smooth render.
Chimney Repairs & Repointing
Chimney repair covers repointing, rebuilding, flaunching, pot and cowl work and the lead flashings that seal the stack to the roof. Chimneys are the most weather-exposed masonry on a building and a very common source of damp attributed to the roof.
Heritage & Traditional Roofing
Heritage roofing is the repair and renewal of roofs on listed, historic and traditionally built properties using materials and techniques appropriate to the original construction — natural slate and stone slate, lime mortar, traditional leadwork and hand-formed detailing — and carried out within the consents the building's status requires.
Roofline — Fascias, Soffits, Guttering & Bargeboards
Roofline covers the fascias, soffits, bargeboards, guttering and downpipes at the edge of the roof. These components carry the gutter, close the eaves and manage all the water coming off the roof, so their failure causes damp, rot and pest access even when the covering itself is sound.
Coverage
Rendering across our patch
Carlisle and north Cumbria are our core area. We work regularly across the rest of Cumbria and southern Scotland, and take planned projects further afield.
Not sure what your roof needs?
Tell us what you are seeing and we will tell you honestly whether it is a repair, a maintenance job or something that needs replacing. Consultations and written quotations are free.