External rendering in Swindon: costs and what to expect
What external rendering costs in Swindon, the two-coat process, and when a wall needs rendering rather than skimming.
Updated 2 September 2026
External rendering is a sand-and-cement or lime coating applied to the outside of a wall, in two passes at roughly 12 m² per day. It protects the masonry from wet winters and gives a flat finish to paint or leave. It is slower than indoor skimming, so it costs more per square metre. A hairline crack in the render is easy to dismiss as cosmetic — a fair call on appearance alone. But render is the wall's raincoat, and a hollow or cracked patch lets water behind the coat where the damage spreads invisibly, until the cheap repair has become a re-rendered elevation. The fix is boring and cheap: inspect after every winter and repair while the damage is a crack. This guide covers sand-and-cement and lime render on masonry — not silicone or monocouche systems, and not cladding over insulated frames.
Rendering vs skimming
Skimming is a thin indoor finish over plasterboard or old plaster. Rendering is a thicker weatherproof coating for outside walls. The two are not interchangeable: render must shed rain and survive frost, which is why it is applied in two passes and worked at about 12 m² per day rather than the 18 m² of indoor skimming. If the question is about the inside of a wall, skimming is almost always the answer; if it is about a weather-facing outside wall, rendering is the job.
The two-coat process
The first pass is a scratch coat, left to key and partially set. The second is the float coat, ruled flat with a straight edge and finished smooth or textured. Between coats the wall needs to dry, so a rendered elevation usually spans two or more visits rather than one. Rushing the second coat onto a wet first coat is the most common cause of render cracking later. Weather also dictates the schedule, because render cannot be floated properly in frost or driving rain.
Materials and finishes
Most Swindon rendering is sand and cement, finished smooth, or with a light texture to hide minor marks. Lime render is used on older solid-wall houses because it lets the wall breathe and move. Modern external rendering services can also include a thin coloured topcoat, which removes the need to paint the wall afterwards and gives a consistent finish with less maintenance. Beads on corners and reveals keep the edges straight and are part of the job, not an extra.
What it costs
At the £230-per-day Swindon rate and 12 m² per day, labour works out around £19 per m² before scaffold and materials. Scaffold is a real cost on any wall above head height and is usually quoted separately. Rendering should not be done in frost or heavy rain, so most Swindon jobs are booked for spring to autumn. For a full picture of indoor and outdoor rates, see how much plastering costs, and remember render is priced per square metre of wall, not per room.
Planning and scaffold
Any elevation above a single storey needs scaffold, which adds cost and takes time to erect and strike. Access to the wall — over a conservatory, a boundary or a public path — can push the price up further. Before you book, agree who arranges the scaffold and confirm the renderer has access to the whole wall, because a wall that cannot be reached cannot be floated in one pass and the finish will show the joins.
A hairline crack is cheap — blown render is not
A hairline crack can often be filled and painted, but blown or hollow-sounding render needs cutting back and redoing, or water gets behind the coat and the damage spreads. Inspect render after a wet winter and repaint the surface before it becomes porous. A small repair done early is far cheaper than re-rendering a whole elevation, and repainting every few years is the cheapest insurance a rendered wall has. An annual visual check, especially after winter, catches problems while they are still cheap to fix.
The raincoat, maintained
The crack dismissed as cosmetic — the situation at the top of this page — is now a checklist instead of a gamble: tap for hollows, look for straight-line cracks, repaint before the surface goes porous, and repair small damage before a wet winter spreads it. Kept up, the render does what it promised at the start: protects the masonry for decades. The same aftercare logic applies indoors, which is why drying and decorating times matter as much as the application itself.
Ready to take the next step? Compare local businesses or price your job.
Find a rendererRelated guides
Sources & further reading
External rendering in Swindon: costs and what to expect: quick questions
How long does external render last?
A sound sand-and-cement render typically lasts decades. The failures to watch for are hollow patches where it has separated from the wall, and cracks that let water behind the coat. Regular repainting protects the surface and extends its life.
Can rendering be done in winter?
It should be avoided in frost or heavy rain. Reputable plasterers book external work for spring to autumn and pause if the temperature drops near freezing. Ask before booking whether the date can be moved if the weather turns.
Render or cladding: which is better?
Rendering is cheaper up front and suits solid walls that need a breathable coat. Cladding costs more but adds insulation. For most Swindon homes a rendered finish is the straightforward choice unless insulation is the priority.
How do I know if my render needs repair or replacing?
Tap the surface and listen for hollow patches, and look for cracks that run in straight lines or let water in. Small cracks can be filled and painted; hollow areas need cutting out and redoing. If large areas sound hollow, it is usually cheaper to re-render the whole elevation than to patch it repeatedly.