How Long Does It Take to Render a House?

Typical rendering timescales at a glance

Every house is different, but most render jobs fall into fairly predictable bands. The figures below are typical working times on site once scaffolding is up, assuming reasonable weather and a crew of two or three. They are a guide for planning, not a promise, and your renderer should give you their own estimate after surveying the walls.

Typical ranges only. Weather, repairs and access can extend any of these.

Notice that these are working days. The calendar time from the scaffold going up to the scaffold coming down is often longer, because rain, frost and curing pauses all sit in between. When you plan around a render job — holidays, a house sale, a garden project — it is sensible to allow for that gap.

How long each render system typically takes

The render system has a big effect on the schedule, because each one is built up differently.

Silicone and acrylic thin-coat systems (including K-Rend-type products) go on over a base coat with reinforcing mesh. The base coat needs to cure before primer and the thin finish coat go on. On a straightforward wall these systems move along steadily, and the finish coat is quick to apply. See our silicone render page for how the system is built.

Monocouche is a one-coat, through-coloured render applied in one or two passes and then scraped back to texture at the right moment. It can be one of the quicker systems on sound blockwork, but the scraping has to happen within a fairly narrow window, which means crews plan each elevation carefully.

Sand and cement is traditionally applied in two or three coats — a scratch coat, a floating coat and sometimes a finish — with drying time between each. It is often painted at the end, which adds another stage once the render is dry enough to take paint.

Lime is the slowest by some distance, as explained below, because each coat must carbonate and firm up before the next goes on.

Tyrolean and dashed finishes go over a base render and are quick to apply in themselves, but the base must be ready first.

The eight things that decide how long it takes

1. Wall area. More square metres simply means more work. A tall gable or a three-storey town house takes longer than a bungalow of similar floor area.

2. Strip-out. Hacking off old render or pebbledash is slow, heavy work, and it produces a lot of waste that has to be bagged and removed.

3. Repairs. Once old render is off, the wall underneath often needs attention: loose bricks, failed lintels, old fixings, cracks. These have to be fixed before new render goes on.

4. Weather. Rain, frost, strong wind and hot sun can all stop work or force a crew to change elevations.

5. Curing. Coats need time to set and dry before the next, and that time varies by product and conditions.

6. Scaffold. When the scaffold goes up, how it is arranged, and whether it can be moved between elevations all affect the flow of work.

7. Details. Bay windows, dormers, arches, quoins, lots of openings and fiddly junctions with roofs and extensions take far longer per square metre than a plain wall.

8. Crew size. A larger crew moves faster, and some stages, especially finish coats, need enough hands to keep a wet edge across a whole elevation.

The stages of a typical render job

Most render jobs follow the same broad sequence, and each stage has its own share of the timetable. Scaffolding goes up, often a day or two before the renderers arrive. Windows, doors, paths and plants are protected. Old render or pebbledash is removed if needed, and the wall is repaired. Beads are fixed at corners, edges, openings and the base of the wall. The base coat goes on with mesh bedded in, then cures. Primer and the finish coat follow, then sills, downpipes and fittings go back, the site is cleaned, and the scaffold comes down after a final inspection.

On a sound wall with no strip-out, preparation and beading are a relatively small slice of the time, and the coats take most of it. On a strip-and-re-render job, the first half of the programme can be almost entirely removal and repair. Our guide to what to expect during a rendering job walks through these stages day by day.

Curing times by render type

Curing is the part of the schedule homeowners often underestimate, because nothing seems to be happening. In reality it is the stage that decides whether a render lasts.

Cement-based base coats — traditional sand and cement, and the base coats used under many thin-coat systems — usually need days rather than hours before the next coat. How long depends on the product, thickness, temperature and humidity; manufacturers state minimum waiting times on their data sheets, and a good renderer follows them rather than pushing on.

Thin-coat silicone and acrylic finishes go over a cured base coat and primer. The finish coat itself is thin and is typically surface-dry fairly quickly in good weather, but it needs protecting from rain and frost while it sets, often for a day or two.

Monocouche is scraped while still green, then needs dry, frost-free conditions while it hardens.

Lime cures by slowly absorbing carbon dioxide from the air, which can take weeks per coat to firm up enough for the next. It also needs protection from drying too fast, often with damp hessian or sheeting, and from frost. Our lime render page explains why the slow cure is part of what makes lime suit older walls.

Skipping or shortening curing times is a well-known cause of cracking and poor adhesion. If a renderer tells you a stage needs waiting time, that is a sign they are doing it properly.

Weather: the biggest wildcard

Render is a wet material applied outdoors, and it is sensitive to the conditions while it sets.

Temperature. Many manufacturers set a minimum application temperature, commonly around 5°C — the product data sheet governs. It usually applies to both air and wall temperature, during application and for a period afterwards. Work usually stops when frost is forecast, because water in uncured render can freeze and damage it.

Rain. Fresh render, and especially thin-coat finishes, can be washed off or marked by rain before it has set. Crews watch the forecast closely and may stop for the day or switch to a sheltered elevation.

Heat and wind. Strong sun and drying winds can make render dry too quickly, leading to crazing and poor curing. In hot spells, crews often follow the shade around the house, start early, or shade the scaffold with sheeting.

Humidity. Damp, still conditions slow drying and can extend the gap between coats.

Some crews sheet the scaffold to keep working in marginal weather, but sheeting cannot overcome a hard frost. Plan for some lost days and treat any finish date as weather-dependent.

Does the time of year matter?

Yes. Late spring to early autumn usually offers the most reliable conditions, with fewer frosts and longer days. Winter work is possible in milder spells, often with preparation and repairs done first and finishes left for better weather, but stoppages are more likely. Exposed coastal and upland sites lose more days to wind-driven rain and frost in the shoulder seasons. Our guide to the best time to render covers seasons, weather limits and winter work in detail.

Why strip-and-re-render jobs take longer

Removing old render or pebbledash is often one of the largest additions to a timescale. It is noisy, dusty, physical work, done largely by hand with breakers and hammers, and it produces a lot of waste to clear.

Once the old surface is off, the wall underneath is revealed for the first time in decades. It may be sound, or it may need brick replacement, re-pointing, lintel repairs or the removal of old fixings. Those repairs have to be done and allowed to set before the new system goes on. Occasionally they also uncover problems that need a decision from you, which can pause work while you consider the options.

As a rough guide, stripping and repairing can add around a week or more to a typical semi, and more on larger or more complicated houses. RenderSmart specialists strip pebbledash only as part of a full re-render, not as a standalone job; our pebbledash removal cost guide explains what is involved.

Why lime projects take much longer

Lime render is applied in several coats, typically a scratch or base coat, a straightening coat and a finish. Each one needs to carbonate and firm up before the next goes on. That can mean days or weeks between coats, depending on the lime used, the thickness and the weather.

Lime also needs a gentler working season. It is vulnerable to frost while curing, and to drying out too quickly in sun or wind, so it is usually protected with hessian or sheeting and kept lightly damp. Many lime specialists avoid the coldest months altogether.

The result is that a lime job on a period cottage can take several weeks, and a larger house longer still. That is not inefficiency; it is the nature of the material. If you are considering lime, plan for a longer scaffold hire and ask your specialist how they phase the work. Our lime render cost guide covers the price side.

Crew size, scaffolding and access

A small, experienced team of two or three can work steadily through a typical house, but some stages need more people. A thin-coat finish or a monocouche elevation should ideally be applied in one continuous session to avoid visible joins, so larger elevations may need a bigger crew on finishing days.

Scaffolding has its own timetable. It is usually erected a day or two before rendering starts and stays up until the final inspection. If the scaffold is arranged so the crew can work round the house in sequence, progress is smoother. Where access is awkward — tight side passages, conservatories, neighbours’ land — it can take longer to erect, and occasionally needs moving partway through.

Because scaffold hire is often priced by the week, delays can affect cost. Ask whether scaffold time is fixed in the quote or charged if the job overruns, and who bears the cost of weather delays. Our scaffolding for rendering guide covers what to check, and rendering next to neighbours explains access where scaffold needs to go on or over adjoining land.

How far ahead do you need to book?

The time on site is only part of the story. Good renderers are often booked several weeks ahead, and in spring and summer that can stretch to a few months. The process before work starts usually runs something like this: an enquiry and survey, a written quote, a decision and deposit, a booked start date, and scaffold arrangements a week or so before the start.

Several things can lengthen the lead time. If your project might need planning permission — for example, a change of render colour or type in a conservation area — that has to be resolved first; see planning permission to render a house. If stripping back to masonry triggers building regulations requirements, building control may need notifying; see building regulations for re-rendering. Some colours and systems also need ordering in.

If you have a deadline, such as a house sale or a family event, tell the renderer at the survey. They can tell you honestly whether it is realistic.

How to keep your project on schedule

Much of what keeps a render job moving is in your hands before work starts.

Make decisions early. Agree the system, colour and texture before the start date, so materials are ordered in time and nobody is waiting on a choice.

Clear the walls. Move plants, trellis, bins, furniture and anything stored against the house. Ask whether satellite dishes, lights, cameras and signs need removing by you or another trade.

Sort other trades. If gutters, fascias, windows or roofline need replacing, do it before rendering, or coordinate it closely. Rendering around new windows is far easier than fitting new windows into fresh render.

Talk to neighbours. If scaffold needs to touch their land, get agreement in advance.

Keep access clear. Leave room for skips, mixers and deliveries, and for the crew to park if possible.

Agree how changes are handled. If extra repairs are found, know how they will be priced and approved, so the job is not left waiting while you decide.

Which delays are normal — and which are not

Normal: stopping for rain, frost or high winds; waiting for a coat to cure; a short pause while you decide on unexpected repairs; a day lost to a late material delivery. A good renderer will explain these as they happen.

Worth querying: a crew who disappear for days in good weather with no explanation, repeated no-shows, or a job that keeps being moved behind other work. It is reasonable to ask for a clear plan and regular updates.

A concern: pressure to apply render in conditions the product data sheet rules out, such as frost or heavy rain, just to stay on schedule. Getting it done fast is not worth a render that fails in its first winter.

Agree at the start how you will be kept informed, and ask for a written schedule with an expected start and a realistic completion range rather than a single fixed date. Our guide on deposits and payment stages explains how staged payments can line up with progress on site.

Red flags: when a schedule is too fast

A shorter timescale can look attractive, especially if you are paying for scaffold by the week. But a schedule that is much faster than other quotes can mean corners are being cut. Watch for these signs.

No curing time. Base coat and finish applied on the same day, or the next morning, on a system whose data sheet needs longer.

No preparation. A plan to render straight over hollow or loose old render, pebbledash or damp walls without investigating first.

No mesh or beads. Mesh embedding and bead fixing take time, so a quote that skips them can be quicker — and far more likely to crack.

Work in any weather. A promise to keep going regardless of frost or rain.

A whole strip-and-re-render in a few days. On anything bigger than a small elevation, that is rarely realistic.

Ask every renderer how long each stage takes and why. If one is far quicker, ask what they are doing differently. Our guide on questions to ask a renderer includes the key questions on preparation and specification.

Does a longer job cost more?

Not usually in a simple way. Render is normally quoted for the whole job, built up from the wall area, the system, preparation and access, rather than charged by the day. A job that runs a few days longer because of rain should not normally cost you more for the render work itself, though it is worth checking how scaffold overruns are handled.

What does link time and cost is scope. Stripping old render, extensive repairs and complex detailing all add days and add cost. As a guide, rendering a sound wall typically runs from indicative £35–£60 per m² for sand and cement to £65–£95 per m² for silicone systems, while stripping and re-rendering typically comes to indicative £100–£170 per m². By number of walls, one elevation is often around indicative £3,500–£5,000, two walls £5,000–£8,000, three walls £8,000–£12,000 and four or more £12,000–£17,000+.

indicative Ranges vary by region, specification and access. Not a quote.

See our house rendering cost guide and the render cost index for more detail.

When a quick job is not the right job

Sometimes the fastest option is genuinely fine — a small elevation of sound blockwork, rendered in good weather with a thin-coat system, can be done well in a few days. But there are situations where speed should come second.

Old solid walls. A Victorian or older house with solid walls may need a breathable render such as lime or a mineral system. Choosing cement because it is quicker can trap moisture and cause damp later. See is render breathable? for why this matters.

Walls with unknown problems. If there are cracks, hollow areas or damp, investigation time is time well spent. Rendering over an unresolved problem is the fastest way to a repeat job.

End-of-season starts. Starting in late autumn to save a few weeks can mean finishing in frost. Waiting until spring may be wiser.

Insulation decisions. If you are stripping back to masonry, it may be worth pausing to consider whether the wall should be insulated at the same time; see external wall insulation with render.

When the timescale isn’t really about render

Some projects are slow for reasons that have nothing to do with rendering. Structural repairs, roof or gutter replacement, new windows, planning decisions and party wall matters can all sit in front of the render work. If any of those apply, sort them first and book the renderer around them, rather than the other way round. If the real need is a small repair rather than a new render, the timescale is very different again; our repair or re-render guide helps you decide, and our exterior rendering guide covers the wider choices.

When you are ready for a proper timescale, SmartMatch™ weighs render-type experience, verified reviews, online reputation, insurance and accreditation to introduce you to one vetted local specialist for a free, no-obligation survey and written quote, including how long they expect your job to take — see how SmartMatch works. Most of our specialists take on projects from around £3,500, so they’re best suited to larger repairs and re-renders; for a single small job, a local builder or plasterer may be quicker.