Rendering in Upton, and render over insulation
Once the scaffold is up and the old coat is off, insulation behind the new render costs a fraction of what it costs as a job on its own.
The site visit is free and so is the written itemised quote. Thomas Hannen prices every job himself.
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Rendering in Upton is repair, re-render and render over insulation. Cracked or blown render is cut back and patched where the rest is sound. Where a wall is coming back to the brick anyway, that is the cheapest moment to add insulation: the scaffold is up, the old coat is off, and a silicone or monocouche can go over insulation board as easily as bare masonry. For inside walls, see plastering in Upton.
It is worth raising here because so much of Upton is post-war terraced and semi-detached housing with narrow cavities and cold north facing gables. A failed render is a good moment to ask a better question: what the wall could be doing for you once it is opened up.
We price both ways so you can see the difference rather than take our word for it: the straight re-render, and the same elevation with external wall insulation behind it. Both go in a written itemised quote with the access, the preparation, the boards where they apply, each coat and the beads on separate lines. The visit and the quote are free.
The work
Re-render, or render over insulation
Tapping the elevation comes first. A mallet goes over the whole of an Upton wall with the hollow areas chalked, before any conversation about systems. How much of the existing coat is still bonded decides whether this is a repair, an overlay or a strip back, and everything else follows from that.
Hacking off and preparing the background. Blown render on an Upton house comes off to a firm edge, the brickwork behind is made good, old chases and patched openings are filled and a key is formed. Anything friable is brushed down and stabilised with a primer.
External wall insulation with a render finish. Insulation board is fixed and mechanically anchored to the prepared wall, a mesh reinforced basecoat goes over it, then a primer and a silicone topcoat. Where the wall or the detailing suits it better, a render carrier board takes the same build. It is building control work, and the thickness has consequences at every reveal, sill and eaves, so it is detailed before it is priced.
Straight re-render in silicone thin coat. Without insulation, the same basecoat and topcoat go directly onto the prepared wall. Through-coloured, breathable and flexible, and on the post-war housing here it is the usual choice.
Monocouche and traditional sand and cement. Monocouche in one build, scraped back the next day, for a heavier grain. Sand and cement where an elevation is being matched into an existing scratch and float build, or where a dashed finish is being repaired rather than replaced.
Pebbledash and Tyrolean repairs. Cut back to a firm edge, floated to thickness and re-dashed with matched aggregate. New dash reads lighter than weathered dash for a couple of seasons, so on a frontage it is often better to take the whole face.
Beads, bellcast and the detail around openings. Angle beads at the corners, stop beads at the reveals and a bellcast at the base. On an insulated wall this is where the work is won: the reveals get thinner board, the sills often need extending, and the eaves and verge details have to accommodate the extra thickness.
Cracking, delamination and staining. Cracks are cut out, meshed and made good before frost gets behind them. A coat that has parted from the wall comes off rather than being covered. Green algae on a shaded gable is surface growth and a wash with a treatment and a breathable coating clears it.
How it runs
Re-rendering an Upton elevation, or wrapping it in insulation
Thomas comes out, taps the render across each elevation and prices it himself. Houses from Upton's main building years often carry pebbledash, a painted sand and cement, or a rendered panel under the windows, and it is the hollow patches that decide the work.
The quote lists access and scaffold, protection, preparing the existing wall, the system and the number of coats, beads and stop ends, and making good, each separately. Thomas is your one contact from hacking off to finish.
On an Upton job, windows, doors, paths and plants are sheeted before anything is hacked off. Render is a wet trade, so we work to the weather and leave nothing half-coated overnight. Waste goes daily, and the scaffold is only up as long as it needs to be. If the wall behind is worse than the tapping showed, a photograph and a price reach you first.
A patch repair is maintenance and needs no application. Re-rendering most of an elevation, or adding external wall insulation, goes through building control, and Approved Document L sets the Part L standard for the finished wall. Upton has no conservation area, though listed building consent applies at a listed address. The extra thickness changes the reveals and the eaves, so that detail is drawn and agreed before anything is ordered.
Cost
What sets a rendering price on post-war BH16 walls
We do not quote per square metre. The area is easy to measure; what is already on the wall decides the price.
The platform. A mid terrace with everything carried through the house, a semi with a side path, and an end of terrace gable onto a shared drive are all different set ups. A bungalow gable comes off a tower. A two storey elevation wants a scaffold that stays for the whole system, and the work at height rules make that a priced line.
What is coming off. Sound brick in Upton can take render straight on. Blown sand and cement, or pebbledash that has parted from the wall, has to be hacked off first, and that is the cost nobody can see from the road. We tap before quoting.
Which system. Silicone thin coat over insulation, monocouche through-coloured render, and traditional sand and cement all price and behave differently. Most Upton walls are cavity brick and suit any of them. A solid wall on one of the older houses needs a system that can breathe, or the moisture ends up indoors.
Details. Beads, a bellcast over the damp course, stop ends, sills, and pipework that has to come off and go back all take time.
Ask other quotes which system and how many coats, whether old render is hacked off or overlaid, and whether the scaffold is included.
If it has started to come away
Render blowing, or cracking open
Phone us rather than using the form. A patch that sounds hollow when you tap it, or a crack you can slide a coin into, is letting water behind the render, and frost will push more off. If a piece is loose above a door or a path, keep people clear of it.
We make the loose area of an Upton wall safe, sheet it if rain is coming, and price the elevation once we know how far the blown area runs. Booked rendering is done Monday to Friday, 8am to 6pm. If render is coming away, ring, and if we do not pick up we get back to you as soon as we can.
Worth knowing
The cheapest time to insulate a wall is while it is bare
Half the homes in Upton went up between the war and the early eighties, which is the era of the narrow cavity and the uninsulated gable. Those walls lose a lot of heat, and the usual reason people never do anything about it is that external wall insulation carries a scaffold, a strip back and a new finish before a single board goes on. All three of those are already in a re-render.
So the comparison to make is not insulation against nothing. It is insulation against the re-render you were going to pay for anyway. Once the access, the hack off and the render are in both columns, the extra is the boards, the fixings and the extra care at the reveals, and that is a much smaller number than a standalone job.
Thickness needs thinking about first. Insulation pushes the face of the wall out, so window reveals get deeper, sills usually need extending and the eaves, verge and rainwater goods have to be looked at. Done properly it looks right and done cheaply it looks like a wall with something stuck on it. Then there is the fabric: on a solid wall the build has to stay breathable, or you have simply moved the moisture problem to the inside face.
Who you are dealing with
Who renders your house
Thomas Hannen runs Bournemouth Roofing & Building Ltd, registered in England and Wales, company number 15471719, from a base in Boscombe 8.5 miles from Upton. We cover Upton, Lytchett Minster, Hamworthy, Creekmoor and Corfe Mullen. Before you book a visit in Upton, you can read our customers' Google reviews, word for word, on our reviews page.
For an Upton address, planning and building control sit with Dorset Council, which matters if you are insulating as well as rendering. Thomas taps the walls and prices the job himself, so the person who quotes is the person answerable for it. You can see a verified 10 out of 10 from a customer on Checkatrade. The visit costs nothing and the itemised written quote is free.
Planning at a glance
Do you need planning permission in Upton?
Most repairs in Upton need no application at all. What decides whether a change to the outside of your house does is who the council is, whether a conservation area or a listing applies, and whether the place sits in a protected landscape.
| Question | In Upton |
|---|---|
| Who decides | Dorset Council is the planning authority for Upton. Dorset Council's heritage pages set out what it controls. |
| Conservation area | None covers Upton, so a like-for-like repair is ordinary maintenance. |
| Listed buildings | Yes, there are listed buildings in and around Upton. If yours is one, work can need listed building consent. |
| Protected landscape | No National Park or National Landscape covers Upton. |
Questions
Questions about rendering in Upton
Is it worth adding insulation while the render is off?
Usually, yes. The scaffold, the strip back and the new finish are in the price either way, so the extra is the boards, the fixings and the detailing. As a standalone job later it costs far more, because you pay for all of that again.
Does external wall insulation need building control approval?
Yes. Insulating an external wall is controlled work under the building regulations, and Approved Document L sets the standard the improved wall has to reach. A patch repair does not, but re-rendering most of an elevation counts as renovating the wall, so Part L applies to that too.
How much thicker does the wall get?
Enough to notice at the openings. Reveals become deeper, sills usually have to be extended and the eaves and verge details need adjusting. We draw those before ordering so the finished house looks designed rather than padded.
Can insulation go on a solid wall?
It can, but the whole build has to stay breathable, boards and render alike. Seal a solid wall in an impermeable system and the moisture that used to leave through the face ends up on the inside instead.
Will it look different from a normal rendered house?
Not from the road, if it is detailed properly. The finish is the same silicone or monocouche topcoat. What gives a bad one away is the openings, which is why the reveals and sills take the extra time.
Nearby, and next door
Rendering near Upton
Nearby places we also cover for rendering, with straight-line distances from Upton, and the other trades we offer in Upton itself.
Rendering nearby
Our other trades in Upton
Rendering guides
Silicone, cement or lime: which render? Cracked render: which cracks matter Listed building consent for repointing and re-renderingEverything we do in Hamworthy Rendering, all areas Every area we cover
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Get the elevation priced both ways before you decide
Thomas comes out, taps the wall and prices the straight re-render and the insulated build side by side in writing. The visit and the quote are free.