Rendering in Iwerne Minster, lime as the default
Iwerne Minster has a lot of old houses, so on this village street the safe starting assumption is a solid wall until we prove otherwise.
The site visit is free and so is the written itemised quote. Thomas Hannen prices every job himself.
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Rendering in Iwerne Minster starts from one assumption: a solid, breathable wall until we prove otherwise. Many houses here predate 1919, so cracked or blown cement render usually comes off and goes back in lime, and small areas are patched in lime, never filled with cement. Newer cavity houses can take a silicone thin coat or monocouche. The village is a conservation area, so a change of finish is worth asking about. Damp plaster inside is a plastering repair.
In Iwerne Minster the faults are a hard grey render cracked and hollow on an old cottage, damp on an inside wall that has been decorated twice already, or a tired elevation that somebody wants brought back without knowing what it should be done in.
Each of them starts the same way in Iwerne Minster, by tapping the elevation and establishing what is behind it. The work is then set out in writing, stage by stage, with the scaffold, the hack off, each coat, the beads and the waste on separate lines so you can see what you are buying.
The work
How a full elevation actually runs, stage by stage
Survey and scaffold come first. The whole face of an Iwerne Minster house is tapped before a price is written, because the hollow percentage sets the hours. Once booked, the scaffold goes up first and stays for the duration, sheeted where the weather or the dust needs it. On a cottage tight to the street the footway is managed as part of the setting up, not on the day.
Hacking off and preparing. The blown render on an Iwerne Minster wall comes off to a firm background. On soft old brick or a rubble wall that is careful work with hand tools, not a breaker. Then we clean down, prepare, stabilise anything friable with a primer and cut a key where the face is too smooth. Spalled arrises are cut out and made good, and old chases and filled openings dealt with so they do not read through the finish.
The basecoat. On a period solid wall in Iwerne Minster this is a haired lime coat worked into the background and ruled out, left to take up over days rather than hours and protected from sun and frost. On a modern cavity wall it is a mesh and scrim reinforced basecoat over a primer. Either way the basecoat decides how long the job lasts, and it is the one nobody sees.
The topcoat and the finish. Lime gets a soft topcoat and then limewash or a breathable mineral paint, renewed every few years as ordinary maintenance. A modern wall gets a through-coloured silicone topcoat scraped or floated to a texture chosen off a sample board, or monocouche where a long plain elevation suits it. Pebbledash and Tyrolean can be thrown back where that is the existing character. Acrylic and polymer rich finishes craze and belong on no old wall. the published guidance on lime and cement renders sets out why.
Beads, edges and the base. A bellcast bead at the bottom throws water clear of the plinth, stop beads finish the render at reveals and verges, and stainless is used wherever the wall gets wet, because galvanised rusts through and leaves staining down the face. On a lime job the arrises are often run by hand. Where the render stops is where the job is judged from the pavement. Cracking that takes a coin gets cut out rather than filled, since a coat that has begun to delaminate keeps going, and green algae on a shaded elevation is a clean, not a render job, unless the wall is wet.
Making good and clearing. Downpipes, brackets, meter boxes and outside taps go back on, the ground is cleaned off and the scaffold comes down. If EWI was part of it, external wall insulation board and a render carrier move the face out and the sills, reveals and eaves move with it, with Part L setting the thermal standard. Everything that came off leaves with us.
How it runs
Hacking off cement and going back to lime on a solid wall
Thomas taps his way across each elevation to find where the render has come away, then prices it himself. On an older solid wall in Iwerne Minster the usual story is a cement render that has cracked and held water in, and the right answer is to take it off and go back to lime.
A post-war cavity wall in Iwerne Minster may suit a modern system. His quote sets out scaffold, sheeting and protection, hacking off and preparing the background, which render and how many coats, the beads and stop ends, and making good round windows and pipes.
Windows, doors and paths are covered, and the scaffold stays until the last coat has cured, because lime cannot be hurried. Sheeting keeps frost and hot sun off it. Rubble leaves every day. If the wall behind is loose or wet, work stops until you have a photograph and a price for putting it right.
Iwerne Minster sits in the Cranborne Chase National Landscape, so appearance carries weight. On an unlisted house, repairing the existing render like for like is maintenance, but rendering an external wall that is bare now, or changing the finish, needs planning permission here, because the conservation area and the National Landscape both remove that right. For a listed house the render is protected fabric, so listed building consent comes first, and a lime specification is put in writing for the conservation officer.
Cost
Nobody can price render without tapping every wall first
No honest render quote starts from a rate per square metre. The price is set by what is on the wall now, not by how big the wall is.
What has to come off. New render on sound brick is straightforward. Old cement that has let go, or pebbledash that has parted from the wall, has to be knocked off first, and you cannot see how much from the lane. Thomas taps the whole elevation before writing a figure.
The right render for the wall. Lime, sand and cement, a through-coloured monocouche and a thin silicone coat over insulation all cost different amounts and behave differently. On old flint or cob, anything that stops the wall breathing pushes damp indoors.
The platform. A bungalow gable can be done off a tower. Anything taller needs a scaffold that stays up through every coat, and it appears as its own figure because of the work at height rules.
Finishing details. A bellcast bead above the damp course, stop ends, reveals, sills and refixing downpipes and cables all take time.
Ask the other firms whether they are stripping the old render or going over it, what system and how many coats, whether bellcast and beads are in, and whether the scaffold is included.
If it has started to come away
Render hollow to the tap or cracked wide open
Ring instead of using the form if the render sounds drummy when you knock it, if a crack has opened wide enough to see into, or if pieces are coming off. Once water is behind it, frost does the rest.
On an old solid wall carrying hard cement, that water cannot dry outwards, so it comes inside, and waiting for spring makes it worse. The first visit takes down anything loose, makes the area safe and sheets the wall if the weather is against us. The repair is priced once we know how far the hollow patch spreads. Scheduled work runs Monday to Friday, 8am to 6pm. If nobody answers, we will be back in touch as soon as we can.
Worth knowing
Assume a solid wall here until somebody proves otherwise
Many of the houses in Iwerne Minster were built before 1919, and that one fact should shape how you approach a render quote in this village. A pre-1919 house has solid walls, no cavity and no reliable damp course. It stays sound by taking in a little water and letting it out again through its own face, so moisture is never trapped, which is why it was originally finished in lime or left bare.
The consequence is a test you can apply to anyone pricing your job. Ask what your wall is made of before you ask what the render will cost. If the answer is a system name, a colour chart and a rate with no mention of the background, the quote is for a product, not for your house. A hard modern coat on one of these walls performs well for ten or twelve years, long enough for everyone to have moved on, and then damp appears inside and the render comes away in sheets with the face of the wall attached. Getting that right at the start is worth more than any other choice on the job, colour included.
Who you are dealing with
Who prices the render on your house
Iwerne Minster lies 20.8 miles from our base in Boscombe. We render in the village and in Shroton, Child Okeford, Fontmell Magna and the other DT11 villages under the Chase; Dorset Council deals with planning and building control.
Our company is Bournemouth Roofing & Building Ltd, registered in England and Wales as number 15471719. Thomas Hannen owns it, and he taps your render and works out the price himself. Look us up on Checkatrade and you will see a verified customer's 10 out of 10. The visit to your house and the written quote, itemised line by line, are both free. Before you book a visit in Iwerne Minster, you can read our customers' Google reviews, word for word, on our reviews page.
Planning at a glance
Do you need planning permission in Iwerne Minster?
Most repairs in Iwerne Minster 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 Iwerne Minster |
|---|---|
| Who decides | Dorset Council is the planning authority for Iwerne Minster. Dorset Council's heritage pages set out what it controls. |
| Conservation area | Yes: Iwerne Minster Conservation Area. Check whether your street is inside the boundary before changing anything visible. |
| Listed buildings | Yes, there are listed buildings in and around Iwerne Minster. If yours is one, work can need listed building consent. |
| Protected landscape | Inside the Cranborne Chase & West Wiltshire Downs National Landscape (formerly AONB), so anything visible from outside gets more attention. |
Questions
Questions about rendering in Iwerne Minster
How do we know whether our wall is solid?
Wall thickness at a window reveal is the quickest check, with the brick bond on any uncovered section. A solid wall is usually about nine inches through with headers showing. Where everything is rendered we take a small square off out of sight on the site visit.
Why does lime take so much longer than cement?
Because it sets slowly, and that is the point of it. Each coat goes on thinner and has to be left to take up, so a two storey face is often three weeks, not one. The scaffold stays up throughout and gets sheeted if the weather turns.
Can lime render be coloured?
It can be pigmented, and more often it is limewashed in a colour instead, which is a coat you renew instead of a permanent finish. The palette is softer than a modern through-coloured render and it moves with the light, which is part of why it suits these buildings.
Is it worth patching rather than doing a whole elevation?
Frequently, on lime: new lime knits into old, so a patch disappears once it has weathered. On cement it rarely works, because the patch is harder than what surrounds it and the crack reappears at the join within a couple of winters.
Will the conservation area stop us changing the finish?
Not automatically: it means the change gets considered, not assumed. Like for like repair is maintenance. A different texture, material or colour is worth asking about first, and on a listed building that is a consent rather than a conversation.
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Get the wall identified before anyone names a system
Thomas comes out, taps the elevation, works out what the background is and prices the right specification for it stage by stage. The visit and the written itemised quote are free.