West Berkshire · England

External & façade joints in Donnington, West Berkshire

We cover Donnington for sealing brickwork movement joints, render, cladding and façade joints. Old material cut out, joints cleaned and sealed neatly and every job guaranteed for a year.

  • Failed sealant between panels on a façade
  • Plants rooting in failed movement joints
  • Movement joints filled with mortar instead of sealant

Book external mastic in Donnington

External mastic in Donnington, done properly

Many failed façade joints only get noticed once there’s a stain or a damp patch inside. We inspect them, agree which need doing and reseal with a weatherproof, flexible sealant in a matching colour. We work on façade panels, render & cladding joints and joints between brick and frames, and the jobs we see most are sealant that has lost its bond to the brick or render and cracked joints where brick meets render or frames.

Older homes in small places like Donnington may be stone, brick or timber-framed, often with later extensions. The joints where those materials meet are the weak points, and they need the right sealant at the right depth.

Your job is guaranteed for a year, as with all our work.

Outdoor mastic being applied where a white frame meets red brickwork, below the fascia and gutter
Place
Donnington (RG14)
Region
West Berkshire
Guarantee
A year, on every job
Quotes
Quoted before any work starts
Phone
0345 464 0079
Last updated
26 October 2026

Looking after it afterwards

Joint life depends on how it’s used and looked after. Here’s what we suggest:

  • Look over the joints every year, ideally after winter
  • Get split or bare joints resealed while the damage is small
  • Clear growth from the base of walls and joints
  • Check the sealant is paintable before painting near it

Don’t let soil, plants or ivy build up against the new joints. Damp material against the sealant shortens its life.

Gaps, plants or missing sealant in a joint are worth getting looked at. Earlier resealing means a smaller job and a better result.

What we’re called out for in Donnington

Many joints fail because they were sealed too deep or with nothing behind them. If the sealant sticks to the back as well as the sides, it can’t stretch and tears as soon as the joint widens.

The problems people usually mention when they call include:

  • Weathered mastic that no longer stretches
  • Sealant that has lost its bond to the brick or render
  • Water getting into walls through failed joints
  • Brick movement joints where the sealant has split

In the older streets around Parish Church of St Mary, older walls, gutters and the joints where extensions meet them need a flexible sealant.

Before booking anyone

  • What preparation is included
  • How the colour is chosen
  • Who does the work, and how experienced they are
  • How long the guarantee is

10 questions to ask before you book

What happens if it’s left?

Water gets in through a failed movement joint. Dealing with it early keeps the repair to the joint, instead of the wall and finishes around it. Older cottages and farmhouses around Donnington can have timber floors and frames, where water from a failed joint can cause rot if it’s left.

No two jobs are quite the same, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all make a difference.

Why Donnington customers choose us

  • Quality sealants from Arbo and Everbuild
  • A 12-month guarantee on all work
  • Anti-fungal silicone where joints get wet
  • More than 20 years in sealant work

Take a look at what affects the cost or what customers say.

Walls and rooflines in Donnington

With historic houses such as Shaw House (about 0.7 miles south-east) nearby, there’s older building stock in the area around Donnington as well as newer homes. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth. Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.

Schools such as Shaw-cum-Donnington C.E. Primary School are buildings too, and larger buildings have long runs of movement joint that eventually need resealing. Letting a property close to Newbury station? Then failed wall and movement joints let damp in, so they’re worth checking between tenancies.

Donnington is about 1 mile north of Newbury, in West Berkshire. Donnington gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a one-year guarantee. Donnington is one of 155 places in West Berkshire where we work. Our Reading page covers work nearby (15 miles or so).

Our applicators cover all of RG14 for external mastic. External mastic is available to properties on The Orchids, The Redcoats and Cannon Close. If you are just outside Donnington, we cover Speenhamland (1 mile south), Shaw (1 mile south-east), Bagnor (1 mile south-west), Speen (1 mile south-west) and Stockcross (2 miles west). Within a short drive, we also cover Thatcham (3 miles east), Burghfield Common (12 miles east), Hungerford (8 miles west), Calcot (12 miles east), Lambourn (11 miles north-west) and Burghfield Hill (12 miles east).

Near you in Donnington

In Donnington, that means homes and buildings near Trinity School, Victoria Park and The Castle pub and the streets around them. The closest station to Donnington is Newbury station, about 1.5 miles south. Nearby you will also find Donnington Castle (within half a mile west) and West Berkshire Community Hospital (1.9 miles south-east). Open spaces near Donnington include Rack Marsh.

Map of Donnington © OpenStreetMap contributors

Landlords, agents and businesses in Donnington

If you manage several properties in or around Donnington, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs.

We also work for property managers and facilities teams in Donnington and across West Berkshire. Several sites can be quoted together, and we are fully insured for the work.

What happens on the day

The work is kept neat and contained to the area we are working on. The job normally takes a few hours to a few days, depending on the length of joint and the access, and we explain the cure time before we leave. In a small place like Donnington, access is usually the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.

  1. We start by walking round the building and agreeing the joints and the access.
  2. We cut out the old mastic and rake out anything in the joint.
  3. The faces are brushed clean and primed where the product requires it.
  4. Backing rod sized to the joint goes in to set the depth.
  5. We apply the sealant, tool it and check the whole run.

Getting ready for the visit

  • Mention any sign-in or site rules at work premises
  • Try not to wet indoor joints just before the visit
  • Let us know about parking restrictions

Getting a quote

There’s no standard price list, because every job is different. Instead, we give you a clear price for your job. To get started, phone 0345 464 0079 or email us.

Ask for a quote

Advice

What affects the cost of external mastic

Jobs vary more than people expect. What affects the quote:

  • The number and length of the joints
  • The type of sealant required
  • Any working-time requirements on site
  • Whether old sealant or filler has to be cut out

There are no prices on our website, because the cost depends so much on the job itself. Call for a quick quote.

What to tell us for a quote

The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:

  • What’s wrong with the joints now
  • Whether it has been sealed before
  • How we’d reach the joints
  • The type of property

Asking for a quote is easy: let us know the job and the location, and roughly how big it is. Photos by email help us understand the job, and we’ll take it from there.

Donnington questions

Do you cover Donnington for external mastic?

Yes, Donnington is within the area we cover. Our work covers London and the South East. Just call 0345 464 0079 or drop us an email with a few details of the job.

Do you cover smaller places like Donnington?

Yes, Donnington is covered. Our work covers London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.

How often do external joints need resealing?

There’s no fixed answer: joints on exposed walls or with a lot of movement age sooner. Check them each year and reseal when they split or harden. Every job carries our one-year guarantee.

Can new sealant go over the old?

No, it won’t last. It can look neat for a few weeks, but the new bead soon lifts. The old sealant has to come out completely.

Is it worth trying it myself?

For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. Most DIY failures come from sealing over old material, wet joints or too much sealant.

Can you work on commercial sites?

Yes. Commercial and hotel work is a large part of what we do. We can talk about working times when we quote.

Will there be a smell?

Sometimes, a little. It fades as the sealant cures, and ventilation helps.

Do you work for landlords and businesses?

Yes. We work for homeowners, landlords, letting agents, businesses and hotels in Donnington.

Different surfaces, different methods

Render joints

Water behind render can lead to blown patches. Resealing the joints early keeps water out and helps it last.

Cladding and façade panels

Panels heat up and cool down quickly, so the joints work hard every day. We choose the product to suit.

20+ yearsMastic and sealant specialists
ARBOMaster approvedApproved applicator for Arbo sealants
Fully insuredDomestic, commercial and hotels
One-year guaranteeOn every job