Kent · England

External & façade joints in Westwell, Kent

Specialist external mastic for Westwell: careful preparation, the right product and tidy work. Ask us for a quick quote.

  • Panel joints letting water in
  • Damp patches traced to an open external joint
  • Cracked joints where brick meets render or frames

External mastic for Westwell homes and businesses

Do you need external mastic in Westwell?

A lot of failed joints come down to preparation: joint faces that were dusty or damp, unprimed where they needed it, or still carrying old sealant. The sealant never bonds properly.

It’s worth asking for a quote if you see:

  • Gaps where render, brick and frames meet
  • Moss and dirt in joints with no sealant left
  • Water getting into walls through failed joints
  • Leaking joints around cladding and façade panels

In the older streets around Church of St Mary, an extension built onto an older house moves differently, and the joint between them takes the strain.

What your quote should include

  • Who turns up on the day
  • How hidden problems are handled
  • Whether they’re fully insured
  • What preparation is included

10 questions to ask before booking

How we handle external mastic in Westwell

External mastic is a job where short cuts show quickly. New sealant over old, joints packed with mortar and beads with no backing rarely last long. We strip the joint back and start again. If you have brick movement joints where the sealant has split and movement joints filled with mortar instead of sealant, we can put it right, whatever the surface.

External sealant needs dry, clean surfaces, so work around Westwell is planned for dry weather. Let us know about access to every wall, plus any garages or outbuildings.

Big or small, it’s backed by our one-year guarantee.

Where
Westwell (TN25)
Wider area
Kent
Cover
A year, on every job
Quote
A clear quote up front
Telephone
0345 464 0079
Page updated
26 October 2026
Eleven members of the Mr Mastic team standing in front of branded white vans

The process

When we get to you, we check the joints match what you told us. If anything is different, we explain it before carrying on. Most jobs then take a few hours for a handful of joints, longer for a whole elevation. For a village or hamlet like Westwell, the journey is planned in advance: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.

  1. First we look over the joints with you, agree which to renew and talk through access.
  2. Old sealant and any debris are cut and raked out.
  3. Both sides are cleaned back to sound material and primed if needed.
  4. Backing rod goes in next, setting the depth and keeping the sealant off the back of the joint.
  5. We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.

Before we arrive

  • Tell us about any water getting in
  • On commercial sites, let us know about site rules
  • Let us know about stairs, lifts or work at height

How to get a quote

For a quote, ring 0345 464 0079 or email us with the location and a short description of the problem. You will have a clear quote before any work starts.

Ask for a quote

Read more

What affects the quote in Westwell

The price is agreed before any work begins. It takes into account:

  • The product the joint needs
  • Whether old sealant or filler has to be cut out
  • How easy the joints are to reach
  • The size of the job

Every job is a little different, so we quote each one individually. Size, access and the product the joint needs all play a part.

What to tell us for a quote

To help us quote quickly, please include:

  • The address or postcode of the job
  • If someone has resealed it before
  • Pictures of the joints, sent by email
  • Access, such as stairs, a lift or height

If you’re in Westwell and need external mastic, phone 0345 464 0079 or drop us an email. Tell us what the problem is and where, and we’ll agree the price before any work begins.

Common questions in Westwell

Do you cover Westwell for external mastic?

Yes. We work across London and the South East, and Westwell is part of that. Just phone 0345 464 0079 or email us with a few details of the job, and we’ll send you a clear quote.

Do you cover smaller places like Westwell?

Yes, smaller places are covered as well as towns. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.

Where are you based?

Our base is Crawley, with over 20 years’ experience. We work across South East England, London and Scotland.

What should I tell you?

Let us know what needs doing and where, plus photos if you have them. We will ask anything else we need to know.

How often do external joints need resealing?

That depends on the wall, the weather and the movement. Signs to watch for are cracking, hardening and gaps at the edges, and reseal at that point.

Do you have insurance?

Yes. We are fully insured, with over 20 years’ experience in sealant work.

Are you ARBOMaster approved?

Yes. We’re ARBOMaster approved, the scheme for applicators of Arbo sealants.

Do the sealants smell?

There can be a smell while the sealant cures, but it fades. Ventilation helps.

Work for landlords, hotels and businesses

Housing providers, facilities teams and property managers book us too. Several sites can go on one quote, and we’re fully insured for the work.

We work for landlords and letting agents as well as householders. Resealing between tenancies keeps a property looking cared for.

How to look after the new joints

A little care helps the new joints last. We recommend:

  • Check the sealant is paintable before painting near it
  • Deal with leaking gutters that soak the joints below
  • Make sure movement joints are not pointed over
  • Keep high-pressure jets off the joints

Keep pressure washers away from the sealant. High-pressure water can lift the edges over time.

Leave a failed movement joint and water keeps getting into the wall. That can lead to damp patches, staining and frost damage, all bigger jobs than a reseal.

What happens if it’s left?

Resealing a run of joints in one go is normally better than patching one at a time. They’ve weathered the same way. Around Westwell, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.

There are no prices on our website, because each job is priced on what it involves. For a quick quote, please ring 0345 464 0079 or drop us an email and we will talk you through it.

What you get with us

  • Full insurance on every job
  • Neat joints and a tidy finish
  • Colour agreed with you before any work starts
  • Arbo and Everbuild products

Read our cost guide or what customers say.

Westwell buildings and the weather

Historic houses like Godinton House (about 2.3 miles south) are a reminder that the area around Westwell has older buildings as well as new. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth. London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.

For site and facilities teams at buildings such as The Hayesbrook School, larger buildings have long runs of movement joint that eventually need resealing. For landlords with property near Charing station, outside joints that have cracked can let damp into a rental, so check them between lets.

Westwell is about 4 miles north of Ashford, in Kent. Our applicators cover external mastic for homes and businesses in Westwell and the surrounding area. Westwell is one of 922 towns and villages in Kent where we work. Our Chelmsford page covers work nearby (41 miles or so).

All of TN25 is covered for external mastic, from the main roads to the quietest streets. We also cover the places around Westwell: Tutt Hill (1 mile south-west), Ram Lane (1 mile west), Potters Corner (1 mile south), Westwell Leacon (2 miles west) and Hothfield (2 miles south-west). We also work in nearby towns such as Maidstone (15 miles west), Ashford (4 miles south), Canterbury (12 miles north-east), Sittingbourne (11 miles north-west), Whitstable (14 miles north-east) and Faversham (9 miles north).

What’s near Westwell

The closest station to Westwell is Charing station, roughly 2.6 miles north-west of the centre. Other landmarks nearby include County Square (3.2 miles south) and William Harvey Hospital (4.6 miles south-east).

Map of Westwell © OpenStreetMap contributors

Different surfaces, different methods

Brickwork movement joints

People sometimes point up a brick movement joint by mistake. Where one has been mortared, we cut it out and reseal it with sealant where it can be done safely.

Concrete and blockwork

Big joints in concrete need careful depth control. Backing rod sized to the joint sets it.

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