Greater London · England

External Mastic in Motspur Park

External mastic across Motspur Park and nearby, with old sealant always removed completely.

  • Rigid filler in a joint that should flex
  • Damp patches traced to an open external joint
  • Brick movement joints where the sealant has split

External mastic in Motspur Park

External mastic in Motspur Park, done properly

Short cuts in external joints show up within a season or two. New sealant over old, joints packed with mortar and beads with no backing rarely last long. We take the old material out and do it properly. We work on façade panels, render & cladding joints and concrete & block, and common reasons people get in touch are failed seals between different materials and hard, crazed mastic that has stopped moving.

London’s terraces and conversions often share walls, gutters and downpipes with their neighbours, so a leaking gutter joint or failed wall joint can affect more than one home. For a flat in Motspur Park, check the lease for who looks after the outside.

Big or small, you get the same 12-month guarantee.

The Mr Mastic team in navy uniforms in front of three Mr Mastic vans
Where
Motspur Park (KT3, SW20, KT2)
Wider area
Greater London
Guarantee
12 months on all our work
Price
A clear quote up front
Phone
0345 464 0079
Updated
26 October 2026

When it is not the sealant

To be straight with you, some problems need a different trade:

  • Render that’s blown, hollow or coming away
  • Damp that isn’t coming from the joint
  • Cracking across the wall rather than at a joint

If you are not sure, just ring 0345 464 0079 or email us and we will give you a straight answer.

Joints and surfaces we work on

  • Copings & trims
  • Joints between brick and frames
  • Brickwork movement joints
  • Façade panels
  • Render & cladding joints
  • Concrete & block

Different surfaces, different methods

Render joints

The face of render can be soft, so a low-modulus sealant is kinder to the joint edges. We prime where the product needs it.

Copings and trims

Coping joints that leak let water straight down into the wall. Sealing them early saves the wall below.

Landlords, agents and businesses in Motspur Park

Housing providers, facilities teams and property managers book us too. We can quote a run of properties together, and we’re fully insured for the work.

Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements and we will quote.

DIY versus a professional finish

Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.

Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and getting the depth right matters as much as the look.

What happens on the day

Most of a good job is in the preparation, and we do not rush it. Every joint is cleaned and dried before new material goes in. In total, it generally takes a few hours to a few days, depending on the length of joint and the access. Many London jobs are in flats, so we come ready for stairs, narrow hallways and shared entrances. Mention any building rules, key holders or managing agents when you book.

  1. Each joint is checked and the colour of the new sealant agreed.
  2. We take out the old sealant until the faces are sound.
  3. Backing rod goes in so the sealant can stretch between the two faces.
  4. We prime the faces where required.
  5. We gun in low-modulus sealant and tool it neatly.

Getting ready for the visit

  • Keep children and pets away from the work area
  • On commercial sites, let us know about site rules
  • Mention any parking rules near the property

How to get a quote

We do not publish a price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To arrange one, phone 0345 464 0079 or drop us an email.

Get a quick quote

Related advice

Quotes for external mastic in Motspur Park

We quote each job individually. These are the things that affect it:

  • Which sealant suits the joint
  • Any working-time requirements on site
  • The number and length of the joints
  • Whether there’s mould to deal with

A few things move the cost up or down: the old material and how easily it comes out, whether mould needs treating, and whether we need extra access for height. Your quote takes all of that into account.

What to tell us for a quote

When you contact us, these details help:

  • The problem you’ve noticed
  • Whether it’s a home or a business
  • Roughly how big the job is
  • Pictures of the joints, sent by email

We quote each job on its own, so start by telling us what you need. Simply call 0345 464 0079 or send us an email and describe the job.

Motspur Park: your questions answered

Can parking be tricky for a visit in Motspur Park?

In much of London, parking needs planning: a visitor permit or a bay close to the door helps a lot, so mention what’s available when you book.

I let a flat near New Malden station. Can you help?

Yes, we work for letting agents and landlords. Just call 0345 464 0079 or send us an email and tell us about the property, and we will give you a clear quote.

Do you work at height?

Each building is different. Send us photos and a rough idea of the height, and we will confirm what access is needed.

Do you cover Motspur Park?

Yes. We’re based in Crawley and work across South East England, London and Scotland, and that includes Motspur Park.

How long does external mastic last?

That depends on the wall, the weather and the movement. Look for splits, hardening or edges coming away, and reseal at that point.

Which products do you use?

Quality sealants from brands including Arbo and Everbuild, chosen to suit the joint. We explain the product when we quote.

Are you fully insured?

Yes. We’re fully insured.

What information do you need?

Tell us what needs doing and where. If we need more, we’ll ask.

Why it’s worth doing now in Motspur Park

Resealing a run of joints in one go is usually better than patching one at a time. Joints of the same age tend to fail together, and access only has to be arranged once. In London conversions, one flat’s bathroom is often above another flat’s ceiling, so a small leak from tired sealant can mean a neighbour’s ceiling and a lot of disruption. Dealing with it early is far simpler.

Instead of a standard rate, we look at what your job involves: the amount of work, the old material and the access. The price is agreed before we begin.

Why Motspur Park clients choose us

  • We never seal over old sealant
  • 4.9 on Google from 180+ five-star reviews
  • Fully insured
  • Every job guaranteed for a year

Read our cost guide and customer reviews.

External mastic in Motspur Park: local notes

In terraces and conversions, gutters and walls are often shared with the neighbours, so it’s worth agreeing who is responsible before work starts. Historic houses like Southside House (about 0.8 miles north-east) are a reminder that the area around Motspur Park has older buildings as well as new. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material.

For an older house near a landmark such as Christ Church New Malden, old and new materials meet at the roofline and walls, which is where sealant earns its keep. As a London address, Motspur Park can be tricky for parking: tell us about permits, visitor bays or off-street space when you book. Letting a property close to New Malden station? Then failed wall and movement joints let damp in, so they’re worth checking between tenancies.

Motspur Park is about 2 miles south-west of Wimbledon, in Greater London. Wherever you are in the KT3 postcode area, we cover external mastic for homes and businesses. Our Greater London coverage runs to 764 places, Motspur Park among them. We also work in London, about 9 miles from Motspur Park.

Work in KT3, SW20 and KT2 is quoted and booked the same way as anywhere else. External mastic is available to properties on Traps Lane, Coombe Road and Coombe Lane. Being close to the A238, Motspur Park is easy for our applicators to reach for external mastic. Neighbouring places we cover for external mastic include New Malden (1 mile south-west), West Barnes (1 mile south-east), Coombe (1 mile north-west), Raynes Park (1 mile south-east) and Copse Hill (1 mile north-east). Within a short drive, we also cover London (9 miles north-east), City of Westminster (8 miles north-east), Marylebone (9 miles north-east), Kensington (7 miles north), St Pancras (10 miles north-east) and Shoreditch (11 miles north-east).

What’s near Motspur Park

Around Motspur Park, our work takes us to homes and buildings near The Royal Oak Public House, Beverley Park and Coombe Girls' School and the streets around them. For rail, the closest station is New Malden station, about 0.5 miles south-west of the centre. Well-known places in the area include Chessington Castle Hill (4 miles south-west) and Atkinson Morley Hospital (0.8 miles north-east). The countryside around Motspur Park includes Fishpond Wood and Beverley Meads and Kingston Hill Road area.

Map of Motspur Park © OpenStreetMap contributors
20+ yearsMastic and sealant specialists
ARBOMaster approvedApproved applicator for Arbo sealants
Fully insuredDomestic, commercial and hotels
One-year guaranteeOn every job