Greater London · England
Wimbledon Park External Mastic
External mastic in Wimbledon Park from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Movement joints with cracked, split or missing sealant
- Water getting into walls through failed joints
- Movement joints filled with mortar instead of sealant
Why it’s worth doing now in Wimbledon Park
A properly done movement joint is an even line in a colour that suits the wall. A hurried job with smeared edges and no backing looks worse and fails sooner. Damp from a failed joint spreads quietly in older London brickwork and timber, and by the time it shows on a wall or ceiling in Wimbledon Park, the repair is bigger than the sealant job would have been.
There are no prices on our website, because the cost depends so much on the job itself. Call for a quick quote and we’ll talk you through it.
Why choose Mr Mastic in Wimbledon Park
- Sanitary silicone with an anti-fungal additive in wet areas
- Experience in homes, commercial sites and hotels
- 12-month guarantee on every job
- Over 20 years’ experience
Take a look at what affects the cost and customer reviews.
How we handle external mastic in Wimbledon Park
For buildings in Wimbledon Park, we reseal external joints of all kinds, from brick movement joints to cladding panels. Every joint gets the same careful preparation: clean, sound faces and a controlled depth. If you have damp patches traced to an open external joint and gaps where render, brick and frames meet, we can put it right, on concrete & block, render & cladding joints and brickwork movement joints alike.
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. In a converted house in Wimbledon Park, it’s worth checking who is responsible for the outside before booking.
Our work is backed for twelve months, and the guarantee is the same wherever you are.
- Location
- Wimbledon Park (SW19, SW18)
- Region
- Greater London
- Cover
- A year, on every job
- Price
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
What we cannot put right
Honest advice matters more to us than a booking, so here’s what new sealant won’t do:
- Rising or penetrating damp from elsewhere in the wall
- Adding movement joints to masonry that has none
- Loose or hollow render, which needs re-rendering
Not sure which it is? You can phone 0345 464 0079 or email us and we’ll tell you honestly before you book.
Joints and surfaces we work on
- Brickwork movement joints
- Façade panels
- Copings & trims
- Concrete & block
- Joints between brick and frames
- Render & cladding joints
How to look after the new joints
Looking after new joints is easy:
- Don’t let climbing plants root in the sealant
- Make sure movement joints aren’t pointed over
- Tell anyone working on the walls about the movement joints
- Check external joints each spring
Don’t let soil, plants or ivy build up against the new joints. Anything that holds water against the joint wears it out sooner.
Act while the splits are small. At that stage it’s a simple cut out and reseal with no damage behind it to deal with.
Walls and rooflines in Wimbledon Park
London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. In terraces and conversions, gutters and walls are often shared with the neighbours, so it’s worth agreeing who is responsible before work starts.
In the older streets around Church of St Luke, old and new materials meet at the roofline and walls, which is where sealant earns its keep. As a London address, Wimbledon Park can be tricky for parking: let us know about parking bays, permits or a driveway. For site and facilities teams at buildings such as Albemarle Primary School, larger buildings have long runs of movement joint that eventually need resealing.
Wimbledon Park is about 1 mile north of Wimbledon, in Greater London. If you need external mastic in Wimbledon Park, please call 0345 464 0079 or email us for a quick quote. We’re based in Crawley and cover Greater London, Wimbledon Park included. Our area takes in 764 places across Greater London, large and small. There’s also a page for London, about 7 miles away.
Here we cover the SW19 and SW18 postcode area for external mastic. Whether your property is on Dora Road, Church Road and Arthur Road or anywhere close by, we can help. Wimbledon Park sits on or near the A218. We also cover the places around Wimbledon Park: Wimbledon (1 mile south), Crooked Billet (1 mile south-west), Copse Hill (2 miles south-west), Merton Park (2 miles south) and Wimbledon Chase (2 miles south). We also work in nearby towns such as London (7 miles north-east), City of Westminster (6 miles north-east), Marylebone (6 miles north-east), Kensington (4 miles north), St Pancras (7 miles north-east) and Shoreditch (8 miles north-east).
Around Wimbledon Park
Typical jobs here are in homes near Ricards Lodge High School, Linden Lodge School and King George's Park. Wimbledon Park’s nearest station is Earlsfield station, about 1 mile north-east. A little further out are Royal Hospital for Neuro-disability (1.1 miles north) and Southside Wandsworth (1.4 miles north-east). Not far away are Battersea Park Lake and Wandle Meadow Nature Park.
Questions from Wimbledon Park
Is parking a problem for a job in Wimbledon Park?
Parking in Wimbledon Park, as in most of London, takes a little planning: a visitor permit or a nearby bay makes the day run more smoothly, so mention what’s available when you book.
Is Wimbledon Park in your area for external mastic?
Yes. Our work covers London and the South East, and Wimbledon Park is part of that. Just phone 0345 464 0079 or email us with a few details of the job.
Do the sealants smell?
Some sealants have a smell while they cure, which fades as it sets. Opening a window helps.
Do you hold any approvals?
Yes. We are ARBOMaster approved, the scheme for applicators of Arbo sealants.
What do you put in the joint?
Each joint gets the product that suits it. Movement, water and weather all affect the choice, and we’ll tell you what we are using.
Are you insured?
Yes, we’re fully insured for domestic and commercial work.
What is backing rod for?
That is backing rod, a closed-cell foam. It stops the sealant going in too deep and bonding to three sides, which would stop it stretching.
How long should I leave it?
Most sealants are touch-dry well before they’re fully cured. We’ll tell you how long to leave the joint.
What happens on the day
A visit follows a simple pattern: we check the joints, protect the area around them, do the work and clear up. Most jobs take anything from a few hours to several days, depending on the building. Many London jobs are in flats, so we come ready for stairs, narrow hallways and shared entrances. If the building has a concierge, managing agent or access rules, tell us when you book.
- We look at every joint and agree a colour to suit the wall.
- Failed sealant is removed back to clean, sound faces.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- We prime the faces where required.
- We gun in low-modulus sealant and tool it neatly.
How to prepare
- Where the joints are inside, avoid wetting them before we arrive
- Let us know if you’ve seen damp or leaks
- Let us know about parking restrictions
How to get a quote
It all starts with a short chat. Describe the problem, the location and the size of the job. Whenever you’re ready, phone 0345 464 0079 or drop us an email.
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Also near Wimbledon Park
More services for Wimbledon Park
Work for landlords, hotels and businesses
Whether it’s one flat or a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance that we can handle for you.
How the job changes by surface
Render joints
Cracks along render joints let water in behind the coat. Resealing the joints early keeps water out.
Copings and trims
A failed coping joint lets water into the top of the wall. Sealing them early saves the wall below.
Should I try it myself first?
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and doesn’t move well, and getting the depth right matters as much as the look.
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.