Greater London · England

External & façade joints in Maze Hill, Greater London

Problem with your movement joints in Maze Hill? We remove the old material, prepare the joints and seal them properly, with a 12-month guarantee.

  • Brick movement joints where the sealant has split
  • Plants rooting in failed movement joints
  • Failed sealant between panels on a façade

Need external mastic in Maze Hill?

What the job involves on each surface

Cladding and façade panels

Panel systems often rely on sealant between and around the panels. We reseal them with a sealant suited to the panel material.

Copings and trims

Joints in copings, parapets and trims are exposed to the worst of the weather. Each is resealed with a weatherproof, flexible sealant.

External mastic for homes and businesses in Maze Hill

On houses, flats and commercial buildings across Maze Hill, we reseal joints in brickwork, render, cladding and façade panels. The preparation is the same whatever the wall: clean joint faces and the right depth. Typical jobs include leaking joints around cladding and façade panels and weeds or debris growing in open joints, on brickwork movement joints, render & cladding joints and concrete & block.

London’s terraces and conversions often share walls, gutters and downpipes with their neighbours, so one failed joint can cause damp for more than one household. For a flat in Maze Hill, check the lease for who looks after the outside.

Each job carries a 12-month guarantee, large or small.

Eleven members of the Mr Mastic team standing in front of branded white vans
Where
Maze Hill (SE10, SE3, E14)
Region
Greater London
Cover
One year on every job
Quote
Quoted before any work starts
Telephone
0345 464 0079
Updated
26 October 2026

What affects the quote in Maze Hill

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

  • How many areas need sealing
  • How easy the joints are to reach
  • Mould in or behind the old joints
  • Which sealant suits the joint

Leaving a failed joint generally makes the job bigger, not smaller, as water and mould keep getting in. If you’re not sure whether it needs doing, ring 0345 464 0079 or email us for an honest opinion and a quote.

What to tell us for a quote

Photos help, but a description is a good start. Please mention:

  • Whether it has been sealed before
  • If it’s domestic, commercial or a hotel
  • The problem you’ve noticed
  • The rough size of the job

There’s no standard price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To get started, call 0345 464 0079 or send us an email.

Maze Hill: your questions answered

Is parking a problem for a job in Maze Hill?

It can be, so it helps to tell us about permits, visitor bays or off-street space when you book. That way the visit can be planned around it.

Is Maze Hill in your area for external mastic?

Yes. Our work covers London and the South East, and Maze Hill is part of that. Just call 0345 464 0079 or drop us an email with a few details of the job, and we’ll send you a clear quote.

How much does external mastic cost in Maze Hill?

Size, access and the old material all affect the cost. Ask us for a quote.

What is a movement joint?

Walls move with heat, cold and moisture, so long walls have planned gaps to take that movement. The gap is sealed with a flexible sealant over backing rod.

Do you have insurance?

Yes. We’re fully insured.

Can you seal joints between two different materials?

Yes. The old joint is removed, both surfaces cleaned and primed where needed, and a flexible sealant applied. The colour is chosen to suit.

Do you work for letting agents?

Yes, we do. Domestic, commercial and hotel work are all part of what we do, and we’re fully insured.

Can you work on commercial sites?

Yes, regularly. Larger jobs can be planned room by room or area by area to suit the site.

DIY versus a professional finish

Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.

If you are set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.

How it works

On the day, we look over the joints with you first. Surfaces next to the work are protected before work begins. The work usually takes anything from a few hours to several days, depending on the building. For a job in Maze Hill, parking and access are the things to plan: let us know about parking, the floor we’ll be working on and any lift or shared entrance.

  1. We start by walking round the building and agreeing the joints and the access.
  2. Every bit of old sealant and any mortar or debris is cut out.
  3. Joint faces are cleaned back and primed if the sealant needs it.
  4. We fit closed-cell backing rod to control the depth.
  5. We apply the sealant, tool it and check the whole run.

How to prepare

  • Tell us if parking is tricky
  • Keep pets and children clear of the area while we work
  • Tell us about access, such as stairs, a lift or high-level joints

Get a quote

It all starts with a short chat. Describe the problem, the location and the size of the job, and we will talk you through what we’d do. Whenever you’re ready, call 0345 464 0079 or drop us an email.

Ask for a quote

Related advice

For landlords and businesses

Letting agents often deal with us directly. Tell us the address, the job and how access works and we will quote.

Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. Several properties can be quoted together.

Outside joints around Maze Hill

In terraces and conversions, gutters and walls are often shared with the neighbours, so check who is responsible for the outside before booking. Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.

Letting a property close to Maze Hill station? Then outside joints that have cracked can let damp into a rental, so check them between lets. Homes close to Christ Church include some older properties, and the joints between older walls, newer extensions and the roofline need a sealant that can move. As a London address, Maze Hill can be tricky for parking: let us know about parking bays, permits or a driveway.

Maze Hill is about 1 mile north-east of Greenwich, in Greater London. For external mastic in and around Maze Hill, please phone 0345 464 0079 or drop us an email for a quick quote. We are based in Crawley and cover Greater London, Maze Hill included. Across Greater London, we cover 764 places, Maze Hill among them.

We work across the SE10, SE3 and E14 postcode area for external mastic and the streets around it. If you need external mastic at a property on Webb Road, The Avenue and Hardy Road or a nearby road, we can help. Neighbouring places we cover for external mastic include Greenwich (1 mile south-west), Vanbrugh Park Estate (1 mile south-east), Westcombe Park (1 mile east), Blackheath (1 mile south) and Isle of Dogs (1 mile north-west). Within a short drive, we also cover London (4 miles west), City of Westminster (7 miles west), Marylebone (7 miles west), Kensington (9 miles west), St Pancras (6 miles north-west) and Shoreditch (5 miles north-west).

What’s near Maze Hill

Typical jobs here are in homes near Wildwood Montessori School, East Greenwich Pleasaunce and Meridian Primary School. Maze Hill has its own railway station: Maze Hill station. Well-known places in the area include Lewisham Shopping Centre (1.5 miles south-west) and Greenwich District Hospital (within half a mile north-east). For a walk, there’s Tower Hill and Creekside Discovery Centre.

Map of Maze Hill © OpenStreetMap contributors

When something else is needed

It helps to know what we can’t do too:

  • Damp that isn’t coming from the joint
  • Cracked brickwork or render that needs a builder or plasterer
  • Structural movement, which needs a surveyor or engineer

If in doubt, ring 0345 464 0079 or drop us an email and we’ll say what we think.

What we seal

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

Looking after it afterwards

Aftercare is simple, and it makes a real difference:

  • Walk round the building once a year and look at the joints
  • Avoid pressure-washing directly into sealant joints
  • Ask before painting over external sealant
  • Keep movement joints as flexible joints, not mortar

If you have more work done on the wall, such as new render, cladding or an opening, show the contractor the movement joints. They should be kept open and resealed, not filled.

Once a joint cannot move, the wall finds another way, often as cracks near the joint. Catch it early and you reduce the risk.

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