Greater London · England
External & façade joints in Shooter's Hill, Greater London
Sealing brickwork movement joints, render, cladding and façade joints for homes and businesses in Shooter's Hill and across Greater London. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Old sealant gone brittle and cracked
- Movement joints filled with mortar instead of sealant
- Damp patches traced to an open external joint
Different surfaces, different methods
Concrete and blockwork
The face of concrete or block is often dusty, so preparation is key. A primer goes on where the product requires one before the bead.
Brickwork movement joints
Brick walls have vertical movement joints to absorb expansion. We reseal them with a low-modulus sealant over backing rod.
How we handle external mastic in Shooter's Hill
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 strip the joint back and start again. We work on joints between brick and frames, brickwork movement joints and façade panels, and people most often call us about gaps where render, brick and frames meet and leaking joints around cladding and façade panels.
Newer London blocks are built with movement joints in brick and render, and with cladding joints sealed with mastic. Older terraces have their own weak points: gutter joints, roofline trims and the joint where an extension meets the original wall, and both kinds of building are found across London.
There’s a 12-month guarantee on every job.
- Where
- Shooter's Hill (SE18, SE9, DA16)
- Wider area
- Greater London
- Cover
- A year, on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
What we are called out for in Shooter's Hill
Joints sealed without backing rod, or far too deep, rarely last. Sealant bonded to three sides has nowhere to go and rips as the joint opens.
People generally contact us when they notice one of these:
- Sealant that has lost its bond to the brick or render
- Moss and dirt in joints with no sealant left
- Failed seals between different materials
- Brick movement joints where the sealant has split
For site and facilities teams at buildings such as Shooters Hill Sixth Form College, its movement joints, gutters and trims need looking after like any other building’s.
Before booking anyone
- How the colour is chosen
- How the joint is cleaned and prepared
- Is the old sealant removed completely?
- Are they insured?
DIY sealant or a professional job?
Sealing over old silicone is the commonest DIY error. New silicone won’t bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
Landlords, agents and businesses in Shooter's Hill
Landlords and agents in Shooter's Hill can book us as well as homeowners. Resealing between tenancies keeps a property looking cared for before the next move-in.
Hotels need rooms back in use, so the work can be planned room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
Shooter's Hill questions
Is parking a problem for a job in Shooter's Hill?
In much of London, parking needs planning: a visitor permit or a bay close to the door helps a lot.
I let a flat near Falconwood station. Can you help?
Yes. We work for letting agents and landlords as well as householders. Just ring 0345 464 0079 or send us an email with the address and what needs doing, and we’ll send you a clear quote.
Do you do commercial work?
Yes. We have worked for hotels, offices and other businesses, and we are fully insured.
Do you hold any approvals?
Yes. We hold ARBOMaster approved applicator status, and we’re fully insured.
How long does external mastic take?
Most jobs take a few hours for a handful of joints, longer for a whole elevation, including preparation and clearing up. Your quote will say how long we expect yours to take.
Can a movement joint be filled with mortar?
No. Cement or mortar can’t stretch and the joint fails. If it has already been filled, we can usually cut it out and reseal it.
Will the new joint stand out?
Exterior sealants are made in a range of colours, from greys and browns to whites and stone shades. We pick the one that suits your wall best so it doesn’t stand out.
How much does external mastic cost in Shooter's Hill?
The cost depends on the size of the job, access and how much old sealant has to come out. Ask us for a quote.
How the visit works
On the day, there’s very little for you to do. Point us to the joints and we will get on with it. The job generally takes a few hours for a handful of joints, longer for a whole elevation. For a job in Shooter's Hill, parking and access are the things to plan: let us know about parking, the floor we will be working on and any lift or shared entrance.
- We start by checking each joint, agreeing the ones to redo and how we will reach them.
- The old mastic and anything lodged in the joint is removed.
- We clean both faces of the joint and prime them where the product calls for it.
- Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
- The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.
Before we arrive
- Mention any parking rules near the property
- Let us know about earlier repairs to the joints
- Move anything stored near the joints
How to get a quote
To get a quote, phone 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. We will give you a clear quote before any work starts.
Advice
How we quote for external mastic
Some jobs are bigger than they look, and some smaller. The main factors:
- The type of sealant required
- Any mould that needs treating
- The size of the job
- Working hours on commercial sites
Combining jobs into one visit normally makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. You will get one clear quote for the whole job.
What to tell us for a quote
Photos by email are helpful but not essential. Try to tell us:
- The type of property
- Access, such as stairs, a lift or height
- If someone has resealed it before
- How many joints, rooms or windows are involved
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is.
What external mastic looks like in Shooter's Hill
Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. London terraces and converted houses often share gutters, downpipes and walls, so check who is responsible for the outside before booking.
Letting a property close to Falconwood station? Then outside joints that have cracked can let damp into a rental, so check them between lets. As a London address, Shooter's Hill can be tricky for parking: let us know about parking bays, permits or a driveway.
Shooter's Hill is about 1 mile south-west of Plumstead, in Greater London. Shooter's Hill gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Our Greater London coverage runs to 764 places, and Shooter's Hill is one of them. There’s also a page for London, roughly 7 miles from Shooter's Hill.
Jobs for external mastic in SE18, SE9 and DA16 works the same way as everywhere else we cover. Local streets include Brent Road, Dover Road and Kinlet Road, and we cover them all. We also cover the places around Shooter's Hill: Kidbrooke (1 mile west), Well Hall (1 mile south-west), East Wickham (1 mile east), Avery Hill (1 mile south) and Plumstead (1 mile north-east). We also work in nearby towns such as London (7 miles west), City of Westminster (10 miles west), Marylebone (10 miles west), Kensington (12 miles west), St Pancras (9 miles north-west) and Shoreditch (7 miles north-west).
What’s near Shooter's Hill
Typical jobs here are in homes near The Bull Public House, Eaglesfield Park and Deansfield Primary School and the streets around them. Shooter's Hill’s nearest station is Falconwood station, about 0.9 miles south-east. Nearby you will also find Gallions Reach Shopping Park (2.9 miles north) and Greenwich Castle (3 miles west). Open spaces near Shooter's Hill include Summer Hill and Birdbrook Road Nature Reserve.
Towns and villages near Shooter's Hill
Other services in Shooter's Hill
Leave it or put it right?
An open joint keeps letting water into the wall with every downpour. Wet masonry is more easily damaged by frost around the joint, so the problem grows beyond the joint itself. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and by the time it shows on a wall or ceiling in Shooter's Hill, the repair is bigger than the sealant job would have been.
Homes and businesses are quoted the same way: the amount of work, the access and the products needed. Call for a quick quote and we will explain what it covers.
Why Shooter's Hill clients choose us
- Quality sealants from Arbo and Everbuild
- A 12-month guarantee on all work
- Any old sealant cut out fully, not covered over
- Homes, businesses and hotels
See our cost guide and customer reviews.