Greater London · England
External & façade joints in Woodcote, Greater London
Specialist external mastic for Woodcote: the right sealant, proper preparation and a neat finish. Call for a quick quote.
- Brick movement joints where the sealant has split
- Rigid filler in a joint that should flex
- Weathered mastic that no longer stretches
The process
Our applicators work methodically: protection first, then preparation, sealing and a tidy-up. For most jobs that takes anything from a few hours to several days, depending on the building. For a job in Woodcote, parking and access are the things to plan: tell us about permits, visitor bays or off-street space, which floor we are working on and whether there’s a lift.
- First we look over the joints with you, agree which to renew and talk through access.
- The old mastic and anything lodged in the joint is removed.
- Both sides are cleaned back to sound material and primed if needed.
- Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
Before we arrive
- Tell us about any previous sealing or DIY attempts
- Move anything stored near the joints
- For indoor joints, keep the area dry beforehand if you can
Ask for a quote
Want a quote for external mastic? Please ring 0345 464 0079 or send us an email and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.
Related advice
About our external mastic in Woodcote
Movement joints let brickwork, render and cladding expand and shrink without cracking. Its sealant has to flex with the building, season after season, so once it splits or hardens, the joint stops working and water gets in. If you’re dealing with water getting into walls through failed joints and failed seals between different materials, we can help, whatever the surface.
Modern London flats rely on sealed movement joints and cladding joints. Period houses have different weak points, such as gutter joints, trims and the line where an extension meets the old wall.
All of our work is guaranteed for twelve months.
- Place
- Woodcote (CR8, CR5, SM6)
- Region
- Greater London
- Cover
- A year, on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Nearby places to Woodcote
What else we do in Woodcote
DIY sealant or a professional job?
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it doesn’t work out, we can still put it right.
Woodcote buildings and the weather
In terraces and conversions, gutters and walls are often shared with the neighbours, so it’s worth agreeing who is responsible before work starts. With historic houses such as Nonsuch Mansion (about 4.3 miles north-west) nearby, there’s older building stock in the area around Woodcote as well as newer homes. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material.
Woodcote is in London, so parking needs planning: let us know about parking bays, permits or a driveway. Schools such as Woodcote High School are buildings too, and its movement joints, gutters and trims need looking after like any other building’s. If you live in an older home near St Swithun's, an extension built onto an older house moves differently, and the joint between them takes the strain.
Woodcote is about 1 mile west of Purley, in Greater London. Homes, rented property, offices and hotels in Woodcote is covered for external mastic, old or new, large or small. The work is guaranteed for a year. Woodcote is one of 764 places in Greater London where we work. Our London page covers work nearby.
All of CR8, CR5 and SM6 is covered for external mastic, from the main roads to the quietest streets. Streets in the area include Elton Road, Birch Lane and Newton Road, and we cover them all. If you are just outside Woodcote, we cover Woodcote Green (1 mile north-west), Peaks Hill (1 mile north-east), Purley (1 mile east), Little Woodcote (1 mile west) and Coulsdon (1 mile south). We also work in nearby towns such as London (12 miles north), City of Westminster (12 miles north), Marylebone (13 miles north), Kensington (12 miles north), St Pancras (13 miles north) and Shoreditch (13 miles north).
Around Woodcote
Around Woodcote, our work takes us to homes and buildings near The Foxley Hatch pub, Laleham Lea School and Woodcote Primary School and the streets around them. The nearest railway station is Reedham (London) station, roughly 0.7 miles east. Other landmarks nearby include Croydon Airport Visitor Centre (1.7 miles north-east) and St George's Walk (3.2 miles north-east). Open spaces near Woodcote include Foxley Wood and Duppas Hill.
What affects the cost of external mastic
Jobs vary more than people expect. The main factors:
- The type of sealant required
- How easy the joints are to reach
- How much there is to do
- Whether old sealant or filler has to be cut out
Some things make a job bigger or smaller: 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:
- If it’s domestic, commercial or a hotel
- The address or postcode of the job
- The problem you’ve noticed
- A few photos by email, if you can
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and add photos by email if you can.
Your questions about external mastic in Woodcote
Is parking an issue for external mastic in Woodcote?
London parking needs a little planning, so let us know about permits, bays or a driveway when you book. That way the visit can be planned around it.
Is Woodcote in your area for external mastic?
Yes. We work across London and the South East, and Woodcote is part of that. You can phone 0345 464 0079 or email us and tell us what needs doing.
Can landlords and businesses book you?
Yes. Domestic, commercial and hotel work are all part of what we do, and we are fully insured.
Can I do it myself?
Sometimes. The key is preparation: remove all the old material and work on a clean, dry joint. If it does not work out, we can redo it.
Do you have insurance?
Yes. We are fully insured for domestic and commercial work.
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.
Is there any odour?
Possibly a little. Any smell clears as the sealant cures.
When will the joints need doing again?
It depends on the exposure, the movement and the product. Treat it as a maintenance item and look at it yearly and renew it when it starts to fail.
What happens if it’s left?
Running new sealant over the old bead rarely lasts. New sealant doesn’t bond well to old, weathered sealant, so we always take the old sealant out. In a flat in Woodcote, failed sealant seldom stays inside your own four walls: water can reach the neighbours below, and gaps in fire-rated joints affect the whole building.
What you pay reflects the work, not a rough estimate. That’s why we ask a few questions first and agree the price before starting.
What you get with us
- We agree the colour with you first
- 4.9 on Google from 180+ five-star reviews
- Neat joints and a tidy finish
- Colour picked to suit the job
Take a look at our cost guide or our reviews.
When it isn’t the sealant
In fairness, some problems need a different trade:
- Render that’s blown, hollow or coming away
- Damp that isn’t coming from the joint
- Cracked brickwork or render that needs a builder or plasterer
If you’re not sure, just ring 0345 464 0079 or send us an email and we will give you a straight answer before booking.
Surfaces we seal
- Concrete & block
- Façade panels
- Copings & trims
- Brickwork movement joints
- Render & cladding joints
- Joints between brick and frames
Landlord and commercial work in Woodcote
We work for landlords and agents as well as homeowners. Resealing between tenancies keeps a property looking cared for before the next move-in.
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance that we can handle for you.
Surface by surface
Cladding and façade panels
If the façade has a specified sealant, that is what we use. Send us any details you have about the façade.
Concrete and blockwork
Blockwork and concrete shrink over time and move with the seasons. Their movement joints are sealed over backing rod with a flexible sealant.