Greater London · England
External & façade joints in Woodlands, Greater London
Movement joints in Woodlands need attention? We remove the old material, prepare the joints and seal them properly, and the work is guaranteed for a year.
- Joints where the bead has come unstuck
- Joints pointed up with cement by mistake
- Brick movement joints where the sealant has split
External mastic in Woodlands: local notes
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. 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 Mary the Virgin, an extension built onto an older house moves differently, and the joint between them takes the strain. If you look after a building such as Spring Grove Primary School, larger buildings have long runs of movement joint that eventually need resealing.
Woodlands is about 2 miles north of Twickenham, in Greater London. Whether you are in the middle of Woodlands or further out, external mastic is available for homes and businesses alike. Woodlands is one of 764 towns and villages in Greater London we cover. There’s also a page for London, about 11 miles away.
All of TW7 and TW3 is within our area for external mastic. External mastic is available to properties on Star Road, Pears Road and Unwin Road. We also cover the places around Woodlands: Hounslow (1 mile south-west), Isleworth (1 mile east), Spring Grove (1 mile north), Ivybridge (1 mile south) and Lampton (1 mile north-west). Further out, we also cover London (11 miles east), City of Westminster (9 miles east), Marylebone (9 miles east), Kensington (6 miles east), St Pancras (10 miles east) and Shoreditch (12 miles east).
Around Woodlands
Around Woodlands, our work takes us to homes and buildings near Royal Military School of Music, Gumley House RC Convent School and The George Inn and the streets around them. Woodlands has its own railway station: Isleworth station. A little further out are Museum of Army Music (1.1 miles south) and Treaty Centre (1 mile west). Green spaces nearby include Garden Lake and Long Wood.
External mastic in Woodlands
External mastic is a job where short cuts show quickly. Overfilled joints, missing backing rod and sealant laid over old sealant all tend to fail early. We take the old material out and do it properly. If you have brick movement joints where the sealant has split and water getting into walls through failed joints, we can put it right.
Modern London flats rely on sealed movement joints and cladding joints. Older terraces have their own weak points: gutter joints, roofline trims and the joint where an extension meets the original wall.
A one-year guarantee comes with the work, just as it does everywhere we cover.
- Location
- Woodlands (TW7, TW3)
- Region
- Greater London
- Cover
- A year, on every job
- Quote
- A clear price before work begins
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
DIY sealant or a professional job?
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’ve already had a go yourself, that’s fine. We remove it and do the joint properly.
Common questions in Woodlands
Can parking be tricky for a visit in Woodlands?
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.
Is Woodlands in your area for external mastic?
Yes, Woodlands is within the area we cover. We work across London and the South East. Just phone 0345 464 0079 or email us with a few details of the job.
Do I have to be there?
If the work is inside, we need someone to let us in. After that, you can carry on with your day.
Can you seal joints between two different materials?
Yes. Different materials move at different rates, so the joint between them must be flexible. The sealant is matched to both sides.
Is it worth trying it myself?
You can, for simple jobs. Preparation is everything: all the old sealant out, and a clean, dry joint. If it does not work out, we can redo it.
Is it OK to seal over old sealant?
No, it will not last. It may look fine at first, but the new bead soon lifts. Removing the old sealant completely is the only lasting way.
Is it messy?
We keep the work tidy. We protect what’s around the joints, and we clear up when we are done.
Do you work for landlords and businesses?
Yes. Domestic, commercial and hotel work are all part of what we do.
Work for landlords, hotels and businesses
Housing providers, facilities teams and property managers book us too in Woodlands and across Greater London. We can quote a run of properties together, and we are fully insured for the work.
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
What we do, step by step
The work is kept neat and contained to the area we’re working on, so you can get on with your day. The job normally takes a few hours for a handful of joints, longer for a whole elevation. For a job in Woodlands, 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.
- We look at every joint and agree a colour to suit the wall.
- Failed sealant is removed back to clean, sound faces.
- Backing rod goes in so the sealant can stretch between the two faces.
- Primer is applied wherever the sealant needs it.
- We gun in low-modulus sealant and tool it neatly.
Before we arrive
- Tell us about access, such as stairs, a lift or high-level joints
- Let us know about parking restrictions
- Mention any sign-in or site rules at work premises
Get a quote
If you’re in Woodlands and need external mastic, ring 0345 464 0079 or email us. Tell us what the problem is and where, and we’ll agree the price before any work begins.
Related advice
Also near Woodlands
What else we do in Woodlands
Looking after it afterwards
So the new joints stay in good condition:
- Keep high-pressure jets off the joints
- Show decorators and builders where the movement joints are
- Never let anyone fill a movement joint with mortar
- Keep water from gutters off the wall
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.
If you can see gaps, plants or bare sections in a joint, have it checked. Earlier resealing means a smaller job and a better result.
What affects the quote in Woodlands
There’s no set price list, because no two jobs are the same. What we look at:
- The amount of work
- Any working-time requirements on site
- The product the joint needs
- Any mould that needs treating
The cost depends on the size of the job, how much old material has to come out and access to the work. We give a clear quote before any work starts.
What to tell us for a quote
When you contact us, it’s useful to know:
- Any previous sealing or DIY work
- Whether it’s a home or a business
- Pictures of the joints, sent by email
- Where the property is
For a quote, ring 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. We’ll give you a clear quote before any work starts.
When to call us in Woodlands
If plants are growing out of a joint, the sealant has normally failed or was never there. Dirt and roots then trap moisture in the joint and make things worse.
Look out for these signs:
- Joints where the bead has come unstuck
- Weeds or debris growing in open joints
- Gaps where render, brick and frames meet
- Rigid filler in a joint that should flex
For landlords with property near Isleworth station, failed wall and movement joints let damp in, so they’re worth checking between tenancies.
What to look for in a quote
- Is the old sealant removed completely?
- What product goes in the joint
- How the surfaces are prepared before sealing
- Which colour the sealant will be
Honest limits
We’d rather tell you now than do work that won’t last, so these are the limits:
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Cutting new joints into brickwork, which is building work rather than sealant work
- Subsidence or other structural problems
If in doubt, call 0345 464 0079 or email us and we’ll say what we think before you book.
Surfaces we seal
- Joints between brick and frames
- Copings & trims
- Concrete & block
- Render & cladding joints
- Brickwork movement joints
- Façade panels