Greater London · England
Window & door mastic in Locksbottom, Greater London
Our applicators work in Locksbottom on mastic around window and door frames, sills and patio doors. Old sealant removed completely, joints prepared properly.
- Rushed sealant from a window installation
- Cracked internal joints between frame and plaster
- Black, perished sealant on frames
Window mastic in Locksbottom
Every window and door frame has a gap around it, and mastic is what closes it. When it cracks, hardens or pulls away, draughts and rain get in. Our applicators cut it out and replace it with a flexible, weatherproof sealant. Common call-outs are for draughts coming in around windows and doors and rain getting in at the frame or under the sill, across aluminium frames, uPVC windows and window sills.
Many London homes are flats, with windows high above the street. In a converted house or block, the lease usually says who is responsible for the windows, so it’s worth checking before booking, and access in Locksbottom is something to talk through when you book.
Every job is covered by a one-year guarantee.
- Place
- Locksbottom (BR6, BR2, BR5)
- Wider area
- Greater London
- Cover
- One year on every job
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
For landlords and businesses
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
Letting agents and landlords in Locksbottom can book us as well as homeowners. Sealant work between tenants keeps a property looking cared for.
Questions from Locksbottom
Can you do window mastic in Locksbottom?
Yes, Locksbottom is within the area we cover. We work across London and the South East. You can ring 0345 464 0079 or drop us an email and let us know what needs doing, and we’ll give you a clear quote.
I let a flat near Orpington station. Can you help?
Yes, landlords and agents are among the people we work for. You can call 0345 464 0079 or drop us an email with the details for a clear quote.
Can you do several jobs on one visit?
Yes, we can. More than one area can be quoted together.
Which products do you use?
The product depends on the job: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. We use products from Arbo and Everbuild.
How long will my window job take?
A handful of frames is a short visit. We confirm the timing with your quote.
Do the sealants smell?
Some sealants have a smell while they cure. Ventilation helps.
Can new sealant go over the old?
No, and we never do. It can look neat for a few weeks, but the new layer lifts away from the old one. Removing the old sealant completely is the only lasting way.
Do you have sealant for grey or black windows?
Yes, in most cases. Mention the frame colour when you ask for a quote and we’ll use the nearest match.
The process
At the end, we look at the finished work together and tell you how long to leave it. The visit itself generally takes a few hours for a few frames, or a day or more for a whole house, depending on the size of the job. In Locksbottom, as in most of London, parking needs a little planning. A visitor permit or a nearby bay makes the visit run more smoothly.
- We check how each frame can be reached safely.
- All the failed sealant is cut away.
- Frame and wall are cleaned and must be dry before sealing, and primed where the sealant calls for it.
- Backing rod fills deep voids and the sealant goes in on top.
- The joint is shaped to shed water and the area tidied.
Preparing for the visit
- Plan for the work area to be out of bounds to pets and children
- Tell us about access, such as stairs, a lift or high-level joints
- For business premises, tell us about site rules or sign-in
Ask for a quote
Need a quote? Please ring 0345 464 0079 or email us and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.
Read more
Leave it or put it right?
Getting a straight, even bead on an outside frame takes practice, especially upstairs. A professional job is cut out properly, backed where needed and finished neatly, in a sealant suited to the wall. Damp from a failed joint spreads quietly in older London brickwork and timber, and once it shows in Locksbottom, the repair is bigger than a sealant job.
Rather than a set price list, we price the job in front of us: the amount of work, the old material and the access. You will know the price before we begin.
Why Locksbottom clients choose us
- Trusted Arbo and Everbuild sealants
- Old sealant always removed completely
- Colour picked to suit the job
- 4.9 on Google from 180+ five-star reviews
DIY sealant or a professional job?
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
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.
Towns and villages near Locksbottom
What else we do in Locksbottom
Windows and doors in Locksbottom
London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. With historic houses such as Down House (about 2.7 miles south) nearby, there’s older building stock in the area around Locksbottom as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
Schools such as Darrick Wood Infant & Nursery School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages. For an older house near a landmark such as St Paul, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Locksbottom is about 2 miles south-west of Orpington, in Greater London. Homes, rented property, offices and hotels in Locksbottom can book us for window mastic, old or new, large or small. Every job comes with our 12-month guarantee. Locksbottom is one of 764 places in Greater London we cover for window mastic. There’s also a page for London, roughly 11 miles from Locksbottom.
Our applicators cover all of BR6, BR2 and BR5 for window mastic. If you need window mastic at a property on Mada Road, Winton Road and Park Avenue or anywhere close by, we can help. If you’re just outside Locksbottom, we cover Crofton (1 mile east), Farnborough (1 mile south-east), Petts Wood (1 mile north-east), Bromley Common (1 mile north-west) and Keston (1 mile south-west). Larger places within reach include London (11 miles north-west), City of Westminster (14 miles north-west), Marylebone (14 miles north-west), Kensington (14 miles north-west), St Pancras (13 miles north-west) and Shoreditch (12 miles north-west).
Local landmarks in Locksbottom
Around Locksbottom, our work takes us to homes and buildings near South Park and Darrick Wood School. Locksbottom’s nearest station is Orpington station, roughly 1.2 miles east. Well-known places in the area include Princess Royal University Hospital (0.5 miles south-west) and Crofton Roman Villa (1.2 miles east). The countryside around Locksbottom includes Summer Hill and Downe Bank Nature Reserve.
Surface by surface
Timber windows & doors
Wood swells when it’s wet and shrinks when it dries, so a flexible sealant is essential. The paint or stain needs to be sound where the sealant meets it.
Window sills
The end joints of a sill tend to fail before the rest. We reseal them so rain cannot run into the wall.
When it isn’t the sealant
In fairness, there are a few things sealant won’t fix:
- A door that needs adjusting, rehanging or new seals
- A failed sealed unit that has misted up
- Damp problems in the wall away from the window
If in doubt, call 0345 464 0079 or email us and we will say what we think before you book.
Surfaces we seal
- Patio & French doors
- Window sills
- uPVC windows
- Composite doors
- Timber windows & doors
- Aluminium frames
What we are called out for in Locksbottom
Sun, frost and rain wear sealant out. Sunlight dries the surface out, until it loses its stretch and starts to crack.
Keep an eye out for these signs:
- Rain getting in at the frame or under the sill
- Gaps between the frame and the inside reveal
- Mastic that has split away from the wall
- Sealant in the wrong colour for the frame
Rented homes near Orpington station change hands often, and sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
Comparing quotes
- What preparation is included
- What the quote includes, VAT included or not
- Whether all the old sealant comes out first
- Which sealant they’ll use, and why