Greater London · England
Window & door mastic in Plaistow, Greater London
Window and door frames in Plaistow need attention? We remove the old material, prepare the joints and seal them properly, with a 12-month guarantee.
- Gaps where the sill meets the wall
- Water coming in at the bottom corners of a door
- Mastic that is falling out in pieces
Landlord and commercial work in Plaistow
For anyone letting property in or around Plaistow, jobs at different addresses can go on one quote. Just tell us the addresses and what each one needs, and pictures by email help.
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance.
Window mastic in Plaistow, done properly
There are two joints on most windows. Outside, the mastic keeps rain out; inside, the joint between frame and plaster stops draughts and tidies the reveal. We seal one or both, depending on what’s needed. Typical jobs include draughts coming in around windows and doors and draughty joints inside around the window, on timber windows & doors, window sills and aluminium frames.
From mansion-block windows to modern glazing in new flats, London has every kind of frame. The mastic around them dries out and cracks with age, letting in draughts and water.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we will sort it.
- Where
- Plaistow (BR1, BR2, BR3)
- Wider area
- Greater London
- Guarantee
- One year on every job
- Price
- A clear price before work begins
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
How the job changes by surface
Timber windows & doors
Wood swells when it’s wet and shrinks when it dries, so a flexible sealant is essential. We seal onto sound, dry paintwork or timber.
Patio & French doors
Not every patio door leak is a mastic problem: blocked drain slots, worn brush seals and threshold details can let water in too. We check before we reseal.
Towns and villages near Plaistow
Other services in Plaistow
Do you need window mastic in Plaistow?
Older frames were often sealed with products that set hard. Once it’s rigid, every bit of frame movement pulls at it, and a gap opens along one edge.
Any of these means the joints need attention:
- Hard, cracked sealant around windows
- Black, perished sealant on frames
- Leaking joints at the ends of sills
- A bead that does not match the frame
Plaistow is in London, so parking needs planning: let us know about parking bays, permits or a driveway.
Comparing quotes
- Whether all the old sealant comes out first
- What happens if the job turns out different
- How the colour is chosen
- Who turns up on the day
Plaistow homes and the weather
In London conversions and blocks, the lease decides who is responsible for the frames, so it’s worth checking before booking. Historic houses like Bromley Palace (about 1.2 miles south-east) are a reminder that the area around Plaistow has older buildings as well as new. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
For landlords with property near Sundridge Park station, renewing tired window mastic between tenants heads off draught and damp complaints. If you look after a building such as Burnt Ash Primary School, the mastic around its windows and doors needs looking after like any other building’s.
Plaistow is about 1 mile north of Bromley, in Greater London. We provide window mastic to homeowners, landlords and businesses in Plaistow, as part of our work across Greater London. Our Greater London coverage runs to 764 places, and Plaistow is one of them. You can also see our page for London, about 7 miles away.
All of BR1, BR2 and BR3 is within our area for window mastic, from the main roads to the quietest streets. We cover properties on Saxon Road, Arcus Road and Croft Road and the roads around them. We also cover Downham (1 mile north), Sundridge (1 mile east), Grove Park (1 mile north-east), Bromley (1 mile south) and Chinbrook (1 mile north-east). Further out, we also cover London (7 miles north-west), City of Westminster (10 miles north-west), Marylebone (10 miles north-west), Kensington (11 miles north-west), St Pancras (9 miles north-west) and Shoreditch (8 miles north-west).
Near you in Plaistow
In Plaistow, that means homes and buildings near Holy Trinity College Bromley, The Railway Tavern and Haberdashers' Aske's Knights Academy and the streets around them. The closest station to Plaistow is Sundridge Park station, about 0.6 miles south-east. Nearby you will also find Greenwich Castle (4.1 miles north) and Prefab Museum (1.3 miles north-west). Not far away are Downham Woodland Walk and Summer Hill.
Why deal with it now?
Draughts and leaks don’t always mean new windows. Where the frames are sound, new mastic normally deals with draughts and leaks at the edges. Problems with the glass or gaskets are for a window company, and we’ll say so. In a flat in Plaistow, failed sealant seldom stays inside your own four walls: water from a shower or window joint can reach the flat below, and gaps in fire-stopping matter to everyone in the building.
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you are not sure whether it needs doing, ring 0345 464 0079 or drop us an email for an honest opinion and a quote.
Why Plaistow customers choose us
- A 12-month guarantee on all work
- Homes, businesses and hotels
- We leave the area clean and tidy
- We agree the colour with you first
How it works
Every visit runs the same way: we look at the joints together, protect the area around them, do the work and clear up. It usually takes a morning for a couple of windows and a door. For a job in Plaistow, 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.
- First, we confirm safe access to each frame.
- Old, cracked mastic is removed completely, along with any loose debris.
- The surfaces are cleaned and left dry, and primed where the sealant calls for it.
- Backing rod fills deep voids and the sealant goes in on top.
- We tool the joint so water runs off, then clear up.
Preparing for the visit
- Mention if the joints have been sealed before
- Clear the area around the work
- Keep pets and children clear of the area while we work
Getting a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we will explain how we’d tackle it. Whenever you’re ready, call 0345 464 0079 or email us.
Read more
Aftercare tips
Simple care keeps the joints in good condition. Our advice:
- Air rooms to keep condensation down around windows
- Walk round the house once a year and look at the joints
- Keep drainage slots and sill grooves clear
- Wash the frames with mild soapy water
Clean the frames with mild soapy water, and avoid solvent cleaners on the sealant.
Draughts get worse, not better. As the old mastic shrinks further, more air gets through, and heat escapes around the frame. Resealing closes it.
Questions from Plaistow
Is Plaistow in your area for window mastic?
Yes. We work across London and the South East, and Plaistow is part of that. You can call 0345 464 0079 or drop us an email and tell us what needs doing, and we’ll give you a clear quote.
Do you work for landlords with property near Sundridge Park station?
Yes. We work for letting agents and landlords as well as homeowners. You can ring 0345 464 0079 or drop us an email with the details for a clear quote.
Do the sealants smell?
There can be a smell while the sealant cures, but it fades. Opening a window helps.
What sealant do you use?
It depends on the joint: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. We use products from Arbo and Everbuild.
Will new mastic stop draughts?
It will if the frame joint is the problem. We check where the draught is before we start.
Will you leave a mess?
No. We protect the surfaces around the joints, and we tidy up before we go.
Do you remove the old sealant?
Yes. All of the old material is cut out and the joint cleaned before applying anything new.
Are you ARBOMaster approved?
Yes. Mr Mastic is an ARBOMaster approved applicator and we are fully insured too.
What sealant work cannot fix
Honest advice matters more to us than a booking, so here’s what sealant can’t fix:
- Worn gaskets, brush seals or a door that has dropped
- Broken hinges, locks or handles
- A frame that has rotted at the joint
If in doubt, call 0345 464 0079 or send us an email and we will say what we think.
Surfaces we seal
- Aluminium frames
- Window sills
- uPVC windows
- Timber windows & doors
- Composite doors
- Patio & French doors