Greater London · England
Window & door mastic in Eastcote, Greater London
Mastic around window and door frames, sills and patio doors for Eastcote, backed by a one-year guarantee. Call for a quick quote.
- Gaps between the frame and the inside reveal
- Black, perished sealant on frames
- Gaps left after new windows were fitted
Window mastic for homes and businesses in Eastcote
If you can feel air around a shut window, the gap is often at the frame. A new joint stops the air getting through. If the draught is through the window seals instead, we’ll tell you. We’re often asked to deal with old mastic that has gone black or come away and draughty joints inside around the window, on window sills, uPVC windows and composite doors.
London has a lot of flats and conversions, where windows are often on upper floors. In a converted house or block, the lease normally says who is responsible for the windows, so it’s worth checking before booking, and access in Eastcote is something to talk through when you book.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we’ll sort it.
- Place
- Eastcote (HA5, HA4, HA2)
- Wider area
- Greater London
- Cover
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
What sealant work can’t fix
We won’t take on work that will not last, so these are the limits:
- Misting between the panes of a double-glazed unit (that needs a new unit)
- Broken hinges, locks or handles
- A door that needs adjusting, rehanging or new seals
If you’re not sure, just call 0345 464 0079 or email us and we’ll give you a straight answer before you book.
What we seal
- Timber windows & doors
- Window sills
- Composite doors
- Aluminium frames
- uPVC windows
- Patio & French doors
Eastcote questions
Is parking a problem for a job in Eastcote?
It can be, so it helps to tell us about permits, visitor bays or off-street space when you book. That way the visit can be planned around it.
I let a flat near Headstone Lane station. Can you help?
Yes, we work for landlords and agents. You can call 0345 464 0079 or drop us an email with the address and a few details, and we’ll give you a fixed price before we start.
Do you take out the old sealant first?
Yes. Sealing over the old bead is the commonest cause of early failure, and it’s something we never do.
Can you match the sealant to my frames?
Yes. Anthracite grey, black, brown and white cover most frames, with clear as an option.
What do you need from me for a quote?
A short description and the location, with pictures by email if possible. If we need more, we’ll ask.
Do you work for hotels and businesses?
Yes. We’ve worked for hotels, offices and other businesses and we’re fully insured.
What does window mastic cost?
There’s no set price, as it depends on the job: its size, the old material, access and the product needed. You’ll get a clear quote before any work starts.
How long will my window job take?
A handful of frames is a short visit, while a whole house takes longer. We confirm the timing with your quote.
What affects the quote in Eastcote
Your quote is based on your job. We look at:
- How much there is to do
- Which sealant suits the joint
- The number of rooms or windows
- Whether old sealant or filler has to be cut out
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you are unsure, ring 0345 464 0079 or send us an email for an honest opinion and a quote.
What we need to know
To help us quote quickly, let us know:
- Access, such as stairs, a lift or height
- The problem you’ve noticed
- The type of property
- Whether it has been sealed before
Getting a quote is simple: let us know the job and the location, and roughly how big it is. Photos by email help us understand the job.
Nearby places to Eastcote
What else we do in Eastcote
Common problems we fix in Eastcote
Plenty of failed mastic was poorly applied in the first place. Sealant run over dust, wet brick or loose mortar never bonded as it should, and it lets go sooner than it should.
People generally contact us when they notice one of these:
- Gaps where the sill meets the wall
- Black, perished sealant on frames
- A bead that doesn’t match the frame
- Gaps between the frame and the inside reveal
Rented homes near Headstone Lane station change hands often, and cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Questions to ask before you book
- Which sealant they’ll use, and why
- What guarantee comes with the work
- When the joint can take water or movement
- What insurance they hold
What happens if it’s left?
A cracked joint around a frame lets rain into the wall. Left long enough, it can stain inside walls, spoil plaster and rot wooden frames. Resealing now is a small job by comparison. 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 Eastcote, the repair is bigger than the sealant job would have been.
There are no prices on our website, because each job is priced on what it involves. Call for a quick quote.
Why us?
- White, clear, grey or another colour, product permitting
- 4.9 on Google from 180+ five-star reviews
- We’re fully insured
- Arbo and Everbuild products
See our cost guide or our reviews.
For landlords and businesses
Whether it’s one flat or a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
Window mastic in Eastcote: local notes
The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. In London conversions and blocks, the lease decides who is responsible for the frames, so check that before you book.
Eastcote is in London, so parking needs planning: let us know about parking bays, permits or a driveway. Schools such as Cannon Lane Primary School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages.
Eastcote is about 1 mile north-east of Ruislip, in Greater London. For window mastic in and around Eastcote, it’s easy to get a quote: please phone 0345 464 0079 or email us. We cover Greater London from our Crawley base, Eastcote included. Our Greater London coverage runs to 764 places, and Eastcote is one of them. We also work in London, around 14 miles away.
Work in HA5, HA4 and HA2 works the same way as everywhere else we cover. If you need window mastic at a property on Hill Road, Bridle Road and Cannon Lane or anywhere close by, our applicators can take on the job. Neighbouring places we cover for window mastic include Pinner (1 mile north), Roxbourne (1 mile south-east), Pinner Green (1 mile north), Rayners Lane (1 mile south-east) and North Harrow (1 mile east). Within a short drive, we also cover London (14 miles south-east), City of Westminster (11 miles south-east), Marylebone (11 miles south-east), Kensington (10 miles south-east), St Pancras (12 miles east) and Shoreditch (14 miles east).
Local landmarks in Eastcote
In Eastcote, that means homes and buildings near Pinner High School, The Whittington pub and Heathfield School, among other places. For rail, the closest station is Headstone Lane station, roughly 1.9 miles north-east of the centre. Nearby you’ll also find Northwood and Pinner Cottage Hospital (1.7 miles north-west) and St. George's Shopping Centre (2.2 miles east). For a walk, there’s Horse Shoe Bay and Islip Manor Meadows.
What happens on the day
All our tools and materials come with us in the van, so you do not need to buy or prepare anything. After a quick look at the joints together, we protect the area and start. Most jobs take anything from an hour or two to a full day, depending on how many frames there are. In Eastcote, as in most of London, parking needs a little planning. A visitor permit or a nearby bay makes the visit run more smoothly.
- First, we go round the frames with you and agree the list.
- We remove the old mastic and clean the frame edge and wall.
- Deep gaps get closed-cell backing rod to set the depth.
- The new sealant goes on in white, brown, anthracite grey, black or clear to suit.
- Every joint is tooled smooth and checked before we leave.
Preparing for the visit
- Try not to wet indoor joints just before the visit
- Plan for the work area to be out of bounds to pets and children
- Mention any parking rules near the property
Ask for a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and add pictures by email if you can.
Advice
Different surfaces, different methods
Window sills
Sills catch the water running down the glass, so the joints at each end and underneath matter. They’re cut out and resealed with exterior sealant.
uPVC windows
Plastic frames move a lot between a hot afternoon and a cold night, so we use a flexible, low-modulus sealant. We match white, brown, anthracite grey and black frames.