Greater London · England
Window & door mastic in Yiewsley, Greater London
Mastic around window and door frames, sills and patio doors for Yiewsley, backed by a one-year guarantee. Call for a quick quote.
- Draughts coming in around windows and doors
- Cracked sealant at the sill ends
- Rushed sealant from a window installation
Your questions about window mastic in Yiewsley
Is Yiewsley in your area for window mastic?
Yes. We work across London and the South East, and Yiewsley is part of that. Just ring 0345 464 0079 or email us with a few details of the job, and we’ll give you a clear price.
I let a flat near Southall station. Can you help?
Yes, we work for landlords and letting agents. Just call 0345 464 0079 or email us and tell us about the property, and we will send you a clear quote.
Will it make a mess?
We keep the work tidy. Nearby surfaces are protected, and we clear up when we’re done.
Do you do commercial work?
Yes. Hotels, offices and other businesses use us, and we’re fully insured.
Which products do you use?
Quality sealants from brands including Arbo and Everbuild, chosen to suit the joint. We explain the product when we quote.
Do you guarantee window mastic?
Yes. Every job comes with our one-year guarantee, and we are ARBOMaster approved applicators.
Is there any odour?
Some sealants have a smell while they cure. Ventilation helps.
Do you hold any approvals?
Yes. We’re ARBOMaster approved, the scheme for applicators of Arbo sealants.
Window mastic in Yiewsley
The new joint doesn’t have to be white. White, brown, anthracite grey, black and clear sealants are all available, so the bead blends with the window rather than framing it. We are often asked to deal with untidy mastic left by window fitters and black, perished sealant on frames, on window sills, composite doors and timber windows & doors.
Much of London’s older housing was built with timber sash windows, some still in place and some long since replaced. Whatever is in the opening now, the joint between frame and wall is what keeps the weather out.
A one-year guarantee comes as standard.
- Where
- Yiewsley (UB5, UB4, UB1)
- Wider area
- Greater London
- Guarantee
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Can I do it myself?
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and doesn’t move well, and getting the depth right matters as much as the look.
Aftercare tips
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Air rooms to keep condensation down around windows
- Use gentle cleaners on frames and sealant
- Keep drainage slots and sill grooves clear
- Repaint timber before it’s bare
Wipe the frames with soapy water when you clean the windows, and keep solvents and harsh chemicals off the joint.
Wet, windy weather is when failed mastic shows itself, but sealant goes on best when frames and walls are dry. Sorting cracked mastic early means the joint is sound before the bad weather.
How the visit works
Before we leave, we go over the finished joints with you and explain the cure time. The visit itself usually takes most of a day for a typical house, less for a few frames, depending on the size of the job. In Yiewsley, flats, stairs and shared entrances are part of the routine. If the building has a concierge, managing agent or access rules, tell us when you book.
- We check each frame and agree which ones need doing.
- Next the failed sealant is cut away and the joint cleaned.
- Deep gaps are filled with backing rod to set the depth.
- New exterior sealant goes on in a matching colour and is tooled smooth.
- Finally we tidy up and check each joint.
Preparing for the visit
- Mention any sign-in or site rules at work premises
- Tell us about any previous sealing or DIY attempts
- Clear the area around the work
Getting a quote
Getting a quote is simple: let us know the job and the location. A few pictures by email make the job easier to understand.
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Places near Yiewsley
What else we do in Yiewsley
What we’re called out for in Yiewsley
Sills take more water than any other part of a window, so the sill ends and the joint below the frame are common leak points. Failed sealant there lets rain into the wall or behind the frame.
Any of these means the joints need attention:
- Sealant in the wrong colour for the frame
- Old mastic that has gone black or come away
- Mastic that has split away from the wall
- Draughts coming in around windows and doors
In the older streets around St Joseph the Worker & Dovetail Centre, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Comparing quotes
- Is VAT in the price?
- Which colour the sealant will be
- How much experience the applicator has
- What the cure time is
Windows and doors in Yiewsley
In London conversions and blocks, the lease decides who is responsible for the frames, so it’s worth checking before booking. With historic houses such as Northolt Manor (about 1.4 miles north-east) nearby, there’s older building stock in the area around Yiewsley as well as newer homes. 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 Southall station, renewing tired window mastic between tenants heads off draught and damp complaints. Managing a site like Brookside Primary School? Then the mastic around its windows and doors needs looking after like any other building’s.
Yiewsley is about 2 miles north-east of Hayes, in Greater London. Whether you’re in the middle of Yiewsley or further out, window mastic is available for homes and businesses alike, from flats and houses to offices and hotels. Across Greater London, we cover 764 places, and Yiewsley is one of them. There’s also a page for London, roughly 13 miles from Yiewsley.
Jobs for window mastic in UB5, UB4 and UB1 works the same way as everywhere else we cover. If you need window mastic at a property on Owen Road, Friar Road and Maple Road or anywhere close by, we can help. Neighbouring places we cover for window mastic include Yeading (1 mile north), Dormers Wells (2 miles south-east), Northolt (2 miles north-east), Southall (2 miles south) and South Ruislip (2 miles north). Further out, we also cover London (13 miles east), City of Westminster (10 miles east), Marylebone (11 miles east), Kensington (8 miles east), St Pancras (12 miles east) and Shoreditch (13 miles east).
Near you in Yiewsley
Locally, jobs take us to homes and businesses close to White Hart Public House, Northala Fields and Barnhill Community High School, among other places. Yiewsley’s nearest station is Southall station, about 1.8 miles south of the centre. Well-known places in the area include Hayes Cottage Hospital (1.5 miles south-west) and The Chimes (3.8 miles west). Not far away are Northala Fields and Yeading Brook Meadows.
When it is not the sealant
We will always be straight with you, so here’s what new sealant will not do:
- Faulty window hardware
- A failed sealed unit that has misted up
- A door that needs adjusting, rehanging or new seals
If you’re not sure, just phone 0345 464 0079 or email us and we will give you a straight answer before booking.
Joints and surfaces we work on
- Timber windows & doors
- Aluminium frames
- Patio & French doors
- uPVC windows
- Window sills
- Composite doors
For landlords and businesses
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. We can quote for more than one property at once.
We also work for property managers and facilities teams in Yiewsley and across Greater London. We can quote a run of properties together, and we’re fully insured for the work.
How we quote for window mastic
Your quote is based on your job. We take into account:
- The size of the job
- How many rooms, windows or areas are involved
- Whether old sealant or filler has to be cut out
- The product the joint needs
A few things move the cost up or down: 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
Before you ask for a quote, have a think about:
- If it’s domestic, commercial or a hotel
- Any access issues, like height or stairs
- What’s wrong with the joints now
- Any previous sealing or DIY work
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and add pictures by email if you can.