Greater London · England
Old Oak Common Window Mastic
We cover Old Oak Common for mastic around window and door frames, sills and patio doors. Old material cut out, joints cleaned and sealed neatly and a 12-month guarantee.
- Mastic that’s falling out in pieces
- Water coming in at the bottom corners of a door
- Untidy mastic left by window fitters
Questions from Old Oak Common
Is Old Oak Common in your area for window mastic?
Yes. Our work covers London and the South East, and Old Oak Common is part of that. You can phone 0345 464 0079 or drop us an email and let us know what needs doing, and we will give you a clear quote.
Is parking a problem for a job in Old Oak Common?
London parking needs a little planning, so let us know about permits, bays or a driveway when you book. The visit is then planned around what’s available.
Can landlords and businesses book you?
Yes. We work in homes, commercial premises and hotels, and we are fully insured.
I rent my home. Can I book you?
Of course. Check with your landlord; we can send the quote to them too.
Do you seal inside as well as outside?
Yes. Plenty of draughts come through the inside joint as well as the outside, so sealing both is often worthwhile.
Do you take out the old sealant first?
Yes, every time. New silicone doesn’t stick to old silicone, so any old material comes out before anything new goes in.
Can new sealant go over the old?
No, and we never do. It may look fine at first, but the new bead soon lifts. The old sealant has to come out completely.
How do I get a quote for window mastic in Old Oak Common?
Size, access and the old material all affect the cost. Ask us for a quote and we will talk you through it.
Window mastic in Old Oak Common, done properly
Some gaps around frames are far deeper than they look. Packing it solid with sealant gives a joint that can’t flex, so deep gaps get backing rod first. That way the new bead bonds to the frame and the wall only. Typical jobs include draughts coming in around windows and doors and a bead that doesn’t match the frame, across window sills, patio & French doors and timber windows & doors.
London homes have every kind of window, from timber sashes in period terraces to aluminium and uPVC in newer blocks. Over the years, the sealant around them shrinks, cracks and pulls away, which is when draughts and damp patches appear in homes in Old Oak Common.
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.
- Where
- Old Oak Common (NW10, W3, NW26)
- Region
- Greater London
- Guarantee
- 12 months on all our work
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Nearby places to Old Oak Common
More services for Old Oak Common
When to call us in Old Oak Common
Some failures date back to when the windows were fitted. Mastic laid onto dusty, damp or crumbling surfaces never bonded as it should, and it lets go sooner than it should.
Common reasons people contact us are:
- Draughts coming in around windows and doors
- Damp patches on the reveal after heavy rain
- Untidy mastic left by window fitters
- Draughty joints inside around the window
If you let a flat or house near Willesden Junction station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Questions to ask before booking
- Whether all the old sealant comes out first
- Are they insured?
- Whether VAT is included
- How the surfaces are prepared before sealing
Quotes for window mastic in Old Oak Common
You will get a clear quote before we start. It takes into account:
- The type of sealant required
- Working hours on commercial sites
- How much old sealant there is and how hard it is to remove
- The amount of work
Rather than a set price list, we price the job in front of us: the amount of work, the old material and the access. The price is agreed before we begin.
What we need to know
What to tell us when you ask for a quote:
- Pictures of the joints, sent by email
- Access, such as stairs, a lift or height
- What the problem is, such as mould, gaps, leaks or cracking
- Any previous sealing or DIY work
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is.
Window mastic in Old Oak Common: local notes
In London conversions and blocks, the lease decides who is responsible for the frames, so check that before you book. London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Schools such as Old Oak Primary School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s. Old Oak Common is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
Old Oak Common is about 1 mile south of Harlesden, in Greater London. Jobs in Old Oak Common get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Across Greater London, we cover 764 places, Old Oak Common among them. For nearby work, see our London page (7 miles or so).
All of NW10, W3 and NW26 is covered for window mastic. Local streets include Atlas Road, Tubbs Road and Waldo Road, all of which we cover. Other places close to Old Oak Common include College Park (1 mile north-east), Harlesden (1 mile north), Kensal Green (1 mile east), Park Royal (1 mile west) and North Kensington (1 mile east). Further out, we also cover London (7 miles east), City of Westminster (4 miles east), Marylebone (4 miles east), Kensington (3 miles south-east), St Pancras (6 miles east) and Shoreditch (7 miles east).
Landmarks near Old Oak Common
Locally, jobs take us to homes and businesses close to Green Man Public House, Library for Iranian Studies and Star Chamber Academy and the streets around them. Nearby too are Little Wormwood Scrubs (0.8 miles east) and St Claudine's Catholic School for Girls (0.8 miles north). Old Oak Common has its own railway station: Willesden Junction station. Other landmarks nearby include Westfield London (1.7 miles south-east) and Hammersmith Hospital (0.8 miles south-east). Open spaces near Old Oak Common include Hanger Hill Wood and Campden Hill.
How it works
Once we are on site, we compare the joints with what we discussed. If anything is different, we explain it before carrying on. Most jobs then take a few hours for a handful of frames, longer for a whole house. In Old Oak Common, as in most of London, parking needs a little planning. It helps if you can point us to a visitor permit or a bay close to the door.
- Each frame is looked over and we agree which ones need resealing.
- The old mastic is cut out and scraped back to clean surfaces.
- Where the gap is deep, backing rod goes in first.
- 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.
Before we arrive
- Where the joints are inside, avoid wetting them before we arrive
- Tell us about any water getting in
- Mention any parking rules near the property
Getting a quote
Every job is quoted individually. Just phone 0345 464 0079 or email us with the details.
Related advice
Landlord and commercial work in Old Oak Common
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements and we will give you a quote.
From a single let to a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a 12-month guarantee.
Why deal with it now?
Running fresh sealant over the old joint is tempting, but it won’t grip old, dirty sealant. It peels before long, and water still gets in behind. The old mastic has to come out. Damp from a failed joint spreads quietly in older London brickwork and timber, and by the time it shows on a wall or ceiling in Old Oak Common, the repair is bigger than the sealant job would have been.
Combining jobs into one visit is usually more efficient than separate visits, so tell us about everything that needs sealing. You will get one clear quote for the whole job.
Why choose Mr Mastic in Old Oak Common
- Colour picked to suit the job
- Every job guaranteed for a year
- A choice of colours where the product allows
- 20+ years of sealant experience
Should I try it myself first?
If you’ve already had a go yourself, that is fine. We cut it out and start again, so just mention it when you contact us.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and doesn’t move well, and the joint depth matters as much as the finish.
How the job changes by surface
Aluminium frames
Bi-fold and sliding aluminium doors have long frame joints, and the bottom joint sees the most water. We prepare and reseal every joint, backing the deep ones.
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.