Greater London · England
Window & door mastic in Oakwood, Greater London
We cover Oakwood 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.
- Whistling draughts around closed windows
- Rushed sealant from a window installation
- Old mastic that has gone black or come away
Window mastic in Oakwood, done properly
From a single sill to a whole house of windows, you will get a clear quote before we start. Just call 0345 464 0079 or drop us an email and tell us how many frames there are and how they’re reached for window mastic in Oakwood. If you have white mastic on grey or black frames and cracked sealant at the sill ends, we can put it right, on window sills, patio & French doors and composite doors alike.
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.
There’s a 12-month guarantee on every job, large or small.
- Where
- Oakwood (N14, N21, EN2)
- Wider area
- Greater London
- Cover
- 12 months on all our work
- Quotes
- A clear price before we start
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
How it works
A visit follows a simple pattern: we look at the joints together, protect the area around them, carry out the job and tidy away. It generally takes a few hours for a handful of frames, longer for a whole house. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in Oakwood. A visitor permit or a nearby bay makes the visit run more smoothly.
- 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.
- A flexible, weatherproof sealant is applied in a colour to suit the frame.
- We clear up and check every joint is fully closed.
How to prepare
- Let us know about parking restrictions
- Tell us about any water getting in
- Mention any sign-in or site rules at work premises
How to get a quote
Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we’ll explain what’s involved before giving you a price.
Related advice
FAQs for Oakwood
Can you help a landlord with a rental near Winchmore Hill station?
Yes, rental work is part of what we do. Just phone 0345 464 0079 or email us and tell us about the property, and we’ll give you a clear price.
Can parking be tricky for a visit in Oakwood?
Parking in Oakwood, as in most of London, takes a little planning: a visitor permit or a nearby bay makes the day run more smoothly, so mention what’s available when you book.
Do you have insurance?
Yes, we are fully insured for domestic and commercial work.
How long does it take to reseal the windows on a house?
A handful of frames is a short visit. You’ll get a timescale with the quote.
Should I try DIY first?
Sometimes. Preparation is everything: all the old sealant out, and a clean, dry joint. If it does not work out, we can redo it.
Will the old sealant be removed?
Yes, every time. New silicone does not stick to old silicone, so the joint is cleaned back first.
Can you do upstairs windows?
Usually, yes. We plan safe access before the job.
Do you hold any approvals?
Yes. We are ARBOMaster approved, the scheme for applicators of Arbo sealants.
DIY sealant or a professional job?
The biggest DIY mistake is sealing over old sealant. New silicone will not bond to old, so it peels away and traps moisture behind it. Everything old must be removed first.
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly, so tell us about it when you ask for a quote.
Common problems we fix in Oakwood
Plenty of failed mastic was poorly applied in the first place. Mastic laid onto dusty, damp or crumbling surfaces didn’t grip properly, and it lets go sooner than it should.
People normally contact us when they notice something like this:
- Gaps left after new windows were fitted
- Black, perished sealant on frames
- Rain getting in at the frame or under the sill
- Gaps where the sill meets the wall
If you look after a building such as Wolfson Hillel Primary School, larger buildings have plenty of frames, and the mastic around each one ages.
Before you book anyone
- Whether the sealant suits the joint
- Whether they seal over old material or remove it
- How much experience the applicator has
- What guarantee comes with the work
When something else is needed
Before booking, it’s worth knowing the limits:
- Faulty window hardware
- Misting between the panes of a double-glazed unit (that needs a new unit)
- Damp coming through the wall itself rather than the frame joint
If in doubt, ring 0345 464 0079 or drop us an email and we will say what we think.
What we seal
- uPVC windows
- Aluminium frames
- Patio & French doors
- Window sills
- Timber windows & doors
- Composite doors
Windows and doors in Oakwood
In a converted house or block, who looks after the windows depends on the lease, so it’s worth checking before booking. With historic houses such as Forty Hall (about 3.1 miles north-east) nearby, there’s older building stock in the area around Oakwood as well as newer homes. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic.
Oakwood is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book. If you live in an older home near St Thomas's Church, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Oakwood is about 2 miles west of Enfield, in Greater London. Homes, rented property, offices and hotels in Oakwood is covered for window mastic. The work is guaranteed for a year. Oakwood is one of 764 places in Greater London where we work for window mastic. We also work in London, around 10 miles away.
Postcode districts we cover here for window mastic: N14, N21 and EN2. Whether your property is on Ivy Road, Green Road and Chase Road or anywhere close by, we can help. Close by, we work in World's End (1 mile east), Osidge (1 mile south-west), Southgate (1 mile south), Grange Park (1 mile east) and East Barnet (1 mile south-west). Within a short drive, we also cover London (10 miles south), City of Westminster (9 miles south), Marylebone (9 miles south), Kensington (10 miles south), St Pancras (8 miles south) and Shoreditch (8 miles south).
What’s near Oakwood
We work in homes and buildings around The New Crown pub, Oakwood Park and Southgate School and the streets around them. For rail, the closest station is Winchmore Hill station, roughly 1.3 miles south-east. Well-known places in the area include Grand Arcade (2.9 miles south-west) and Broomfield House Museum (1.9 miles south). Open spaces near Oakwood include Oakleigh Park Rail Cutting and Darland's Lake.
Landlord and commercial work in Oakwood
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
Hotels need rooms back in use, so the work can be planned room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
How we quote for window mastic
Your quote is based on your job. We look at:
- Any mould that needs treating
- Working hours on commercial sites
- Access and height
- How many rooms, windows or areas are involved
There are no prices on our website, because the cost depends so much on the job itself. For a quick quote, please phone 0345 464 0079 or send us an email and we will talk you through it.
Helping us quote
Before you ask for a quote, have a think about:
- The rough size of the job
- Pictures of the joints, sent by email
- Any previous sealing or DIY work
- What’s wrong with the joints now
We quote each job on its own, so start by telling us what you need. Simply call 0345 464 0079 or send us an email and describe the job and send photos if you have them.
Also near Oakwood
Other services in Oakwood
Keeping the joints in good condition
After the cure time, these simple habits help:
- Wipe condensation off the frames
- Keep paint and stain on wooden frames in good order
- Clear any debris from frame drain holes
- Walk round the house once a year and look at the joints
Check the drainage slots in the frames aren’t blocked, so rain drains out rather than building up at the sealant.
Water trapped behind a failed joint can start rot in timber frames and sills. Once wood has rotted, it needs repair before it can be sealed, so early resealing is worth it.