Greater London · England
Window & door mastic in Wood Green, Greater London
Professional window mastic in and around Wood Green, with old sealant always removed completely and a 12-month guarantee.
- Mastic that has split away from the wall
- Leaking joints at the ends of sills
- Water coming in at the bottom corners of a door
Window mastic for homes and businesses in Wood Green
Most frames have an outside joint and an inside one. Outside, the mastic keeps rain out; the internal joint closes the gap to the plaster and stops draughts. We seal one or both, depending on what’s needed. We work on composite doors, aluminium frames and patio & French doors, and the jobs we see most are damp patches on the reveal after heavy rain and cracked internal joints between frame and plaster.
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 something isn’t right with it in that time, tell us and we will put it right.
- Location
- Wood Green (N22, N8)
- Wider area
- Greater London
- Guarantee
- One year on every job
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
What affects the cost of window mastic
Your quote is based on your job. We take into account:
- The size of the job
- How much old sealant there is and how hard it is to remove
- Whether there’s mould to deal with
- The product the joint needs
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.
What to tell us for a quote
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- The problem you’ve noticed
- A few pictures by email, if you can
- If someone has resealed it before
- Access, such as stairs, a lift or height
For a quote, phone 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. You’ll have a clear quote before work begins.
Frames and glazing around Wood Green
In London conversions and blocks, the lease decides who is responsible for the frames, so check that before booking. Historic houses like Bruce Castle (about 1.4 miles east) are a reminder that the area around Wood Green has older buildings as well as new. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
Wood Green is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book. For landlords with property near Alexandra Palace station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets. If you live in an older home near Church of St Michael and All Angels, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Wood Green is about 3 miles south-west of Edmonton, in Greater London. Whether you are in the middle of Wood Green or further out, we cover window mastic for every kind of property, from flats and houses to offices and hotels. Wood Green is one of 764 towns and villages in Greater London we cover. We also work in London, about 7 miles from Wood Green.
Every address in N22 and N8 is covered for window mastic. We cover properties on Vincent Square, Station Road and Gathorne Road. Wood Green is on the B151, so it’s easy for us to get to. Close by, we work in Noel Park (1 mile south-east), Turnpike Lane (1 mile south), Hornsey (1 mile south-west), Crouch End (1 mile south-west) and Stroud Green (2 miles south). Larger places within reach include London (7 miles south), City of Westminster (6 miles south), Marylebone (6 miles south), Kensington (8 miles south-west), St Pancras (5 miles south) and Shoreditch (5 miles south).
Local landmarks in Wood Green
In Wood Green, that means homes and buildings near St Thomas More Catholic School, Woodside Park and The Nag's Head pub. Wood Green’s nearest station is Alexandra Palace station, about 0.5 miles west of the centre. A little further out are Broomfield House Museum (1.3 miles north) and The Mall Wood Green (within half a mile south). Open spaces near Wood Green include Railway Fields and Highgate Hill.
Towns and villages near Wood Green
What else we do in Wood Green
Leave it or put it right?
Running fresh sealant over the old joint is tempting, but it won’t grip old, dirty sealant. It soon lifts and the leak carries on behind it. The old mastic has to come out. In London conversions, one flat’s bathroom is often above another flat’s ceiling, so a small leak from tired sealant can mean a neighbour’s ceiling and a lot of disruption. Putting it right early is much less trouble for homes in Wood Green.
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 you get with us
- A choice of colours where the product allows
- We never seal over old sealant
- 12-month guarantee on every job
- A sealant colour to suit the surroundings
Different surfaces, different methods
Composite doors
Front doors take the weather head on. We pay most attention there.
uPVC windows
Some uPVC windows were sealed at fitting with a quick bead that never bonded. We cut it out, back any deep gaps and reseal properly.
For landlords and businesses
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements and we’ll give you a quote.
Housing providers, facilities teams and property managers book us too in Wood Green and across Greater London. We can quote a run of properties together, and we’re fully insured.
Should I try it myself first?
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Wood Green: your questions answered
Can parking be tricky for a visit in Wood Green?
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.
Is Wood Green in your area for window mastic?
Yes, Wood Green is within the area we cover. We work across London and the South East. Just ring 0345 464 0079 or send us an email with a few details of the job.
Will you leave a mess?
No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.
What sealant do you use?
The product depends on the job: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. Brands we use include Arbo and Everbuild.
Will the old sealant be removed?
Yes. Sealing over old sealant is the main reason resealing fails early, and it’s something we never do.
Can resealing stop a draught around my window?
Often, yes. Air often gets in between the frame and the wall, and sealing the inside and outside joints closes that path.
Are you insured?
Yes. We are fully insured for every job we do.
Do you work for hotels and businesses?
Yes. We can plan bigger jobs in stages to suit the site.
What happens on the day
All our tools and materials come with us in the van, so you don’t need to buy or prepare anything. Once we’ve agreed what’s being done, the area is protected and the work begins. It normally takes most of a day for a typical house, less for a few frames. In a London area like Wood Green, the main things to plan are parking and access: tell us about permits, visitor bays or off-street space, which floor we’re working on and whether there’s a lift.
- We check how each frame can be reached safely.
- Old, cracked mastic is removed completely, along with any loose debris.
- Frame and wall are cleaned and must be dry before sealing.
- Backing rod fills deep voids and the sealant goes in on top.
- We tool the joint so water runs off, then clear up.
How to prepare
- Tell us about any previous sealing or DIY attempts
- Keep children and pets away from the work area
- Mention any leaks or damp you’ve noticed
How to get a quote
If you’re in Wood Green and need window mastic, phone 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and we will agree the price before any work begins.
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Looking after it afterwards
A little care helps the new joints last. Our advice:
- Clear any debris from frame drain holes
- Check the mastic once a year
- Ventilate rooms so frames do not stay wet inside
- Avoid blasting the frames with a pressure washer
Try not to touch the new joint while it cures, following the cure time we give you. Do not point a pressure washer at the joints.
On timber windows, water behind the joint can lead to rot. Rotten timber needs a joiner, not a sealant, so early resealing is worth it.