Greater London · England
Window & door mastic in Bounds Green, Greater London
Mastic around window and door frames, sills and patio doors for householders, landlords and businesses in Bounds Green. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Gaps left after new windows were fitted
- Gaps where the sill meets the wall
- Black, perished sealant on frames
How we quote for window mastic
The price is agreed before any work begins. It takes into account:
- Whether there’s mould to deal with
- When we can work, for business premises
- Access and height
- Which sealant suits the joint
The cost depends on how much there is to do, how much old material has to come out and access to the work. We give a clear quote before any work starts, so you know where you stand.
Helping us quote
To make quoting easier, let us know:
- If someone has resealed it before
- A few pictures by email, if you can
- Any access issues, like height or stairs
- What’s wrong with the joints now
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we’ll explain what’s involved and give you a clear quote.
Window mastic in Bounds Green
Around Bounds Green we seal all kinds of frames: from uPVC casements to timber and aluminium, plus patio doors, French doors and sills. Each gets a sealant chosen for the frame and the wall it meets. We work on timber windows & doors, window sills and aluminium frames, and common reasons people get in touch are untidy mastic left by window fitters and cracked sealant at the sill ends.
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 Bounds Green.
A 12-month guarantee comes as standard, so you’re not left on your own once the job is done.
- Place
- Bounds Green (N22, N11, N13)
- Region
- Greater London
- Cover
- 12 months on all our work
- Quote
- A clear price before work begins
- Call
- 0345 464 0079
- Updated
- 26 October 2026
How it works
When we arrive, we look over the joints with you first. Surfaces next to the work are protected before any work starts. Most jobs take most of a day for a typical house, less for a few frames. In a London area like Bounds Green, the main things to plan are parking and access: tell us about permits, visitor bays or off-street space, which floor we are working on and whether there’s a lift.
- First, we confirm safe access to each frame.
- Old, cracked mastic is removed completely.
- The surfaces are cleaned and left dry, and primed where the sealant calls for it.
- 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
- Let us know about parking restrictions
- On commercial sites, let us know about site rules
- Plan for the work area to be out of bounds to pets and children
Getting a quote
To get a quote, phone 0345 464 0079 or drop 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.
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Also near Bounds Green
Also in Bounds Green
Windows and doors in Bounds Green
London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. In London conversions and blocks, the lease decides who is responsible for the frames, so check that before booking.
In the older streets around St Barnabas Greek Orthodox Church, frames set in older brick or stone need a sealant that suits the wall as well as the frame. Rented homes near Bowes Park station change hands often, and sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
Bounds Green is about 2 miles east of Finchley, in Greater London. Anywhere in N22, we cover window mastic for homes and businesses. Across Greater London, we cover 764 places, Bounds Green among them. Our London page covers work nearby.
Every address in N22, N11 and N13 is within our area for window mastic, from the main roads to the quietest streets. Whether your property is on Oak Lane, York Road and Park Road or a nearby road, we can help. Bounds Green sits on or near the A109. If you’re just outside Bounds Green, we cover Bowes Park (1 mile south-east), Arnos Grove (1 mile north), New Southgate (1 mile north-west), Oakthorpe Park (1 mile north-east) and Palmers Green (1 mile north-east). We also work in nearby towns such as London (8 miles south), City of Westminster (6 miles south), Marylebone (6 miles south), Kensington (8 miles south-west), St Pancras (6 miles south) and Shoreditch (6 miles south).
Near you in Bounds Green
Typical jobs here are in homes near Ming-Ai, O. R. Tambo Recreation Ground and The Springfield pub and the streets around them. Bounds Green has its own railway station: Bowes Park station. Other landmarks nearby include Broomfield House Museum (0.8 miles north-east) and Greentrees Hospital (1.1 miles east). Not far away are Glebelands Local Nature Reserve and Darland's Lake.
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 getting the depth right matters as much as the look.
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
Looking after it afterwards
After the cure time, these simple habits help:
- Avoid harsh chemicals near the mastic
- Repaint timber before it’s bare
- Make sure the drainage slots aren’t blocked
- Wash the frames with mild soapy water
Clean the frames with mild soapy water, and keep solvents and harsh chemicals off the joint.
Signs to watch for: cracks in the mastic, gaps you can see light through, damp on the reveal or mould around the inside of the frame. If you notice one, it’s time to get the joint looked at.
Your questions about window mastic in Bounds Green
Can you do window mastic in Bounds Green?
Yes, Bounds Green is within the area we cover. Our work covers London and the South East. You can phone 0345 464 0079 or send us an email and let us know what needs doing, and we’ll give you a clear price.
Do you work for landlords with property near Bowes Park station?
Yes. We work for landlords and agents as well as homeowners, and several properties can be quoted together. You can call 0345 464 0079 or send us an email with the details for a clear quote.
What do you need from me for a quote?
Tell us what needs doing and where. We’ll ask anything else we need to know.
Do you guarantee window mastic?
Yes, for 12 months. A yearly look at the joints helps them last.
Can I paint over the new sealant?
Silicone generally will not take paint. Let us know beforehand, and we’ll use a paintable product where it suits.
Do you work for hotels and businesses?
Yes. Hotels, offices and other businesses use us and we’re fully insured.
Do I need to be at home?
We need access to the joints, so we’ll agree that with you when we book. For inside work, that normally means someone being in.
Will it make a mess?
Tidy work is part of the job. Nearby surfaces are protected.
Work for landlords, hotels and businesses
For anyone letting property in or around Bounds Green, jobs at different addresses can go on one quote. Send us the addresses and the work at each, and photos by email help.
Housing providers, facilities teams and property managers book us too. We can quote a run of properties together.
Signs you need window mastic in Bounds Green
Timber windows bring their own problems. Old mastic gets painted over and cracks under the paint, and timber moves with moisture as well as temperature.
These are the problems we’re asked about most:
- Leaking joints at the ends of sills
- Mastic that’s falling out in pieces
- Rushed sealant from a window installation
- Hard, cracked sealant around windows
As a London address, Bounds Green can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
Comparing quotes
- Is VAT in the price?
- How the colour is chosen
- What happens if the job turns out different
- How much experience the applicator has
When it is not the sealant
We will always be straight with you, so here’s what sealant can’t fix:
- A sash or casement that will not close properly
- Worn gaskets, brush seals or a door that has dropped
- Damp coming through the wall itself rather than the frame joint
If in doubt, call 0345 464 0079 or email us and we’ll say what we think.
What we seal
- Window sills
- Composite doors
- uPVC windows
- Aluminium frames
- Patio & French doors
- Timber windows & doors