Greater London · England
Barkingside Window Mastic
Window mastic across Barkingside and nearby, with every bit of old sealant taken out first and a 12-month guarantee.
- Cold air getting in at the frame edge
- Draughty joints inside around the window
- Sealant in the wrong colour for the frame
Why deal with it now?
Resealing frames is a short job: it takes anything from an hour or two to a full day, depending on how many frames there are. Wait for damp to appear and there may be plaster and decorating to sort out too. In London conversions, one flat’s bathroom is often above another flat’s ceiling, and a slow leak from a failed seal can end up in the flat below. Putting it right early is much less trouble.
Instead of a standard rate, we price the job in front of us: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
Why us?
- Domestic, commercial and hotel work
- Approved under the ARBOMaster scheme
- Anti-fungal silicone where joints get wet
- Neat joints and a tidy finish
Read our cost guide or our reviews.
Window mastic in Barkingside, done properly
Behind a thin line of old mastic there’s sometimes a deep void. Packing it solid with sealant gives a joint that cannot flex, so deep gaps get backing rod first. The sealant then grips the two sides it should. If you are dealing with cracked or shrunken mastic around the frame and old mastic that has gone black or come away, we can help.
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.
Every job comes with a one-year guarantee, wherever you are in Greater London.
- Location
- Barkingside (IG6, IG2, IG5)
- Wider area
- Greater London
- Guarantee
- One year on every job
- Quotes
- A clear price before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
DIY sealant or a professional job?
A DIY attempt does not rule out a professional job. We remove it and do the joint properly, so tell us about it when you ask for a quote.
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.
What happens on the day
Every visit runs the same way: we look at the joints together, mask and protect the surrounding surfaces, carry out the job and tidy away. Most jobs take most of a day for a typical house, less for a few frames. For a job in Barkingside, parking and access are the things to plan: let us know about parking, the floor we will be working on and any lift or shared entrance.
- 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.
- A flexible exterior sealant is applied in a colour to suit the frame.
- We tool each bead neatly and check every joint is closed.
How to prepare
- Where the joints are inside, avoid wetting them before we arrive
- Keep children and pets away from the work area
- Mention if the joints have been sealed before
How to get a quote
For a quick quote, get us on the phone, or email us if that’s easier. Describe what needs sealing and we will explain what’s involved before giving you a price.
Advice
What affects the cost of window mastic
Jobs vary more than people expect. The main factors:
- Access and height
- When we can work, for business premises
- How much old sealant there is and how hard it is to remove
- The product the joint needs
No two jobs are quite the same, so we quote each one individually. Size, access and the product the joint needs all make a difference, and we will explain the quote if you ask.
What to tell us for a quote
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- How many joints, rooms or windows are involved
- Whether it has been sealed before
- What’s wrong with the joints now
- Pictures of the joints, sent by email
Need a quote? Please phone 0345 464 0079 or send us an email and tell us about the job. We’ll explain what we’d do and give you a clear price before we start.
Common questions in Barkingside
Do you work for landlords with property near Seven Kings station?
Yes, we work for landlords and agents. You can call 0345 464 0079 or send us an email with the address and a few details, and we’ll give you a fixed price before any work starts.
Is parking an issue for window mastic in Barkingside?
Parking in Barkingside, as in most of London, takes a little planning: a visitor permit or a bay close to the door helps a lot, so mention what’s available when you book.
Will resealing my frames help with draughts?
Yes, if the air is getting in around the frame. If it’s coming through the window seals, we’ll tell you.
Do you come to Barkingside?
Yes. We are based in Crawley and work across South East England, London and Scotland, and that includes Barkingside.
What do you put in the joint?
Quality sealants from brands including Arbo and Everbuild, picked for each joint. We explain the product when we quote.
Are you an approved applicator?
Yes. We are approved under the ARBOMaster scheme, which is run for the Arbo sealant brand.
Can you seal the gap between the frame and the plaster indoors?
Yes. Plenty of draughts come through the inside joint as well as the outside, so it can be worth sealing both.
How much does window mastic cost in Barkingside?
The cost depends on the size of the job, access and how much old sealant has to come out. Ask us for a quote.
Window mastic in Barkingside: local notes
Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. Historic houses like Valentines Mansion (about 1.2 miles south-west) are a reminder that the area around Barkingside has older buildings as well as new. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic.
Schools such as Avanti Court Primary School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s. Letting a property close to Seven Kings station? Then renewing tired window mastic between tenants heads off draught and damp complaints.
Barkingside is about 3 miles south-east of Woodford, in Greater London. Whether you are in the middle of Barkingside or further out, we cover window mastic for every kind of property, from flats and houses to offices and hotels. Barkingside is one of 764 places in Greater London we cover. We also work in London, about 10 miles from Barkingside.
All of IG6, IG2 and IG5 is covered for window mastic, from the main roads to the quietest streets. You will find streets such as Bute Road, Duke Road and Oaks Lane. We also cover the places around Barkingside: Newbury Park (1 mile south), Fullwell Cross (1 mile north), Gants Hill (1 mile south-west), Fairlop (1 mile north) and Seven Kings (1 mile south-east). Larger places within reach include London (10 miles south-west), City of Westminster (11 miles south-west), Marylebone (11 miles south-west), Kensington (14 miles south-west), St Pancras (10 miles south-west) and Shoreditch (8 miles south-west).
Landmarks near Barkingside
Around Barkingside, our work takes us to homes and buildings near The New Fairlop Oak pub, Fairlop Waters and Ilford County High School. The nearest railway station is Seven Kings station, roughly 1.6 miles south. Other landmarks nearby include King George Hospital (1.2 miles east) and Redbridge Museum (2 miles south). Not far away are Hollow Pond and Hainault Lodge.
When to call us in Barkingside
Mastic ages in the weather. UV light hardens the outside of the bead, and over the years it loses its give, cracks and comes away.
These are the problems we’re asked about most:
- Untidy mastic left by window fitters
- A bead that doesn’t match the frame
- Leaking joints at the ends of sills
- Mastic that’s falling out in pieces
Barkingside is in London, so parking needs planning: let us know about parking bays, permits or a driveway.
Questions to ask before booking
- Is VAT in the price?
- Are they insured?
- Who does the work, and how experienced they are
- Is the old sealant removed completely?
Looking after it afterwards
Simple care keeps the joints in good condition. Our advice:
- Don’t use solvent cleaners on the joint
- Make sure the drainage slots are not blocked
- Check the mastic once a year
- Repaint timber before it’s bare
Check the drainage slots in the frames aren’t blocked, so water can run away instead of sitting against the joint.
On timber windows, water behind the joint can lead to rot. Once wood has rotted, it needs repair before it can be sealed, so it pays to reseal before that happens.
When it is not the sealant
Some problems need a builder, plumber or other trade rather than us:
- Broken hinges, locks or handles
- Draughts through the window seals rather than the frame
- Damp problems in the wall away from the window
If in doubt, call 0345 464 0079 or send us an email and we will say what we think.
Where we work in Barkingside
- Patio & French doors
- Window sills
- uPVC windows
- Composite doors
- Timber windows & doors
- Aluminium frames