Greater London · England
Window and door sealing in Hainault
Problem with your window and door frames in Hainault? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.
- Whistling draughts around closed windows
- Cracked or shrunken mastic around the frame
- Rain getting in at the frame or under the sill
The process
On the day, there’s very little for you to do. Show us the job and we’ll take it from there. The work itself takes anything from an hour or two to a full day, depending on how many frames there are, including the tidy-up. Many London jobs are in flats, so we come ready for stairs, narrow hallways and shared entrances. Mention any building rules, key holders or managing agents when you book.
- First, we confirm safe access to each frame.
- All the failed sealant is cut away.
- The surfaces are cleaned and left dry.
- Deep voids are backed, then the sealant is gunned in.
- We tool the joint so water runs off, then clear up.
Before we arrive
- For business premises, tell us about site rules or sign-in
- Mention if the joints have been sealed before
- Mention any tricky access
Get a quote
To get a quote, ring 07833 053749 or send us an email with the location and a short description of the problem. We will give you a clear quote before any work starts.
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How we handle window mastic in Hainault
A cold draught around a closed window often comes from the frame edge. A new joint stops the air getting through and quietens the whistle on windy days. If the draught is through the window seals instead, we’ll tell you. We work on patio & French doors, aluminium frames and uPVC windows, and people most often call us about cracked internal joints between frame and plaster and cracked sealant at the sill ends. Mastic man, silicone man or sealant specialist, the name varies; in Hainault, the job is the same: old material out, joints prepared and the right product used.
London homes have every kind of window, from timber sashes in period terraces to aluminium and uPVC in newer blocks. The mastic around them dries out and cracks with age, letting in draughts and water.
Every job is covered by our 12-month guarantee.
- Where
- Hainault (IG6, IG7, IG8)
- Wider area
- Greater London
- Cover
- One year on every job
- Quote
- A clear price before any work starts
- Call
- 07833 053749
- Page updated
- 26 October 2026
Hainault homes and the weather
In London conversions and blocks, the lease decides who is responsible for the frames, so it’s worth checking before booking. Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Managing a site like Limes Farm Junior School? Then the mastic around its windows and doors needs looking after like any other building’s. Homes close to St Francis of Assisi include some older properties, and frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Hainault is about 2 miles east of Woodford, in Greater London. Homes, rented property, offices and hotels in Hainault is covered for window mastic. Every job comes with our one-year guarantee. We cover 786 towns and villages across Greater London, large and small.
We work across IG6, IG7 and IG8 for window mastic. Local streets include Hughes Road, Neville Road and Addison Road. If you’re just outside Hainault, we cover Chigwell (1 mile north-west), Woodford Bridge (1 mile west), Woodford Wells (2 miles west), Woodford (2 miles west) and Buckhurst Hill (3 miles north-west). Larger places within reach include London (11 miles south-west), City of Westminster (12 miles south-west), Marylebone (12 miles south-west), Kensington (14 miles south-west), St Pancras (10 miles south-west) and Shoreditch (9 miles south-west).
Landmarks near Hainault
In Hainault, that means homes and buildings near Fairlop Waters, Kantor King Solomon High School and The New Fairlop Oak pub and the streets around them. The closest station to Hainault is Seven Kings station, roughly 2.8 miles south. Other landmarks nearby include Claybury Hospital (0.8 miles west) and Redbridge Museum (3.2 miles south). Green spaces nearby include Hainault Lodge and Highams Park Lake.
Your questions about window mastic in Hainault
Do you work for landlords with property near Seven Kings station?
Yes, rental work is part of what we do. Just call 07833 053749 or send us an email and tell us about the property, and we’ll send you a clear quote.
Is Hainault in your area for window mastic?
Yes, Hainault is within the area we cover. We work across London and the South East. Just call 07833 053749 or email us with a few details of the job.
Will the old sealant be removed?
Yes. Sealing over old sealant is the main reason resealing fails early, so we never do it.
Can you reach windows above the ground floor?
Usually, yes. Access is planned before any work starts, so mention the height and anything in the way.
Can you get sealant to suit coloured frames?
Yes. Anthracite grey, black, brown and white cover most frames, with clear as an option.
Can you do the inside joint as well?
Yes. The outside joint keeps the weather out, and the inside joint stops draughts and finishes the reveal. We do one or both.
How much does window mastic cost in Hainault?
We do not publish prices, because the cost depends on the job: its size, the old material, access and the product needed. You’ll get a clear quote before we start.
Will you leave a mess?
Not at all. We work neatly, protect the area around the joints and tidy up afterwards.
Also near Hainault
Other services in Hainault
For landlords and businesses
From a single let to a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a 12-month guarantee.
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
What affects the cost of window mastic
The price is agreed before any work begins. It’s based on:
- Any working-time requirements on site
- The number of rooms or windows
- The type of sealant required
- The size of the job
Combining jobs into one visit is normally more efficient than separate visits, so it’s worth mentioning everything you’d like done. You will get one clear quote for the whole job.
Helping us quote
When you call or email, it’s useful to know:
- Photos by email, if that is easy
- What’s wrong with the joints now
- If it’s domestic, commercial or a hotel
- Where the job is, and your postcode
Want a quote for window mastic? Please call 07833 053749 or email us and tell us about the job. We’ll explain what we’d do and give you a clear price before any work starts.
Should I try it myself first?
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
The biggest DIY mistake is sealing over old sealant. Silicone doesn’t stick to old silicone, so it lifts and traps water and mould underneath. All the old material has to come out first.
Leave it or put it right?
Resealing frames is a short job: the visit takes anything from an hour or two to a full day, depending on how many frames there are. Leave it until water is coming in and you may need plastering and decorating as well. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and by the time it shows on a wall or ceiling in Hainault, the repair is bigger than the sealant job would have been.
The cost reflects the work involved, not a rough estimate. That’s why we ask a few questions first.
Why choose Mr Mastic in Hainault
- Neat joints and a tidy finish
- Any old sealant cut out fully, not covered over
- Fully insured
- Rated 4.9 stars on Google
Take a look at how sealant jobs are priced or what customers say.
What the job involves on each surface
Timber windows & doors
Where timber has rotted at the joint, it needs repairing first. We will point out any rot we find, as a joiner will need to deal with it.
uPVC windows
We clean the frame edge carefully so the plastic is not marked, then the sealant goes in between frame and wall.
Common problems we fix in Hainault
Water runs down the glass onto the sill, so the sill ends and the joint below the frame are common leak points. When that sealant fails, water gets into the wall or under the frame.
Look out for these signs:
- Leaking joints at the ends of sills
- White mastic on grey or black frames
- Mastic that has split away from the wall
- Rushed sealant from a window installation
Rented homes near Seven Kings station change hands often, and renewing tired window mastic between tenants heads off draught and damp complaints.
Comparing quotes
- Who does the work, and how experienced they are
- Whether you can choose the colour
- Whether all the old sealant comes out first
- Which sealant they’ll use, and why