Greater London · England
Window Mastic in Chingford Hatch
Our applicators work in Chingford Hatch on mastic around window and door frames, sills and patio doors. Old sealant removed completely, joints prepared properly and a 12-month guarantee.
- Rushed sealant from a window installation
- Leaking joints at the ends of sills
- Mastic that has split away from the wall
Window mastic in Chingford Hatch
Homes in Chingford Hatch have every kind of window: uPVC, aluminium, timber and composite, plus patio doors, French doors and sills. Each gets a sealant chosen for the frame and the wall it meets. We work on patio & French doors, composite doors and uPVC windows, and common reasons people get in touch are draughts coming in around windows and doors and cracked internal joints between frame and plaster.
Many London homes are flats, with windows high above the street. In a converted house or block, the lease generally says who is responsible for the windows, so it’s worth checking before booking.
All of our work is guaranteed for twelve months, and the guarantee is the same wherever you are.
- Place
- Chingford Hatch (E4, IG8)
- Wider area
- Greater London
- Cover
- One year on every job
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
DIY versus a professional finish
Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it peels away and traps moisture behind it. All the old material has to come out first.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
FAQs for Chingford Hatch
Is Chingford Hatch in your area for window mastic?
Yes. Our work covers London and the South East, and Chingford Hatch is part of that. You can phone 0345 464 0079 or drop us an email and tell us what needs doing, and we’ll give you a clear price.
Do you work for landlords with property near Highams Park station?
Yes, we work for landlords and agents. Just call 0345 464 0079 or email us and tell us about the property, and we will give you a clear quote.
Can you get sealant to suit coloured frames?
Yes. White, brown, anthracite grey, black and clear sealants are all available, so the joint suits the frame.
Where is Mr Mastic based?
We are based in Crawley, and we work across South East England, London and Scotland.
Can you seal over the old sealant?
No. New silicone will not bond to old silicone, and anything trapped underneath, including mould and water, stays there. It all has to come out first.
Do you hold any approvals?
Yes. We are an ARBOMaster approved applicator.
What do you need from me for a quote?
Where the job is, what the problem is and roughly how big it is. If you can, email a few photos.
Will new mastic stop draughts?
It will if the frame joint is the problem. We check where the draught is before any work starts.
Different surfaces, different methods
Aluminium frames
Aluminium moves with heat, and the frames are often slimmer than uPVC. A tidy bead in anthracite grey, black or a matching colour suits the frame.
uPVC windows
The frame is cleaned with a product that won’t harm the plastic, then the new bead is laid against the frame and the wall.
Keeping the joints in good condition
So the new joints stay in good condition:
- Walk round the house once a year and look at the joints
- Keep jet washers away from the mastic
- Keep paint and stain on wooden frames in good order
- Wash the frames with mild soapy water
Keep the new mastic undisturbed while it cures, for as long as we advise. Don’t 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 it pays to reseal before that happens.
Why it’s worth doing now in Chingford Hatch
Choosing the product is half the job. Decorators’ caulk and bathroom silicone aren’t designed for outside joints that move. An exterior, low-modulus sealant stays flexible in sun and frost. In a London flat, a failed joint rarely stays your problem alone: water from a shower or window joint can reach the flat below, and gaps in fire-stopping matter to everyone in the building.
Leaving a failed joint generally makes the job bigger, not smaller, as water and mould keep getting in. If you are not sure whether it needs doing, phone 0345 464 0079 or email us for an honest opinion and a quote.
What you get with us
- You choose the colour before work begins
- Rated 4.9 stars on Google
- White, clear, grey or another colour, product permitting
- Anti-fungal sanitary silicone in wet areas
Take a look at our cost guide and our reviews.
What window mastic looks like in Chingford Hatch
With historic houses such as Bruce Castle (about 3.7 miles west) nearby, there’s older building stock in the area around Chingford Hatch as well as newer homes. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic. Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Rented homes near Highams Park station change hands often, and 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 All Saints Church of England Highams Park, the joint between an old wall and a newer frame is generally the first place rain gets in.
Chingford Hatch is about 1 mile south-east of Chingford, in Greater London. Across the E4 area, we can carry out window mastic at your property. Our area takes in 764 places across Greater London. We also work in London, around 9 miles away.
Every address in E4 and IG8 is covered for window mastic. That includes homes and businesses on New Road, The Avenue and Weale Road. Chingford Hatch is on the A1009, so it’s easy for us to get to with everything needed for window mastic. We also cover Friday Hill (1 mile north-east), Chingford (1 mile north-west), Monkhams (1 mile east), Hale End (1 mile south) and Chingford Mount (1 mile west). We also work in nearby towns such as London (9 miles south-west), City of Westminster (10 miles south-west), Marylebone (10 miles south-west), Kensington (12 miles south-west), St Pancras (8 miles south-west) and Shoreditch (7 miles south-west).
Near you in Chingford Hatch
Around Chingford Hatch, our work takes us to homes and buildings near The Highams Park, Heathcote School & Science College and Kings Head pub and the streets around them. The nearest railway station is Highams Park station, roughly 0.7 miles south. Nearby you’ll also find Edmonton Green Shopping Centre (2.7 miles west) and Wanstead Hospital (2.5 miles south). For a walk, there’s Pole Hill and Ainslie Wood.
When it is not the sealant
New sealant can’t fix everything, and we’d rather say so up front. It will not solve:
- Draughts through the window seals rather than the frame
- Misting between the panes of a double-glazed unit (that needs a new unit)
- Soft or decayed wood in the frame
Not sure which it is? You can phone 0345 464 0079 or send us an email and we will tell you honestly before you book.
Joints and surfaces we work on
- Window sills
- Composite doors
- Timber windows & doors
- uPVC windows
- Patio & French doors
- Aluminium frames
Also near Chingford Hatch
What else we do in Chingford Hatch
What happens on the day
You do not need to clear the whole room or building, only the area right around the joints. We protect the rest, and the job takes a morning for a couple of windows and a door in most cases. In Chingford Hatch, flats, stairs and shared entrances are part of the routine. If the building has a concierge, managing agent or access rules, tell us when you book.
- We check each frame and agree which ones need doing.
- The old mastic is cut out and the surfaces cleaned back.
- We fit backing rod in deep gaps so the sealant is the right depth.
- A flexible, weatherproof sealant is applied in a colour to suit the frame.
- Every joint is checked before we leave.
Before we arrive
- Let us know about parking restrictions
- Clear the area around the work
- On commercial sites, let us know about site rules
Getting a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we will explain how we’d tackle it. Whenever you’re ready, phone 0345 464 0079 or email us.
Related advice
Common problems we fix in Chingford Hatch
Timber windows bring their own problems. Old mastic gets painted over and cracks under the paint, and the wood moves with damp as well as heat.
Common reasons people contact us are:
- Rushed sealant from a window installation
- Water coming in at the bottom corners of a door
- Whistling draughts around closed windows
- Hard, cracked sealant around windows
Chingford Hatch is in London, so parking needs planning: let us know about parking bays, permits or a driveway.
Questions to ask before booking
- What happens if the job turns out different
- Are they insured?
- What preparation is included
- What the quote includes, VAT included or not