Greater London · England
Window & door mastic in The Hale, Greater London
Mastic around window and door frames, sills and patio doors for homes and businesses in The Hale and across Greater London. Fully insured, ARBOMaster approved and guaranteed for a year.
- Sealant in the wrong colour for the frame
- Water coming in at the bottom corners of a door
- Black, perished sealant on frames
What the job involves on each surface
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.
Timber windows & doors
Soft or rotten wood cannot be sealed successfully. We’ll point out any rot we find, as a joiner will need to deal with it.
Window mastic for homes and businesses in The Hale
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 will tell you. If you have water coming in at the bottom corners of a door and draughts coming in around windows and doors, we can help, on composite doors, patio & French doors and timber windows & doors alike.
London’s Victorian and Edwardian terraces were built with timber sash windows, and many still have them or their replacements. Whatever is in the opening now, the joint between frame and wall is what keeps the weather out, in The Hale as anywhere.
Our work is backed for twelve months.
- Where
- The Hale (HA8, NW7)
- Region
- Greater London
- Cover
- 12 months on all our work
- Quotes
- A clear price before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Places near The Hale
More services for The Hale
How the visit works
On the day, there’s very little for you to do. Point us to the joints and we will get on with it. The work itself takes a few hours for a few frames, or a day or more for a whole house from start to finish. For a job in The Hale, 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.
Preparing for the visit
- Tell us about any water getting in
- Plan for the work area to be out of bounds to pets and children
- Tell us about any previous sealing or DIY attempts
How to get a quote
If you’re in The Hale and need window mastic, call 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and we’ll agree the price before any work begins.
Read more
Landlords, agents and businesses in The Hale
Hotels need rooms back in use, so the work can be planned room by room. Hotel work is part of what we do, alongside homes and businesses.
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
How to look after the new joints
Good habits help new joints last longer. A few tips:
- Use gentle cleaners on frames and sealant
- Keep jet washers away from the mastic
- Repaint timber before it’s bare
- Look round the frames every year or so
Most silicone sealants will not take paint, so if you are planning to paint the frames or walls, tell us beforehand. There are paintable sealants for joints that need it.
A small gap around a frame only grows. As the old mastic shrinks further, more air gets through, and heat escapes around the frame. A new joint closes it up.
Leave it or put it right?
Getting a straight, even bead on an outside frame takes practice, especially on upper floors. We cut out properly, back deep gaps and tool every joint neatly, in a sealant suited to the wall. Damp from a failed joint spreads quietly in older London brickwork and timber, and by the time it shows on a wall or ceiling in The Hale, the repair is bigger than the sealant job would have been.
There are no prices on our website, because the cost depends so much on the job itself. For a quick quote, please call 0345 464 0079 or drop us an email.
What you get with us
- Old sealant always removed completely
- Full insurance on every job
- Arbo and Everbuild products
- Over 20 years’ experience
Take a look at how sealant jobs are priced and our reviews.
Frames and glazing around The Hale
In London conversions and blocks, the lease decides who is responsible for the frames, so it’s worth checking before booking. Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Homes close to John Keble Church include some older properties, and the joint between an old wall and a newer frame is generally the first place rain gets in. Managing a site like Mathilda Marks-Kennedy Jewish Primary School? Then its window and door frames need their mastic kept sound, just like a home’s. Rented homes near Mill Hill Broadway 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.
The Hale is about 1 mile north of Burnt Oak, in Greater London. Across the HA8 area, our applicators can take on window mastic. The Hale is one of 764 places in Greater London we cover for window mastic. There’s also a page for London, about 11 miles away.
Every address in HA8 and NW7 is within our area for window mastic, from the main roads to the quietest streets. Local streets include Hale Lane, Farm Road and Dean's Lane, and we cover them all. Being close to the A5100, The Hale is simple for us to get to. Close by, we work in Edgware (1 mile west), Broadfields Estate (1 mile north-west), Burnt Oak (1 mile south), Mill Hill (1 mile east) and Edgware Bury (1 mile north-west). Further out, we also cover London (11 miles south-east), City of Westminster (9 miles south-east), Marylebone (9 miles south-east), Kensington (9 miles south), St Pancras (9 miles south-east) and Shoreditch (10 miles south-east).
Around The Hale
Typical jobs here are in homes near St Martin's School Brentwood, The Northgate School and Rising Sun pub and the streets around them. For rail, the closest station is Mill Hill Broadway station, roughly 0.7 miles south-east of the centre. Nearby you will also find Broadwalk Centre (0.8 miles south-west) and Edgware Community Hospital (1 mile south-west). Not far away are Mill Hill Old Railway Nature Reserve and Darland's Lake.
DIY versus a professional finish
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
How we quote for window mastic
Call for a quick quote. What matters most is:
- The type of sealant required
- Whether the work is at height
- Whether there’s mould to deal with
- The size of the job
Doing several joints on one visit is normally more efficient than separate visits. We’ll give you a clear price for the lot.
Helping us quote
Photos by email are helpful but not essential. Please mention:
- Whether it has been sealed before
- Where the job is, and your postcode
- Access, such as stairs, a lift or height
- Photos by email, if that’s easy
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is, and add pictures by email if you can.
Common questions in The Hale
Can you help a landlord with a rental near Mill Hill Broadway station?
Yes. We work for landlords and letting agents as well as homeowners. You can phone 0345 464 0079 or send us an email with the details for a clear quote.
Do you cover The Hale for window mastic?
Yes. We work across London and the South East, and The Hale is part of that. You can ring 0345 464 0079 or email us and let us know what needs doing, and we will give you a clear price.
Is it OK to seal over old sealant?
No, and we never do. It can look neat for a few weeks, but the new bead soon lifts. Removing the old sealant completely is the only lasting way.
Do you guarantee window mastic?
Yes, with our 12-month guarantee. A yearly look at the joints helps them last.
Will it make a mess?
Not at all. The area is protected while we work and cleaned up afterwards.
What sealant do you use?
It depends on the joint: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. Brands we use include Arbo and Everbuild.
Do the sealants smell?
It depends on the product. Some smell for a while, some hardly at all.
Are you an approved applicator?
Yes. We are an ARBOMaster approved applicator, the approved applicator scheme for Arbo sealants.