Greater London · England
Edgware Bury Window Mastic
Problem with your window and door frames in Edgware Bury? We remove the old material, prepare the joints and seal them properly.
- Rushed sealant from a window installation
- Whistling draughts around closed windows
- A bead that doesn’t match the frame
How we handle window mastic in Edgware Bury
A cold draught around a closed window often comes from the frame edge. Resealing that joint can make a room feel noticeably less draughty and quietens the whistle on windy days. Where the air is getting in through the window itself, we’ll say so. We work on composite doors, patio & French doors and aluminium frames, and people most often call us about mastic that has split away from the wall and a bead that doesn’t match the frame.
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 Edgware Bury as anywhere.
Big or small, it’s backed by our 12-month guarantee in Edgware Bury and across Greater London.
- Where
- Edgware Bury (HA8)
- Wider area
- Greater London
- Guarantee
- 12 months on all our work
- Quote
- A clear price before work begins
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
What happens if it’s left?
A cracked joint around a frame lets rain into the wall. Over time that can mean damp patches, damaged plaster and rotting timber. A reseal is a much smaller job. 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. Dealing with it early is far simpler.
What you pay reflects the work, not a rough estimate. That’s why we ask a few questions first.
What you get with us
- A 12-month guarantee on all work
- Anti-fungal sanitary silicone in wet areas
- Arbo and Everbuild products
- Over 20 years’ experience
Read our cost guide and customer reviews.
Edgware Bury questions
Do you work for landlords with property near Elstree & Borehamwood station?
Yes, rental work is part of what we do. You can ring 0345 464 0079 or email us with the address and a few details, and we’ll give you a fixed price before work begins.
Can you do window mastic in Edgware Bury?
Yes, Edgware Bury is within the area we cover. We work across London and the South East. You can phone 0345 464 0079 or email us and tell us what needs doing, and we will give you a clear quote.
Can you seal over the old sealant?
No, because it fails. We remove every bit of old sealant first, so the new joint bonds to clean surfaces.
What information do you need?
Where the job is, what the problem is and roughly how big it is. Photos by email help too.
How long should I leave it?
Most sealants are touch-dry well before they’re fully cured. We’ll tell you how long to leave the joint before we leave.
Do you have insurance?
Yes. We’re fully insured, with over 20 years’ experience in sealant work.
Can I add another job to the visit?
Yes. Several rooms, windows or areas can go on one quote.
Do you remove the old sealant?
Yes, every time. New silicone does not stick to old silicone, so the joint is cleaned back first.
Landlord and commercial work in Edgware Bury
Hotels need rooms back in use, so we plan the work 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. On commercial sites, working times can be discussed when we quote.
Also near Edgware Bury
More services for Edgware Bury
What happens on the day
The work is kept neat and contained to the joints we’re treating, so you can get on with your day. The job usually takes a few hours for a handful of frames, longer for a whole house, and we explain the cure time before we leave. 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 go round the frames with you and agree the list.
- The old mastic is cut out and scraped back to clean surfaces.
- Deep gaps get closed-cell backing rod to set the depth.
- A flexible exterior sealant is applied in a colour to suit the frame.
- We tool each bead neatly and check every joint is closed.
Getting ready for the visit
- Mention any parking rules near the property
- Mention any leaks or damp you’ve noticed
- For business premises, tell us about site rules or sign-in
Get a quote
There’s no standard price list, because every job is different. Instead, your job gets its own clear quote. To get started, ring 0345 464 0079 or email us.
Related advice
How the job changes by surface
uPVC windows
Fitters’ mastic on plastic frames is sometimes thin and rushed. We cut it out, back any deep gaps and reseal properly.
Timber windows & doors
Wood swells when it’s wet and shrinks when it dries, so a flexible sealant is essential. We seal onto sound, dry paintwork or timber.
When to call us in Edgware Bury
Sun, frost and rain wear sealant out. Sunlight dries the surface out, and over the years it loses its give, cracks and comes away.
Look out for any of the following:
- Sealant in the wrong colour for the frame
- Cold air getting in at the frame edge
- Gaps left after new windows were fitted
- Old mastic that has gone black or come away
Rented homes near Elstree & Borehamwood station change hands often, and sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
Before booking anyone
- Whether VAT is included
- The length of the guarantee
- How hidden problems are handled
- Which sealant they’ll use, and why
What affects the cost of window mastic
The quote reflects the job in front of us. We take into account:
- The size of the job
- Which sealant suits the joint
- The number of rooms or windows
- Whether old sealant or filler has to be cut out
The cost depends on how much there is to do, how much old material has to come out and access to the work. You’ll have a clear quote before any work starts.
Asking for a quote
When you call or email, it’s useful to know:
- Pictures of the joints, sent by email
- If someone has resealed it before
- If it’s domestic, commercial or a hotel
- What the problem is, such as mould, gaps, leaks or cracking
Want a quote for window mastic? Please ring 0345 464 0079 or email us and tell us about the job. We’ll explain what we’d do and send you a clear quote before we start.
Window mastic in Edgware Bury: local notes
In London conversions and blocks, the lease decides who is responsible for the frames, so it’s worth checking before booking. London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Schools such as Broadfields Primary School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s. Edgware Bury is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
Edgware Bury is about 1 mile north-west of Edgware, in Greater London. For window mastic in and around Edgware Bury, please call 0345 464 0079 or send us an email for a quick quote. We’re based in Crawley and cover Greater London, Edgware Bury included. We cover 764 towns and villages across Greater London, large and small. There’s also a page for London, about 12 miles away.
Every address in HA8 is within our area for window mastic. Other places close to Edgware Bury include Broadfields Estate (1 mile south-east), Deacon's Hill (1 mile north), Elstree (1 mile north-west), Edgware (1 mile south-east) and The Hale (1 mile south-east). Larger places within reach include London (12 miles south-east), City of Westminster (10 miles south-east), Marylebone (10 miles south-east), Kensington (10 miles south), St Pancras (10 miles south-east) and Shoreditch (11 miles south-east).
What’s near Edgware Bury
Typical jobs here are in homes near London Academy and Edgwarebury Park and the streets around them. The closest station to Edgware Bury is Elstree & Borehamwood station, about 1.3 miles north of the centre. Other landmarks nearby include Royal National Orthopaedic Hospital (1 mile west) and Elstree and Borehamwood Museum (1.6 miles north). For a walk, there’s Edgware Way Grassland and Darland's Lake.
What we cannot put right
In fairness, some problems need a different trade:
- Penetrating damp from a failed cavity tray or render
- A door that needs adjusting, rehanging or new seals
- Condensation trapped between the panes
Not sure which it is? You can call 0345 464 0079 or send us an email and we will tell you honestly before booking.
Joints and surfaces we work on
- Patio & French doors
- Composite doors
- uPVC windows
- Aluminium frames
- Window sills
- Timber windows & doors