Greater London · England
North Woolwich Window Mastic
Problem with your window and door frames in North Woolwich? We remove the old material, prepare the joints and seal them properly.
- Damp patches on the reveal after heavy rain
- Untidy mastic left by window fitters
- White mastic on grey or black frames
Aftercare tips
How long the joints last depends on use and care. Here’s what we suggest:
- Keep solvents and bleach off the sealant
- Keep drainage slots and sill grooves clear
- Avoid blasting the frames with a pressure washer
- Check the mastic once a year
A yearly look round the frames is enough. Cracks and lifting edges are easy to spot early, and if anything looks wrong, just phone 0345 464 0079 or email us.
Water gets in quietly when mastic fails. Often the first sign is a damp patch inside or flaking paint on the reveal. Catching it early keeps the fix to a reseal.
About our window mastic in North Woolwich
Some gaps around frames are far deeper than they look. Packing it solid with sealant gives a joint that cannot flex, so we fit backing rod to set the right depth. That way the new bead bonds to the frame and the wall only. We work on aluminium frames, uPVC windows and timber windows & doors, and the jobs we see most are gaps left after new windows were fitted and cold air getting in at the frame edge.
From mansion-block windows to modern glazing in new flats, London has every kind of frame. Over the years, the sealant around them shrinks, cracks and pulls away, which is when draughts and damp patches appear in homes in North Woolwich.
The work is covered for a year after we finish. If anything isn’t right with it, ring 0345 464 0079 or email us.
- Location
- North Woolwich (SE18, E16, E6)
- Region
- Greater London
- Cover
- A year, on every job
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
North Woolwich homes and the weather
Historic houses like Eastbury Manor House (about 2.9 miles north-east) are a reminder that the area around North Woolwich has older buildings as well as new. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. In a converted house or block, who looks after the windows depends on the lease, so check that before you book.
If you let a flat or house near Woolwich Dockyard station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first. If you look after a building such as Oasis Academy Silvertown, its window and door frames need their mastic kept sound, just like a home’s.
North Woolwich is about 1 mile north of Woolwich, in Greater London. Every kind of property in North Woolwich is covered for window mastic, old or new, large or small. The work is guaranteed for a year. We cover 764 towns and villages across Greater London, from the larger towns to small villages. You can also see our page for London, roughly 7 miles from North Woolwich.
Jobs for window mastic in SE18, E16 and E6 works the same way as everywhere else we cover. Whether your property is on Drew Road, Tate Road and Pier Road or anywhere close by, our applicators can take on the job. If you’re just outside North Woolwich, we cover Cyprus (1 mile north), Royal Docks (1 mile north-west), Beckton (1 mile north-east), Silvertown (1 mile west) and Custom House (1 mile west). Larger places within reach include London (7 miles west), City of Westminster (9 miles west), Marylebone (9 miles west), Kensington (11 miles west), St Pancras (8 miles west) and Shoreditch (6 miles west).
Near you in North Woolwich
Locally, jobs take us to homes and businesses close to Beckton District Park, Drew Primary School and The Mitre pub and the streets around them. The nearest railway station is Woolwich Dockyard station, about 0.7 miles south of the centre. Nearby you will also find British Hospital for Mothers and Babies (0.8 miles south-west) and Gallions Reach Shopping Park (1.1 miles north-east). For a walk, there’s Gilbert's Pit.
Quotes for window mastic in North Woolwich
Every job gets its own quote. This is what makes a difference:
- The size of the job
- Which sealant suits the joint
- Access and height
- Any mould that needs treating
Doing several joints on one visit generally makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. You’ll get one clear quote for the whole job.
Helping us quote
Before you ask for a quote, have a think about:
- If it’s domestic, commercial or a hotel
- If someone has resealed it before
- A few photos by email, if you can
- The address or postcode of the job
Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we will explain what’s involved before giving you a price.
Different surfaces, different methods
Timber windows & doors
Older timber windows in stone or brick can suit sand mastic rather than modern sealant. We’ll tell you which suits your home.
Composite doors
Composite doors are normally hung in an uPVC-type frame, so its perimeter joint is sealed much like a window. We match the colour to the frame.
Places near North Woolwich
What else we do in North Woolwich
North Woolwich questions
Is North Woolwich in your area for window mastic?
Yes. We work across London and the South East, and North Woolwich is part of that. Just ring 0345 464 0079 or email us with a few details of the job, and we’ll give you a clear quote.
Do you work for landlords with property near Woolwich Dockyard station?
Yes, we work for letting agents and landlords. You can phone 0345 464 0079 or send us an email with the address and a few details, and we’ll give you a fixed price before we start.
Will you leave a mess?
Tidy work is part of the job. Nearby surfaces are protected, and we clear up when we’re done.
Are you insured?
Yes. We’re fully insured, and we can confirm the details when we quote.
Should I try DIY first?
Some simple jobs can be done by a careful DIYer. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
Can you seal the gap between the frame and the plaster indoors?
Yes. Draughts often come through the inside gap too, so sealing both is often worthwhile.
Can you seal over the old sealant?
No. New silicone won’t bond to old silicone, and it traps any mould or water underneath. It all has to come out first.
How many windows can you do in a day?
The work takes a morning for a couple of windows and a door. Access and how stubborn the old mastic is affect the time most.
Do you need window mastic in North Woolwich?
Some failures date back to when the windows were fitted. Mastic laid onto dusty, damp or crumbling surfaces didn’t grip properly, and it lets go sooner than it should.
These are the problems we’re asked about most:
- White mastic on grey or black frames
- Hard, cracked sealant around windows
- Old mastic that has gone black or come away
- Rushed sealant from a window installation
If you live in an older home near St John's Church, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
What your quote should include
- When the joint can take water or movement
- What happens if the job turns out different
- Are they insured?
- Which sealant they’ll use, and why
Honest limits
We’d rather tell you now than do work that will not last, so these are the limits:
- Damp coming through the wall itself rather than the frame joint
- Draughts through the window seals rather than the frame
- Soft or decayed wood in the frame
If you are not sure, just call 0345 464 0079 or drop us an email and we will give you a straight answer.
Where we work in North Woolwich
- Window sills
- Composite doors
- Timber windows & doors
- Aluminium frames
- uPVC windows
- Patio & French doors
DIY versus a professional finish
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
How the visit works
You do not need to clear the whole room or building, only the area right around the joints. We protect the rest, and the work takes anything from an hour or two to a full day, depending on how many frames there are for a typical job. In North Woolwich, as in most of London, parking needs a little planning. It helps if you can point us to a visitor permit or a bay close to the door.
- Each frame is looked over and we agree which ones need resealing.
- We remove the old mastic and clean the frame edge and wall.
- 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
- Mention any parking rules near the property
- Let us know about stairs, lifts or work at height
- Clear items away from the joints we are working on
Getting a quote
It all starts with a short chat. Describe the problem, the location and the size of the job, and we’ll explain how we’d tackle it. Whenever you’re ready, call 0345 464 0079 or drop us an email.