Greater London · England
Window Mastic in Dagenham Green
Window mastic in Dagenham Green from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Untidy mastic left by window fitters
- Leaking joints at the ends of sills
- Whistling draughts around closed windows
What window mastic looks like in Dagenham Green
Historic houses like Rainham Hall (about 1.9 miles east) are a reminder that the area around Dagenham Green has older buildings as well as new. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic. In a converted house or block, who looks after the windows depends on the lease, so check that before booking.
Homes close to St Martin's Church include some older properties, and frames set in older brick or stone need a sealant that suits the wall as well as the frame. Dagenham Green is in London, so parking needs planning: let us know about parking bays, permits or a driveway.
Dagenham Green is about 1 mile south-west of Dagenham, in Greater London. Jobs in Dagenham Green get the same care as everywhere else we work: old sealant removed completely, careful preparation and a 12-month guarantee. Our Greater London coverage runs to 764 places, and Dagenham Green is one of them. Our London page covers work nearby (11 miles or so).
Every address in RM9, RM10 and RM13 is covered for window mastic. If you need window mastic at a property on New Road, Link Road and Ripple Road or anywhere close by, we can help. Nearby, we also carry out window mastic in Dagenham Dock (1 mile south-west), Beam Park (1 mile east), Hornchurch Marshes (1 mile south-east), Dagenham (1 mile north-east) and Castle Green (1 mile west). Further out, we also cover London (11 miles west), City of Westminster (13 miles west), Marylebone (13 miles west), Kensington (15 miles west), St Pancras (12 miles west) and Shoreditch (10 miles west).
Near you in Dagenham Green
Typical jobs here are in homes near Dagenham Park Community School, Cross Keys pub and Parsloes Park. Dagenham Green has its own railway station: Dagenham Dock station. Other landmarks nearby include Gallions Reach Shopping Park (3.3 miles west) and East End Women's Museum (3.2 miles west). Green spaces nearby include Scrattons Eco Park.
Window mastic in Dagenham Green, done properly
The mastic around a window or door seals the gap between the frame and the wall. Once that seal fails, wind and rain find the gap. Our applicators cut it out and replace it with a flexible, weatherproof sealant. Common call-outs are for mastic that has split away from the wall and black, perished sealant on frames, across patio & French doors, composite doors and timber windows & doors.
London’s Victorian and Edwardian terraces were built with timber sash windows, and many still have them or their replacements. Either way, the mastic between frame and brickwork is what stops draughts and rain getting in.
Whatever the size of the job, you get the same one-year guarantee in Dagenham Green and across Greater London.
- Place
- Dagenham Green (RM9, RM10, RM13)
- Region
- Greater London
- Guarantee
- One year on every job
- Price
- A clear price before work begins
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
How it works
On the day, there’s very little for you to do. Point us to the joints and we’ll get on with it. 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. In Dagenham Green, flats, stairs and shared entrances are part of the routine. 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.
Before we arrive
- Mention any leaks or damp you’ve noticed
- Clear items away from the joints we’re working on
- Keep pets and children clear of the area while we work
How to get a quote
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we will explain how we’d tackle it. Whenever you’re ready, ring 0345 464 0079 or send us an email.
Related advice
Looking after it afterwards
How long the joints last depends on use and care. Here’s what we suggest:
- Use gentle cleaners on frames and sealant
- Look round the frames every year or so
- Ventilate rooms so frames don’t stay wet inside
- Do not paint over the silicone
Most silicone sealants won’t take paint, so mention any painting plans before we start. We can use a paintable sealant where that matters.
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.
Towns and villages near Dagenham Green
Other services in Dagenham Green
DIY sealant or a professional job?
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.
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
Why deal with it now?
Failed mastic is not a reason to replace sound windows. If the frames and glass are in good order, resealing the joints is often all that is needed. If we find failed glass units or worn seals, we will tell you. In London conversions, one flat’s bathroom is often above another flat’s ceiling, so a small leak from tired sealant can mean a neighbour’s ceiling and a lot of disruption. Putting it right early is much less trouble.
Leaving a failed joint generally makes the job bigger, not smaller. If you’re unsure, phone 0345 464 0079 or send us an email for an honest opinion and a quote.
Why us?
- Sanitary silicone with an anti-fungal additive in wet areas
- We agree the colour with you first
- Full insurance on every job
- Experience in homes, commercial sites and hotels
See our cost guide and customer reviews.
When to call us in Dagenham Green
Older frames were often sealed with products that set hard. Once it’s rigid, every bit of frame movement pulls at it, and a gap opens along one edge.
People normally contact us when they notice one of these:
- Cracked sealant at the sill ends
- A bead that does not match the frame
- Black, perished sealant on frames
- Draughty joints inside around the window
Letting a property close to Dagenham Dock station? Then renewing tired window mastic between tenants heads off draught and damp complaints.
Questions to ask before you book
- How long to leave it before use
- What guarantee comes with the work
- How the joint is cleaned and prepared
- Whether they’re fully insured
Landlord and commercial work in Dagenham Green
Landlords and letting agents in Dagenham Green can book us as well as homeowners. Sealant work between tenants is a simple way to keep a property in good order before the next move-in.
We also work for property managers and facilities teams in Dagenham Green and across Greater London. Several sites can go on one quote, and we’re fully insured.
What affects the cost of window mastic
Call for a quick quote. What matters most is:
- The number of rooms or windows
- The type of sealant required
- How much old sealant there is and how hard it is to remove
- Whether the work is at height
Some things make a job bigger or smaller: the old material and how easily it comes out, whether mould needs treating, and whether we need extra access for height. We take all of that into account in your quote.
Asking for a quote
To help us quote quickly, please include:
- Any access issues, like height or stairs
- The type of property
- Whether it has been sealed before
- Where the property is
If you are in Dagenham Green and need window mastic, phone 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and we will agree the price before any work begins.
FAQs for Dagenham Green
Is parking an issue for window mastic in Dagenham Green?
Parking in Dagenham Green, as in most of London, takes a little planning: a visitor permit or a nearby bay makes the day run more smoothly.
Can you do window mastic in Dagenham Green?
Yes. Our work covers London and the South East, and Dagenham Green is part of that. Just phone 0345 464 0079 or drop us an email with a few details of the job.
Are you ARBOMaster approved?
Yes. We’re an ARBOMaster approved applicator, the approved applicator scheme for Arbo sealants.
Can you seal over the old sealant?
No, it will not last. It can look neat for a few weeks, but the new layer lifts away from the old one. The old sealant has to come out completely.
Where do you work from?
Mr Mastic is based in Crawley. We cover Dagenham Green and the rest of Greater London, along with the rest of our area.
I’m a tenant. Can you help?
Yes, though it’s best to check with your landlord first. Landlords are often happy for the work to be arranged.
What should I tell you?
Just the basics: the address or postcode, what’s wrong and any access issues. After that, simply call 0345 464 0079 or send us an email.
How many windows can you do in a day?
Allow most of a day for a typical house, less for a few frames. Access and how stubborn the old mastic is affect the time most.