Greater London · England
Sand Mastic in Beckton
Professional sand mastic in and around Beckton, with old sealant always removed completely and a one-year guarantee.
- Silicone on a period window that looks wrong
- Mastic dropping out of the joint
- Gaps round a timber door in stone or brick
Common questions in Beckton
Can you help a landlord with a rental near Woolwich station?
Yes, rental work is part of what we do. Just phone 0345 464 0079 or drop us an email and tell us about the property, and we’ll give you a clear quote.
Can you do sand mastic in Beckton?
Yes, Beckton is within the area we cover. Our work covers London and the South East. You can call 0345 464 0079 or send us an email and tell us what needs doing, and we’ll send you a clear quote.
Can I add another job to the visit?
Yes. More than one area can go on one quote.
Can you replace silicone on a period window with sand mastic?
Generally, yes. Once the silicone is out and the joint prepared, sand mastic is applied by hand.
Can you match the sealant colour?
In most cases you can choose. We will tell you which colours the right product comes in and agree one before we start.
Can I paint the new mastic?
Traditional guidance is not to paint over sand mastic. If you’re redecorating the window, ask us first and we will talk you through it.
Will you leave a mess?
No. We work neatly, protect the area around the joints and tidy up afterwards.
What do you need from me for a quote?
Only a few details: where it is, what you’ve noticed and how we reach it. After that, simply phone 0345 464 0079 or email us.
How we handle sand mastic in Beckton
For a listed home or one in a conservation area, ask your local planning authority if consent is needed before window work. Like-for-like sand mastic is often the preferred finish. We work on timber door frames, stone surrounds and period & listed homes, and the jobs we see most are gaps round a timber door in stone or brick and draughts and rain around sash boxes.
London has a lot of flats and conversions, where windows are often on upper floors. Who looks after the outside of the frames can depend on the lease, so check that first.
Whatever the size of the job, it’s backed by our one-year guarantee.
- Where
- Beckton (E6, E16)
- Region
- Greater London
- Cover
- One year on every job
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Places near Beckton
Other services in Beckton
What we do, step by step
Good joint work is mostly preparation, and we do not rush it. Joints are cleaned back and dried before anything new goes in. All told, the work takes a few hours for a single window, longer for several. In a London area like Beckton, the main things to plan are parking and access: tell us about permits, visitor bays or off-street space, which floor we are working on and whether there’s a lift.
- First we agree which joints need doing.
- We remove the old, loose mastic.
- We pack any deep voids first.
- We apply the mastic by hand and shape it.
- We dress the finish so it sits neatly against the masonry.
Preparing for the visit
- Let us know if you’ve seen damp or leaks
- Keep pets and children clear of the area while we work
- Try not to wet indoor joints just before the visit
How to get a quote
To get a quote, call 0345 464 0079 or drop us an email with the location and a short description of the problem. We will give you a clear price before any work starts.
Related advice
Can I do it myself?
A DIY attempt doesn’t rule out a professional job. We remove it and do the joint properly.
Some sealant jobs are within reach of a careful DIYer, 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 we quote for sand mastic
Your quote is based on your job. We take into account:
- Mould in or behind the old joints
- The old material and how stubborn it is
- The number and length of the joints
- How easy the joints are to reach
Commercial jobs are quoted on the same basis as homes: the amount of work, how we reach it and what it needs, along with when we can work on site. Call for a quick quote and we’ll explain what it covers.
What we need to know
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- What the problem is, such as mould, gaps, leaks or cracking
- The rough size of the job
- The type of property
- Photos by email, if that is easy
For sand mastic in Beckton, call 0345 464 0079 or email us. Tell us what the problem is and where, and we’ll agree the price before any work begins.
Landlords, agents and businesses in Beckton
From a single let to a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a one-year guarantee.
We regularly work with letting and managing agents. Tell us the address, the job and how access works and we will quote.
Windows and doors in Beckton
In a converted house or block, who looks after the windows depends on the lease, so check that before you book. Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
In the older streets around St Michael and All Angels Church, frames set in older brick or stone need a sealant that suits the wall as well as the frame. Beckton is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
Beckton is about 1 mile south-east of East Ham, in Greater London. Anywhere in E6, we cover sand mastic for homes and businesses. Our area takes in 764 places across Greater London, large and small. We also work in London, around 7 miles away.
Work in E6 and E16 is quoted and booked the same way as anywhere else. Streets in the area include Trader Road, Eastbury Road and Frobisher Road, all of which we cover. Being close to the A13, Beckton is simple for us to get to. We also cover the places around Beckton: Cyprus (1 mile south-west), North Woolwich (1 mile south-west), East Ham (1 mile north-west), Royal Docks (1 mile south-west) and Wallend (1 mile north). Within a short drive, we also cover London (7 miles west), City of Westminster (9 miles west), Marylebone (9 miles west), Kensington (12 miles west), St Pancras (8 miles west) and Shoreditch (6 miles west).
Local landmarks in Beckton
In Beckton, that means homes and buildings near Kingsford Community School, Oasis Academy Silvertown and Beckton District Park. For rail, the closest station is Woolwich station, about 1.6 miles south. Nearby you’ll also find Gallions Reach Shopping Park (0.6 miles south-east) and Albert Dock Seamen's Hospital (1.3 miles west). The countryside around Beckton includes Gilbert's Pit.
What happens if it’s left?
If you are redecorating, renew the mastic first. Paint over cracked mastic will not stop the gaps and traditional guidance is to leave the new mastic unpainted. 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. Dealing with it early is far simpler.
A few things move the cost up or down: how much old sealant there is and how stubborn it is, any mould to treat, and whether the work is at height. Your quote takes all of that into account.
Why us?
- Anti-fungal silicone where joints get wet
- We are fully insured
- 180+ five-star Google reviews
- Tidy, careful work
See what affects the cost or our reviews.
When to call us in Beckton
Previous repairs in cement or silicone often trap water or crack away. They don’t suit the joint and we normally remove them.
Look out for any of the following:
- Mastic dropping out of the joint
- Draughty sash windows at the surround
- A silicone bead on a sash window that spoils the look
- Tired mastic found when preparing windows for paint
For site and facilities teams at buildings such as Gallions Primary School, the mastic around its windows and doors needs looking after like any other building’s.
What your quote should include
- What insurance they hold
- Which colour the sealant will be
- What guarantee comes with the work
- How much experience the applicator has
Different surfaces, different methods
Tenement and terrace windows
Where a building is shared, window work may involve neighbours, so check who is responsible first.
Brick reveals
Gaps between frame and brick let in rain and draughts. New mastic seals the gap.