Greater London · England
Sand Mastic in Dagenham Green
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homes and businesses in Dagenham Green and across Greater London. Fully insured, ARBOMaster approved and guaranteed for a year.
- Weathered mastic on the most exposed windows
- Draughty sash windows at the surround
- Cracked mastic round a front door frame
Keeping the joints in good condition
How long the joints last depends on use and care. We suggest:
- Make sure water runs off the sill
- Avoid patching sand mastic with silicone
- Ask us before painting near the mastic
- Plan mastic work ahead of painting
Leave the new mastic alone while it firms up. It skins over quickly, but takes longer to harden fully.
An open joint round the box lets weather through. Left, the gap tends to get bigger as more mastic falls out.
Sand mastic for homes and businesses in Dagenham Green
Fresh sand mastic forms a skin quite soon but full hardening takes longer. Traditionally, sand mastic is left unpainted, so ask us before you decorate. If you’re dealing with gaps between timber frames and stone or brick and mastic that needs renewing before redecorating, we can help, whatever the surface.
London has a lot of flats and conversions, where windows are often on upper floors. In a converted house or block, the lease usually says who is responsible for the windows, so it’s worth checking before booking.
There’s a 12-month guarantee on every job, whatever its size.
- Location
- Dagenham Green (RM9, RM10, RM13)
- Region
- Greater London
- Cover
- A year, on every job
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Frames and glazing around Dagenham Green
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. With historic houses such as Rainham Hall (about 1.9 miles east) nearby, there’s older building stock in the area around Dagenham Green as well as newer homes. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
If you live in an older home near St Martin's Church, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. As a London address, Dagenham Green can be tricky for parking: let us know about parking bays, permits or a driveway. Letting a property close to Dagenham Dock station? Then older sash windows in a rental need their mastic kept sound to keep the weather out.
Dagenham Green is about 1 mile south-west of Dagenham, in Greater London. Our applicators cover sand mastic for homeowners, landlords and businesses in Dagenham Green. Across Greater London, we cover 764 places, and Dagenham Green is one of them. Our London page covers work nearby.
Postcode districts we cover here for sand mastic: RM9, RM10 and RM13. If you need sand mastic at a property on New Road, Link Road and Ripple Road or anywhere close by, our applicators can take on the job. Other places close to Dagenham Green include 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).
Local landmarks in Dagenham Green
Around Dagenham Green, our work takes us to homes and buildings near Dagenham Park Community School, Cross Keys pub and Parsloes Park, among other places. There’s a railway station in Dagenham Green itself: Dagenham Dock station. Well-known places in the area include Gallions Reach Shopping Park (3.3 miles west) and East End Women's Museum (3.2 miles west). For a walk, there’s Scrattons Eco Park.
Surface by surface
Tenement and terrace windows
Where a building is shared, window work may involve neighbours so it’s worth checking responsibilities.
Sash and case windows
The box of a sash and case window sits in the stone or brick opening. The gap round it is pointed with sand mastic.
Also near Dagenham Green
What else we do in Dagenham Green
What sealant work cannot fix
Sealant isn’t the answer to every problem, and we will tell you before work begins. Sealant won’t put right:
- Putty and glazing repairs
- Decayed frames that need repair
- Damaged stone surrounds
If you are not sure, just call 0345 464 0079 or send us an email and we’ll give you a straight answer.
Joints and surfaces we work on
- Brick reveals
- Timber door frames
- Period & listed homes
- Sash and case windows
- Tenement windows
- Stone surrounds
What we do, step by step
We bring everything the job needs with us, so you don’t need to buy or prepare anything. Once we have agreed what’s being done, we protect the area and start. Most jobs take anything from a few hours to a full day, depending on how many windows. In Dagenham Green, as in most of London, parking needs a little planning. A visitor permit or a nearby bay makes the visit run more smoothly.
- First we agree which joints need doing.
- We remove the old, loose mastic.
- We pack any deep voids first.
- The sand mastic is mixed and pressed into the joint by hand.
- The surface is finished to suit the stone or brick.
Getting ready for the visit
- Tell us about access, such as stairs, a lift or high-level joints
- Keep pets and children clear of the area while we work
- Clear items away from the joints we’re working on
Ask for a quote
We quote each job on its own, so start by telling us what you need. Simply ring 0345 464 0079 or email us and describe the job and send photos if you have them.
Advice
Quotes for sand mastic in Dagenham Green
Call for a quick quote. The main things that affect it are:
- The number of rooms or windows
- Working hours on commercial sites
- The old material and how stubborn it is
- Any mould that needs treating
We don’t show prices on the website, because the cost depends so much on the job itself. Call for a quick quote.
Asking for a quote
To help us quote quickly, please include:
- Whether it’s a home or a business
- Pictures of the joints, sent by email
- The rough size of the job
- Any access issues, like height or stairs
Want a quote for sand mastic? Please ring 0345 464 0079 or drop us an email and tell us about the job. We will explain what we’d do and give you a clear quote before work begins.
Dagenham Green questions
Do you work for landlords with property near Dagenham Dock station?
Yes, we work for letting agents and landlords. Just phone 0345 464 0079 or drop us an email and tell us about the property, and we’ll give you a clear price.
Is parking a problem for a job in Dagenham Green?
London parking needs a little planning, so let us know about permits, bays or a driveway when you book. The visit is then planned around what’s available.
Should I use sand mastic or silicone?
It depends on the window. Period windows in stone or brick generally suit sand mastic, while modern frames normally get a flexible sealant.
Is it OK to seal over old sealant?
No, and we never do. It may look fine at first, but the new layer lifts away from the old one. The old sealant has to come out completely.
Is it messy?
No. We protect the surfaces around the joints, and we tidy up before we go.
Is it worth trying it myself?
That depends on the joint. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
When will the new mastic be hard?
It forms a skin fairly soon, then hardens over a longer period. Timing depends on the weather and the joint.
Where are you based?
We work from Crawley. Our applicators cover Dagenham Green, along with the rest of our area.
Landlord and commercial work in Dagenham Green
Letting agents often deal with us directly. Tell us the address, the job and how access works and we will quote.
For anyone letting property in or around Dagenham Green, jobs at different addresses can be quoted together. Send us the addresses and the work at each, and pictures by email help.
What happens if it’s left?
Not every filler suits an old window surround. Sand mastic is the like-for-like choice, which can matter on listed and conservation-area homes. 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.
Every job is a little different, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all play a part, and we will explain the quote if you ask.
Why book with us
- 12-month guarantee on every job
- 4.9 on Google from 180+ five-star reviews
- Full insurance on every job
- Arbo and Everbuild products
Read our cost guide and our reviews.