Greater London · England
Sand mastic for sash & case windows in Stratford, Greater London
Sand mastic for Stratford and the surrounding area: the right sealant, proper preparation and a neat finish. Call for a quick quote.
- Failed mastic on an exposed elevation
- Silicone on a period window that looks wrong
- Patchy fillers round a sash window
Sand mastic in Stratford
Fresh sand mastic forms a skin quite soon but full hardening takes longer. Traditional guidance is not to paint over it, so ask us before you decorate. If you have cracked mastic round a front door frame and gaps between timber frames and stone or brick, we can put it right, on sash and case windows, timber door frames and brick reveals alike.
Much of London’s older housing was built with timber sash windows, some still in place and some long since replaced. Either way, the mastic between frame and brickwork is what stops draughts and rain getting in, in Stratford as anywhere.
There’s a 12-month guarantee on every job, large or small.
- Location
- Stratford (E15, E20, E3)
- Wider area
- Greater London
- Guarantee
- 12 months on all our work
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
What affects the quote in Stratford
We quote each job individually. This is what makes a difference:
- The number and length of the joints
- How easy the joints are to reach
- When we can work, for business premises
- The number of rooms or windows
Leaving a failed joint normally makes the job bigger, not smaller, as water and mould keep getting in. If you are not sure whether it needs doing, phone 0345 464 0079 or email us and we’ll give you an honest view and a quote.
What we need to know
When you contact us, it’s useful to know:
- The type of property
- Photos by email, if that’s easy
- If someone has resealed it before
- The problem you’ve noticed
There’s no standard price list, because every job is different. Instead, we send you a clear quote for your job. To get started, call 0345 464 0079 or email us.
Looking after it afterwards
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Check the mastic when you check the paintwork
- Make sure water runs off the sill
- Have rotten timber repaired before new mastic goes in
- Go gently near the mastic when preparing windows
Look at the mastic when you look over the windows. Small cracks are easier to deal with early.
Good mastic helps keep the frame dry. Failed mastic lets water reach the timber, which can lead to rot.
Questions from Stratford
I let a flat near Stratford (London) station. Can you help?
Yes. We work for letting agents and landlords as well as homeowners. Just ring 0345 464 0079 or drop us an email with the address and what needs doing, and we’ll give you a clear price.
Is parking an issue for sand mastic in Stratford?
In much of London, parking needs planning: a visitor permit or a nearby bay makes the day run more smoothly.
Do you work in Stratford?
We do. Our applicators work in Stratford.
Can I paint the new mastic?
The usual advice is to leave sand mastic unpainted. If you are redecorating the window, ask us first and we will talk you through it.
Can you do several jobs on one visit?
Of course. Doing several areas at once is usually more efficient.
Can new sealant go over the old?
No. Fresh sealant does not stick to old sealant, and it traps any mould or water underneath. We remove it all first.
Will you leave a mess?
Tidy work is part of the job. Nearby surfaces are protected, and the area is left clean when we finish.
Do I have to be there?
It depends on the job. For work indoors, someone needs to let us in.
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.
Surface by surface
Brick reveals
Gaps between frame and brick let in rain and draughts. New mastic seals the gap.
Stone surrounds
Sand mastic sits naturally against stone. It finishes to look like part of the surround.
What sealant work cannot fix
We will always be straight with you, so here’s what new sealant won’t do:
- Damaged stone surrounds
- Broken panes
- Whether work needs listed building consent
If you are not sure, just call 0345 464 0079 or drop us an email and we’ll give you a straight answer.
What we seal
- Sash and case windows
- Tenement windows
- Timber door frames
- Period & listed homes
- Brick reveals
- Stone surrounds
The process
Before we leave, we go over the finished joints with you and explain the cure time. The visit itself generally takes a few hours per window, depending on the condition of the joints, depending on how much there is to do. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in Stratford. It helps if you can point us to a visitor permit or a bay close to the door.
- We look at the surrounds with you and agree the joints to renew.
- 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
- Try not to wet indoor joints just before the visit
- For business premises, tell us about site rules or sign-in
- Tell us if parking is tricky
How to get a quote
Need a quote? Please ring 0345 464 0079 or drop us an email and tell us about the job. We will explain what we’d do and send you a clear quote before we start.
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Sand mastic in Stratford: local notes
In a converted house or block, who looks after the windows depends on the lease, so it’s worth checking before booking. Historic houses like Sutton House (about 2.1 miles west) are a reminder that the area around Stratford has older buildings as well as new. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
As a London address, Stratford can be tricky for parking: let us know about parking bays, permits or a driveway. If you let a flat or house near Stratford (London) station, any sash windows need sound mastic to keep draughts and rain out. If you live in an older home near Church of St John the Evangelist, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Stratford is about 5 miles north-east of London, in Greater London. Across the E15 area, our applicators can take on sand mastic. Our Greater London coverage runs to 764 places, and Stratford is one of them.
We cover every part of E15, E20 and E3 for sand mastic. That includes homes and businesses on Gay Road, Cam Road and Eve Road and the roads around them. We also cover the places around Stratford: Maryland (1 mile east), East Village (1 mile north-west), Temple Mills (1 mile north-west), West Ham (1 mile south-east) and Hackney Wick (1 mile west). Further out, we also cover London (5 miles south-west), City of Westminster (7 miles west), Marylebone (6 miles west), Kensington (9 miles west), St Pancras (5 miles west) and Shoreditch (3 miles west).
Local landmarks in Stratford
Locally, jobs take us to homes and businesses close to Carpenters Primary School, The Two Puddings pub and Sarah Bonnell School, among other places. There’s a railway station in Stratford itself: Stratford (London) station. Other landmarks nearby include Stratford Centre (under half a mile south-east) and V&A East (0.5 miles west). The countryside around Stratford includes Hollow Pond and Old Ford Island.
Towns and villages near Stratford
Other services in Stratford
Why deal with it now?
Silicone might seem the quicker option, but on period stone or brick it often looks out of place. Sand mastic suits the building and finishes neatly against the masonry. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and by the time it shows on a wall or ceiling in Stratford, the repair is bigger than the sealant job would have been.
Instead of a standard rate, we look at what your job involves: the amount of work, the old material and the access. The price is agreed before we begin.
Why us?
- Any old sealant cut out fully, not covered over
- Anti-fungal silicone where joints get wet
- A 12-month guarantee on all work
- Approved under the ARBOMaster scheme
Take a look at how sealant jobs are priced and our reviews.