Greater London · England
Sand mastic for sash & case windows in West Ham, Greater London
Specialist sand mastic for West Ham: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Tired mastic found when preparing windows for paint
- Mastic dropping out of the joint
- Patchy fillers round a sash window
Landlord and commercial work in West Ham
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance.
Sand mastic in West Ham, done properly
Sand mastic does not last for ever, leaving gaps round the window. Renewing it closes the gap so the surround looks right again. Common call-outs are for cement or filler used on old window joints that has cracked and cracked mastic round a front door frame, on sash and case windows, brick reveals and timber door frames.
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, in West Ham as anywhere.
All of our work is guaranteed for twelve months, and the guarantee is the same wherever you are.
- Place
- West Ham (E15, E13, E7)
- Wider area
- Greater London
- Guarantee
- One year on every job
- Quote
- A clear price before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
What else we do in West Ham
Keeping the joints in good condition
After the cure time, these simple habits help:
- Keep modern sealant off the mastic
- Ask a joiner to look at soft timber first
- Take care around the mastic when scraping paint
- Check the mastic when you check the paintwork
Avoid sealing over the mastic with silicone. If you see a crack, ask us to take a look rather than patching it.
Crumbling mastic lets rain into the joint. That water can reach the timber frame and the wall so early renewal protects both.
West Ham homes and the weather
In a converted house or block, who looks after the windows depends on the lease, so it’s worth checking before booking. 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.
For landlords with property near West Ham station, older sash windows in a rental need their mastic kept sound to keep the weather out. West Ham is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
West Ham is about 2 miles west of East Ham, in Greater London. Every kind of property in West Ham is covered for sand mastic. Every job comes with our one-year guarantee. Our Greater London coverage runs to 764 places, and West Ham is one of them.
Postcode districts we cover here for sand mastic: E15, E13 and E7. Whether your property is on Plaistow Grove, Willis Road and Moorey Close or anywhere close by, our applicators can take on the job. If you are just outside West Ham, we cover Upton (1 mile north-east), Greengate (1 mile south-east), Maryland (1 mile north-west), Stratford (1 mile north-west) and Plaistow (1 mile south-east). Larger places within reach include London (5 miles south-west), City of Westminster (7 miles west), Marylebone (7 miles west), Kensington (9 miles west), St Pancras (6 miles west) and Shoreditch (4 miles west).
Landmarks near West Ham
In West Ham, that means homes and buildings near West Ham Church School, The Earl Of Derby Public House and St Bonaventure's RC School and the streets around them. The closest station to West Ham is West Ham station, about 0.5 miles south-west of the centre. Nearby you will also find Greenwich Castle (3.9 miles south) and Passmore Edwards Museum (0.6 miles north). Green spaces nearby include Old Ford Island and Tower Hill.
Why deal with it now?
Silicone might seem the quicker option, but it can look wrong on a period surround. Sand mastic is the traditional material and finishes neatly against the masonry. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and once it shows in West Ham, the repair is bigger than a sealant job.
Doing several joints on one visit usually makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. You will get one clear quote for the whole job.
What you get with us
- 4.9 on Google from 180+ five-star reviews
- Arbo and Everbuild products
- A 12-month guarantee on all work
- Domestic, commercial and hotel work
Read our cost guide or what customers say.
Questions from West Ham
Is parking a problem for a job in West Ham?
Parking in West Ham, as in most of London, takes a little planning: a visitor permit or a bay close to the door helps a lot.
Can you help a landlord with a rental near West Ham station?
Yes, rental work is part of what we do. Just ring 0345 464 0079 or email us and tell us about the property, and we’ll send you a clear quote.
What information do you need?
Where the job is, what the problem is and roughly how big it is. If you can, email a few photos.
Is it worth trying it myself?
Sometimes. Preparation is everything: all the old sealant out, and a clean, dry joint. If it does not work out, we can redo it.
Can you work on commercial sites?
Yes. Hotels, offices and other businesses use us.
Is it OK to seal over old sealant?
No. New silicone will not bond to old silicone, and anything trapped underneath, including mould and water, stays there. We remove it all first.
What’s sand mastic made of?
Sand mastic is a traditional material for pointing round windows and doors. It combines sand with a linseed-oil-based binder.
Do you guarantee sand mastic work?
There’s a 12-month guarantee on every job, sand mastic included.
What affects the quote in West Ham
Some jobs are bigger than they look, and some smaller. The main factors:
- Access and height
- The number and length of the joints
- The product the joint needs
- Working hours on commercial sites
Homes and businesses are quoted the same way: the amount of work, the access and the products needed, plus any working-time requirements on site. Ask us for a quote and we will explain what it covers.
What to tell us for a quote
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- How we’d reach the joints
- Pictures of the joints, sent by email
- The problem you’ve noticed
- How many joints, rooms or windows are involved
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we will talk you through what we’d do. When it suits you, ring 0345 464 0079 or send us an email.
Signs you need sand mastic in West Ham
Over the years, sand mastic weathers. It hardens, cracks and starts to come away from the frame or the masonry.
The most common problems we see are:
- Draughts and rain around sash boxes
- Window mastic to renew ahead of painting
- Cement or filler used on old window joints that has cracked
- Mastic dropping out of the joint
Schools such as West Ham Church Primary School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s.
What to look for in a quote
- How hidden problems are handled
- How long to leave it before use
- Whether VAT is included
- Whether the sealant suits the joint
How it works
When we get to you, we check the joints match what you told us. If anything is different, we explain it before carrying on. After that, the work takes a few hours per window, depending on the condition of the joints. For a job in West Ham, parking and access are the things to plan: tell us about permits, visitor bays or off-street space, which floor we’re working on and whether there’s a lift.
- We check each window surround and the condition of the joint.
- The joint is raked out and cleaned.
- We fill deep gaps so the new mastic isn’t too thick.
- New sand mastic is applied and shaped by hand.
- The finish is dressed neatly.
Preparing for the visit
- For business premises, tell us about site rules or sign-in
- Tell us about any previous sealing or DIY attempts
- Tell us if parking is tricky
Ask for a quote
Need a quote? Please call 0345 464 0079 or drop us an email and tell us about the job. You’ll know what we plan to do, and what it will cost, before any work begins.
Related advice
DIY sealant or a professional job?
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
If you are set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it does not work out, we can still put it right.