Greater London · England
Sand mastic for sash & case windows in Woodcote, Greater London
Our applicators work in Woodcote on traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old material cut out, joints cleaned and sealed neatly and a 12-month guarantee.
- Old sand mastic that has cracked, crumbled or fallen out
- A silicone bead on a sash window that spoils the look
- Mastic that needs renewing before redecorating
Sand mastic in Woodcote
Old sand mastic cracks, crumbles and falls out over time and gaps open up round the frame. We rake it out and renew it so the surround looks right again. If you have cracked mastic round a front door frame and silicone on a period window that looks wrong, we can help, on stone surrounds, brick reveals and sash and case windows alike.
London homes have every kind of window, from timber sashes in period terraces to aluminium and uPVC in newer blocks. The mastic around them dries out and cracks with age, which is when draughts and damp patches appear in homes in Woodcote.
A one-year guarantee comes with the work, just as it does everywhere we cover.
- Place
- Woodcote (CR8, CR5, SM6)
- Region
- Greater London
- Guarantee
- 12 months on all our work
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
When to call us in Woodcote
Timber swells and shrinks with the weather. That movement opens up the mastic joint over time.
Most people get in touch after spotting something like this:
- Cracked mastic round a front door frame
- Wind and rain getting in round a sash window
- Mastic that needs renewing before redecorating
- Modern sealant on a period surround
Letting a property close to Reedham (London) station? Then any sash windows need sound mastic to keep draughts and rain out.
What to look for in a quote
- What preparation is included
- Whether you can choose the colour
- Who turns up on the day
- Which sealant they’ll use, and why
Quotes for sand mastic in Woodcote
The quote reflects the job in front of us. We take into account:
- Whether old sealant or filler has to be cut out
- Which sealant suits the joint
- When we can work, for business premises
- Any mould that needs treating
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. Call for a quick quote and we’ll explain what it covers.
What we need to know
There’s no need for technical detail. Just tell us:
- Whether it’s a home or a business
- The rough size of the job
- Where the property is
- Any previous sealing or DIY work
We do not publish a price list, as no two jobs are quite the same. Instead, we send you a clear quote for your job. To arrange one, ring 0345 464 0079 or email us.
Your questions about sand mastic in Woodcote
I let a flat near Reedham (London) station. Can you help?
Yes, rental work is part of what we do. Just call 0345 464 0079 or drop us an email and tell us about the property, and we will give you a clear quote.
Can parking be tricky for a visit in Woodcote?
Parking in Woodcote, as in most of London, takes a little planning: a visitor permit or a nearby bay makes the day run more smoothly, so mention what’s available when you book.
Are you ARBOMaster approved?
Yes. We are an ARBOMaster approved applicator.
Can you do several jobs on one visit?
Of course. Combining jobs makes good use of the visit.
What sealant do you use?
The product depends on the job: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. We use products from Arbo and Everbuild.
Do I need to be at home?
That depends on where the joints are. Inside work needs someone to give us access, and for outside work we will agree access with you when we book.
What exactly is sand mastic?
It’s sand mixed with a linseed-oil-based binder for the joint between timber frames and masonry.
Is it possible to take out silicone and use sand mastic instead?
Normally, yes. With the silicone removed and the joint cleaned, sand mastic is applied by hand.
What the job involves on each surface
Tenement and terrace windows
In shared buildings, the windows may be part of a wider repair, so check who is responsible first.
Period and listed homes
Many older homes were built with sand mastic round the windows. On listed buildings, check with your planning authority first.
Woodcote homes and the weather
Historic houses like Nonsuch Mansion (about 4.3 miles north-west) are a reminder that the area around Woodcote 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 is traditional sand mastic. The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Managing a site like Woodcote High School? Then its window and door frames need their mastic kept sound, just like a home’s. Homes close to St Swithun's include some older properties, and the joint between an old wall and a newer frame is generally the first place rain gets in.
Woodcote is about 1 mile west of Purley, in Greater London. Whether you’re in the middle of Woodcote or further out, sand mastic is available for homes and businesses alike, from flats and houses to offices and hotels. Woodcote is one of 764 towns and villages in Greater London we cover. Our London page covers work nearby, about 12 miles away.
Here we cover the CR8, CR5 and SM6 postcode area for sand mastic. That includes homes and businesses on Elton Road, Birch Lane and Newton Road and the roads around them. Other places close to Woodcote include Woodcote Green (1 mile north-west), Peaks Hill (1 mile north-east), Purley (1 mile east), Little Woodcote (1 mile west) and Coulsdon (1 mile south). We also work in nearby towns such as London (12 miles north), City of Westminster (12 miles north), Marylebone (13 miles north), Kensington (12 miles north), St Pancras (13 miles north) and Shoreditch (13 miles north).
Around Woodcote
In Woodcote, that means homes and buildings near The Foxley Hatch pub, Laleham Lea School and Woodcote Primary School and the streets around them. The closest station to Woodcote is Reedham (London) station, about 0.7 miles east of the centre. A little further out are Croydon Airport Visitor Centre (1.7 miles north-east) and St George's Walk (3.2 miles north-east). The countryside around Woodcote includes Foxley Wood and Duppas Hill.
What we cannot put right
Some problems need a builder, plumber or other trade rather than us:
- Crumbling stone or brickwork round the window
- Planning or listed building consent (your local planning authority decides)
- Rotten sashes, sills or window boxes (a joiner’s job)
If you are not sure, just call 0345 464 0079 or send us an email and we’ll give you a straight answer before booking.
What we seal
- Tenement windows
- Period & listed homes
- Timber door frames
- Sash and case windows
- Stone surrounds
- Brick reveals
DIY versus a professional finish
If you do try it yourself, take your time over the 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.
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and doesn’t move well, and the joint depth matters as much as the finish.
Landlord and commercial work in Woodcote
From a single let to a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
We work for landlords and agents as well as homeowners. Sealant work between tenants is a simple way to keep a property in good order.
What we do, step by step
Good joint work is mostly preparation, and we don’t rush it. Every joint is cleaned and dried before new material goes in. In total, it usually takes a few hours per window, depending on the condition of the joints. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in Woodcote. A visitor permit or a nearby bay makes the visit run more smoothly.
- We check the window surrounds and agree which joints need renewing.
- Old, loose mastic is raked out and the joint cleaned.
- Deep voids are packed so the mastic is the right thickness.
- The mastic is mixed, pressed into the joint by hand and shaped.
- We dress the surface so it sits neatly against the masonry.
Getting ready for the visit
- Let us know if you’ve seen damp or leaks
- Mention any tricky access
- On commercial sites, let us know about site rules
How to get a quote
It all starts with a short chat. Describe the problem, the location and the size of the job, and we’ll talk you through what we’d do. When it suits you, phone 0345 464 0079 or email us.