Greater London · England
Colliers Wood Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homes and businesses in Colliers Wood and across Greater London. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Silicone on a period window that looks wrong
- Tired mastic found when preparing windows for paint
- Open joints round the window box
Sand mastic in Colliers Wood
Traditional burnt sand mastic that sits naturally against stone and brick. It suits period and listed homes where a modern sealant bead would stand out. If you have open joints round the window box and old sand mastic that has cracked, crumbled or fallen out, we can put it right, on period & listed homes, sash and case windows and timber door frames alike.
London’s Victorian and Edwardian terraces were built with timber sash windows, and many still have them or their replacements. Whatever is in the opening now, the joint between frame and wall is what keeps the weather out, in Colliers Wood as anywhere.
Big or small, it’s backed by our 12-month guarantee.
- Place
- Colliers Wood (SW17, SW19, CR4)
- Region
- Greater London
- Guarantee
- One year on every job
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
What affects the quote in Colliers Wood
Call for a quick quote. What matters most is:
- How many areas need sealing
- The product the joint needs
- Whether old sealant or filler has to be cut out
- The size of the job
The cost reflects the work involved, not a rough estimate. That’s why we ask about the job first and agree the price before starting.
Asking for a quote
To help us quote quickly, please include:
- Photos by email, if that’s easy
- Any access issues, like height or stairs
- Whether it’s a home or a business
- Where the job is, and your postcode
To get a quote, call 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. You’ll have a clear quote before any work starts.
The process
At the end, we look at the finished work together. The work normally 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 Colliers Wood. A visitor permit or a nearby bay makes the visit run more smoothly.
- We check each window surround and the condition of the joint.
- We rake out the old mastic and clean the joint.
- Large voids are packed out.
- New sand mastic is applied and shaped by hand.
- We finish the mastic to a tidy line.
Before we arrive
- Tell us if parking is tricky
- Mention any leaks or damp you’ve noticed
- Clear the area around the work
Ask for a quote
For a quick quote, get us on the phone, or email us if that’s easier. Tell us about the joints that need doing and we will explain what’s involved before giving you a price.
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Places near Colliers Wood
More services for Colliers Wood
When to call us in Colliers Wood
Over the years, sand mastic weathers. It dries out, cracks and loses its grip on the stone or timber.
The most common problems we see are:
- Old cement repairs round a window that have failed
- Window mastic to renew ahead of painting
- Mastic round period door frames that has failed
- Silicone on a period window that looks wrong
Managing a site like Sellincourt Primary School? Then its window and door frames need their mastic kept sound, just like a home’s.
Before you book anyone
- Whether VAT is included
- Who does the work, and how experienced they are
- Which sealant they’ll use, and why
- What the cure time is
What sealant work cannot fix
It helps to know what we cannot do too:
- Decayed frames that need repair
- Masonry that needs repairing
- Decisions on consent for listed homes
If in doubt, call 0345 464 0079 or send us an email and we will say what we think before you book.
What we seal
- Sash and case windows
- Stone surrounds
- Brick reveals
- Timber door frames
- Tenement windows
- Period & listed homes
Landlord and commercial work in Colliers Wood
We work for letting agents and landlords as well as householders. Resealing between tenancies keeps a property looking cared for.
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Resealing at the right time is simple maintenance that we can handle for you.
Common questions in Colliers Wood
I let a flat near Tooting station. Can you help?
Yes. We work for landlords and agents as well as homeowners, and several properties can be quoted together. Just call 0345 464 0079 or send us an email with the address and what needs doing, and we’ll send you a clear quote.
Can you do sand mastic in Colliers Wood?
Yes, Colliers Wood is within the area we cover. Our work covers London and the South East. Just phone 0345 464 0079 or email us with a few details of the job, and we will give you a clear price.
Is it messy?
Very little: the area around the joints is protected first, and we tidy up before we go.
Can I add another job to the visit?
Yes. Just list everything you need and we’ll quote it together.
What information do you need?
Only a few details: where it is, what you’ve noticed and how we reach it. After that, simply ring 0345 464 0079 or drop us an email.
Can I do it myself?
That depends on the joint. High-level, external movement and fire-rated joints are professional jobs, while a short indoor joint may be within reach.
Which products do you use?
Products from Arbo and Everbuild, among others, picked for each joint. We explain the product when we quote.
Do the sealants smell?
Some sealants have a smell while they cure. Opening a window helps.
Surface by surface
Tenement and terrace windows
Windows above ground floor need the right access. Tell us the height and we will confirm what’s needed.
Stone surrounds
The stone is treated with care while raking out the old mastic.
Windows and doors in Colliers Wood
With historic houses such as Southside House (about 2.8 miles west) nearby, there’s older building stock in the area around Colliers Wood as well as newer homes. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic. In a converted house or block, who looks after the windows depends on the lease, so it’s worth checking before booking.
If you live in an older home near St Nicholas, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. Letting a property close to Tooting station? Then any sash windows need sound mastic to keep draughts and rain out.
Colliers Wood is about 5 miles south of Brompton, in Greater London. Anywhere in SW17, we cover sand mastic for homes and businesses. Across Greater London, we cover 764 places, Colliers Wood among them. There’s also a page for London, roughly 6 miles from Colliers Wood.
Postcode districts we cover here for sand mastic: SW17, SW19 and CR4. Streets in the area include Acre Road, Boyd Road and Park Road, all of which we cover. Close by, we work in Tooting (1 mile north), Tooting Bec (1 mile north), Merton Abbey (1 mile south-west), Furzedown (1 mile north-east) and Eastfields (1 mile south-east). Within a short drive, we also cover London (6 miles north-east), City of Westminster (7 miles north), Marylebone (7 miles north), Kensington (6 miles north), St Pancras (8 miles north) and Shoreditch (8 miles north-east).
Landmarks near Colliers Wood
In Colliers Wood, that means homes and buildings near Figge's Marsh, Ensham School and The Royal Standard pub. There’s a railway station in Colliers Wood itself: Tooting station. Well-known places in the area include Grove Hospital (0.6 miles north) and Wandle Industrial Museum (1.2 miles south). Not far away are Henman Hill and Myrna Close.
Why deal with it now?
Gaps round a sash window let in rain and draughts. Water can get to the frame and the masonry so renewing it early protects the window. Damp from a failed joint spreads quietly in older London brickwork and timber, and by the time it shows on a wall or ceiling in Colliers Wood, the repair is bigger than the sealant job would have been.
We do not show prices on the website, because the cost depends so much on the job itself. Call for a quick quote and we will talk you through it.
Why us?
- Old sealant always removed completely
- Trusted Arbo and Everbuild sealants
- 12-month guarantee on every job
- Domestic, commercial and hotel work