Greater London · England
Gipsy Hill Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homes and businesses in Gipsy Hill and across Greater London. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Silicone on a period window that looks wrong
- Tired mastic found when preparing windows for paint
- Draughts and rain around sash boxes
Sand mastic in Gipsy Hill, done properly
We renew sand mastic around sash windows and doors set in stone or brick. Out comes the old, loose mastic, and new mastic is applied and shaped by hand. If you have a silicone bead on a sash window that spoils the look and weathered mastic on the most exposed windows, we can put it right, on period & listed homes, tenement windows and sash and case windows alike.
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.
The work is guaranteed for twelve months. If something isn’t right with it in that time, tell us and we’ll put it right.
- Place
- Gipsy Hill (SE19, SE27, SE21)
- Region
- Greater London
- Guarantee
- A year, on every job
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Keeping the joints in good condition
Aftercare is simple:
- Go gently near the mastic when preparing windows
- Keep sills and gutters clear so water drains away
- Ask the planning authority about consent for listed or conservation-area homes
- Renew mastic before redecorating the windows
Keep gutters and sills clear so water runs away from the surround. Water sitting against the mastic shortens its life.
It’s best to renew mastic before painting the windows. Paint over cracked mastic only covers it up.
Work for landlords, hotels and businesses
For anyone letting property in or around Gipsy Hill, several properties can be quoted together. Send us the addresses and the work at each.
We regularly work with letting and managing agents. Tell us the address, the job and how access works.
How it works
The work is kept neat and contained to the joints we’re treating. The job normally takes anything from a few hours to a full day, depending on how many windows, and we explain the cure time before we leave. For a job in Gipsy Hill, parking and access are the things to plan: tell us about permits, visitor bays or off-street space, which floor we are working on and whether there’s a lift.
- 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.
Getting ready for the visit
- Let us know about parking restrictions
- Tell us about access, such as stairs, a lift or high-level joints
- Try not to wet indoor joints just before the visit
Ask for a quote
It all starts with a short chat. Describe the problem, the location and the size of the job, and we’ll explain how we’d tackle it. Whenever you’re ready, call 0345 464 0079 or drop us an email.
Advice
FAQs for Gipsy Hill
Do you cover Gipsy Hill for sand mastic?
Yes, Gipsy Hill is within the area we cover. We work across London and the South East. You can phone 0345 464 0079 or drop us an email and tell us what needs doing, and we will give you a clear quote.
Is parking an issue for sand mastic in Gipsy Hill?
In much of London, parking needs planning: a visitor permit or a bay close to the door helps a lot.
Do you guarantee sand mastic work?
Our 12-month guarantee applies on every job.
Does someone need to be in?
Access is agreed with you when the job is booked. For inside work, that normally means someone being in.
How do I get a quote for sand mastic in Gipsy Hill?
Size, access and the old material all affect the cost. Call for a quick quote and we’ll talk you through it.
Is there any odour?
Sometimes, a little. Any smell clears as the sealant cures, and ventilation helps.
Do you hold any approvals?
Yes. We hold ARBOMaster approved applicator status, and we are fully insured.
How long will you be here?
A typical job takes a few hours for a single window, longer for several. We will confirm how long when we quote.
Places near Gipsy Hill
More services for Gipsy Hill
Different surfaces, different methods
Timber door frames
A neat sand mastic joint round a front door suits a period home.
Brick reveals
Sand mastic is also used where timber frames meet brick. It gives a traditional finish.
Frames and glazing around Gipsy Hill
With historic houses such as Kingswood House (about 0.5 miles north) nearby, there’s older building stock in the area around Gipsy Hill 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. In a converted house or block, who looks after the windows depends on the lease, so check that before you book.
Letting a property close to Gipsy Hill station? Then cracked sand mastic around sash windows lets in the draughts tenants complain about. Managing a site like Paxton Primary School? Then larger buildings have plenty of frames, and the mastic around each one ages.
Gipsy Hill is about 3 miles south-east of Stockwell, in Greater London. Our applicators cover sand mastic for homes and businesses in Gipsy Hill and nearby. Gipsy Hill is one of 764 towns and villages in Greater London we cover.
Work in SE19, SE27 and SE21 is quoted and booked the same way as anywhere else. If you need sand mastic at a property on Dover Road, Gipsy Road and Berry Lane or anywhere close by, our applicators can take on the job. Neighbouring places we cover for sand mastic include Upper Norwood (1 mile south-west), Norwood New Town (1 mile south-west), West Norwood (1 mile north-west), Crystal Palace (1 mile east) and West Dulwich (1 mile north). We also work in nearby towns such as London (5 miles north), City of Westminster (7 miles north-west), Marylebone (7 miles north), Kensington (7 miles north-west), St Pancras (7 miles north) and Shoreditch (7 miles north).
Around Gipsy Hill
We work in homes and buildings around Gipsy Hill Tavern, Hillcrest and Virgo Fidelis Convent Senior School. Gipsy Hill has its own railway station: Gipsy Hill station. Other landmarks nearby include Whitgift Centre (3.3 miles south) and St Christopher's Hospice (1.2 miles east). Green spaces nearby include Knight's Hill and Dulwich Upper Wood.
Can I do it myself?
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
What we’re called out for in Gipsy Hill
Shallow joints are a common cause. A thin layer does not hold well so we make sure the new mastic is the right thickness.
The most common problems we see are:
- Cracked mastic round a front door frame
- Mastic worn away on windows facing the weather
- Gaps between timber frames and stone or brick
- Mastic that needs renewing before redecorating
For an older house near a landmark such as Christ Church, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Before booking anyone
- Is VAT in the price?
- How the joint is cleaned and prepared
- Whether they seal over old material or remove it
- Who turns up on the day
Leave it or put it right?
New mastic over crumbling mastic will not hold. We remove the loose material first so the new mastic stays put. Converted houses in London often have a bathroom above someone else’s living room, so a small leak from tired sealant can mean a neighbour’s ceiling and a lot of disruption. Dealing with it early is far simpler.
Every job is a little different, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all make a difference, and we will explain the quote if you ask.
Why book with us
- Any old sealant cut out fully, not covered over
- Sanitary silicone with an anti-fungal additive in wet areas
- Fully insured
- 180+ five-star Google reviews