Greater London · England
Sand mastic for sash & case windows in Connaught Village, Greater London
We cover Connaught Village for 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 one-year guarantee.
- Failed mastic on an exposed elevation
- Mastic dropping out of the joint
- Open joints round the window box
Common problems we fix in Connaught Village
Timber swells and shrinks with the weather. The movement cracks the mastic over time.
People normally contact us after spotting something like this:
- Tired mastic found when preparing windows for paint
- Silicone on a period window that looks wrong
- Weathered mastic on the most exposed windows
- Crumbling sand mastic round a window
Managing a site like Hampden Gurney CofE Primary School? Then its window and door frames need their mastic kept sound, just like a home’s.
What to look for in a quote
- What insurance they hold
- Who does the work, and how experienced they are
- Whether they seal over old material or remove it
- Which sealant they’ll use, and why
Sand mastic in Connaught Village
Sand mastic is the traditional way to point the gap between a timber window frame and the stone or brick around it. It’s a mix of sand and a linseed-oil-based binder and built up by hand. On older homes, it suits the building far better than silicone. We work on stone surrounds, tenement windows and sash and case windows, and common reasons people get in touch are a silicone bead on a sash window that spoils the look and old cement repairs round a window that have failed.
From mansion-block windows to modern glazing in new flats, London has every kind of frame. The mastic around them dries out and cracks with age, letting in draughts and water.
Your job is guaranteed for a year, as with all our work.
- Place
- Connaught Village (W1U, W1H, W2)
- Wider area
- Greater London
- Cover
- 12 months on all our work
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
When something else is needed
Some problems need a builder, plumber or other trade rather than us:
- Damaged stone surrounds
- Sashes that rattle, stick or will not open
- Cracked or broken glass
If you’re 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
- Period & listed homes
- Sash and case windows
- Stone surrounds
- Timber door frames
- Brick reveals
- Tenement windows
Aftercare tips
Aftercare is simple, and it makes a real difference:
- Check with your local planning authority if your home is listed
- Do not run silicone over sand mastic
- Leave the new mastic unpainted
- Inspect the joints round the windows every year or so
When preparing windows for paint, take care around the mastic. It can be damaged by heavy scraping.
Fine cracks show the mastic is starting to fail. Renewing it then is simpler than waiting until it falls out.
Connaught Village questions
Do you work for landlords with property near London Paddington station?
Yes. We work for landlords and letting agents as well as homeowners. You can phone 0345 464 0079 or drop us an email with the details for a clear quote.
Is Connaught Village in your area for sand mastic?
Yes, Connaught Village is within the area we cover. We work across London and the South East. You can call 0345 464 0079 or send us an email and tell us what needs doing.
What do you need from me for a quote?
Let us know what needs doing and where, plus pictures if you have them. We will ask anything else we need to know.
Will the old sealant be removed?
Yes, every time. New silicone does not stick to old silicone, so the joint is cleaned back first.
Do I have to be there?
For indoor joints, yes, someone needs to let us in. Once we’ve agreed the job, you don’t need to watch us work.
Can I add another job to the visit?
Of course. Combining jobs makes good use of the visit, so mention them when you ask for a quote.
Do I need permission for sand mastic on a listed building?
Your local planning authority is the one to ask. They decide whether consent is needed.
Are you an approved applicator?
Yes. Mr Mastic is an ARBOMaster approved applicator, and we are fully insured.
How the job changes by surface
Tenement and terrace windows
Rows of sash windows on tenements and terraces often need renewing together. We can do one window or several.
Brick reveals
Loose mastic comes out and deep gaps are packed before the new mastic goes in.
Towns and villages near Connaught Village
Also in Connaught Village
Windows and doors in Connaught Village
In London conversions and blocks, the lease decides who is responsible for the frames, so it’s worth checking before booking. With historic houses such as Handel Hendrix House (about 0.9 miles east) nearby, there’s older building stock in the area around Connaught Village as well as newer homes. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic.
Rented homes near London Paddington station change hands often, and any sash windows need sound mastic to keep draughts and rain out. For an older house near a landmark such as Church of St John the Evangelist, the joint between an old wall and a newer frame is generally the first place rain gets in.
Connaught Village is about 1 mile west of City of Westminster, in Greater London. We carry out sand mastic for homeowners, landlords and businesses in Connaught Village and the surrounding area, as part of our work across Greater London. Connaught Village is one of 764 places in Greater London where we work.
All of W1U, W1H and W2 is covered for sand mastic, from the main roads to the quietest streets. If you need sand mastic at a property on Craven Road, Harbet Road and Edgware Road or a nearby road, we can help. Being close to the A40 and A402, Connaught Village is easy for our applicators to reach. Nearby, we also carry out sand mastic in Hyde Park Estate (1 mile west), Tyburn (1 mile south-east), Paddington (1 mile north-west), City of Westminster (1 mile east) and Paddington Green (1 mile north-west). We also work in nearby towns such as London (3 miles east), Shoreditch (4 miles east), Walthamstow (8 miles north-east), Hoxton (4 miles east), Whitechapel (4 miles east) and Hampstead (3 miles north).
Local landmarks in Connaught Village
Around Connaught Village, our work takes us to homes and buildings near Hyde Park, North Westminster Community School and Duke Of Kendal pub, among other places. Also close by are International Community School (within half a mile north-west) and Royal Society of Medicine Library (0.8 miles east). Connaught Village’s nearest station is London Paddington station, roughly 0.5 miles west of the centre. Nearby you will also find Fortius Clinic (0.6 miles east) and Montfichet's Tower (2.8 miles east). The countryside around Connaught Village includes The Long Water and Greville Place nature reserve.
Why it’s worth doing now in Connaught Village
An open joint round the frame lets weather in. Left, water can reach the timber and the wall, so dealing with it now protects both. Converted houses in London often have a bathroom above someone else’s living room, and a slow leak from a failed seal can end up in the flat below. Putting it right early is much less trouble.
What it costs depends on how much there is to do, how hard the old material is to remove and access to the work. We give a clear quote before we start.
Why book with us
- 12-month guarantee on every job
- Tidy, careful work
- Quality sealants from Arbo and Everbuild
- We never seal over old sealant
What affects the cost of sand mastic
There’s no set price list, because jobs vary so much. The quote depends on:
- Which sealant suits the joint
- Whether the work is at height
- The number of rooms or windows
- Mould in or behind the old joints
Rather than a set price list, we look at what your job involves: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
What we need to know
Photos by email are helpful but not essential. Try to tell us:
- Access, such as stairs, a lift or height
- How many joints, rooms or windows are involved
- Whether it’s a home or a business
- The problem you’ve noticed
For sand mastic in Connaught Village, ring 0345 464 0079 or send us an email. Tell us what the problem is and where, and we will agree the price before any work begins.
How it works
The work is kept neat and contained to the joints we’re treating, so you can get on with your day. Expect the work to take a few hours for a single window, longer for several. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in Connaught Village. It helps if you can point us to a visitor permit or a bay close to the door.
- First, we look at the surrounds with you and agree what needs doing.
- Old, loose mastic is raked out and the joint cleaned.
- Large voids are packed out first, so the mastic is not too thick.
- 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 about earlier repairs to the joints
- Keep pets and children clear of the area while we work
- Tell us if parking is tricky
Getting 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. Whenever you’re ready, phone 0345 464 0079 or email us.