Greater London · England
Sand Mastic in North Cray
Traditional burnt sand mastic around sash and case windows and doors in stone and brick in North Cray, with a one-year guarantee on every job. Ask us for a quote.
- Draughty sash windows at the surround
- Gaps between timber frames and stone or brick
- Patchy fillers round a sash window
What the job involves on each surface
Sash and case windows
The mastic round a sash window is on show, so a neat, even finish matters.
Timber door frames
Round a period front door, sand mastic gives the right look.
Sand mastic in North Cray, done properly
For a listed home or one in a conservation area, ask your local planning authority whether consent is needed for work to windows. Sand mastic is often favoured as a like-for-like material. We work on timber door frames, period & listed homes and stone surrounds, and common reasons people get in touch are crumbling sand mastic round a window and a silicone bead on a sash window that spoils the look.
Many London homes are flats, with windows high above the street. In a converted house or block, the lease normally says who is responsible for the windows, so it’s worth checking before booking.
There’s a 12-month guarantee on every job.
- Location
- North Cray (DA14)
- Wider area
- Greater London
- Cover
- 12 months on all our work
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Landlords, agents and businesses in North Cray
In hotels, rooms out of use cost money, so the work can be planned room by room around your bookings where we can. We’ve worked in hotels as well as homes and businesses.
From a single let to a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a one-year guarantee.
What affects the quote in North Cray
We don’t publish a price list, because jobs vary so much. The quote depends on:
- The amount of work
- Which sealant suits the joint
- Working hours on commercial sites
- The number of rooms or windows
What you pay reflects the work, not a rough estimate. That’s why we ask about the job first and agree the price before starting.
Asking for a quote
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- Where the property is
- Whether it has been sealed before
- What the problem is, such as mould, gaps, leaks or cracking
- Any access issues, like height or stairs
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is.
What sealant work cannot fix
It helps to know what we cannot do too:
- Masonry that needs repairing
- Whether work needs listed building consent
- Sashes that need overhauling
Not sure which it is? You can call 0345 464 0079 or drop us an email and we will tell you honestly.
Surfaces we seal
- Period & listed homes
- Stone surrounds
- Timber door frames
- Brick reveals
- Tenement windows
- Sash and case windows
North Cray: your questions answered
Is parking a problem for a job in North Cray?
It can be, so it helps to tell us about permits, visitor bays or off-street space when you book. The visit is then planned around what’s available.
Do you work for landlords with property near Albany Park station?
Yes, we work for landlords and agents. Just phone 0345 464 0079 or email us and tell us about the property, and we will send you a clear quote.
Should I try DIY first?
Sometimes. Preparation is everything: all the old sealant out, and a clean, dry joint. If it does not work out, we can redo it.
What sealant do you use?
Products from Arbo and Everbuild, among others, chosen to suit the joint. We explain the product when we quote.
How long will you be here?
Most jobs take anything from a few hours to a full day, depending on how many windows, including preparation and clearing up. Your quote will say how long we expect yours to take.
Where are you based?
We work from Crawley. We cover North Cray and the rest of Greater London, along with the rest of our area.
Are you fully insured?
Yes. We’re fully insured for domestic and commercial work.
Do you take out the old sealant first?
Always. Sealing over old sealant is the main reason resealing fails early, so we never do it.
Towns and villages near North Cray
More services for North Cray
Common problems we fix in North Cray
Scraping and sanding before painting can loosen old mastic. Many people find it crumbling when they prepare the windows.
If you can see any of these, it’s time to have the joints looked at:
- Mastic that needs renewing before redecorating
- Gaps round a timber door in stone or brick
- Old sand mastic that has cracked, crumbled or fallen out
- Draughty sash windows at the surround
Schools such as Royal Park Primary Academy are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages.
What to look for in a quote
- Whether they’re fully insured
- What guarantee comes with the work
- How hidden problems are handled
- How the joint is cleaned and prepared
North Cray homes and the weather
In London conversions and blocks, the lease decides who is responsible for the frames, so it’s worth checking before booking. Historic houses like Hall Place and Gardens (about 1.4 miles north-east) are a reminder that the area around North Cray 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.
As a London address, North Cray can be tricky for parking: let us know about parking bays, permits or a driveway. If you live in an older home near Parish Church of St James, the joint between an old wall and a newer frame is generally the first place rain gets in.
North Cray is about 2 miles east of Sidcup, in Greater London. Our applicators cover sand mastic for homeowners, landlords and businesses in North Cray and nearby. Our Greater London coverage runs to 764 places, North Cray among them. We also work in London, around 11 miles away.
Postcode districts we cover here for sand mastic: DA14. Whether your property is on Water Lane, North Cray Road and Leafield Lane or a nearby road, our applicators can take on the job. Other places close to North Cray include Bexley (1 mile north), Coldblow (1 mile north-east), Ruxley (1 mile south), Blendon (1 mile north-west) and Joyden's Wood (1 mile east). Larger places within reach include London (11 miles north-west), City of Westminster (14 miles north-west), Marylebone (14 miles north-west), Kensington (15 miles west), St Pancras (13 miles north-west) and Shoreditch (11 miles north-west).
Around North Cray
In North Cray, that means homes and buildings near Foots Cray Meadows, Cleeve Park School and The White Cross pub, among other places. The nearest railway station is Albany Park station, about 0.6 miles north-west. Nearby you’ll also find Broadway Shopping Centre (1.7 miles north) and Bexley Hospital (1.8 miles north). Not far away are Wansunt Pit and Summer Hill.
What we do, step by step
On the day, we look over the joints with you first. We protect the surfaces around the joints before any work begins. The work normally takes anything from a few hours to a full day, depending on how many windows. For a job in North Cray, 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.
- Each surround is checked first.
- We rake out the old mastic and clean the joint.
- Large voids are packed out.
- We point the joint with sand mastic by hand.
- The finish is dressed neatly.
Before we arrive
- Try not to wet indoor joints just before the visit
- Let us know about stairs, lifts or work at height
- Mention any leaks or damp you’ve noticed
Ask for a quote
For a quick quote, get us on the phone, or send an email if you’d rather. Tell us about the joints that need doing and we’ll talk you through the work.
Read more
Should I try it myself first?
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.