Greater London · England
Sand Mastic in Shirley Oaks
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for Shirley Oaks, backed by a 12-month guarantee. Ask us for a quote.
- Open joints round the window box
- Gaps round a timber door in stone or brick
- Mastic worn away on windows facing the weather
DIY versus a professional finish
A DIY attempt does not rule out a professional job. We cut it out and start again, so tell us about it when you ask for a quote.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and doesn’t move well, and the joint depth matters as much as the finish.
Sand mastic for homes and businesses in Shirley Oaks
Fresh sand mastic forms a skin quite soon but full hardening takes longer. Traditionally, sand mastic is left unpainted, so ask us before you decorate. If you have old cement repairs round a window that have failed and wind and rain getting in round a sash window, we can help, whatever the surface.
London homes have every kind of window, from timber sashes in period terraces to aluminium and uPVC in newer blocks. Over the years, the sealant around them shrinks, cracks and pulls away, letting in draughts and water.
You get a 12-month guarantee, the same in Shirley Oaks as everywhere else we work.
- Where
- Shirley Oaks (CR0, SE25, CR9)
- Region
- Greater London
- Guarantee
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Your questions about sand mastic in Shirley Oaks
Can parking be tricky for a visit in Shirley Oaks?
It can be, so it helps to tell us about permits, visitor bays or off-street space when you book. That way the visit can be planned around it.
Do you work for landlords with property near Elmers End station?
Yes, landlords and agents are among the people we work for. Just call 0345 464 0079 or drop us an email with the address and what needs doing, and we will give you a clear price.
What exactly is sand mastic?
Sand mastic is a traditional material for pointing round windows and doors. It’s made with sand and a linseed-oil-based binder.
Do I have to be there?
For indoor joints, yes, someone needs to let us in. Once we’ve agreed the job, you do not need to watch us work.
Will the old sealant be removed?
Yes. We cut out all the old sealant and clean the joint before applying anything new.
Is there any odour?
Some sealants have a smell while they cure. Opening a window helps.
Do you work for hotels and businesses?
Yes. Hotels, offices and other businesses use us, and we are fully insured.
Should I use sand mastic or silicone?
Sand mastic usually suits period timber windows best. On modern frames, we’d normally use a flexible sealant.
Places near Shirley Oaks
Also in Shirley Oaks
The process
On the day, we look over the joints with you first, so there are no surprises. Surfaces next to the work are protected before work begins. Most jobs take a few hours for a single window, longer for several. In Shirley Oaks, as in most of London, parking needs a little planning. A visitor permit or a nearby bay makes the visit run more smoothly.
- We look at the surrounds with you and agree the joints to renew.
- We remove the old, loose mastic.
- We pack any deep voids first.
- The sand mastic is mixed and pressed into the joint by hand.
- We dress the finish so it sits neatly against the masonry.
Before we arrive
- Let us know if you’ve seen damp or leaks
- Try not to wet indoor joints just before the visit
- Mention if the joints have been sealed before
How to get a quote
There’s no standard price list, because every job is different. Instead, your job gets its own clear quote. To arrange one, ring 0345 464 0079 or email us.
Advice
What affects the cost of sand mastic
For a quick quote, just ask. The main things that affect it are:
- Any mould that needs treating
- Access and height
- The number of rooms or windows
- The product the joint needs
Homes and businesses are quoted the same way: the amount of work, the access and the products needed, along with when we can work on site. Call for a quick quote and we will go through it with you.
What we need to know
When you contact us, these details help:
- Roughly how big the job is
- The address or postcode of the job
- The type of property
- A few photos by email, if you can
To get a quote, phone 0345 464 0079 or drop us an email and tell us where the job is and what the problem looks like. You’ll have a clear quote before work begins.
Why deal with it now?
New mastic over crumbling mastic won’t hold. We remove the loose material first so the new work lasts. In London conversions, one flat’s bathroom is often above another flat’s ceiling, and a slow leak from a failed seal can end up in the flat below. Putting it right early is much less trouble.
The cost reflects the work involved, not a rough estimate. That’s why we ask about the job first.
Why choose Mr Mastic in Shirley Oaks
- Fully insured
- Sanitary silicone with an anti-fungal additive in wet areas
- More than 20 years in sealant work
- A 12-month guarantee on all work
Take a look at our cost guide or customer reviews.
What sealant work cannot fix
New sealant can’t fix everything, and we’ll tell you before work begins. Sealant will not put right:
- Decisions on consent for listed homes
- Decayed frames that need repair
- Putty and glazing repairs
If you are not sure, just ring 0345 464 0079 or drop us an email and we’ll give you a straight answer before you book.
Where we work in Shirley Oaks
- Period & listed homes
- Timber door frames
- Tenement windows
- Sash and case windows
- Stone surrounds
- Brick reveals
Signs you need sand mastic in Shirley Oaks
Decorating can disturb tired mastic. It’s often found when windows are being prepared for paint.
These are the problems we are asked about most:
- Weathered mastic on the most exposed windows
- Wind and rain getting in round a sash window
- Window mastic to renew ahead of painting
- Patchy fillers round a sash window
Shirley Oaks is in London, so parking needs planning: let us know about parking bays, permits or a driveway.
Questions to ask before booking
- Whether they seal over old material or remove it
- How long to leave it before use
- Whether they’re fully insured
- Whether the sealant suits the joint
Windows and doors in Shirley Oaks
In a converted house or block, who looks after the windows depends on the lease, so it’s worth checking before booking. London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
In the older streets around Shirley Methodist Church, the joint between an old wall and a newer frame is normally the first place rain gets in. If you let a flat or house near Elmers End station, older sash windows in a rental need their mastic kept sound to keep the weather out.
Shirley Oaks is about 2 miles north-east of Croydon, in Greater London. Every kind of property in Shirley Oaks is covered for sand mastic. The work is guaranteed for a year. Shirley Oaks is one of 764 places in Greater London where we work for sand mastic. For nearby work, see our London page, about 8 miles away.
All of CR0, SE25 and CR9 is covered for sand mastic, from the main roads to the quietest streets. Streets in the area include Poppy Lane, Baring Road and Craven Road, all of which we cover. With the A232 close by, Shirley Oaks is simple for us to get to for sand mastic. Other places close to Shirley Oaks include Shirley (1 mile east), Monks Orchard (1 mile east), Addiscombe (1 mile west), Ashburton (1 mile north-west) and Woodside (1 mile north-west). Within a short drive, we also cover London (8 miles north), City of Westminster (10 miles north-west), Marylebone (10 miles north), Kensington (10 miles north-west), St Pancras (10 miles north) and Shoreditch (10 miles north).
Around Shirley Oaks
In Shirley Oaks, that means homes and buildings near St. John's Church of England Primary School, Ashburton Park and The Cricketers pub and the streets around them. The closest station to Shirley Oaks is Elmers End station, roughly 1.2 miles north. Nearby you’ll also find Crystal Palace Museum (2.8 miles north) and National Psychosis Unit (1.1 miles east). The countryside around Shirley Oaks includes Bramley Bank and Duppas Hill.
How to look after the new joints
A little care helps the new joints last. Our advice:
- Don’t run silicone over sand mastic
- Make sure water runs off the sill
- Go gently near the mastic when preparing windows
- Check the mastic when you check the paintwork
Leave the new mastic alone while it firms up. It skins over quickly but needs longer to fully harden.
Small cracks are a sign the mastic is ageing. Renewing it then is simpler than waiting until it falls out.