West Sussex · England
Sand mastic for sash & case windows in Patching, West Sussex
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homeowners, landlords and businesses in Patching. Fully insured, ARBOMaster approved and guaranteed for a year.
- Window mastic to renew ahead of painting
- Failed mastic on an exposed elevation
- Draughty sash windows at the surround
For landlords and businesses
Housing providers, facilities teams and property managers book us too in Patching and across West Sussex. We can quote a run of properties together, and we’re fully insured.
We work for landlords and agents as well as homeowners. Resealing between tenancies is a simple way to keep a property in good order.
About our sand mastic in Patching
Sand mastic does not last for ever, leaving gaps round the window. We rake it out and renew it so the surround looks right again. If you are dealing with draughty sash windows at the surround and crumbling sand mastic round a window, we can put it right, on sash and case windows, tenement windows and stone surrounds alike.
Outdoor sealant needs dry, clean surfaces, so work on frames around Patching is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
There’s a 12-month guarantee on every job.
- Place
- Patching (BN13)
- Region
- West Sussex
- Cover
- 12 months on all our work
- Quotes
- A clear price before we start
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
More services for Patching
Common problems we fix in Patching
Most of it is simply age. Sand mastic is a maintenance item like any pointing and how long it lasts depends on the weather it faces.
It’s worth asking for a quote if you see:
- Draughty sash windows at the surround
- Gaps between timber frames and stone or brick
- Gaps round a timber door in stone or brick
- Old cement repairs round a window that have failed
For site and facilities teams at buildings such as Clapham and Patching CofE Primary School, larger buildings have plenty of frames, and the mastic around each one ages.
What your quote should include
- What the quote includes, VAT included or not
- Whether you can choose the colour
- The length of the guarantee
- Who turns up on the day
What happens on the day
Before we leave, we go over the finished joints with you and explain the cure time. The work normally takes a few hours per window, depending on the condition of the joints, depending on the amount of work. Somewhere as small as Patching, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- We start by checking each surround and agreeing the joints to renew.
- The loose and crumbling mastic is raked out and the joint cleaned.
- Deep voids are packed so the mastic is the right thickness.
- The mastic is mixed, pressed into the joint by hand and shaped.
- We dress the surface so it sits neatly against the masonry.
Before we arrive
- On commercial sites, let us know about site rules
- For indoor joints, keep the area dry beforehand if you can
- Mention any leaks or damp you’ve noticed
How to get a quote
Need a quote? Please ring 0345 464 0079 or send us an email with a few details. We will explain what we’d do and send you a clear quote before work begins.
Read more
When something else is needed
A few problems are outside what sealant work can do:
- Sashes that rattle, stick or won’t open
- Broken panes
- Rotten sashes, sills or window boxes (a joiner’s job)
Not sure which it is? You can ring 0345 464 0079 or email us and we’ll tell you honestly.
Where we work in Patching
- Period & listed homes
- Stone surrounds
- Sash and case windows
- Timber door frames
- Brick reveals
- Tenement windows
Looking after it afterwards
Good habits help new joints last longer. A few tips:
- Sort the mastic before the decorators arrive
- Keep modern sealant off the mastic
- Clear gutters so water doesn’t pour onto the windows
- Avoid heavy scraping on the mastic joint
Check the mastic when you check the paintwork. Catching cracks early keeps repairs small.
Gaps round a sash box let in draughts and rain. The longer it’s left, the more the joint opens.
Surface by surface
Sash and case windows
On a sash window, the mastic joint shows on the outside so we finish it carefully.
Timber door frames
Period doors in stone or brick openings are often pointed with sand mastic. We renew it the same way as on windows.
Patching questions
Can you do sand mastic in Patching?
Yes. We work across London and the South East, and Patching is part of that. Just call 0345 464 0079 or send us an email with a few details of the job, and we will send you a clear quote.
Will you come out to Patching?
Yes, Patching is covered. We work across London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Should I check with the council before work on a listed or conservation-area home?
It’s best to ask your local planning authority first. Sand mastic is often favoured as like for like but the decision is theirs.
Is the work guaranteed?
You get our 12-month guarantee on every job.
How long does sand mastic take to go off?
It forms a skin fairly soon and it hardens fully over a longer time. Timing depends on the weather and the joint.
How long does the job take?
Most jobs take a few hours per window, depending on the condition of the joints, including the preparation. Your quote will say how long we expect yours to take.
Which products do you use?
Products from Arbo and Everbuild, among others, picked for each joint. We’ll tell you what we are using and why.
What do you need from me for a quote?
A short description and the location. If we need more, we will ask.
Windows and doors in Patching
Historic houses like Ecclesden Manor (about 1.5 miles south-west) are a reminder that the area around Patching has older buildings as well as new. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
If you let a flat or house near Goring-By-Sea station, cracked sand mastic around sash windows lets in the draughts tenants complain about. Homes close to The Parish Church of St John the Divine include some older properties, and the joint between an old wall and a newer frame is usually the first place rain gets in.
Patching is about 3 miles north-west of Worthing, in West Sussex. Our applicators cover sand mastic for homeowners, landlords and businesses in Patching. We cover 371 towns and villages across West Sussex, from the larger towns to small villages. You can also see our page for Brighton, about 14 miles away.
Here we cover the BN13 postcode area for sand mastic. We cover properties on The Street and Coldharbour Lane. Close by, we work in Clapham (1 mile south-east), Hammerpot (2 miles west), Cote (2 miles east), Angmering (2 miles south-west) and Hangleton (2 miles south). Within a short drive, we also cover Worthing (3 miles south-east), Bognor Regis (11 miles west), Chichester (14 miles west), Littlehampton (4 miles south-west), Shoreham-by-Sea (8 miles east) and Lancing (6 miles east).
What’s near Patching
Typical jobs here are in homes near The Fox pub, The Angmering School and Clapham Wood, among other places. The closest station to Patching is Goring-By-Sea station, about 2.3 miles south-east of the centre. Nearby you will also find Museum of Sussex Folklore (3.1 miles south-east) and Old Castle (3.1 miles south-east). Not far away are WWT Arundel and Highdown Hill.
Why act early in Patching
Gaps round a sash window let in rain and draughts. Left, water can reach the timber and the wall so renewing it early protects the window. Where a wall is exposed, as many are in small places like Patching, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
What it costs depends on how much there is to do, how much old material has to come out and how easy the joints are to reach. You will have a clear quote before any work starts.
Why choose Mr Mastic in Patching
- Every job guaranteed for a year
- 180+ five-star Google reviews
- Homes, businesses and hotels
- Quality sealants from Arbo and Everbuild
Take a look at what affects the cost or our reviews.