West Sussex · England
Sand Mastic in Ashington
We cover Ashington for traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old sealant removed completely, joints prepared properly and every job guaranteed for a year.
- Mastic that needs renewing before redecorating
- Modern sealant on a period surround
- Gaps where the frame meets the masonry
How we quote for sand mastic
Call for a quick quote. What matters most is:
- Mould in or behind the old joints
- How much old sealant there is and how hard it is to remove
- The size of the job
- Working hours on commercial sites
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 play a part, and we will explain the quote if you ask.
Helping us quote
There’s no need for technical detail. It helps if you can tell us:
- The problem you’ve noticed
- Pictures of the joints, sent by email
- Any previous sealing or DIY work
- If it’s domestic, commercial or a hotel
Asking for a quote is easy: let us know what needs doing and where. Photos by email help us understand the job.
Sand mastic in Ashington, done properly
A silicone bead around a sash window can look out of place and isn’t always the right material. Sand mastic gives a finish that matches the age of the house, and we can replace one with the other. If you are dealing with mastic round period door frames that has failed and old sand mastic that has cracked, crumbled or fallen out, we can help.
Outdoor sealant needs dry, clean surfaces, so work on frames around Ashington is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
You get a 12-month guarantee, the same in Ashington as everywhere else we work.
- Where
- Ashington (RH20)
- Wider area
- West Sussex
- Cover
- A year, on every job
- Quotes
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
FAQs for Ashington
Is sand mastic in Ashington guaranteed?
All our work, in Ashington and everywhere else, comes with a 12-month guarantee. We’re also fully insured and ARBOMaster approved.
Do you cover Ashington for sand mastic?
Yes, Ashington is within the area we cover. Our work covers London and the South East. You can phone 0345 464 0079 or drop us an email and let us know what needs doing.
How long does sand mastic take to harden?
Not straight away. The skin forms first, and the full set comes later, and we’ll tell you what to expect.
Where do you work from?
We’re based in Crawley, West Sussex, and we work across South East England, London and Scotland.
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 they decide.
Can you replace silicone on a period window with sand mastic?
Yes, it’s a common request. All the old silicone is removed first so the mastic can sit properly.
Can new sealant go over the old?
No, and we never do. It may look fine at first, but the new bead soon lifts. The old sealant has to come out completely.
What do you need from me for a quote?
Only a few details: the address or postcode, what’s wrong and any access issues. After that, simply call 0345 464 0079 or drop us an email.
Aftercare tips
Looking after new joints is easy, and it makes a real difference:
- Inspect the joints round the windows every year or so
- Ask the planning authority about consent for listed or conservation-area homes
- Renew mastic before redecorating the windows
- Take care around the mastic when scraping paint
Keep paint scrapers and sanders off the mastic when redecorating. It can be damaged by heavy scraping.
Fine cracks show the mastic is starting to fail. It’s easier to renew it before it drops out.
What we cannot put right
Some problems need a builder, plumber or other trade rather than us:
- Damaged stone surrounds
- Putty and glazing repairs
- Whether work needs listed building consent
If in doubt, ring 0345 464 0079 or send us an email and we’ll say what we think before booking.
Joints and surfaces we work on
- Period & listed homes
- Tenement windows
- Sash and case windows
- Stone surrounds
- Timber door frames
- Brick reveals
What we’re called out for in Ashington
Water gets into small cracks in the mastic and pushes it out. Exposed elevations normally fail first.
Any of these means the joints need attention:
- Cement or filler used on old window joints that has cracked
- Draughts and rain around sash boxes
- Gaps between timber frames and stone or brick
- A silicone bead on a sash window that spoils the look
If you live in an older home near Ashington Methodist Church, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Comparing quotes
- How the colour is chosen
- Whether all the old sealant comes out first
- What insurance they hold
- What guarantee comes with the work
What else we do in Ashington
Ashington homes and the weather
With historic houses such as Parham House (about 4.5 miles west) nearby, there’s older building stock in the area around Ashington as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Managing a site like Ashington CofE Primary School? Then the mastic around its windows and doors needs looking after like any other building’s.
Ashington is about 8 miles north of Worthing, in West Sussex. We carry out sand mastic for homeowners, landlords and businesses in Ashington and the surrounding area. We cover 371 towns and villages across West Sussex. We also work in Brighton, about 13 miles from Ashington.
Our applicators cover all of RH20 for sand mastic. You will find streets such as London Road, The Sands and Hillcrest Drive, and we cover them all. If you are just outside Ashington, we cover Wiston (1 mile south-east), Dial Post (3 miles north-east), Ashurst (3 miles east), Broomer's Corner (3 miles north) and Whitehall (3 miles north). We also work in nearby towns such as Crawley (15 miles north-east), Horsham (10 miles north), Worthing (8 miles south), Haywards Heath (14 miles east), Burgess Hill (12 miles east) and Littlehampton (10 miles south-west).
What’s near Ashington
We work in homes and buildings around Rydon Community College and the streets around them. Other landmarks nearby include The Storrington And District Museum (2.6 miles south-west). Green spaces nearby include Chanctonbury Hill and Knepp Wildland.
Different surfaces, different methods
Tenement and terrace windows
Where a building is shared, window work may involve neighbours so it’s worth checking responsibilities.
Timber door frames
A neat sand mastic joint round a front door suits a period home.
What happens if it’s left?
An open joint round the frame lets weather in. Water can get to the frame and the masonry so renewing it early protects the window. Around Ashington, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
What it costs depends on the size of the job, how much old material has to come out and how easy the joints are to reach. We give a clear quote before work begins.
Why choose Mr Mastic in Ashington
- Any old sealant cut out fully, not covered over
- Fully insured
- We leave the area clean and tidy
- ARBOMaster approved applicator
Take a look at how sealant jobs are priced or our reviews.
What happens on the day
We work through the job in order: protect, prepare, seal, tidy. Typically it takes a few hours for a single window, longer for several. Somewhere like Ashington needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- First we agree which joints need doing.
- Old mastic and any loose material are raked out.
- Deep gaps are packed so the mastic sits at the right depth.
- We apply the mastic by hand and shape it.
- We dress the finish so it sits neatly against the masonry.
Preparing for the visit
- Keep pets and children clear of the area while we work
- Try not to wet indoor joints just before the visit
- Tell us about access, such as stairs, a lift or high-level joints
Getting a quote
For sand mastic in Ashington, phone 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and you will get a clear quote before we start.