West Sussex · England
Sand mastic for sash & case windows in Fisher, West Sussex
Specialist sand mastic for Fisher: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Weathered mastic on the most exposed windows
- Old sand mastic that has cracked, crumbled or fallen out
- Cement or filler used on old window joints that has cracked
Sand mastic in Fisher
Sand mastic skins over fairly quickly, but it takes longer to harden fully. Traditionally, sand mastic is left unpainted and we’ll advise if you are redecorating. We are often asked to deal with gaps between timber frames and stone or brick and old cement repairs round a window that have failed, across timber door frames, stone surrounds and sash and case windows.
Around Fisher, many homes face open ground, so their windows and doors take the full weather. That exposure dries out and cracks the mastic around frames and sills faster.
Our work is backed for twelve months, in Fisher and everywhere else we cover.
- Where
- Fisher (PO20)
- Region
- West Sussex
- Guarantee
- A year, on every job
- Price
- A clear price before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Do you need sand mastic in Fisher?
Age is the main cause. Even well-laid mastic needs renewing in time and how long it lasts depends on the weather it faces.
Signs it’s time to call us include:
- Mastic dropping out of the joint
- Mastic round period door frames that has failed
- Window mastic to renew ahead of painting
- Open joints round the window box
If you let a flat or house near Chichester station, cracked sand mastic around sash windows lets in the draughts tenants complain about.
Comparing quotes
- Are they insured?
- What happens if they find a problem under the old sealant
- When the joint can take water or movement
- What the quote includes, VAT included or not
Sand mastic in Fisher: local notes
Fisher is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That is hard on the mastic around older windows and doors, especially on the side facing the sea. Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
For an older house near a landmark such as St Leodegar's Church, the joint between an old wall and a newer frame is normally the first place rain gets in. Schools such as Chichester High School For Girls are buildings too, and its window and door frames need their mastic kept sound, just like a home’s.
Fisher is about 3 miles south of Chichester, in West Sussex. Whether you are in the middle of Fisher or further out, sand mastic is available for homes and businesses alike. Across West Sussex, we cover 371 places, Fisher among them. Our Portsmouth page covers work nearby.
Jobs for sand mastic in PO20 is quoted and booked the same way as anywhere else. Nearby, we also carry out sand mastic in South Mundham (1 mile east), Street End (1 mile south-west), Sidlesham Common (1 mile west), Sidlesham (2 miles south-west) and Nyetimber (2 miles south-east). We also work in nearby towns such as Bognor Regis (3 miles east), Chichester (3 miles north), Selsey (5 miles south), Littlehampton (10 miles east), Emsworth (9 miles north-west) and Rustington (11 miles east).
Landmarks near Fisher
For rail, the closest station is Chichester station, roughly 2.5 miles north. Nearby you will also find Chichester Cathedral Treasury (2.7 miles north) and Chichester Castle (3 miles north).
Your questions about sand mastic in Fisher
Do you cover smaller places like Fisher?
Yes. Fisher is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Does the coastal weather in Fisher affect outside sealant?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. Choosing the right sealant for the frame and wall, laid at the right depth, helps it last.
Do you work for hotels and businesses?
Yes. We work in offices, washrooms, hotels and other commercial premises, as well as homes. Working times can be discussed when we quote.
Do you remove the old sealant?
Yes, always, and completely. New silicone doesn’t stick to old silicone, so the joint is cleaned back first.
What exactly is sand mastic?
It’s the traditional filler for the joint round timber windows and doors. It combines sand with a linseed-oil-based binder.
I’m a tenant. Can you help?
We can work for tenants, landlords or agents. Get your landlord’s agreement first.
Do you work for letting agents?
Yes. As well as homeowners, we work for landlords, agents, businesses and hotels across West Sussex.
Does someone need to be in?
We need access to the joints, so we’ll agree that with you when we book. For inside work, that normally means someone being in.
For landlords and businesses
Letting agents often deal with us directly. Tell us the address, the job and how access works and we’ll give you a quote.
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
Keeping the joints in good condition
Joint life depends on how it’s used and looked after. We suggest:
- Ask a joiner to look at soft timber first
- Look over the window mastic once a year
- Leave the new mastic unpainted
- Find out about consent before window work on a listed home
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. It’s easier to renew it before it drops out.
Honest limits
To be straight with you, some problems need a different trade:
- Rotten sashes, sills or window boxes (a joiner’s job)
- Masonry that needs repairing
- Sashes that need overhauling
If in doubt, ring 0345 464 0079 or send us an email and we will say what we think.
Joints and surfaces we work on
- Brick reveals
- Timber door frames
- Stone surrounds
- Tenement windows
- Sash and case windows
- Period & listed homes
What we do, step by step
When we get to you, we compare the joints with what we discussed. If anything is different, we explain it before carrying on. Most jobs then take a few hours per window, depending on the condition of the joints. Somewhere like Fisher needs a little journey planning: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- 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.
- We mix the sand mastic and apply it by hand, shaping it to the joint.
- The finish is dressed so it sits neatly against the stone or brick.
Getting ready for the visit
- Clear items away from the joints we’re working on
- For indoor joints, keep the area dry beforehand if you can
- Mention any parking rules near the property
How to get a quote
There’s no standard price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To arrange one, phone 0345 464 0079 or email us.
Related advice
Why it’s worth doing now in Fisher
New sash windows are a major, costly change, and in listed buildings it may need consent. If the frames are sound, renewing the mastic deals with gaps and draughts at the surround. Older cottages and farmhouses around Fisher can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
A few things move the cost up or down: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether we need extra access for height. We take all of that into account in your quote.
Why Fisher customers choose us
- We’re fully insured
- Approved under the ARBOMaster scheme
- One-year guarantee on every job
- Experience in homes, commercial sites and hotels
Take a look at how sealant jobs are priced and our reviews.
What else we do in Fisher
What affects the cost of sand mastic
Your quote is based on your job. We look at:
- Working hours on commercial sites
- The type of sealant required
- The size of the job
- How easy the joints are to reach
The cost 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 any work starts, so you know where you stand.
What to tell us for a quote
You don’t need to know the technical terms. Just tell us:
- The type of property
- Pictures of the joints, sent by email
- Where the job is, and your postcode
- Roughly how big the job is
To get a quote, phone 0345 464 0079 or drop us an email with the location and a short description of the problem. We will give you a clear quote before any work starts.