West Sussex · England
Sand mastic for sash & case windows in Lower Horncroft, West Sussex
Specialist sand mastic for Lower Horncroft: the right sealant, proper preparation and a neat finish. Call for a quick quote.
- Mastic that needs renewing before redecorating
- Cracked mastic round a front door frame
- Gaps where the frame meets the masonry
Signs you need sand mastic in Lower Horncroft
Water gets into small cracks in the mastic and loosens it further. Windows facing the weather tend to go first.
Any of these means the joints need attention:
- Open joints round the window box
- Draughty sash windows at the surround
- Window mastic to renew ahead of painting
- A silicone bead on a sash window that spoils the look
For landlords with property near Pulborough station, any sash windows need sound mastic to keep draughts and rain out.
What your quote should include
- What the cure time is
- What happens if they find a problem under the old sealant
- Which colour the sealant will be
- What insurance they hold
How we handle sand mastic in Lower Horncroft
Sand mastic doesn’t last for ever, leaving gaps round the window. We rake it out and renew it and tidies the surround. If you’re dealing with window mastic to renew ahead of painting and open joints round the window box, we can put it right.
Outdoor sealant needs dry, clean surfaces, so work on frames around Lower Horncroft is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
The work is guaranteed for twelve months. If there’s a problem with our work within the year, let us know and we will sort it.
- Place
- Lower Horncroft (RH20)
- Wider area
- West Sussex
- Cover
- One year on every job
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
FAQs for Lower Horncroft
I let a flat near Pulborough station. Can you help?
Yes, rental work is part of what we do. Just ring 0345 464 0079 or drop us an email and tell us about the property, and we will send you a clear quote.
Is Lower Horncroft in your area for sand mastic?
Yes, Lower Horncroft is within the area we cover. Our work covers London and the South East. Just ring 0345 464 0079 or drop us an email with a few details of the job.
Is consent needed for window work on a listed home?
Checking first is sensible. Ask your local planning authority whether consent is needed for work on a listed home or in a conservation area.
Do you hold any approvals?
Yes. Mr Mastic is an ARBOMaster approved applicator and we are fully insured too.
Will it make a mess?
No. The area is protected while we work and cleaned up afterwards.
Is it possible to paint over sand mastic?
It’s traditionally left unpainted, as guidance on traditional windows advises. Talk to us before any painting near it.
Will the old sealant be removed?
Always. Sealing over old sealant is the main reason resealing fails early, and it’s something we never do.
Can you seal over the old sealant?
No, and we never do. It can look neat for a few weeks, but the new bead soon lifts. The old sealant has to come out completely.
The process
We bring everything the job needs with us, so you don’t need to buy or prepare anything. Once we have agreed what’s being done, we protect the area and start. It normally takes anything from a few hours to a full day, depending on how many windows. Somewhere as small as Lower Horncroft, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- Each surround is checked first.
- The joint is raked out and cleaned.
- Large voids are packed out.
- We point the joint with sand mastic by hand.
- We finish the mastic to a tidy line.
Before we arrive
- Move anything stored near the joints
- Tell us if parking is tricky
- Tell us about any previous sealing or DIY attempts
Ask for a quote
We quote each job on its own, so the first step is telling us about yours. Simply call 0345 464 0079 or email us and describe the job and send photos if you have them.
Advice
What the job involves on each surface
Brick reveals
Brick reveals round timber windows are often pointed with sand mastic. It gives a traditional finish.
Sash and case windows
The mastic round a sash window is on show, so a neat, even finish matters.
Looking after it afterwards
A little care helps the new joints last. We recommend:
- Do not paint over the new mastic
- Keep modern sealant off the mastic
- Keep sills and gutters clear so water drains away
- Ask the planning authority about consent for listed or conservation-area homes
Avoid painting over the new mastic, which is the traditional advice. Ask us before any decorating around it.
Good mastic helps keep the frame dry. Once it fails, water can sit against the timber, which can lead to rot.
DIY versus a professional finish
If you’ve already had a go yourself, that is fine. We cut it out and start again, so tell us about it when you ask for a quote.
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Landlords, agents and businesses in Lower Horncroft
We work for landlords and letting agents as well as homeowners. Sealant work between tenants keeps a property looking cared for before the next move-in.
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
Towns and villages near Lower Horncroft
More services for Lower Horncroft
When it is not the sealant
To be straight with you, some problems need a different trade:
- Decayed frames that need repair
- Putty and glazing repairs
- Masonry that needs repairing
If you are not sure, just call 0345 464 0079 or email us and we’ll give you a straight answer before booking.
What we seal
- Sash and case windows
- Period & listed homes
- Timber door frames
- Tenement windows
- Stone surrounds
- Brick reveals
Sand mastic in Lower Horncroft: local notes
With historic houses such as Bignor Roman Villa (about 2.2 miles south-west) nearby, there’s older building stock in the area around Lower Horncroft as well as newer homes. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic. 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.
In the older streets around Church of St Agatha, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. Managing a site like Fittleworth CofE Village School? Then the mastic around its windows and doors needs looking after like any other building’s.
Lower Horncroft is about 10 miles north of Littlehampton, in West Sussex. If you need sand mastic in Lower Horncroft, please phone 0345 464 0079 or send us an email for a quick quote. We cover West Sussex from our Crawley base, Lower Horncroft included. Across West Sussex, we cover 371 places, and Lower Horncroft is one of them. For nearby work, see our Crawley page (20 miles or so).
Work in RH20 works the same way as everywhere else we cover. Other places close to Lower Horncroft include Coates (1 mile west), Fittleworth (1 mile north), Watersfield (1 mile south), Coldwaltham (1 mile south-east) and Bedham (1 mile north). We also work in nearby towns such as Horsham (13 miles north-east), Worthing (11 miles south-east), Bognor Regis (12 miles south-west), Chichester (12 miles south-west), Littlehampton (10 miles south) and Shoreham-by-Sea (15 miles south-east).
Around Lower Horncroft
Around Lower Horncroft, our work takes us to homes and buildings near The Swan Hotel and Lodge Hill Residential Centre and the streets around them. The nearest railway station is Pulborough station, roughly 2.3 miles east. Nearby you’ll also find Coates Castle (0.9 miles west) and Coultershaw Heritage Site (2.4 miles north-west). The countryside around Lower Horncroft includes Amberley Wildbrooks RSPB Reserve and Bignor Hill.