West Sussex · England
Sand mastic for sash & case windows in Findon Valley, West Sussex
We cover Findon Valley for traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old sealant removed completely, joints prepared properly and a one-year guarantee.
- Patchy fillers round a sash window
- Gaps where the frame meets the masonry
- Wind and rain getting in round a sash window
About our sand mastic in Findon Valley
Traditional burnt sand mastic blends with stone and brick surrounds. It suits period and listed homes where a modern sealant bead would stand out. We’re often asked to deal with old cement repairs round a window that have failed and cracked mastic round a front door frame, across tenement windows, sash and case windows and stone surrounds.
Houses in smaller places like Findon Valley can stand more in the open than those in a built-up town. That’s hard on the mastic around frames and sills.
A 12-month guarantee comes with the work, just as it does everywhere we cover.
- Location
- Findon Valley (BN14, BN13)
- Region
- West Sussex
- Guarantee
- A year, on every job
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
DIY versus a professional finish
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
Why act early in Findon Valley
Not every draught comes from the sashes themselves. Open mastic joints round the box can let air in and new mastic seals them. In a smaller place like Findon Valley, wherever a wall is exposed, a failed outside joint is a real source of damp. Inside, a split seal lets water into floors and panels just as it would anywhere.
Doing several joints on one visit is normally more efficient than separate visits, so it’s worth mentioning everything you’d like done. You will get one clear quote for the whole job.
What you get with us
- We’re fully insured
- Neat joints and a tidy finish
- 180+ five-star Google reviews
- Anti-fungal sanitary silicone in wet areas
See our cost guide and what customers say.
Honest limits
We will always be straight with you, so here’s what new sealant won’t do:
- Whether work needs listed building consent
- Broken panes
- Sashes that rattle, stick or won’t open
If you’re not sure, just phone 0345 464 0079 or email us and we’ll give you a straight answer before booking.
Joints and surfaces we work on
- Stone surrounds
- Sash and case windows
- Tenement windows
- Brick reveals
- Timber door frames
- Period & listed homes
Nearby places to Findon Valley
Also in Findon Valley
Quotes for sand mastic in Findon Valley
We don’t publish a price list, because no two jobs are the same. What we look at:
- Any mould that needs treating
- The type of sealant required
- Access and height
- How many rooms, windows or areas are involved
Rather than a set price list, we look at what your job involves: how many joints, what’s in them now and how we reach them. You will know the price before we begin.
What we need to know
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- What the problem is, such as mould, gaps, leaks or cracking
- Where the job is, and your postcode
- The rough size of the job
- Whether it has been sealed before
Asking for a quote is easy: let us know the job and the location. A few pictures by email make the job easier to understand, and we will take it from there.
What we’re called out for in Findon Valley
Paint, silicone or cement used over old mastic causes problems. They don’t move with the timber and we normally remove them.
Signs it’s time to call us include:
- Gaps round a timber door in stone or brick
- Gaps between timber frames and stone or brick
- A silicone bead on a sash window that spoils the look
- Window mastic to renew ahead of painting
Managing a site like Vale School? Then larger buildings have plenty of frames, and the mastic around each one ages.
Before booking anyone
- What happens if the job turns out different
- Whether they’re fully insured
- Which sealant they’ll use, and why
- Who turns up on the day
How it works
Our applicators work methodically: protect, prepare, seal, tidy. For most jobs that takes a few hours for a single window, longer for several and we leave things clean and tidy. Parking around Findon Valley is normally easier than in a town centre, but mention any lanes, gates or long drives. For outside work, side access and the height of the joints help us plan.
- We check each window surround and the condition of the joint.
- The joint is raked out and cleaned.
- Large voids are packed out.
- New sand mastic is applied and shaped by hand.
- We finish the mastic to a tidy line.
Preparing for the visit
- Mention any leaks or damp you’ve noticed
- Let us know about parking restrictions
- Mention if the joints have been sealed before
How to get a quote
Need a quote? Please call 0345 464 0079 or drop us an email with a few details. We’ll explain what we’d do and give you a clear price before any work starts.
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Common questions in Findon Valley
Is Findon Valley in your area for sand mastic?
Yes. Our work covers London and the South East, and Findon Valley is part of that. You can ring 0345 464 0079 or drop us an email and let us know what needs doing.
I let a flat near West Worthing station. Can you help?
Yes, rental work is part of what we do. You can phone 0345 464 0079 or drop us an email with the address and a few details, and we’ll give you a fixed price before we start.
What does sand mastic cost?
We do not publish prices, because the cost depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
What sealant do you use?
We choose the sealant for the joint, not the other way round. Movement, water and weather all affect the choice, and we will explain our choice.
What do you need from me for a quote?
Only a few details: where it is, what you’ve noticed and how we reach it. After that, simply call 0345 464 0079 or drop us an email.
Do you offer different sealant colours?
In most cases you can choose. We’ll tell you which colours the right product comes in and agree one before we start.
What guarantee comes with the work?
Every job comes with our 12-month guarantee.
Can you do several jobs on one visit?
Yes, we can. Several rooms, windows or areas can go on one quote.
What sand mastic looks like in Findon Valley
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. With historic houses such as Ecclesden Manor (about 3.5 miles south-west) nearby, there’s older building stock in the area around Findon Valley as well as newer homes. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
For an older house near a landmark such as All Saints, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. If you let a flat or house near West Worthing station, cracked sand mastic around sash windows lets in the draughts tenants complain about.
Findon Valley is about 2 miles north of Worthing, in West Sussex. For sand mastic in and around Findon Valley, it’s easy to get a quote: please phone 0345 464 0079 or send us an email. We are based in Crawley and cover West Sussex, Findon Valley included. We cover 371 towns and villages across West Sussex. You can also see our page for Brighton, roughly 12 miles from Findon Valley.
Work in BN14 and BN13 works the same way as everywhere else we cover. Sand mastic is available to properties on Mill Lane, Furze Road and Gorse Lane and the roads around them. If you are just outside Findon Valley, we cover Salvington (1 mile south), Offington (1 mile south), Worthing (2 miles south), Broadwater (2 miles south-east) and Sompting (3 miles south-east). Larger places within reach include Horsham (15 miles north), Bognor Regis (13 miles west), Burgess Hill (14 miles north-east), Littlehampton (6 miles south-west), Shoreham-by-Sea (6 miles east) and Lancing (4 miles south-east).
Landmarks near Findon Valley
Locally, jobs take us to homes and businesses close to Durrington High School. Findon Valley’s nearest station is West Worthing station, roughly 2.4 miles south. Other landmarks nearby include Worthing Hospital (2.9 miles south-east) and Old Castle (1.9 miles south). Not far away are Widewater Lagoon and Steep Down.
Landlord and commercial work in Findon Valley
Hotels need rooms back in use, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Resealing at the right time is simple maintenance.