West Sussex · England
Sand mastic for sash & case windows in Fittleworth, West Sussex
Sand mastic for Fittleworth, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Silicone on a period window that looks wrong
- Old sand mastic that has cracked, crumbled or fallen out
- Old cement repairs round a window that have failed
DIY sealant or a professional job?
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions.
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
How we handle sand mastic in Fittleworth
Traditional burnt sand mastic that sits naturally against stone and brick. It suits period and listed homes where a modern sealant bead would stand out. Common call-outs are for cement or filler used on old window joints that has cracked and gaps between timber frames and stone or brick, across stone surrounds, timber door frames and brick reveals.
Homes in small places like Fittleworth often stand in the open, with little to shelter their windows from wind and rain. Exposed frames and sills lose their mastic sooner than sheltered ones.
We stand behind the work with a one-year guarantee, so you’re covered after we’ve gone.
- Place
- Fittleworth (RH20)
- Region
- West Sussex
- Cover
- 12 months on all our work
- Quotes
- A clear price before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
What we are called out for in Fittleworth
Rain on the window surround works into any crack and loosens it further. Windows facing the weather tend to go first.
Most people get in touch when they notice something like this:
- Cement or filler used on old window joints that has cracked
- Silicone on a period window that looks wrong
- Tired mastic found when preparing windows for paint
- Draughty sash windows at the surround
For an older house near a landmark such as The Parish Church of St Mary, the joint between an old wall and a newer frame is usually the first place rain gets in.
Questions to ask before booking
- What preparation is included
- What product goes in the joint
- How the colour is chosen
- How much experience the applicator has
What we do, step by step
Once we’re on site, we check the joints match what you told us. If anything is different, we explain it before carrying on. After that, the work takes anything from a few hours to a full day, depending on how many windows. Somewhere as small as Fittleworth, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We look at the surrounds with you and agree the joints to renew.
- We remove the old, loose mastic.
- Deep gaps are packed so the mastic sits at the right depth.
- The sand mastic is mixed and pressed into the joint by hand.
- The surface is finished to suit the stone or brick.
Before we arrive
- Keep pets and children clear of the area while we work
- Mention any parking rules near the property
- Move anything stored near the joints
Get a quote
If you are in Fittleworth and need sand mastic, call 0345 464 0079 or send us an email. Tell us what the problem is and where, and we will agree the price before any work begins.
Advice
Keeping the joints in good condition
Looking after new joints is easy, and it makes a real difference:
- Clear gutters so water does not pour onto the windows
- Do not run silicone over sand mastic
- Look over the window mastic once a year
- Find out about consent before window work on a listed home
Look at the mastic when you look over the windows. Catching cracks early keeps repairs small.
Once mastic starts to crumble, rain gets in. It can soak into the frame and the surrounding masonry so early renewal protects both.
Work for landlords, hotels and businesses
In hotels, rooms out of use cost money, so we plan the work room by room. We have worked in hotels as well as 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.
Places near Fittleworth
Also in Fittleworth
Why act early in Fittleworth
Not every filler suits an old window surround. Sand mastic is the like-for-like choice and that can be important for listed homes. Around Fittleworth, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, any mould to treat, and whether we need extra access for height. We take all of that into account in your quote.
Why Fittleworth clients choose us
- Any old sealant cut out fully, not covered over
- Rated 4.9 stars on Google
- Tidy, careful work
- Anti-fungal sanitary silicone in wet areas
Fittleworth homes and the weather
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. With historic houses such as Old Place Manor (about 2.1 miles east) nearby, there’s older building stock in the area around Fittleworth 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.
If you look after a building such as Fittleworth CofE Village School, the mastic around its windows and doors needs looking after like any other building’s. Letting a property close to Pulborough station? Then older sash windows in a rental need their mastic kept sound to keep the weather out.
Fittleworth is about 11 miles north of Littlehampton, in West Sussex. We provide sand mastic to homes and businesses in Fittleworth and nearby. Fittleworth is one of 371 places in West Sussex where we work. You can also see our page for Crawley, roughly 19 miles from Fittleworth.
Here we cover the RH20 postcode area for sand mastic. If you need sand mastic at a property on Fairmead Close, School Lane and Greatpin Croft or anywhere close by, we can help. Nearby, we also carry out sand mastic in Bedham (1 mile north), Lower Horncroft (1 mile south), Coates (1 mile south-west), Hardham (2 miles south-east) and Coldwaltham (2 miles south-east). Within a short drive, we also cover Horsham (13 miles north-east), Worthing (12 miles south-east), Bognor Regis (13 miles south-west), Chichester (13 miles south-west), Littlehampton (11 miles south) and Shoreham-by-Sea (15 miles south-east).
Local landmarks in Fittleworth
In Fittleworth, that means homes and buildings near The Swan Hotel, among other places. For rail, the closest station is Pulborough station, about 1.9 miles east. Well-known places in the area include Coates Castle (1.5 miles south-west) and Coultershaw Heritage Site (2.5 miles west). The countryside around Fittleworth includes Bignor Hill and The Mens.
What affects the quote in Fittleworth
You’ll get a clear quote before work begins. It takes into account:
- How many rooms, windows or areas are involved
- Any working-time requirements on site
- Mould in or behind the old joints
- The size of the job
No two jobs are quite the same, so we quote each one individually. Size, access and the product the joint needs all make a difference.
What to tell us for a quote
Photos by email are helpful but not essential. Try to tell us:
- The problem you’ve noticed
- The address or postcode of the job
- If someone has resealed it before
- The type of property
Every job is quoted individually. Just phone 0345 464 0079 or send us an email with the details and send pictures if you have them.
Your questions about sand mastic in Fittleworth
Is Fittleworth within the area you cover?
Yes, we do. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Is Fittleworth in your area for sand mastic?
Yes, Fittleworth is within the area we cover. Our work covers London and the South East. You can phone 0345 464 0079 or send us an email and let us know what needs doing, and we will send you a clear quote.
Which products do you use?
It depends on the joint: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. We use products from Arbo and Everbuild.
Is it worth trying it myself?
Sometimes. Preparation is everything: all the old sealant out, and a clean, dry joint. We can always put it right if it fails.
Where are you based?
Mr Mastic is based in Crawley. Our applicators cover Fittleworth, along with the rest of our area.
Can new sealant go over the old?
No, because it fails. The old sealant always comes out first, so the new sealant bonds properly.
Can tenants book the work?
Of course. Ask your landlord first, and we can send them the quote if that helps.
Can I add another job to the visit?
Yes, we can. Several rooms, windows or areas can go on one quote.