West Sussex · England
Sand mastic for sash & case windows in Slindon Common, West Sussex
Problem with your window and door surrounds in Slindon Common? We remove the old material, prepare the joints and seal them properly, with a one-year guarantee.
- Weathered mastic on the most exposed windows
- Draughts and rain around sash boxes
- Gaps where the frame meets the masonry
Sand mastic in Slindon Common
Across Slindon Common, we renew sand mastic around sash and case windows. Each joint is raked out, prepared and pointed by hand, finished to suit the masonry. If you’re dealing with modern sealant on a period surround and patchy fillers round a sash window, we can help, whatever the surface.
Homes in small places like Slindon Common 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.
Each job carries a 12-month guarantee, large or small.
- Place
- Slindon Common (BN18)
- Wider area
- West Sussex
- Cover
- A year, on every job
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Why it’s worth doing now in Slindon Common
Before painting the windows, it pays to renew the mastic. Painting over failed mastic doesn’t seal it and traditional guidance is to leave the new mastic unpainted. In a small place like Slindon Common, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
Combining jobs into one visit is generally more efficient than separate visits, so tell us about everything that needs sealing. You will get one clear quote for the whole job.
What you get with us
- Tidy, careful work
- Full insurance on every job
- Homes, businesses and hotels
- Anti-fungal silicone where joints get wet
See what affects the cost and our reviews.
Nearby places to Slindon Common
Other services in Slindon Common
For landlords and businesses
For anyone letting property in or around Slindon Common, jobs at different addresses can be quoted together. Send us the addresses and the work at each, and pictures by email help.
Failed sealant is one of the commonest items on a check-out report, and it’s quick to put right between tenancies. We can quote for more than one property at once.
What we do, step by step
We bring everything the job needs with us. Once we’ve agreed what’s being done, the area is protected and the work begins. It normally takes a few hours for a single window, longer for several. Somewhere as small as Slindon Common, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- We look at the surrounds with you and agree the joints to renew.
- Old mastic and any loose material are raked out.
- Deep gaps are packed so the mastic sits at the right depth.
- The sand mastic is mixed and pressed into the joint by hand.
- We dress the finish so it sits neatly against the masonry.
Before we arrive
- Let us know about parking restrictions
- Try not to wet indoor joints just before the visit
- Keep pets and children clear of the area while we work
Ask for a quote
Want a quote for sand mastic? 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 quote before we start.
Advice
Sand mastic in Slindon Common: local notes
Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. With historic houses such as Bignor Roman Villa (about 4.6 miles north) nearby, there’s older building stock in the area around Slindon Common as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
Schools such as Slindon CofE Primary School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages. If you live in an older home near The Parish Church of St Mary, the joint between an old wall and a newer frame is generally the first place rain gets in.
Slindon Common is about 5 miles north-west of Littlehampton, in West Sussex. From the centre of Slindon Common to the outskirts, we cover sand mastic for every kind of property. Slindon Common is one of 371 places in West Sussex we cover for sand mastic. For nearby work, see our Portsmouth page, about 20 miles away.
We work across the BN18 postcode area for sand mastic and the streets around it. If you need sand mastic at a property on Sunnybox Lane, Bridle Lane and Shellbridge Road or a nearby road, our applicators can take on the job. We also cover Slindon (1 mile north-west), Avisford (1 mile south-east), Binsted (1 mile south-east), Walberton (1 mile south) and Fontwell (1 mile west). Larger places within reach include Worthing (10 miles east), Bognor Regis (6 miles south-west), Chichester (7 miles west), Selsey (11 miles south-west), Littlehampton (5 miles south-east) and Shoreham-by-Sea (15 miles east).
What’s near Slindon Common
Around Slindon Common, our work takes us to homes and buildings near The Spur Public House and St Philip Howard Catholic High School. For rail, the closest station is Barnham station, about 2.1 miles south. Other landmarks nearby include Arundel Castle (3 miles east) and Arundel and District Hospital (2.5 miles east). For a walk, there’s Bignor Hill and WWT Arundel.
Can I do it myself?
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
Slindon Common questions
Can you do sand mastic in Slindon Common?
Yes, Slindon Common is within the area we cover. Our work covers London and the South East. You can call 0345 464 0079 or email us and tell us what needs doing, and we’ll send you a clear quote.
Do you work for landlords with property near Barnham station?
Yes, landlords and agents are among the people we work for. Just ring 0345 464 0079 or send us an email with the address and what needs doing, and we’ll send you a clear quote.
Can new sealant go over the old?
No, and we never do. It can look neat for a few weeks, but the new layer lifts away from the old one. The old sealant has to come out completely.
Can you work on commercial sites?
Yes, regularly. Larger jobs can be planned room by room or area by area.
Is it worth trying it myself?
Sometimes. The key is preparation: remove all the old material and work on a clean, dry joint. If it doesn’t work out, we can redo it.
What guarantee comes with the work?
Our 12-month guarantee covers every job.
Can old silicone round a sash window be swapped for sand mastic?
In most cases. We remove the silicone and clean the joint, then point it with sand mastic.
Are you insured?
Yes, we’re fully insured for domestic and commercial work.
What we are called out for in Slindon Common
Some old mastic was never deep enough. A thin layer doesn’t hold well so we make sure the new mastic is the right thickness.
These are the problems we are asked about most:
- Mastic worn away on windows facing the weather
- A silicone bead on a sash window that spoils the look
- Mastic round period door frames that has failed
- Mastic dropping out of the joint
Letting a property close to Barnham station? Then older sash windows in a rental need their mastic kept sound to keep the weather out.
Questions to ask before booking
- Whether all the old sealant comes out first
- The length of the guarantee
- Which colour the sealant will be
- What happens if they find a problem under the old sealant
When something else is needed
We’ll always be straight with you, so here’s what sealant can’t fix:
- Decisions on consent for listed homes
- Decayed frames that need repair
- Sashes that need overhauling
If in doubt, phone 0345 464 0079 or drop us an email and we will say what we think before booking.
Surfaces we seal
- Period & listed homes
- Sash and case windows
- Timber door frames
- Stone surrounds
- Brick reveals
- Tenement windows
Keeping the joints in good condition
Once the sealant has cured, a few habits help it last:
- Don’t paint over the new mastic
- Go gently near the mastic when preparing windows
- Sort the mastic before the decorators arrive
- Avoid patching sand mastic with silicone
When preparing windows for paint, take care around the mastic. Hard scraping can loosen it.
Once mastic starts to crumble, rain gets in. It can soak into the frame and the surrounding masonry so early renewal protects both.