West Sussex · England
Sullington Sand Mastic
Sand mastic in Sullington from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Mastic round period door frames that has failed
- Silicone on a period window that looks wrong
- Crumbling sand mastic round a window
Surface by surface
Tenement and terrace windows
Windows above ground floor need the right access. Let us know the floor and we’ll confirm access.
Period and listed homes
On a listed home or in a conservation area, the right material matters. Like-for-like sand mastic is normally favoured.
Sand mastic in Sullington
Burnt sand mastic is a traditional material that sits naturally against stone and brick. It’s a good fit for period properties, where modern sealant can look out of place. Typical jobs include weathered mastic on the most exposed windows and gaps between timber frames and stone or brick, across brick reveals, sash and case windows and period & listed homes.
Mastic can only go onto a dry, clean joint, so window work in Sullington is booked around the forecast. 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.
- Where
- Sullington (RH20)
- Wider area
- West Sussex
- Cover
- One year on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
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 chosen for how the joint moves and where it is, and the work is guaranteed for a year.
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Sand mastic in Sullington: local notes
Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. With historic houses such as Parham House (about 2.5 miles west) nearby, there’s older building stock in the area around Sullington as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
In the older streets around The Parish Church of St Mary, frames set in older brick or stone need a sealant that suits the wall as well as the frame. Letting a property close to Amberley station? Then any sash windows need sound mastic to keep draughts and rain out.
Sullington is about 6 miles north of Worthing, in West Sussex. For sand mastic in and around Sullington, please phone 0345 464 0079 or email us for a quick quote. We’re based in Crawley and cover West Sussex. Across West Sussex, we cover 371 places, Sullington among them. We also work in Brighton, about 14 miles from Sullington.
Our applicators cover all of RH20 for sand mastic. Neighbouring places we cover for sand mastic include Storrington (1 mile north-west), Heath Common (1 mile north-east), Washington (1 mile east), Rock (1 mile east) and Cootham (2 miles north-west). Further out, we also cover Horsham (12 miles north-east), Worthing (6 miles south), Bognor Regis (14 miles south-west), Burgess Hill (14 miles east), Littlehampton (8 miles south-west) and Shoreham-by-Sea (9 miles south-east).
Landmarks near Sullington
In Sullington, that means homes and buildings near The Anchor Inn and Rydon Community College, among other places. Sullington’s nearest station is Amberley station, about 4.7 miles west of the centre. Other landmarks nearby include The Storrington And District Museum (0.7 miles north-west) and Amberley Castle (4.5 miles west). The countryside around Sullington includes Amberley Wildbrooks RSPB Reserve and Chanctonbury Hill.
Honest limits
Sealant is not the answer to every problem, and we’d rather say so up front. It will not solve:
- Timber that has rotted
- Putty and glazing repairs
- Sashes that rattle, stick or will not open
If in doubt, ring 0345 464 0079 or drop us an email and we’ll say what we think before you book.
Where we work in Sullington
- Tenement windows
- Period & listed homes
- Stone surrounds
- Sash and case windows
- Timber door frames
- Brick reveals
Nearby places to Sullington
What else we do in Sullington
When to call us in Sullington
Water gets into small cracks in the mastic and pushes it out. Exposed elevations normally fail first.
Keep an eye out for these signs:
- Cement or filler used on old window joints that has cracked
- Weathered mastic on the most exposed windows
- Mastic round period door frames that has failed
- Draughty sash windows at the surround
If you look after a building such as Thakeham Primary School, its window and door frames need their mastic kept sound, just like a home’s.
Comparing quotes
- How long to leave it before use
- What happens if the job turns out different
- Which colour the sealant will be
- The length of the guarantee
What affects the quote in Sullington
Some jobs are bigger than they look, and some smaller. The main factors:
- Any mould that needs treating
- Any working-time requirements on site
- The type of sealant required
- The number of rooms or windows
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed. Call for a quick quote and we’ll go through it with you.
Helping us quote
To make quoting easier, please include:
- Roughly how big the job is
- If someone has resealed it before
- Any access issues, like height or stairs
- A few pictures by email, if you can
To get a quote, phone 0345 464 0079 or send us an email with the location and a short description of the problem. You’ll have a clear quote before any work starts.
How it works
At the end, we look at the finished work together and tell you how long to leave it. The visit itself generally takes a few hours for a single window, longer for several, depending on the amount of work. Somewhere as small as Sullington, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- We start by checking each surround and agreeing the joints to renew.
- Old, loose mastic is raked out and the joint cleaned.
- We pack any deep gaps so the mastic sits at the right depth.
- We mix the sand mastic and apply it by hand, shaping it to the joint.
- We dress the surface so it sits neatly against the masonry.
How to prepare
- Mention any tricky access
- For business premises, tell us about site rules or sign-in
- Mention any leaks or damp you’ve noticed
Ask for a quote
We don’t publish a price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To get started, ring 0345 464 0079 or email us.
Advice
Leave it or put it right?
New mastic over crumbling mastic will not hold. Raking out and preparing the joint gives it a sound base so the new work lasts. Older cottages and farmhouses around Sullington can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
What it costs depends on the size of the job, how much old material has to come out and how easy the joints are to reach. You’ll have a clear quote before any work starts, so you know where you stand.
Why Sullington clients choose us
- Neat joints and a tidy finish
- ARBOMaster approved applicator
- We are fully insured
- Rated 4.9 stars on Google
Read our cost guide or what customers say.
Your questions about sand mastic in Sullington
Do you work for landlords with property near Amberley station?
Yes, we work for letting agents and landlords. Just ring 0345 464 0079 or send us an email and tell us about the property, and we’ll give you a clear quote.
Do you cover smaller places like Sullington?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Are you fully insured?
Yes. Full insurance covers our work.
Can you seal over the old sealant?
No. We remove every bit of old sealant first, so the new joint bonds to clean surfaces.
Will it make a mess?
Not at all. The area is protected while we work and cleaned up afterwards.
Is sand mastic better than silicone for my windows?
For period timber windows in stone or brick, sand mastic is often the better fit. Modern frames normally suit a flexible sealant.
Is the work guaranteed?
Our 12-month guarantee covers every job, sand mastic included.
Where do you work from?
We work from Crawley. We cover Sullington and the rest of West Sussex, along with the rest of our area.