West Sussex · England
Sand mastic for sash & case windows in Crossbush, West Sussex
Our applicators work in Crossbush on traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old material cut out, joints cleaned and sealed neatly and a one-year guarantee.
- Old cement repairs round a window that have failed
- Gaps where the frame meets the masonry
- Gaps round a timber door in stone or brick
When something else is needed
We’ll always be straight with you, so here’s what sealant cannot fix:
- Crumbling stone or brickwork round the window
- Sash cords, weights and draught-proofing of the sashes
- Broken panes
If you’re not sure, just call 0345 464 0079 or drop us an email and we will give you a straight answer before you book.
Joints and surfaces we work on
- Brick reveals
- Timber door frames
- Sash and case windows
- Stone surrounds
- Period & listed homes
- Tenement windows
How we handle sand mastic in Crossbush
Our applicators renew the sand mastic around sash and case windows and doors in stone and brick. The old mastic is raked out, and new mastic is applied and shaped by hand. We work on sash and case windows, timber door frames and tenement windows, and the jobs we see most are draughty sash windows at the surround and crumbling sand mastic round a window.
Outdoor sealant needs dry, clean surfaces, so work on frames around Crossbush is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
All our work comes with a one-year guarantee.
- Location
- Crossbush (BN18)
- Wider area
- West Sussex
- Guarantee
- 12 months on all our work
- Quotes
- A clear price before work begins
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
How to look after the new joints
No joint lasts for ever, but care makes a real difference. Our tips:
- Renew mastic before redecorating the windows
- Get any rot dealt with first
- Make sure water runs off the sill
- Find out about consent before window work on a listed home
Make sure water drains away from the window surround. Water sitting against the mastic shortens its life.
Gaps round a sash box let in draughts and rain. Left, the gap tends to get bigger.
Places near Crossbush
What else we do in Crossbush
Your questions about sand mastic in Crossbush
Do you cover smaller places like Crossbush?
Yes, we do. We work across London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Do you work for landlords with property near Arundel station?
Yes, we work for landlords and letting agents. 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 any work starts.
Do I need to be at home?
It depends on the job. Inside work needs someone to give us access.
Do you guarantee sand mastic work?
There’s a 12-month guarantee on every job, sand mastic included.
Can you replace silicone on a period window with sand mastic?
Yes, it’s a common request. The old silicone has to come out completely so the mastic beds in well.
How long does sand mastic take to go off?
The surface skins quite quickly and it hardens fully over a longer time. The weather and joint depth both affect it.
Can you quote for more than one area?
Yes, and it often makes sense. Combining jobs makes good use of the visit.
How do I get a quote for sand mastic in Crossbush?
Every job is different, so each one gets its own quote. To get one, ring 0345 464 0079 or send us an email and let us know what needs doing and where.
Signs you need sand mastic in Crossbush
Sand mastic slowly weathers. It dries out, cracks and loses its grip on the stone or timber.
Look out for any of the following:
- Wind and rain getting in round a sash window
- Window mastic to renew ahead of painting
- Cracked mastic round a front door frame
- Modern sealant on a period surround
Schools such as The Littlehampton Academy are buildings too, and the mastic around its windows and doors needs looking after like any other building’s.
What to look for in a quote
- Whether VAT is included
- What guarantee comes with the work
- Who does the work, and how experienced they are
- How the surfaces are prepared before sealing
Crossbush homes and the weather
Crossbush is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. That’s hard on the mastic around older windows and doors, especially on the side facing the sea. With historic houses such as Ecclesden Manor (about 3 miles east) nearby, there’s older building stock in the area around Crossbush 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 landlords with property near Arundel station, any sash windows need sound mastic to keep draughts and rain out. If you live in an older home near The Parish Church of St Mary Magdalen, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Crossbush is about 2 miles north of Littlehampton, in West Sussex. If you need sand mastic in Crossbush, please phone 0345 464 0079 or drop us an email for a quick quote. We cover West Sussex from our Crawley base. Our West Sussex coverage runs to 371 places, Crossbush among them. Our Brighton page covers work nearby.
Work in BN18 works the same way as everywhere else we cover. Neighbouring places we cover for sand mastic include Warningcamp (1 mile north-east), Poling (1 mile south-east), Lyminster (1 mile south-west), Arundel (1 mile north-west) and Toddington (1 mile south). Within a short drive, we also cover Worthing (6 miles east), Bognor Regis (8 miles south-west), Chichester (11 miles west), Selsey (13 miles south-west), Shoreham-by-Sea (12 miles east) and Lancing (9 miles east).
Near you in Crossbush
For rail, the closest station is Arundel station, about 0.5 miles north-west of the centre. Nearby you will also find Lyminster Siege Castle (0.5 miles north) and Rustington Museum (2.8 miles south-east). Not far away are WWT Arundel and Highdown Hill.
What affects the cost of sand mastic
Some jobs are bigger than they look, and some smaller. The main factors:
- The size of the job
- Working hours on commercial sites
- Whether there’s mould to deal with
- The number of rooms or windows
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 the work is at height. We take all of that into account in your quote.
What we need to know
There’s no need for technical detail. It helps if you can tell us:
- Pictures of the joints, sent by email
- If someone has resealed it before
- Roughly how big the job is
- The address or postcode of the job
Getting a quote is simple: let us know what needs doing and where, and roughly how big it is. Photos by email help us understand the job, and we’ll take it from there.
What the job involves on each surface
Period and listed homes
A traditional finish suits a period property.
Sash and case windows
The mastic round a sash window is on show so we finish it carefully.
Can I do it myself?
If you’re set on DIY, put the effort into 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.
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
How it works
On the day, we start by going over the job with you. We protect the surfaces around the joints before any work begins. The work normally takes a few hours for a single window, longer for several. In a small place like Crossbush, access is generally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- First we agree which joints need doing.
- Old mastic and any loose material are raked out.
- We pack any deep voids first.
- The sand mastic is mixed and pressed into the joint by hand.
- The surface is finished to suit the stone or brick.
Preparing for the visit
- Move anything stored near the joints
- Let us know about parking restrictions
- Try not to wet indoor joints just before the visit
How to get a quote
For a quote, call 0345 464 0079 or drop us an email and tell us where the job is and what the problem looks like. We will send you a clear quote before any work starts.