West Sussex · England
Sand mastic for sash & case windows in Avisford, West Sussex
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homeowners, landlords and businesses in Avisford. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Modern sealant on a period surround
- Old cement repairs round a window that have failed
- Gaps where the frame meets the masonry
About our sand mastic in Avisford
Sand mastic has long been used to fill the joint between timber frames and masonry. It’s made from sand and a linseed-oil-based binder and built up by hand. On period homes, it looks right where silicone wouldn’t. Common call-outs are for draughty sash windows at the surround and mastic round period door frames that has failed, on stone surrounds, period & listed homes and timber door frames.
Outdoor sealant needs dry, clean surfaces, so work on frames around Avisford is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
Our work is backed for twelve months, and the guarantee is the same wherever you are.
- Where
- Avisford (BN18)
- Wider area
- West Sussex
- Guarantee
- A year, on every job
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Windows and doors in Avisford
London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Homes close to Church of St Mary include some older properties, and the joint between an old wall and a newer frame is usually the first place rain gets in. Letting a property close to Barnham station? Then older sash windows in a rental need their mastic kept sound to keep the weather out. Managing a site like Walberton and Binsted CofE Primary School? Then the mastic around its windows and doors needs looking after like any other building’s.
Avisford is about 4 miles north-west of Littlehampton, in West Sussex. Homes, rented property, offices and hotels in Avisford can book us for sand mastic, old or new, large or small. Every job comes with our 12-month guarantee. Avisford is one of 371 places in West Sussex we cover for sand mastic. Portsmouth is on our list too, around 20 miles away.
Work in BN18 is quoted and booked the same way as anywhere else. If you’re just outside Avisford, we cover Binsted (1 mile east), Walberton (1 mile south-west), Slindon Common (1 mile north-west), Slindon (1 mile north-west) and West Barnham (2 miles south-west). Larger places within reach include Worthing (9 miles east), Bognor Regis (5 miles south-west), Chichester (7 miles west), Selsey (11 miles south-west), Littlehampton (4 miles south-east) and Shoreham-by-Sea (15 miles east).
Around Avisford
Typical jobs here are in homes near St Philip Howard Catholic High School. The nearest railway station is Barnham station, about 1.7 miles south-west of the centre. Other landmarks nearby include Arundel Castle (2.6 miles east) and Arundel and District Hospital (2.1 miles east). Open spaces near Avisford include Bignor Hill and WWT Arundel.
How the job changes by surface
Sash and case windows
Most of our sand mastic work is on sash windows. Each joint round the box is raked out and renewed.
Stone surrounds
The stone is treated with care when the old mastic comes out.
Honest limits
We’d rather tell you now than do work that won’t last, so these are the limits:
- Rotten sashes, sills or window boxes (a joiner’s job)
- Cracked or broken glass
- Masonry that needs repairing
If you are not sure, just phone 0345 464 0079 or send us an email and we’ll give you a straight answer.
What we seal
- Stone surrounds
- Tenement windows
- Sash and case windows
- Period & listed homes
- Timber door frames
- Brick reveals
DIY sealant or a professional job?
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, 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, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Quotes for sand mastic in Avisford
For a quick quote, just ask. The main things that affect it are:
- How much old sealant there is and how hard it is to remove
- Which sealant suits the joint
- Any working-time requirements on site
- How many areas need sealing
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all play a part.
What we need to know
Photos by email are helpful but not essential. Please mention:
- Roughly how big the job is
- Photos by email, if that’s easy
- Where the job is, and your postcode
- What the problem is, such as mould, gaps, leaks or cracking
For sand mastic in Avisford, ring 0345 464 0079 or email us. Tell us what the problem is and where, and you will get a clear quote before we start.
Landlords, agents and businesses in Avisford
We also work for property managers and facilities teams. Several sites can be quoted together, and we’re fully insured for the work.
We regularly work with letting and managing agents. Tell us the address, the job and how access works and we will quote.
Looking after it afterwards
So the new joints stay in good condition:
- Inspect the joints round the windows every year or so
- Find out about consent before window work on a listed home
- Don’t paint over the new mastic
- Go gently near the mastic when preparing windows
Don’t run silicone over the new mastic. If anything cracks, get it looked at before trying a quick fix.
Crumbling mastic lets rain into the joint. That water can reach the timber frame and the wall, so renewing it early is worth it.
How the visit works
Our applicators work methodically: protect, prepare, seal, tidy. For most jobs that takes a few hours per window, depending on the condition of the joints, and the area is left clean. Somewhere as small as Avisford, 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.
- 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.
- We dress the finish so it sits neatly against the masonry.
Before we arrive
- Let us know about earlier repairs to the joints
- Move anything stored near the joints
- Let us know about stairs, lifts or work at height
Getting a quote
To get a quote, call 0345 464 0079 or send 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.
Advice
Questions from Avisford
Can you do sand mastic in Avisford?
Yes. Our work covers London and the South East, and Avisford is part of that. Just ring 0345 464 0079 or email us with a few details of the job.
Do you cover smaller places like Avisford?
Yes, we do. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Do I need to be at home?
If the work is inside, we need someone to let us in. After that, you can carry on with your day.
Are you ARBOMaster approved?
Yes. We’re approved under the ARBOMaster scheme, the approved applicator scheme for Arbo sealants.
Can I choose the sealant colour?
Yes. Sealants come in white, clear, grey and other colours for many products, and we will agree it with you first.
What is sand mastic?
It’s sand mixed with a linseed-oil-based binder, used between timber frames and stone or brick.
How much does sand mastic cost in Avisford?
There’s no set price, as it depends on the job: how much there is, what’s there now, how we reach it and what it needs. We agree the price before any work begins.
How long does sand mastic take?
Typically it takes a few hours for a single window, longer for several. Larger jobs naturally take longer.