West Sussex · England
Sand mastic for sash & case windows in Adversane, West Sussex
Traditional burnt sand mastic around sash and case windows and doors in stone and brick in Adversane, with a one-year guarantee on every job. Ask us for a quote.
- Wind and rain getting in round a sash window
- Mastic round period door frames that has failed
- Old sand mastic that has cracked, crumbled or fallen out
When something else is needed
A few problems are outside what sealant work can do:
- Rotten sashes, sills or window boxes (a joiner’s job)
- Damaged stone surrounds
- Decisions on consent for listed homes
Not sure which it is? You can call 0345 464 0079 or send us an email and we will tell you honestly.
Where we work in Adversane
- Tenement windows
- Brick reveals
- Sash and case windows
- Stone surrounds
- Timber door frames
- Period & listed homes
How we handle sand mastic in Adversane
For a listed home or one in a conservation area, ask your local planning authority whether consent is needed for work to windows. Sand mastic is often favoured as a like-for-like material. If you have gaps where the frame meets the masonry and silicone on a period window that looks wrong, we can help, whatever the surface.
Outdoor sealant needs dry, clean surfaces, so work on frames around Adversane is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
You are covered for a year from the day we finish. If anything isn’t right with it, call 0345 464 0079 or drop us an email.
- Location
- Adversane (RH14)
- Wider area
- West Sussex
- Guarantee
- One year on every job
- Quote
- A clear price before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
How we quote for sand mastic
We quote each job individually. These are the things that affect it:
- Any mould that needs treating
- How much old sealant there is and how hard it is to remove
- How many areas need sealing
- The amount of work
The cost depends on the size of the job, how much old material has to come out and access to the work. You’ll have a clear quote before any work starts.
What to tell us for a quote
There’s no need for technical detail. Just tell us:
- What the problem is, such as mould, gaps, leaks or cracking
- Where the property is
- Roughly how big the job is
- Pictures of the joints, sent by email
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is.
Landlord and commercial work in Adversane
In hotels, rooms out of use cost money, so the work can be planned room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
Aftercare tips
So the new joints stay in good condition:
- Ask a joiner to look at soft timber first
- Take care around the mastic when scraping paint
- Clear gutters so water doesn’t pour onto the windows
- Check the mastic when you check the paintwork
Avoid painting over the new mastic, as traditional guidance advises. Ask us before any decorating around it.
Sound mastic protects the frame. Once it fails, water can sit against the timber and timber that stays wet can rot.
Also near Adversane
What else we do in Adversane
DIY versus a professional finish
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it peels away and traps moisture behind it. Everything old must be removed first.
The process
There’s no need to move everything out, just the space around the work. We protect the rest, and the work takes a few hours per window, depending on the condition of the joints in most cases. Somewhere as small as Adversane, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- First we agree which joints need doing.
- We remove the old, loose mastic.
- We pack any deep voids first.
- We apply the mastic by hand and shape it.
- The surface is finished to suit the stone or brick.
How to prepare
- Let us know about parking restrictions
- Tell us about any previous sealing or DIY attempts
- Plan for the work area to be out of bounds to pets and children
Ask for a quote
There’s no standard price list. Instead, your job gets its own clear quote. To arrange one, call 0345 464 0079 or email us.
Related advice
Adversane questions
Do you cover smaller places like Adversane?
Yes. Adversane is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Can you do sand mastic in Adversane?
Yes. We work across London and the South East, and Adversane is part of that. You can ring 0345 464 0079 or drop us an email and let us know what needs doing, and we will give you a clear price.
Do you hold any approvals?
Yes. Mr Mastic is an ARBOMaster approved applicator and we are fully insured too.
Will you leave a mess?
We keep the work tidy. We protect what’s around the joints, and we clear up when we’re done.
Is consent needed for window work on a listed home?
It’s best to ask your local planning authority first. Like-for-like sand mastic is often the preferred finish but the decision is theirs.
I rent my home. Can I book you?
Yes, but check with your landlord or agent first. Many landlords are glad to have it sorted.
Should I use sand mastic or silicone?
It depends on the window. On many period windows, sand mastic looks right and suits the building and newer frames generally get a flexible sealant.
Do I need to be at home?
It depends on the job. Inside work needs someone to give us access.
What sand mastic looks like in Adversane
Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. With historic houses such as Old Place Manor (about 3.2 miles south-west) nearby, there’s older building stock in the area around Adversane 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.
Schools such as The Weald School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages. Rented homes near Billingshurst station change hands often, and cracked sand mastic around sash windows lets in the draughts tenants complain about. Old Place Manor, about 3.2 miles south-west, is one of the historic houses in the wider area around Adversane, and older homes nearby need a sealant that suits their walls.
Adversane is about 8 miles south-west of Horsham, in West Sussex. From the centre of Adversane to the outskirts, we cover sand mastic for every kind of property, from flats and houses to offices and hotels. Across West Sussex, we cover 371 places, Adversane among them. For nearby work, see our Crawley page.
Every address in RH14 is covered for sand mastic, from the main roads to the quietest streets. Whether your property is on Stane Street, Adversane Lane and Lordings Road or anywhere close by, we can help. Neighbouring places we cover for sand mastic include North Heath (1 mile south), Gay Street (2 miles south), Codmore Hill (2 miles south-west), Broomershill (2 miles south) and Nutbourne (3 miles south). Within a short drive, we also cover Crawley (15 miles north-east), Horsham (8 miles north-east), Worthing (12 miles south), Burgess Hill (15 miles east), Littlehampton (13 miles south) and Shoreham-by-Sea (14 miles south-east).
Landmarks near Adversane
For rail, the closest station is Billingshurst station, roughly 1.5 miles north-east of the centre. The countryside around Adversane includes The Mens.
What the job involves on each surface
Timber door frames
Door frames get knocked and soaked, so their mastic can fail sooner. It’s renewed by hand.
Sash and case windows
Sash windows are where we do most sand mastic work. We renew the mastic round each box.