East Sussex · England
Sand mastic for sash & case windows in Whitesmith, East Sussex
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for householders, landlords and businesses in Whitesmith. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Open joints round the window box
- Old sand mastic that has cracked, crumbled or fallen out
- Mastic round period door frames that has failed
Work for landlords, hotels and businesses
Hotels need rooms back in use, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance.
Sand mastic in Whitesmith, done properly
Silicone on a period window often looks wrong and isn’t always the right material. Sand mastic is the traditional choice, and we can replace one with the other. We work on sash and case windows, period & listed homes and tenement windows, and the jobs we see most are cracked mastic round a front door frame and cement or filler used on old window joints that has cracked.
Somewhere as small as Whitesmith, older homes often have timber frames set in stone or brickwork. Older buildings like these don’t always suit modern silicone, and sometimes a traditional sand mastic is the better choice.
Each job carries a 12-month guarantee, whatever its size.
- Place
- Whitesmith (BN8)
- Wider area
- East Sussex
- Guarantee
- A year, on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Places near Whitesmith
Other services in Whitesmith
Windows and doors in Whitesmith
With historic houses such as Michelham Priory (about 3.5 miles south-east) nearby, there’s older building stock in the area around Whitesmith as well as newer homes. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic. 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.
Letting a property close to Berwick (Sussex) station? Then older sash windows in a rental need their mastic kept sound to keep the weather out. Managing a site like Chiddingly Primary School? Then larger buildings have plenty of frames, and the mastic around each one ages.
Whitesmith is about 5 miles north-west of Hailsham, in East Sussex. Homes, rented property, offices and hotels in Whitesmith is covered for sand mastic. Every job comes with our 12-month guarantee. Whitesmith is one of 289 towns and villages in East Sussex we cover. You can also see our page for Brighton, roughly 14 miles from Whitesmith.
All of BN8 is within our area for sand mastic. Whether your property is on Whitesmith Lane and Whitesmith or anywhere close by, we can help. We also cover the places around Whitesmith: Chiddingly (1 mile east), East Hoathly (1 mile north), Halland (2 miles north-west), Shortgate (2 miles west) and Blackboys (4 miles north). Within a short drive, we also cover Eastbourne (10 miles south-east), Bexhill-on-Sea (13 miles east), Seaford (9 miles south), Lewes (8 miles west), Hailsham (5 miles south-east) and Crowborough (10 miles north).
Landmarks near Whitesmith
The nearest railway station is Berwick (Sussex) station, roughly 4.5 miles south. Other landmarks nearby include Hellingly Hospital Railway (4 miles east) and Tickerage Castle (4.6 miles north). For a walk, there’s Selwyns Wood.
What affects the cost of sand mastic
Call for a quick quote. What matters most is:
- The size of the job
- Whether there’s mould to deal with
- The old material and how stubborn it is
- When we can work, for business premises
Some things make a job bigger or smaller: the old material and how easily it comes out, whether mould needs treating, and whether we need extra access for height. We take all of that into account in your quote.
What we need to know
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- Access, such as stairs, a lift or height
- The rough size of the job
- Where the property is
- The problem you’ve noticed
For a quick quote, get us on the phone, or email us if that is easier. Describe what needs sealing and we’ll talk you through the work and give you a clear price.
Questions from Whitesmith
Do you cover smaller places like Whitesmith?
Yes, we do. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Do you cover Whitesmith for sand mastic?
Yes. We work across London and the South East, and Whitesmith is part of that. You can call 0345 464 0079 or email us and let us know what needs doing, and we will give you a clear price.
Can you work on commercial sites?
Yes. We work in offices, washrooms, hotels and other commercial premises. We can talk about working times when we quote.
Will there be a smell?
It depends on the product. Some products have a noticeable smell, others very little, and any smell fades as they cure.
Which is right for my windows, sand mastic or modern sealant?
Sand mastic normally suits period timber windows best. Modern frames normally suit a flexible sealant, and we will explain why.
Is the work guaranteed?
Our 12-month guarantee applies to all our work.
Will it make a mess?
No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.
Can you seal over the old sealant?
No. Fresh sealant doesn’t stick to old sealant, and it traps any mould or water underneath. We remove it all first.
How the visit works
There’s no need to move everything out before we come, just the space around the work. Everything nearby is protected, and the job takes a few hours per window, depending on the condition of the joints for a typical job. In a small place like Whitesmith, access is usually the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We check the window surrounds and agree which joints need renewing.
- The loose and crumbling mastic is raked out and the joint cleaned.
- Deep voids are packed so the mastic is the right thickness.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- The mastic is finished to sit tidily against the stone or brick.
How to prepare
- Let us know about stairs, lifts or work at height
- Mention any parking rules near the property
- Keep pets and children clear of the area while we work
Ask for a quote
We quote each job on its own. Simply phone 0345 464 0079 or send us an email and describe the job.
Advice
What happens if it’s left?
Before painting the windows, it pays to renew the mastic. Paint over cracked mastic won’t stop the gaps and traditional guidance is to leave the new mastic unpainted. Older cottages and farmhouses around Whitesmith can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
The cost depends on the size of the job, how much old material has to come out and access to the work. We give a clear quote before we start, so you know where you stand.
What you get with us
- Trusted Arbo and Everbuild sealants
- Experience in homes, commercial sites and hotels
- More than 20 years in sealant work
- Fully insured
Read our cost guide or customer reviews.
What the job involves on each surface
Timber door frames
Period doors in stone or brick openings are often pointed with sand mastic. The method is the same as for windows.
Tenement and terrace windows
In shared buildings, the windows may be part of a wider repair so it’s worth checking responsibilities.
When to call us in Whitesmith
Most of it is simply age. Sand mastic is a maintenance item like any pointing, depending on exposure and upkeep.
Keep an eye out for any of the following:
- A silicone bead on a sash window that spoils the look
- Patchy fillers round a sash window
- Old sand mastic that has cracked, crumbled or fallen out
- Draughts and rain around sash boxes
In the older streets around The Parish Church, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
What to look for in a quote
- How much experience the applicator has
- What guarantee comes with the work
- Whether the sealant suits the joint
- Are they insured?
Should I try it myself first?
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
If you’re set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.