East Sussex · England
Sand Mastic in Lower Dicker
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for Lower Dicker, backed by a 12-month guarantee. Ask us for a quote.
- Gaps round a timber door in stone or brick
- Tired mastic found when preparing windows for paint
- Cement or filler used on old window joints that has cracked
How we handle sand mastic in Lower Dicker
A silicone bead around a sash window can look out of place and does not suit the building. Sand mastic is the traditional choice and we can swap the silicone for it. Common call-outs are for crumbling sand mastic round a window and weathered mastic on the most exposed windows, on period & listed homes, stone surrounds and brick reveals.
Outdoor sealant needs dry, clean surfaces, so work on frames around Lower Dicker is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
There’s a 12-month guarantee on every job, large or small.
- Place
- Lower Dicker (BN27)
- Wider area
- East Sussex
- Guarantee
- 12 months on all our work
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Aftercare tips
How long the joints last depends on use and care. We suggest:
- Clear gutters so water does not pour onto the windows
- Sort the mastic before the decorators arrive
- Look over the window mastic once a year
- Avoid patching sand mastic with silicone
Make sure water drains away from the window surround. Constant wetting wears the mastic faster.
Gaps round a sash box let in draughts and rain. The longer it’s left, the more the joint opens.
What affects the cost of sand mastic
Some jobs are bigger than they look, and some smaller. What affects the quote:
- The size of the job
- Which sealant suits the joint
- How much old sealant there is and how hard it is to remove
- Any working-time requirements on site
We do not show prices on the website, because each job is priced on what it involves. Call for a quick quote and we will talk you through it.
What we need to know
Before you ask for a quote, have a think about:
- The address or postcode of the job
- How we’d reach the joints
- Pictures of the joints, sent by email
- The rough size of the job
Quotes start with a quick conversation. Describe the problem, the location and the size of the job. Whenever you are ready, phone 0345 464 0079 or email us.
What sand mastic looks like in Lower Dicker
The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. Historic houses like Horselunges Manor (about 1.2 miles east) are a reminder that the area around Lower Dicker has older buildings as well as new. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
For an older house near a landmark such as Zoar Strict Baptist Chapel, frames set in older brick or stone need a sealant that suits the wall as well as the frame. For site and facilities teams at buildings such as Hellingly Community Primary School, the mastic around its windows and doors needs looking after like any other building’s.
Lower Dicker is about 2 miles north-west of Hailsham, in East Sussex. Lower Dicker gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a one-year guarantee. Our East Sussex coverage runs to 289 places, and Lower Dicker is one of them. There’s also a page for Brighton, roughly 16 miles from Lower Dicker.
We cover every part of the BN27 postcode area for sand mastic. We cover properties on Hackhurst Lane, Diamond Drive and Court Lodge Close. Neighbouring places we cover for sand mastic include Lower Horsebridge (1 mile east), Nash Street (1 mile north-west), Tile Hurst (1 mile south-east), Upper Dicker (1 mile south-west) and Upper Horsebridge (2 miles east). Within a short drive, we also cover Eastbourne (7 miles south-east), Hastings (15 miles east), Bexhill-on-Sea (11 miles east), Seaford (9 miles south-west), Lewes (9 miles west) and Crowborough (12 miles north).
Local landmarks in Lower Dicker
We work in homes and buildings around Hailsham Community College and Bede's Prep School. For rail, the closest station is Berwick (Sussex) station, about 3.9 miles south-west of the centre. Well-known places in the area include Sussex Farm Museum (3.5 miles north) and Hellingly Hospital Railway (1.8 miles east).
When to call us in Lower Dicker
Timber swells and shrinks with the weather. That movement opens up the mastic joint over time.
People generally contact us after spotting one of these:
- Tired mastic found when preparing windows for paint
- Old sand mastic that has cracked, crumbled or fallen out
- A silicone bead on a sash window that spoils the look
- Draughty sash windows at the surround
For landlords with property near Berwick (Sussex) station, older sash windows in a rental need their mastic kept sound to keep the weather out.
Before booking anyone
- Whether you can choose the colour
- When the joint can take water or movement
- How much experience the applicator has
- Which sealant they’ll use, and why
Common questions in Lower Dicker
Will you come out to Lower Dicker?
Yes, Lower Dicker is covered. We work across London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
I let a flat near Berwick (Sussex) station. Can you help?
Yes, rental work is part of what we do. Just call 0345 464 0079 or send us an email and tell us about the property, and we’ll give you a clear quote.
Is the work guaranteed?
All our work has a 12-month guarantee, and we are fully insured.
Is it messy?
Tidy work is part of the job. Nearby surfaces are protected, and the area is left clean when we finish.
Can you match the sealant colour?
Generally, yes. White, clear and grey are common, and other colours are available for many products, and we’ll agree it with you first.
What’s sand mastic made of?
Sand mastic is a traditional material for pointing round windows and doors. It combines sand with a linseed-oil-based binder.
Should I use sand mastic or silicone?
We will talk it through with you. Period homes often look best with sand mastic and newer frames suit modern sealant.
What should I tell you?
A short description and the location, with photos by email if possible. If we need more, we will ask.
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 getting the depth right matters as much as the look.
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
How the job changes by surface
Timber door frames
Round a period front door, sand mastic gives the right look.
Period and listed homes
A traditional finish suits a period property.
Landlord and commercial work in Lower Dicker
We also work for property managers and facilities teams. We can quote a run of properties together.
Whether it’s one flat or a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
Towns and villages near Lower Dicker
Also in Lower Dicker
How the visit works
All our tools and materials come with us in the van, so you do not need to buy or prepare anything. Once we’ve agreed what’s being done, the area is protected and the work begins. It normally takes anything from a few hours to a full day, depending on how many windows. Somewhere as small as Lower Dicker, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- Each surround is checked first.
- We rake out the old mastic and clean the joint.
- Large voids are packed out.
- We point the joint with sand mastic by hand.
- We finish the mastic to a tidy line.
Preparing for the visit
- Let us know about parking restrictions
- Where the joints are inside, avoid wetting them before we arrive
- Mention any tricky access
How to get 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. You will have a clear quote before we start.