Kent · England
Lullingstone Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homeowners, landlords and businesses in Lullingstone. Fully insured, ARBOMaster approved and guaranteed for a year.
- Gaps where the frame meets the masonry
- Patchy fillers round a sash window
- Modern sealant on a period surround
About our sand mastic in Lullingstone
We renew sand mastic around sash windows and doors set in stone or brick. The old mastic is raked out, and new mastic is applied and shaped by hand. If you have silicone on a period window that looks wrong and mastic round period door frames that has failed, we can help, on tenement windows, timber door frames and period & listed homes alike.
In a village or hamlet like Lullingstone, older cottages and farmhouses often have timber windows set in stone or brick. Not every older frame suits a modern silicone bead, so the sealant has to be chosen to suit the building.
Big or small, it’s backed by our 12-month guarantee in Lullingstone and across Kent.
- Location
- Lullingstone (DA4)
- Wider area
- Kent
- Cover
- A year, on every job
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
The process
A visit follows a simple pattern: we check the joints, mask and protect the surrounding surfaces, carry out the job and clear up. Most jobs take anything from a few hours to a full day, depending on how many windows. Somewhere like Lullingstone needs a little journey planning: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- We start by checking each surround and agreeing the joints to renew.
- Old, loose mastic is raked out and the joint cleaned.
- Large voids are packed out first, so the mastic isn’t too thick.
- The mastic is mixed, pressed into the joint by hand and shaped.
- The finish is dressed so it sits neatly against the stone or brick.
Preparing for the visit
- For business premises, tell us about site rules or sign-in
- Mention any leaks or damp you’ve noticed
- For indoor joints, keep the area dry beforehand if you can
Getting a quote
There’s no standard price list, as no two jobs are quite the same. Instead, we give you a clear quote for your job. To arrange one, call 0345 464 0079 or drop us an email.
Related advice
Quotes for sand mastic in Lullingstone
There’s no set price list. What we look at:
- The old material and how stubborn it is
- The size of the job
- Working hours on commercial sites
- How easy the joints are to reach
Some things make a job bigger or smaller: the old material and how easily it comes out, any mould to treat, and whether we need extra access for height. Your quote takes all of that into account.
Helping us quote
Before you ask for a quote, have a think about:
- A few photos by email, if you can
- Whether it has been sealed before
- How many joints, rooms or windows are involved
- How we’d reach the joints
Getting a quote is simple: let us know the job and the location, and roughly how big it is. A few photos by email make the job easier to understand.
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.
Brick reveals
Gaps between frame and brick let in rain and draughts. Renewing the mastic closes it.
Why act early in Lullingstone
Draughts round a sash window are not always the sashes. Gaps between the frame and the wall can be just as bad and new mastic seals them. Around Lullingstone, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
Every job is a little different, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all make a difference, and we will explain the quote if you ask.
Why choose Mr Mastic in Lullingstone
- Full insurance on every job
- 4.9 on Google from 180+ five-star reviews
- ARBOMaster approved applicator
- Homes, businesses and hotels
Looking after it afterwards
To keep the joints looking good and working properly:
- Get any rot dealt with first
- Keep sills and gutters clear so water drains away
- Go gently near the mastic when preparing windows
- Leave the new mastic unpainted
Leave the new mastic unpainted, which is the traditional advice. Ask us before any decorating around it.
Once mastic starts to crumble, rain gets in. That water can reach the timber frame and the wall, so renewing it early is worth it.
Common questions in Lullingstone
I let a flat near Eynsford station. Can you help?
Yes, rental work is part of what we do. Just ring 0345 464 0079 or email us and tell us about the property, and we will give you a clear quote.
Will you come out to Lullingstone?
Yes, we do. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Is sand mastic better than silicone for my windows?
It depends on the window. On many period windows, sand mastic looks right and suits the building and newer frames normally get a flexible sealant.
Is consent needed for window work on a listed home?
Your local planning authority is the one to ask. They decide whether consent is needed for work to your windows.
Can you replace silicone on a period window with sand mastic?
Yes. The silicone is cut out and the joint cleaned, then point it with sand mastic.
Do you take out the old sealant first?
Yes. Sealing over old sealant is the main reason resealing fails early, and it’s something we never do.
Do I need to be at home?
It depends on the job. For work indoors, someone needs to let us in, and for outside work we’ll agree access with you when we book.
Are you fully insured?
Yes. Mr Mastic is fully insured.
Signs you need sand mastic in Lullingstone
Shallow joints are a common cause. Mastic that’s too thin cracks and drops out, which is why we pack deep voids first and get the depth right.
Any of these means the joints need attention:
- Window mastic to renew ahead of painting
- Gaps where the frame meets the masonry
- Gaps round a timber door in stone or brick
- Old cement repairs round a window that have failed
Rented homes near Eynsford station change hands often, and any sash windows need sound mastic to keep draughts and rain out.
What to look for in a quote
- Are they insured?
- Which sealant they’ll use, and why
- How long the guarantee is
- How the colour is chosen
DIY versus a professional finish
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
If you’ve already had a go yourself, that’s fine. We cut it out and start again, so just mention it when you contact us.
What sand mastic looks like in Lullingstone
The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. Historic houses like Lullingstone Castle (about 0.1 miles east) are a reminder that the area around Lullingstone has older buildings as well as new. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic.
If you live in an older home near Church of Saint Botolph, the joint between an old wall and a newer frame is normally the first place rain gets in.
Lullingstone is about 3 miles south of Swanley, in Kent. Across the DA4 area, we can carry out sand mastic at your property. Lullingstone is one of 922 towns and villages in Kent we cover for sand mastic. Our London page covers work nearby (16 miles or so).
Here we cover the DA4 postcode area for sand mastic. Other places close to Lullingstone include Shoreham (2 miles south), Well Hill (2 miles west), Crockenhill (2 miles north-west), Maypole (2 miles west) and Bopeep (2 miles west). We also work in nearby towns such as Dartford (6 miles north), Sevenoaks (5 miles south), Gravesend (9 miles north-east), Tonbridge (12 miles south), Northfleet (8 miles north-east) and Swanley (3 miles north).
What’s near Lullingstone
Around Lullingstone, our work takes us to homes and buildings near The Malt Shovel pub and Raspberry Hall Park. Lullingstone’s nearest station is Eynsford station, about 0.6 miles north-east of the centre. Nearby you will also find Lullingstone Castle (less than half a mile east) and Orpington Hospital (4.2 miles west). Not far away are The Warren.