Kent · England
Sand Mastic in Old Tree
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for householders, landlords and businesses in Old Tree. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Draughts and rain around sash boxes
- Crumbling sand mastic round a window
- Cement or filler used on old window joints that has cracked
Common problems we fix in Old Tree
Decorating can disturb tired mastic. It’s often found when windows are being prepared for paint, which is a good time to renew it.
Common reasons people contact us include:
- Cement or filler used on old window joints that has cracked
- Wind and rain getting in round a sash window
- Mastic that needs renewing before redecorating
- Mastic round period door frames that has failed
Homes close to Church of the Holy Cross include some older properties, and replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
What your quote should include
- The length of the guarantee
- What insurance they hold
- How the joint is cleaned and prepared
- Who turns up on the day
Sand mastic in Old Tree, done properly
Burnt sand mastic is a traditional material that sits naturally against stone and brick. It’s a good fit for period properties where a modern sealant bead would stand out. We’re often asked to deal with gaps between timber frames and stone or brick and old sand mastic that has cracked, crumbled or fallen out, on timber door frames, sash and case windows and period & listed homes.
Mastic can only go onto a dry, clean joint, so window work in Old Tree is booked around the forecast. Tell us about access to every side of the house, including upper-floor windows.
We stand behind the work with a one-year guarantee.
- Place
- Old Tree (CT3)
- Wider area
- Kent
- Cover
- A year, on every job
- Quote
- A clear price before we start
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Towns and villages near Old Tree
More services for Old Tree
Landlords, agents and businesses in Old Tree
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. We can quote for more than one property at once.
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements.
What happens if it’s left?
Replacing sash windows is a big decision for a period home and on a listed home, consent may be needed. If the frames are sound, renewing the mastic deals with gaps and draughts at the surround. Where a wall is exposed, as many are in small places like Old Tree, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
The cost depends on how much there is to do, how hard the old material is to remove and how easy the joints are to reach. You’ll have a clear quote before any work starts, so you know where you stand.
Why book with us
- Tidy, careful work
- ARBOMaster approved applicator
- Quality sealants from Arbo and Everbuild
- Over 20 years’ experience
Read our cost guide or what customers say.
Honest limits
New sealant cannot fix everything, and we’ll tell you before work begins. It will not solve:
- Decisions on consent for listed homes
- Cracked or broken glass
- Sash cords, weights and draught-proofing of the sashes
Not sure which it is? You can ring 0345 464 0079 or drop us an email and we will tell you honestly before you book.
Joints and surfaces we work on
- Tenement windows
- Stone surrounds
- Sash and case windows
- Period & listed homes
- Brick reveals
- Timber door frames
What affects the quote in Old Tree
You’ll get a clear quote before we start. It’s based on:
- Any mould that needs treating
- The type of sealant required
- The number and length of the joints
- Whether the work is at height
Rather than a set price list, we price the job in front of us: how many joints, what’s in them now and how we reach them. You will know the price before we begin.
What we need to know
What to tell us when you ask for a quote:
- Any previous sealing or DIY work
- Access, such as stairs, a lift or height
- The type of property
- The rough size of the job
It all starts with a short chat. Describe the problem, the location and the size of the job. Whenever you’re ready, call 0345 464 0079 or email us.
How the job changes by surface
Brick reveals
Gaps between frame and brick let in rain and draughts. New mastic seals the gap.
Period and listed homes
Sand mastic is the like-for-like choice for many period homes. If your home is listed, ask your local planning authority about consent.
What we do, step by step
When we arrive, we start by going over the job with you. We protect the surfaces around the joints before work begins. Most jobs take anything from a few hours to a full day, depending on how many windows. Somewhere like Old Tree needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. 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.
- The loose and crumbling mastic is raked out and the joint cleaned.
- We pack any deep gaps so the mastic sits at the right depth.
- We mix the sand mastic and apply it by hand, shaping it to the joint.
- We dress the surface so it sits neatly against the masonry.
Getting ready for the visit
- Clear the area around the work
- For business premises, tell us about site rules or sign-in
- Mention any leaks or damp you’ve noticed
Ask for a quote
For a quick quote, get us on the phone, or email us if that’s easier. Tell us about the joints that need doing and we’ll explain what’s involved.
Read more
Old Tree homes and the weather
Old Tree is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. That’s hard on the mastic around older windows and doors, especially on the side facing the sea. Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Schools such as Hoath Primary School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages. Rented homes near Herne Bay station change hands often, and older sash windows in a rental need their mastic kept sound to keep the weather out.
Old Tree is about 3 miles south-east of Herne Bay, in Kent. Homes, rented property, offices and hotels in Old Tree can book us for sand mastic. The work is guaranteed for a year. 922 places in Kent are on our list. You can also see our page for Chelmsford, about 40 miles away.
Jobs for sand mastic in CT3 is quoted and booked the same way as anywhere else. Close by, we work in Maypole (1 mile west), Hoath (1 mile south-west), Millbank (1 mile north-west), Knave's Ash (1 mile south-west) and Hollow Street (1 mile south-east). We also work in nearby towns such as Canterbury (6 miles south-west), Margate (10 miles east), Dover (15 miles south), Ramsgate (10 miles east), Broadstairs (11 miles east) and Whitstable (6 miles west).
Landmarks near Old Tree
We work in homes and buildings around Curtis Wood and Spires Academy and the streets around them. For rail, the closest station is Herne Bay station, about 2.9 miles north-west of the centre. Other landmarks nearby include St Martins Hospital (5.1 miles south-west). Open spaces near Old Tree include West Blean and Thornden Woods.
FAQs for Old Tree
I let a flat near Herne Bay station. Can you help?
Yes, we work for landlords and letting agents. Just call 0345 464 0079 or drop us an email and tell us about the property, and we’ll give you a clear price.
Is Old Tree within the area you cover?
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.
Does someone need to be in?
Access is agreed with you when the job is booked. Indoors, that normally means someone at home.
Can you quote for more than one area?
Yes. Tell us about everything you’d like done and you will get one quote.
Do you offer different sealant colours?
Yes. Sealants come in white, clear, grey and other colours for many products, and we’ll agree it with you first.
Can I do it myself?
That depends on the joint. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
Which is right for my windows, sand mastic or modern sealant?
We will talk it through with you. Period homes often look best with sand mastic and newer frames suit modern sealant.
Where is Mr Mastic based?
We are based in Crawley, West Sussex, and we work across South East England, London and Scotland.