Kent · England
Sand mastic for sash & case windows in Lower Haysden, Kent
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homes and businesses in Lower Haysden and across Kent. Fully insured, ARBOMaster approved and guaranteed for a year.
- Modern sealant on a period surround
- Mastic round period door frames that has failed
- Patchy fillers round a sash window
Sand mastic for homes and businesses in Lower Haysden
Sand mastic is the traditional way to point the gap between a timber window frame and the stone or brick around it. It’s a mix of sand and a linseed-oil-based binder and built up by hand. On older homes, it suits the building far better than silicone. Common call-outs are for mastic dropping out of the joint and cement or filler used on old window joints that has cracked, on stone surrounds, period & listed homes and brick reveals.
Mastic can only go onto a dry, clean joint, so window work in Lower Haysden is booked around the forecast. Tell us about access to every side of the house, including upper-floor windows.
Whatever the size of the job, it’s backed by our one-year guarantee.
- Location
- Lower Haysden (TN11)
- Wider area
- Kent
- Guarantee
- One year on every job
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Quotes for sand mastic in Lower Haysden
The quote reflects the job in front of us. We look at:
- The number of rooms or windows
- Working hours on commercial sites
- How much old sealant there is and how hard it is to remove
- Any mould that needs treating
There are no prices on our website, because each job is priced on what it involves. For a quick quote, please ring 0345 464 0079 or email us and we’ll talk you through it.
What we need to know
What to tell us when you ask for a quote:
- What the problem is, such as mould, gaps, leaks or cracking
- If it’s domestic, commercial or a hotel
- How many joints, rooms or windows are involved
- A few pictures by email, if you can
Asking for a quote is easy: let us know the job and the location, and roughly how big it is. A few pictures by email make the job easier to understand, and we will come back to you with a quote.
Frames and glazing around Lower Haysden
With historic houses such as Penshurst Place (about 2.8 miles west) nearby, there’s older building stock in the area around Lower Haysden as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. 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.
Rented homes near Tonbridge station change hands often, and cracked sand mastic around sash windows lets in the draughts tenants complain about. Managing a site like Sussex Road Community Primary School? Then its window and door frames need their mastic kept sound, just like a home’s.
Lower Haysden is about 2 miles south-west of Tonbridge, in Kent. Lower Haysden gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a 12-month guarantee. We cover 922 towns and villages across Kent, large and small. We also work in Crawley, about 20 miles from Lower Haysden.
Every address in TN11 is within our area for sand mastic. We also cover the places around Lower Haysden: Leigh (1 mile west), Bidborough (1 mile south), Tonbridge (2 miles north-east), Printstile (2 miles south-west) and Southborough (2 miles south). We also work in nearby towns such as Maidstone (13 miles north-east), Sevenoaks (7 miles north), Royal Tunbridge Wells (4 miles south), Swanley (15 miles north), Kings Hill (9 miles north-east) and Foley Park (14 miles north-east).
Near you in Lower Haysden
Locally, jobs take us to homes and businesses close to West Kent College, The Plough Inn and The Judd School and the streets around them. Lower Haysden’s nearest station is Tonbridge station, roughly 1.1 miles east of the centre. Well-known places in the area include The Milne Museum (1.4 miles north-east) and Tonbridge Castle (1.3 miles north-east). The countryside around Lower Haysden includes Barden Lake and Tudeley Woods RSPB reserve.
Places near Lower Haysden
Also in Lower Haysden
The process
We bring everything the job needs with us, so there’s nothing for you to buy. After a quick look at the joints together, we protect the area and start. Most jobs take a few hours per window, depending on the condition of the joints. For a village or hamlet like Lower Haysden, the journey is planned in advance: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- We check each window surround and the condition of the joint.
- We rake out the old mastic and clean the joint.
- Large voids are packed out.
- We point the joint with sand mastic by hand.
- The finish is dressed neatly.
Getting ready for the visit
- Tell us about access, such as stairs, a lift or high-level joints
- Let us know about earlier repairs to the joints
- Try not to wet indoor joints just before the visit
How to get a quote
For a quote, phone 0345 464 0079 or drop us an email with the location and a short description of the problem. You will have a clear quote before any work starts.
Read more
Landlord and commercial work in Lower Haysden
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
Failed sealant is one of the commonest items on a check-out report. Several properties can go on one quote.
When something else is needed
We will not take on work that won’t last, so here’s what sealant can’t put right:
- Whether work needs listed building consent
- Sashes that need overhauling
- Masonry that needs repairing
If you’re not sure, just call 0345 464 0079 or send us an email and we’ll give you a straight answer.
Joints and surfaces we work on
- Sash and case windows
- Brick reveals
- Period & listed homes
- Timber door frames
- Stone surrounds
- Tenement windows
Aftercare tips
Once the sealant has cured, a few habits help it last:
- Do not paint over the new mastic
- Check with your local planning authority if your home is listed
- Plan mastic work ahead of painting
- Make sure water runs off the sill
Do not run silicone over the new mastic. If you see a crack, ask us to take a look rather than patching it.
Good mastic helps keep the frame dry. Once it fails, water can sit against the timber and timber that stays wet can rot.
Signs you need sand mastic in Lower Haysden
Water gets into small cracks in the mastic and loosens it further. Windows facing the weather tend to go first.
People normally contact us when they notice one of these:
- Failed mastic on an exposed elevation
- Modern sealant on a period surround
- Mastic round period door frames that has failed
- Wind and rain getting in round a sash window
For an older house near a landmark such as St Stephen's Mission 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
- Whether they seal over old material or remove it
- Whether you can choose the colour
- Who turns up on the day
- What the quote includes, VAT included or not
Common questions in Lower Haysden
Is Lower Haysden in your area for sand mastic?
Yes. Our work covers London and the South East, and Lower Haysden is part of that. You can phone 0345 464 0079 or drop us an email and let us know what needs doing, and we will give you a clear price.
Can you help a landlord with a rental near Tonbridge station?
Yes, rental work is part of what we do. You can call 0345 464 0079 or email us with the address and a few details, and we will give you a fixed price before we start.
Are you fully insured?
Yes. Mr Mastic is fully insured.
Can new sealant go over the old?
No. We remove every bit of old sealant first.
Do you offer different sealant colours?
Usually, yes. White, clear and grey are common, and other colours are available for many products, and we agree the colour with you before any work starts.
How long does sand mastic take to harden?
It takes a while. It skins first and hardens fully later, and we’ll tell you what to expect.
Do I need to be at home?
Access is agreed with you when the job is booked. Indoors, that generally means someone at home.
How do I get a quote for sand mastic in Lower Haysden?
The cost depends on the size of the job, access and how much old sealant has to come out. Ask us for a quote and we will talk you through it.
How the job changes by surface
Sash and case windows
The mastic round a sash window is on show so we finish it carefully.
Stone surrounds
Old stone surrounds are often uneven, so the gap isn’t the same all the way round. We shape it by hand to follow the stone.