Kent · England
Herne Bay Sand Mastic
Sand mastic in Herne Bay from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Mastic worn away on windows facing the weather
- Old sand mastic that has cracked, crumbled or fallen out
- Open joints round the window box
Can I do it myself?
A DIY attempt does not rule out a professional job. We cut it out and start again.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
Sand mastic in Herne Bay
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. If you are dealing with tired mastic found when preparing windows for paint and failed mastic on an exposed elevation, we can help.
In a town like Herne Bay, the windows on the most exposed side of a house take the brunt of the rain, so the mastic there tends to fail first. Checking every frame, not just the obvious one, is time well spent.
The work is guaranteed for twelve months. If something is not right with it in that time, tell us and we will put it right.
- Location
- Herne Bay (CT6)
- Region
- Kent
- Cover
- One year on every job
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Landlord and commercial work in Herne Bay
In hotels, rooms out of use cost money, so the work can be planned room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance.
Different surfaces, different methods
Period and listed homes
A traditional finish suits a period property.
Sash and case windows
The box of a sash and case window sits in the stone or brick opening. The gap round it is pointed with sand mastic.
Towns and villages near Herne Bay
Also in Herne Bay
Quotes for sand mastic in Herne Bay
There’s no set price list, because jobs vary so much. What we look at:
- Whether there’s mould to deal with
- How much old sealant there is and how hard it is to remove
- The number of rooms or windows
- Which sealant suits the joint
Leaving a failed joint usually makes the job bigger, not smaller, because water and mould keep working on it. If you are not sure whether it needs doing, phone 0345 464 0079 or email us and we’ll give you an honest view and a quote.
What to tell us for a quote
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- A few photos by email, if you can
- The type of property
- Any previous sealing or DIY work
- What’s wrong with the joints now
Want a quote for sand mastic? Please phone 0345 464 0079 or drop us an email and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.
Why it’s worth doing now in Herne Bay
Gaps round a sash window let in rain and draughts. Water can get to the frame and the masonry, so dealing with it now protects both. Draughts from a gap round a frame, damp under a sill or water behind a bath panel all start small, and early is when they’re cheapest and quickest to sort.
What you pay reflects the work, not a rough estimate. That’s why we ask a few questions first and send you a clear quote before work begins.
Why us?
- We leave the area clean and tidy
- 180+ five-star Google reviews
- We never seal over old sealant
- ARBOMaster approved applicator
Take a look at what affects the cost or customer reviews.
How the visit works
Good joint work is mostly preparation, so that is where we spend the time. Joints are cleaned back and dried before anything new goes in. All told, the work takes a few hours for a single window, longer for several. For a job in Herne Bay, we need access to where the work is and somewhere nearby to park. For outside work, let us know about side access, gates and any upper-floor joints.
- We look at the surrounds with you and agree the joints to renew.
- Old mastic and any loose material are raked out.
- Deep gaps are packed so the mastic sits at the right depth.
- We apply the mastic by hand and shape it.
- The surface is finished to suit the stone or brick.
Before we arrive
- For indoor joints, keep the area dry beforehand if you can
- Clear items away from the joints we are working on
- Keep children and pets away from the work area
Getting a quote
To get a quote, phone 0345 464 0079 or drop us an email and tell us where the job is and what the problem looks like. We’ll give you a clear quote before any work starts.
Advice
Signs you need sand mastic in Herne Bay
Some old mastic was never deep enough. A thin layer doesn’t hold well, which is why we pack deep voids first and get the depth right.
If you can see any of these, it’s time to have the joints looked at:
- Gaps round a timber door in stone or brick
- Tired mastic found when preparing windows for paint
- Mastic worn away on windows facing the weather
- Old cement repairs round a window that have failed
In the older streets around Christ Church, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
What to look for in a quote
- How much experience the applicator has
- What the cure time is
- What guarantee comes with the work
- What preparation is included
Windows and doors in Herne Bay
Herne Bay is within about 1 mile of the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. That is hard on the mastic around older windows and doors, especially on the side facing the sea. Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Letting a property close to Herne Bay station? Then cracked sand mastic around sash windows lets in the draughts tenants complain about. Schools such as Herne Bay Junior School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s.
Herne Bay is about 7 miles north of Canterbury, in Kent. Every kind of property in Herne Bay is covered for sand mastic. Every job comes with our 12-month guarantee. 922 places in Kent are on our list, from the larger towns to small villages. Our Chelmsford page covers work nearby.
Postcode districts we cover here for sand mastic: CT6. If you need sand mastic at a property on High Street, Viscount Square and Market Street or anywhere close by, we can help. You will find Herne Bay on the A299 and B2205, which makes it straightforward to reach. We also cover Hunters Forstal (1 mile south-east), Eddington (1 mile south-west), Broomfield (1 mile south-east), Herne (1 mile south) and Beltinge (1 mile east). Larger places within reach include Canterbury (7 miles south), Margate (11 miles east), Ramsgate (12 miles east), Broadstairs (13 miles east), Whitstable (5 miles west) and Deal (15 miles south-east).
Around Herne Bay
Around Herne Bay, our work takes us to homes and buildings near Herne Bay High School, Queen's Head Public House and Curtis Wood and the streets around them. The nearest railway station is Herne Bay station, roughly 0.7 miles west of the centre. A little further out are Tankerton Castle (4.3 miles west) and Whitstable and Tankerton Hospital (3.6 miles west). Green spaces nearby include West Blean and Thornden Woods.
Common questions in Herne Bay
Can you do sand mastic in Herne Bay?
Yes, Herne Bay is within the area we cover. Our work covers London and the South East. Just ring 0345 464 0079 or drop us an email with a few details of the job, and we’ll give you a clear quote.
Does the coastal weather in Herne Bay affect outside sealant?
Coastal homes put outside sealant through more weather than inland ones, so the choice of sealant and the preparation matter even more. It’s worth checking the walls that face the sea first.
Are you an approved applicator?
Yes. We are an ARBOMaster approved applicator, which is run for the Arbo sealant brand.
How much does sand mastic cost in Herne Bay?
It depends on the job, so we quote each one individually. To get one, ring 0345 464 0079 or drop us an email with a short description of the job.
Can you replace silicone on a period window with sand mastic?
Often, yes. Once the silicone is out and the joint prepared we point it with sand mastic.
Can you do several jobs on one visit?
Yes. Several rooms, windows or areas can go on one quote.
Can you work on commercial sites?
Yes. We have worked for hotels, offices and other businesses.
Where are you based?
We work from Crawley. Our applicators cover Herne Bay, along with the rest of our area.