Kent · England
Sand mastic for sash & case windows in Westwood, Kent
Sand mastic across Westwood and nearby, with old sealant always removed completely and a one-year guarantee.
- Failed mastic on an exposed elevation
- Open joints round the window box
- Draughty sash windows at the surround
Leave it or put it right?
Silicone might seem the quicker option, but it can look wrong on a period surround. Sand mastic is the traditional material and finishes neatly against the masonry. In a small place like Westwood, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
The cost reflects the work involved, not guesswork. That is why we ask a few questions first and agree the price before starting.
Why book with us
- Rated 4.9 stars on Google
- Tidy, careful work
- Arbo and Everbuild products
- Every job guaranteed for a year
Take a look at what affects the cost and what customers say.
Sand mastic for homes and businesses in Westwood
Sand mastic has long been used to fill the joint between timber frames and masonry. It’s made from sand and a linseed-oil-based binder, applied by hand. On older homes, it suits the building far better than silicone. If you’re dealing with mastic worn away on windows facing the weather and gaps between timber frames and stone or brick, we can help, on tenement windows, sash and case windows and brick reveals alike.
Mastic can only go onto a dry, clean joint, so window work in Westwood is booked around the forecast. Let us know about access to all the frames, upstairs ones included.
You’re covered for a year from the day we finish. If anything isn’t right with it, phone 0345 464 0079 or send us an email.
- Location
- Westwood (CT4)
- Wider area
- Kent
- Guarantee
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Nearby places to Westwood
Other services in Westwood
Landlord and commercial work in Westwood
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
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.
Different surfaces, different methods
Tenement and terrace windows
Tenements and terraces often have many sash windows with ageing mastic. We can do one window or several.
Sash and case windows
A sash window’s box frame sits in the masonry opening. The gap round it is pointed with sand mastic.
Westwood homes and the weather
With historic houses such as Acrise Place (about 4.9 miles south) nearby, there’s older building stock in the area around Westwood as well as newer homes. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic. 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.
For landlords with property near Bekesbourne station, cracked sand mastic around sash windows lets in the draughts tenants complain about. If you live in an older home near Church of St Peter and St Paul, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Westwood is about 5 miles south of Canterbury, in Kent. Anywhere in CT4, our applicators can take on sand mastic. Across Kent, we cover 922 places, and Westwood is one of them. Our Chelmsford page covers work nearby (45 miles or so).
We cover every part of the CT4 postcode area for sand mastic and the streets around it. We also cover the places around Westwood: Marley (1 mile east), Heart's Delight (2 miles east), Bishopsbourne (2 miles north-east), Kingston (2 miles north-east) and Derringstone (2 miles east). Within a short drive, we also cover Ashford (11 miles south-west), Canterbury (5 miles north), Dover (10 miles south-east), Folkestone (9 miles south), Whitstable (11 miles north) and Deal (13 miles east).
Local landmarks in Westwood
We work in homes and buildings around Jumping Downs. The closest station to Westwood is Bekesbourne station, roughly 4.1 miles north. Nearby you will also find Canterbury Castle (5 miles north) and Kent and Canterbury Hospital (4.2 miles north).
When something else is needed
In fairness, some problems need a different trade:
- Timber that has rotted
- Sash cords, weights and draught-proofing of the sashes
- Whether work needs listed building consent
If you’re not sure, just ring 0345 464 0079 or send us an email and we will give you a straight answer before booking.
Joints and surfaces we work on
- Sash and case windows
- Stone surrounds
- Timber door frames
- Tenement windows
- Brick reveals
- Period & listed homes
How the visit works
When we get to you, we compare the joints with what we discussed. If we find something unexpected, we talk it through with you first. Most jobs then take a few hours per window, depending on the condition of the joints. Somewhere like Westwood 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.
- We rake out the old mastic and clean the joint.
- Deep voids are packed so the mastic is the right thickness.
- We mix the sand mastic and apply it by hand, shaping it to the joint.
- The finish is dressed so it sits neatly against the stone or brick.
Before we arrive
- Move anything stored near the joints
- Tell us about any previous sealing or DIY attempts
- On commercial sites, let us know about site rules
Get a quote
There’s no standard price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To get started, ring 0345 464 0079 or email us.
Related advice
What affects the cost of sand mastic
Jobs vary more than people expect. The main factors:
- Whether there’s mould to deal with
- The type of sealant required
- The old material and how stubborn it is
- The number and length of the joints
Instead of a standard rate, we price the job in front of us: the amount of work, the old material and the access. The price is agreed before we begin.
What to tell us for a quote
Before you ask for a quote, have a think about:
- The problem you’ve noticed
- The rough size of the job
- Where the property is
- Whether it has been sealed before
For sand mastic in Westwood, ring 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and you’ll get a clear quote before we start.
Looking after it afterwards
To keep the joints looking good and working properly:
- Have rotten timber repaired before new mastic goes in
- Ask us before painting near the mastic
- Inspect the joints round the windows every year or so
- Plan mastic work ahead of painting
Avoid sealing over the mastic with silicone. If you see a crack, ask us to take a look rather than patching it.
It’s best to renew mastic before painting the windows. Paint over cracked mastic only covers it up.
Common questions in Westwood
Do you cover Westwood for sand mastic?
Yes. Our work covers London and the South East, and Westwood is part of that. You can phone 0345 464 0079 or send us an email and let us know what needs doing.
Is Westwood within the area you cover?
Yes, we do. Our work covers London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
What do you put in the joint?
Each joint gets the product that suits it. Where it moves, gets wet or faces the weather makes a difference.
Do I have to be there?
For indoor joints, yes, someone needs to let us in. Once we have agreed the job, you do not need to watch us work.
Can sand mastic be painted?
The usual advice is to leave sand mastic unpainted. Ask us before you decorate around it and we will advise.
Can you work on commercial sites?
Yes. We work in offices, washrooms, hotels and other commercial premises, as well as homes. Working times can be discussed when we quote.
Which is right for my windows, sand mastic or modern sealant?
Sand mastic normally suits period timber windows best. On modern frames, we’d normally use a flexible sealant, and we will explain why.
Can I add another job to the visit?
Yes. Just list everything you need and you will get one quote.