Kent · England
Sand mastic for sash & case windows in Fairseat, Kent
Professional sand mastic in and around Fairseat, with every bit of old sealant taken out first and a 12-month guarantee.
- Silicone on a period window that looks wrong
- Old cement repairs round a window that have failed
- Gaps where the frame meets the masonry
Sand mastic in Fairseat, done properly
Sand mastic suits most period window surrounds. On modern frames we’d normally use a flexible sealant, and we will talk through which suits your home. We work on timber door frames, period & listed homes and stone surrounds, and the jobs we see most are open joints round the window box and modern sealant on a period surround.
Somewhere as small as Fairseat, older homes often have timber frames set in stone or brickwork. Older buildings like these do not always suit modern silicone, and sometimes a traditional sand mastic is the better choice.
Each job carries a 12-month guarantee, large or small.
- Place
- Fairseat (TN15)
- Region
- Kent
- Guarantee
- A year, on every job
- Price
- A clear price before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Work for landlords, hotels and businesses
Hotels need rooms back in use, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
We also work for property managers and facilities teams in Fairseat and across Kent. We can quote a run of properties together, and we’re fully insured for the work.
What we are called out for in Fairseat
Most of it is simply age. Sand mastic is a maintenance item like any pointing, depending on exposure and upkeep.
Any of these means the joints need attention:
- Gaps between timber frames and stone or brick
- Wind and rain getting in round a sash window
- Mastic dropping out of the joint
- Patchy fillers round a sash window
If you look after a building such as Wrotham School, larger buildings have plenty of frames, and the mastic around each one ages.
Before booking anyone
- Who turns up on the day
- What happens if the job turns out different
- Are they insured?
- How the colour is chosen
Aftercare tips
How long the joints last depends on use and care. We suggest:
- Inspect the joints round the windows every year or so
- Get any rot dealt with first
- Clear gutters so water does not pour onto the windows
- Sort the mastic before the decorators arrive
Check the mastic when you check the paintwork. Small cracks are easier to deal with early.
Sound mastic protects the frame. Once it fails, water can sit against the timber and timber that stays wet can rot.
Places near Fairseat
Other services in Fairseat
Fairseat homes and the weather
The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. With historic houses such as Old Soar Manor (about 4.5 miles south) nearby, there’s older building stock in the area around Fairseat as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
If you let a flat or house near Borough Green & Wrotham station, older sash windows in a rental need their mastic kept sound to keep the weather out. Homes close to Holy Innocents include some older properties, and the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Fairseat is about 7 miles north-east of Sevenoaks, in Kent. Every kind of property in Fairseat can book us for sand mastic, old or new, large or small. Every job comes with our one-year guarantee. We cover 922 towns and villages across Kent. You can also see our page for London, about 22 miles away.
Work in TN15 works the same way as everywhere else we cover. That includes homes and businesses on Vigo Road and Platt House Lane and the roads around them. We also cover the places around Fairseat: Hodsoll Street (1 mile north), Labour-in-vain (1 mile south-west), Culverstone Green (1 mile north-east), Trottiscliffe (1 mile south-east) and Vigo Village (1 mile east). Further out, we also cover Maidstone (10 miles south-east), Dartford (9 miles north-west), Sevenoaks (7 miles south-west), Royal Tunbridge Wells (14 miles south), Gravesend (7 miles north) and Tonbridge (9 miles south).
Landmarks near Fairseat
Around Fairseat, our work takes us to homes and buildings near Trosley Country Park and the streets around them. The nearest railway station is Borough Green & Wrotham station, about 2.6 miles south. Well-known places in the area include Ightham Court (2.9 miles south-west) and Coldrum Long Barrow (2 miles east).
Your questions about sand mastic in Fairseat
Will you come out to Fairseat?
Yes, smaller places are covered as well as towns. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Is Fairseat in your area for sand mastic?
Yes. Our work covers London and the South East, and Fairseat is part of that. Just ring 0345 464 0079 or send us an email with a few details of the job, and we’ll give you a clear quote.
What exactly is sand mastic?
Sand plus a binder based on linseed oil. It’s built up in the joint by hand and shaped to suit the surround.
Can you do several jobs on one visit?
Of course. Doing several areas at once is normally more efficient, so mention them when you ask for a quote.
Can you match the sealant colour?
We’ll suggest a colour to suit the surroundings, from white and clear to greys and other shades. The choice depends on the product the joint needs.
I rent my home. Can I book you?
Of course. Ask your landlord first, and we can send them the quote if that helps.
What sealant do you use?
Each joint gets the product that suits it. Where it moves, gets wet or faces the weather makes a difference.
Do you take out the old sealant first?
Always. Sealing over old sealant is the main reason resealing fails early, so we never do it.
What happens on the day
There is not much for you to do on the day. Show us the job and we’ll take it from there. The job generally takes a few hours for a single window, longer for several, including the tidy-up. Somewhere as small as Fairseat, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We look at the surrounds with you and agree the joints to renew.
- We remove the old, loose mastic.
- Deep gaps are packed so the mastic sits at the right depth.
- We apply the mastic by hand and shape it.
- We dress the finish so it sits neatly against the masonry.
Preparing for the visit
- Try not to wet indoor joints just before the visit
- Tell us if parking is tricky
- On commercial sites, let us know about site rules
Get a quote
There’s no standard price list. Instead, we send you a clear quote for your job. To arrange one, call 0345 464 0079 or send us an email.
Read more
Honest limits
New sealant cannot fix everything, and we’ll tell you before we start. Sealant won’t put right:
- Whether work needs listed building consent
- Sashes that rattle, stick or won’t open
- Crumbling stone or brickwork round the window
If in doubt, ring 0345 464 0079 or drop us an email and we will say what we think.
What we seal
- Sash and case windows
- Stone surrounds
- Brick reveals
- Period & listed homes
- Tenement windows
- Timber door frames
How we quote for sand mastic
Some jobs are bigger than they look, and some smaller. The main factors:
- The number of rooms or windows
- Access and height
- Which sealant suits the joint
- Mould in or behind the old joints
What you pay reflects the work, not guesswork. That’s why we ask a few questions first and give you a clear price before work begins.
What we need to know
Before you ask for a quote, have a think about:
- Where the property is
- If someone has resealed it before
- The rough size of the job
- Access, such as stairs, a lift or height
For a quick quote, get us on the phone, or email us if that is easier. Describe what needs sealing and we’ll talk you through the work.
Different surfaces, different methods
Period and listed homes
Many older homes were built with sand mastic round the windows. If your home is listed, ask your local planning authority about consent.
Sash and case windows
The box of a sash and case window sits in the stone or brick opening. Sand mastic seals the joint round it.