Kent · England
Sand mastic for sash & case windows in Mountain Street, Kent
Sand mastic in Mountain Street from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Weathered mastic on the most exposed windows
- Window mastic to renew ahead of painting
- Silicone on a period window that looks wrong
Do you need sand mastic in Mountain Street?
Scraping and sanding before painting can loosen old mastic. Many people find it crumbling when they prepare the windows, which is a good time to renew it.
Most people get in touch after spotting one of these:
- Window mastic to renew ahead of painting
- Modern sealant on a period surround
- Gaps round a timber door in stone or brick
- Draughty sash windows at the surround
If you live in an older home near Church of St Mary, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
What your quote should include
- Who does the work, and how experienced they are
- What happens if the job turns out different
- Which colour the sealant will be
- What the cure time is
Sand mastic in Mountain Street
On many period windows, sand mastic looks right and suits the building. Newer frames usually get a flexible sealant instead and we’ll explain which is best for yours. If you’re dealing with cement or filler used on old window joints that has cracked and mastic worn away on windows facing the weather, we can help.
Around Mountain Street, many homes face open ground, so their windows and doors take the full weather. That exposure dries out and cracks the mastic around frames and sills faster.
Every job comes with a 12-month guarantee, wherever you are in Kent.
- Location
- Mountain Street (CT4)
- Region
- Kent
- Cover
- 12 months on all our work
- Price
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Aftercare tips
Good habits help new joints last longer. A few tips:
- Keep sills and gutters clear so water drains away
- Avoid heavy scraping on the mastic joint
- Ask us before painting near the mastic
- Avoid patching sand mastic with silicone
Don’t run silicone over the new mastic. If you see a crack, ask us to take a look rather than patching it.
Once mastic starts to crumble, rain gets in. It can soak into the frame and the surrounding masonry so early renewal protects both.
Leave it or put it right?
Cement-based fillers and modern sealants do not always suit a period surround. Sand mastic is the like-for-like choice, which can matter on listed and conservation-area homes. Around Mountain Street, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
A few things move the cost up or down: the old material and how easily it comes out, any mould to treat, and whether the work is at height. Your quote takes all of that into account.
Why book with us
- Sanitary silicone with an anti-fungal additive in wet areas
- Rated 4.9 stars on Google
- We are fully insured
- Tidy, careful work
See our cost guide and our reviews.
Honest limits
New sealant cannot fix everything, and we will tell you before we start. It will not solve:
- Sashes that rattle, stick or will not open
- Masonry that needs repairing
- Decayed frames that need repair
If you are not sure, just phone 0345 464 0079 or email us and we’ll give you a straight answer.
Surfaces we seal
- Timber door frames
- Sash and case windows
- Brick reveals
- Period & listed homes
- Tenement windows
- Stone surrounds
Towns and villages near Mountain Street
What else we do in Mountain Street
Windows and doors in Mountain Street
Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Rented homes near Chilham station change hands often, and older sash windows in a rental need their mastic kept sound to keep the weather out.
Mountain Street is about 6 miles south-west of Canterbury, in Kent. For sand mastic in and around Mountain Street, please phone 0345 464 0079 or send us an email for a quick quote. We cover Kent from our Crawley base. Mountain Street is one of 922 towns and villages in Kent where we work. There’s also a page for Chelmsford, roughly 40 miles from Mountain Street.
We work across the CT4 postcode area for sand mastic. Other places close to Mountain Street include Chilham (1 mile north-east), Godmersham (1 mile south), Old Wives Lees (1 mile north), Shottenden (2 miles north-west) and Bilting (2 miles south). Further out, we also cover Ashford (8 miles south-west), Canterbury (6 miles north-east), Sittingbourne (12 miles north-west), Folkestone (14 miles south-east), Whitstable (9 miles north) and Faversham (6 miles north-west).
Around Mountain Street
We work in homes and buildings around Woolpack Inn and Broadham Down. Mountain Street’s nearest station is Chilham station, about 0.8 miles north-east of the centre. Well-known places in the area include Kent and Canterbury Hospital (5.7 miles east) and Chilham Castle (less than half a mile north).
What the job involves on each surface
Stone surrounds
The stone is treated with care while raking out the old mastic.
Period and listed homes
Sand mastic is the like-for-like choice for many period homes. On listed buildings, check with your planning authority first.
Your questions about sand mastic in Mountain Street
Is Mountain Street in your area for sand mastic?
Yes, Mountain Street is within the area we cover. Our work covers London and the South East. Just ring 0345 464 0079 or send us an email with a few details of the job.
Is Mountain Street within the area you cover?
Yes, smaller places are covered as well as towns. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Can I do it myself?
Sometimes. Preparation is everything: all the old sealant out, and a clean, dry joint. If it doesn’t work out, we can redo it.
Which products do you use?
Each joint gets the product that suits it. Where it moves, gets wet or faces the weather makes a difference, and we will explain our choice.
Do the sealants smell?
Possibly a little. Any smell clears as the sealant cures.
How much does sand mastic cost in Mountain Street?
We don’t publish prices, because the cost depends on the job: its size, the old material, access and the product needed. You will get a clear quote before any work starts.
Do I need to be at home?
For indoor joints, yes, someone needs to let us in. Once we’ve agreed the job, you don’t need to watch us work.
Is sand mastic better than silicone for my windows?
For period timber windows in stone or brick, sand mastic is often the better fit. On modern frames, we’d normally use a flexible sealant, and we will explain why.
How it works
The work is kept neat and contained to the joints we are treating. Expect the work to take anything from a few hours to a full day, depending on how many windows, and we explain the cure time before we leave. For a village or hamlet like Mountain Street, the journey is planned in advance: 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 check the window surrounds and agree which joints need renewing.
- Old, loose mastic is raked out and the joint cleaned.
- Large voids are packed out first, so the mastic is not too thick.
- The mastic is mixed, pressed into the joint by hand and shaped.
- The finish is dressed so it sits neatly against the stone or brick.
How to prepare
- Tell us about any previous sealing or DIY attempts
- Plan for the work area to be out of bounds to pets and children
- Mention any sign-in or site rules at work premises
Getting a quote
If you are in Mountain Street and need sand mastic, call 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and you’ll get a clear quote before any work starts.
Read more
What affects the quote in Mountain Street
You’ll get a clear quote before any work starts. It’s based on:
- How much old sealant there is and how hard it is to remove
- Any mould that needs treating
- How many rooms, windows or areas are involved
- The type of sealant required
Instead of a standard rate, 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
You don’t need to know the technical terms. It helps if you can tell us:
- Whether it has been sealed before
- Photos by email, if that’s easy
- Any access issues, like height or stairs
- How many joints, rooms or windows are involved
Every job is quoted individually. Simply call 0345 464 0079 or email us and describe the job.