Kent · England
Sand mastic for sash & case windows in Lower Cox Street, Kent
Window and door surrounds in Lower Cox Street need attention? We remove the old material, prepare the joints and seal them properly, and the work is guaranteed for a year.
- Gaps where the frame meets the masonry
- Mastic round period door frames that has failed
- Mastic dropping out of the joint
How the visit works
A visit follows a simple pattern: we check the joints, protect the area around them, do the work and tidy away. It generally takes a few hours per window, depending on the condition of the joints. In a small place like Lower Cox Street, access is usually the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We start by checking each surround and agreeing the joints to renew.
- The loose and crumbling mastic is raked out and the joint cleaned.
- We pack any deep gaps so the mastic sits at the right depth.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- We dress the surface so it sits neatly against the masonry.
Getting ready for the visit
- For indoor joints, keep the area dry beforehand if you can
- Keep children and pets away from the work area
- Mention if the joints have been sealed before
Ask for a quote
Want a quote for sand mastic? Please call 0345 464 0079 or send us an email with a few details. You’ll know what we plan to do, and what it will cost, before any work begins.
Related advice
Sand mastic in Lower Cox Street, done properly
Silicone on a period window often looks wrong and doesn’t suit the building. Sand mastic is the traditional choice, and we can replace one with the other. Common call-outs are for modern sealant on a period surround and gaps round a timber door in stone or brick, on period & listed homes, timber door frames and tenement windows.
Somewhere as small as Lower Cox Street, older homes often have timber frames set in stone or brickwork. Older buildings like these don’t always suit modern silicone, so the sealant has to be chosen to suit the building.
There’s a 12-month guarantee on every job.
- Location
- Lower Cox Street (ME14)
- Region
- Kent
- Guarantee
- One year on every job
- Quotes
- A clear price before we start
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Places near Lower Cox Street
More services for Lower Cox Street
Why act early in Lower Cox Street
Silicone might seem the quicker option, but it can look wrong on a period surround. Sand mastic is the traditional material and blends with the stone or brick. Around Lower Cox Street, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
There are no prices on our website, because the cost depends so much on the job itself. Call for a quick quote.
Why choose Mr Mastic in Lower Cox Street
- Rated 4.9 stars on Google
- Trusted Arbo and Everbuild sealants
- A 12-month guarantee on all work
- Sanitary silicone with an anti-fungal additive in wet areas
Take a look at what affects the cost or what customers say.
Work for landlords, hotels and businesses
We also work for property managers and facilities teams in Lower Cox Street and across Kent. We can quote a run of properties together.
In hotels, rooms out of use cost money, so the work can be planned room by room around your bookings where we can. We’ve worked in hotels as well as homes and businesses.
What sealant work cannot fix
Before booking, it’s worth knowing the limits too:
- Damaged stone surrounds
- Planning or listed building consent (your local planning authority decides)
- Sashes that need overhauling
If in doubt, call 0345 464 0079 or email us and we’ll say what we think before you book.
Surfaces we seal
- Period & listed homes
- Timber door frames
- Sash and case windows
- Stone surrounds
- Tenement windows
- Brick reveals
Looking after it afterwards
So the new joints stay in good condition:
- Ask the planning authority about consent for listed or conservation-area homes
- Sort the mastic before the decorators arrive
- Get any rot dealt with first
- Check the mastic when you check the paintwork
When preparing windows for paint, take care around the mastic. It can be damaged by heavy scraping.
Gaps round a sash box let in draughts and rain. Left, the gap tends to get bigger.
Surface by surface
Tenement and terrace windows
Where a building is shared, window work may involve neighbours, so check who is responsible first.
Brick reveals
Sand mastic is also used where timber frames meet brick. It gives a traditional finish.
What sand mastic looks like in Lower Cox 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. Historic houses like Stoneacre (about 4.6 miles south) are a reminder that the area around Lower Cox Street has older buildings as well as new. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
For an older house near a landmark such as Church of St Peter, the joint between an old wall and a newer frame is usually the first place rain gets in. If you let a flat or house near Bearsted station, older sash windows in a rental need their mastic kept sound to keep the weather out.
Lower Cox Street is about 4 miles south of Gillingham, in Kent. If you need sand mastic in Lower Cox Street, it’s easy to get a quote: please phone 0345 464 0079 or email us. We cover Kent from our Crawley base. Across Kent, we cover 922 places, Lower Cox Street among them. We also work in Chelmsford, around 29 miles away.
Work in ME14 works the same way as everywhere else we cover. We also cover Scragged Oak (1 mile north-west), Kemsley Street (1 mile north-west), Bredhurst (1 mile north-west), Dunn Street (1 mile north-west) and Lidsing (2 miles north-west). Further out, we also cover Maidstone (5 miles south-west), Sittingbourne (6 miles east), Gravesend (12 miles north-west), Faversham (13 miles east), Northfleet (13 miles north-west) and Minster (11 miles north-east).
Local landmarks in Lower Cox Street
Around Lower Cox Street, our work takes us to homes and buildings near White Horse Wood and the streets around them. The nearest railway station is Bearsted station, about 3.1 miles south. Well-known places in the area include Allington Castle (4.1 miles south-west) and KIMS hospital (2.8 miles south-west). Open spaces near Lower Cox Street include Burham Down and Detling Hill.
Lower Cox Street questions
Do you cover Lower Cox Street for sand mastic?
Yes. Our work covers London and the South East, and Lower Cox Street is part of that. You can ring 0345 464 0079 or send us an email and tell us what needs doing.
I let a flat near Bearsted station. Can you help?
Yes, landlords and agents are among the people we work for. Just phone 0345 464 0079 or send us an email with the address and what needs doing, and we will send you a clear quote.
Where is Mr Mastic based?
Mr Mastic is based in Crawley. We cover Lower Cox Street and the rest of Kent.
Do you remove the old sealant?
Yes, every time. New silicone does not stick to old silicone, so any old material comes out before anything new goes in.
Will you leave a mess?
Very little: the area around the joints is protected first, and we clear up the old sealant and our materials before we leave.
Can I do it myself?
It depends on the job. High-level, external movement and fire-rated joints are professional jobs.
Do I need to be at home?
If the work is inside, we need someone to let us in. After that, you can carry on with your day.
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.
Quotes for sand mastic in Lower Cox Street
We quote each job individually. This is what makes a difference:
- The product the joint needs
- Working hours on commercial sites
- Any mould that needs treating
- Whether old sealant or filler has to be cut out
What you pay reflects the work, not guesswork. That is why we ask about the job first.
Helping us quote
Before you ask for a quote, have a think about:
- Where the job is, and your postcode
- If it’s domestic, commercial or a hotel
- A few photos by email, if you can
- Access, such as stairs, a lift or height
Quotes start with a quick conversation. Describe the problem, the location and the size of the job. Whenever you are ready, phone 0345 464 0079 or drop us an email.