Kent · England
Sand mastic for sash & case windows in Shelvin, Kent
Window and door surrounds in Shelvin need attention? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.
- Old cement repairs round a window that have failed
- Weathered mastic on the most exposed windows
- Gaps between timber frames and stone or brick
Sand mastic in Shelvin, done properly
A silicone bead around a sash window can look out of place and doesn’t suit the building. Sand mastic is the traditional choice and we can swap the silicone for it. Typical jobs include draughts and rain around sash boxes and mastic round period door frames that has failed, across tenement windows, period & listed homes and sash and case windows.
Outdoor sealant needs dry, clean surfaces, so work on frames around Shelvin is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
The work is covered for a year after we finish. If anything isn’t right with it, call 0345 464 0079 or drop us an email.
- Place
- Shelvin (CT4)
- Wider area
- Kent
- Guarantee
- 12 months on all our work
- Price
- A clear price before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Questions from Shelvin
Can you do sand mastic in Shelvin?
Yes, Shelvin 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 Shelvin within the area you cover?
Yes, we do. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
When will the new mastic be hard?
It forms a skin fairly soon, then hardens over a longer period. Timing depends on the weather and the joint.
Is it worth trying it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. Most DIY failures come from sealing over old material, wet joints or too much sealant.
Do I need permission for sand mastic on a listed building?
Yes, it’s worth checking. Your local planning authority can say if consent is needed for work on a listed home or in a conservation area.
How much does sand mastic cost in Shelvin?
There’s no set price, as it depends on the job: how much there is, what’s there now, how we reach it and what it needs. You’ll get a clear quote before we start.
Is it messy?
Not at all. The area is protected while we work and cleaned up afterwards.
Should I use sand mastic or silicone?
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.
Why act early in Shelvin
Not every draught comes from the sashes themselves. Open mastic joints round the box can let air in, and renewing the mastic closes them. Older cottages and farmhouses around Shelvin can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you are not sure whether it needs doing, phone 0345 464 0079 or send us an email and we’ll give you an honest view and a quote.
Why choose Mr Mastic in Shelvin
- Any old sealant cut out fully, not covered over
- Trusted Arbo and Everbuild sealants
- Over 20 years’ experience
- Homes, businesses and hotels
Take a look at our cost guide or what customers say.
Frames and glazing around Shelvin
London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. With historic houses such as Acrise Place (about 4 miles south-west) nearby, there’s older building stock in the area around Shelvin 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.
For landlords with property near Shepherds Well station, any sash windows need sound mastic to keep draughts and rain out.
Shelvin is about 6 miles north-west of Dover, in Kent. If you need sand mastic in Shelvin, it’s easy to get a quote: please ring 0345 464 0079 or send us an email. We are based in Crawley and cover Kent. Shelvin is one of 922 places in Kent where we work. We also work in Chelmsford, about 49 miles from Shelvin.
We work across CT4 for sand mastic. Whether your property is on Clints Lane and Shelvin Lane or a nearby road, we can help. We also cover Wootton (1 mile south-west), Denton (1 mile west), Lodge Lees (1 mile west), Breach (2 miles west) and Selsted (2 miles south). Larger places within reach include Ashford (14 miles west), Canterbury (8 miles north-west), Dover (6 miles south-east), Folkestone (7 miles south), Ramsgate (14 miles north-east) and Whitstable (13 miles north-west).
Near you in Shelvin
In Shelvin, that means homes and buildings near Coach House Hotel. The nearest railway station is Shepherds Well station, roughly 1.9 miles east of the centre. Nearby you’ll also find Buckland Hospital (5.9 miles south-east).
What happens on the day
We work through the job in order: protect, prepare, seal, tidy. Typically it takes anything from a few hours to a full day, depending on how many windows and we leave things clean and tidy. For a village or hamlet like Shelvin, the journey is planned in advance: 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 check each window surround and the condition of the joint.
- The joint is raked out and cleaned.
- Large voids are packed out.
- New sand mastic is applied and shaped by hand.
- The finish is dressed neatly.
Before we arrive
- Plan for the work area to be out of bounds to pets and children
- Let us know about parking restrictions
- Clear the area around the work
Getting a quote
If you are in Shelvin and need sand mastic, ring 0345 464 0079 or send us an email. Tell us what the problem is and where, and we’ll agree the price before any work begins.
Advice
Towns and villages near Shelvin
Also in Shelvin
How to look after the new joints
Simple care keeps the joints in good condition. Our advice:
- Clear gutters so water does not pour onto the windows
- Take care around the mastic when scraping paint
- Have rotten timber repaired before new mastic goes in
- Plan mastic work ahead of painting
When preparing windows for paint, take care around the mastic. Hard scraping can loosen it.
Crumbling mastic lets rain into the joint. That water can reach the timber frame and the wall so early renewal protects both.
Honest limits
We’ll always be straight with you, so here’s what sealant cannot fix:
- Decayed frames that need repair
- Planning or listed building consent (your local planning authority decides)
- Damaged stone surrounds
Not sure which it is? You can phone 0345 464 0079 or send us an email and we’ll tell you honestly before you book.
Joints and surfaces we work on
- Stone surrounds
- Sash and case windows
- Brick reveals
- Timber door frames
- Period & listed homes
- Tenement windows
Common problems we fix in Shelvin
Some old mastic was never deep enough. A thin layer does not hold well, which is why we pack deep voids first and get the depth right.
Signs it’s time to call us include:
- Open joints round the window box
- Modern sealant on a period surround
- Mastic worn away on windows facing the weather
- Patchy fillers round a sash window
Homes close to Church of St Martin include some older properties, and replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
What to look for in a quote
- How hidden problems are handled
- What the cure time is
- How much experience the applicator has
- How the joint is cleaned and prepared
Landlord and commercial work in Shelvin
We work for letting agents and landlords as well as homeowners. Resealing between tenancies keeps a property looking cared for.
Whether it’s one flat or a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
How the job changes by surface
Sash and case windows
Sash windows are where we do most sand mastic work. We renew the mastic round each box.
Tenement and terrace windows
Where a building is shared, window work may involve neighbours so it’s worth checking responsibilities.