Kent · England
Sand mastic for sash & case windows in Goodnestone, Kent
Sand mastic in Goodnestone from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Failed mastic on an exposed elevation
- Old sand mastic that has cracked, crumbled or fallen out
- Cracked mastic round a front door frame
How to look after the new joints
A little care helps the new joints last. Our advice:
- Plan mastic work ahead of painting
- Check the mastic when you check the paintwork
- Ask a joiner to look at soft timber first
- Leave the new mastic unpainted
Check the mastic when you check the paintwork. Catching cracks early keeps repairs small.
It’s best to renew mastic before painting the windows. Painting over failed mastic hides the problem for a while.
Sand mastic for homes and businesses in Goodnestone
Fresh sand mastic forms a skin quite soon but full hardening takes longer. Traditionally, sand mastic is left unpainted, so ask us before you decorate. Typical jobs include tired mastic found when preparing windows for paint and old cement repairs round a window that have failed, across period & listed homes, stone surrounds and tenement windows.
Outdoor sealant needs dry, clean surfaces, so work on frames around Goodnestone 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 there’s a problem with it, please call 0345 464 0079 or drop us an email.
- Where
- Goodnestone (CT3)
- Region
- Kent
- Cover
- 12 months on all our work
- Quotes
- A clear price before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
What happens on the day
When we get to you, we compare the joints with what we discussed. If anything is different, we explain it before carrying on. Most jobs then take a few hours per window, depending on the condition of the joints. Somewhere like Goodnestone needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- Each surround is checked first.
- We rake out the old mastic and clean the joint.
- Large voids are packed out.
- We point the joint with sand mastic by hand.
- The finish is dressed neatly.
Before we arrive
- Tell us about any previous sealing or DIY attempts
- Tell us about access, such as stairs, a lift or high-level joints
- Move anything stored near the joints
How to get a quote
To get a quote, phone 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. You will have a clear quote before work begins.
Read more
Surface by surface
Period and listed homes
Sand mastic is the like-for-like choice for many period homes. If your home is listed, ask your local planning authority about consent.
Tenement and terrace windows
Upper-floor windows need access planning. Let us know the floor and we’ll confirm access.
DIY versus a professional finish
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
A DIY attempt does not rule out a professional job. We remove it and do the joint properly.
Places near Goodnestone
More services for Goodnestone
What sand mastic looks like in Goodnestone
Historic houses like Goodnestone Park (about 0.4 miles south-west) are a reminder that the area around Goodnestone has older buildings as well as new. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic. Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Letting a property close to Adisham station? Then older sash windows in a rental need their mastic kept sound to keep the weather out. In the older streets around Church of the Holy Cross, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Goodnestone is about 7 miles east of Canterbury, in Kent. For sand mastic in and around Goodnestone, please ring 0345 464 0079 or send us an email for a quick quote. We cover Kent from our Crawley base, Goodnestone included. Goodnestone is one of 922 towns and villages in Kent where we work for sand mastic. We also work in Chelmsford, around 47 miles away.
Postcode districts we cover here for sand mastic: CT3. Local streets include The Street, Saddlers Hill and Fitzwalters Meadow, all of which we cover. Close by, we work in Chillenden (1 mile south-east), Twitham (1 mile north), Well Head (1 mile north), Ratling (1 mile south-west) and Staple (2 miles north-east). Within a short drive, we also cover Canterbury (7 miles west), Margate (11 miles north-east), Dover (8 miles south), Folkestone (12 miles south), Ramsgate (10 miles north-east) and Broadstairs (12 miles north-east).
Landmarks near Goodnestone
Around Goodnestone, our work takes us to homes and buildings near The Fitzwalter Arms and the streets around them. The closest station to Goodnestone is Adisham station, about 1.5 miles west of the centre. Nearby you will also find St Martins Hospital (5.7 miles west).
For landlords and businesses
Failed sealant is one of the commonest items on a check-out report, and it’s quick to put right between tenancies. We can quote for more than one property at once.
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
What happens if it’s left?
New sash windows are a major, costly change, and in listed buildings it may need consent. If the frames are sound, renewing the mastic deals with gaps and draughts at the surround. In a small place like Goodnestone, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
No two jobs are quite the same, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all make a difference.
Why book with us
- 4.9 on Google from 180+ five-star reviews
- We leave the area clean and tidy
- Experience in homes, commercial sites and hotels
- Anti-fungal sanitary silicone in wet areas
See our cost guide or our reviews.
When to call us in Goodnestone
Decorating can disturb tired mastic. It’s often found when windows are being prepared for paint.
Most people get in touch after spotting something like this:
- Crumbling sand mastic round a window
- Draughty sash windows at the surround
- Failed mastic on an exposed elevation
- Gaps between timber frames and stone or brick
For site and facilities teams at buildings such as Goodnestone Church of England Primary School, the mastic around its windows and doors needs looking after like any other building’s.
Questions to ask before you book
- What insurance they hold
- What guarantee comes with the work
- What happens if they find a problem under the old sealant
- What the quote includes, VAT included or not
FAQs for Goodnestone
Do you cover Goodnestone for sand mastic?
Yes. We work across London and the South East, and Goodnestone is part of that. Just call 0345 464 0079 or drop us an email with a few details of the job, and we will give you a clear quote.
Do you cover smaller places like Goodnestone?
Yes, Goodnestone is covered. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
What does sand mastic cost?
Every job is different, so each one gets its own quote. For a quick quote, ring 0345 464 0079 or drop us an email with a short description of the job.
Where are you based?
Our base is Crawley, with over 20 years’ experience. We work across South East England, London and Scotland.
Can tenants book the work?
Of course. Check with your landlord; we can send the quote to them too.
How long does the job take?
It depends on the size of the job, but as a guide it takes anything from a few hours to a full day, depending on how many windows. We will give you a better idea when we quote.
Can I add another job to the visit?
Of course. Combining jobs makes good use of the visit, so mention them when you ask for a quote.
Is it worth trying it myself?
Some simple jobs can be done by a careful DIYer. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.