Kent · England
Sand mastic for sash & case windows in Bockhanger, Kent
Sand mastic across Bockhanger and nearby, with every bit of old sealant taken out first and a 12-month guarantee.
- Mastic worn away on windows facing the weather
- Mastic round period door frames that has failed
- Gaps where the frame meets the masonry
Your questions about sand mastic in Bockhanger
Will you come out to Bockhanger?
Yes, Bockhanger is covered. We work across London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
I let a flat near Ashford International station. Can you help?
Yes, landlords and agents are among the people we work for. Just call 0345 464 0079 or drop us an email with the address and what needs doing, and we’ll send you a clear quote.
Where is Mr Mastic based?
We work from Crawley. Our applicators cover Bockhanger.
How long does the job take?
As a guide, most jobs take a few hours for a single window, longer for several. Larger jobs naturally take longer, and we’ll say how long yours will take.
Do you remove the old sealant?
Yes, every time. New silicone does not stick to old silicone, so the joint is cleaned back first.
Are you ARBOMaster approved?
Yes. We’re an ARBOMaster approved applicator, which is run for the Arbo sealant brand.
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.
What guarantee comes with the work?
There’s a 12-month guarantee on every job.
Sand mastic in Bockhanger, done properly
Sand mastic does not last for ever and gaps open up round the frame. Renewing it closes the gap and tidies the surround. We’re often asked to deal with draughts and rain around sash boxes and cement or filler used on old window joints that has cracked, on sash and case windows, tenement windows and period & listed homes.
In a smaller place like Bockhanger, some walls face open ground and catch the full force of the weather. That’s hard on the mastic around frames and sills.
All our work is covered by a one-year guarantee.
- Where
- Bockhanger (TN24, TN25)
- Wider area
- Kent
- Cover
- A year, on every job
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Why it’s worth doing now in Bockhanger
Replacing sash windows is a big decision for a period home, and in listed buildings it may need consent. Where the frames are in good order, new mastic seals the surround. In a smaller place like Bockhanger, wherever a wall is exposed, a failed outside joint is a real source of damp. Indoors, a failed seal lets water into floors and panels as it would anywhere.
Commercial jobs are quoted on the same basis as homes: the amount of work, how we reach it and what it needs, along with when we can work on site. Ask us for a quote and we’ll explain what it covers.
Why Bockhanger clients choose us
- Sanitary silicone with an anti-fungal additive in wet areas
- 180+ five-star Google reviews
- Full insurance on every job
- Quality sealants from Arbo and Everbuild
Read our cost guide and our reviews.
How the job changes by surface
Sash and case windows
The box of a sash and case window sits in the stone or brick opening. The gap round it is pointed with sand mastic.
Timber door frames
Door frames get knocked and soaked, so their mastic can fail sooner. We rake it out and renew it.
Frames and glazing around Bockhanger
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. Historic houses like Godinton House (about 2.1 miles west) are a reminder that the area around Bockhanger 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 Mary, the joint between an old wall and a newer frame is usually the first place rain gets in. For landlords with property near Ashford International station, cracked sand mastic around sash windows lets in the draughts tenants complain about.
Bockhanger is about 2 miles north of Ashford, in Kent. Across the TN24 area, our applicators can take on sand mastic. 922 places in Kent are on our list, large and small. We also work in Chelmsford, about 43 miles from Bockhanger.
We cover every part of the TN24 and TN25 postcode area for sand mastic. If you need sand mastic at a property on Park Road, York Road and Tudor Road or a nearby road, our applicators can take on the job. Other places close to Bockhanger include Kennington (1 mile north-east), Potters Corner (1 mile north-west), Godinton (2 miles south-west), Ashford (2 miles south) and Boughton Lees (2 miles north-east). Larger places within reach include Canterbury (12 miles north-east), Sittingbourne (14 miles north-west), Folkestone (14 miles south-east), Whitstable (15 miles north-east), Faversham (10 miles north) and Hythe (11 miles south-east).
Landmarks near Bockhanger
Locally, jobs take us to homes and businesses close to Towers School and Sixth Form Centre, Towers School and Sixth Form Centre and Ashford Warren and Hoads Wood and the streets around them. The nearest railway station is Ashford International station, roughly 1.5 miles south of the centre. Other landmarks nearby include County Square (1.2 miles south) and William Harvey Hospital (2.2 miles south-east). Open spaces near Bockhanger include Hatch Park.
How it works
You don’t need to clear the whole room or building, just the space around the work. Everything nearby is protected, and the job takes a few hours for a single window, longer for several in most cases. For a job in Bockhanger, we agree the time, the access and parking before the day. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- We look at the surrounds with you and agree the joints to renew.
- Old mastic and any loose material are raked out.
- Deep gaps are packed so the mastic sits at the right depth.
- We apply the mastic by hand and shape it.
- The surface is finished to suit the stone or brick.
Getting ready for the visit
- For indoor joints, keep the area dry beforehand if you can
- Tell us if parking is tricky
- Keep children and pets away from the work area
Ask for a quote
For a quick quote, get us on the phone, or email us if that is easier. Tell us about the joints that need doing and we will talk you through the work.
Related advice
How to look after the new joints
Good habits help new joints last longer. Our tips:
- Check the mastic when you check the paintwork
- Keep modern sealant off the mastic
- Check with your local planning authority if your home is listed
- Avoid heavy scraping on the mastic joint
Avoid painting over the new mastic, which is the traditional advice. If you are redecorating, ask us first.
An open joint round the box lets weather through. The longer it’s left, the more the joint opens as more mastic falls out.
Quotes for sand mastic in Bockhanger
Jobs vary more than people expect. What affects the quote:
- Access and height
- The old material and how stubborn it is
- The number and length of the joints
- The number of rooms or windows
We don’t show prices on the website, because each job is priced on what it involves. Call for a quick quote.
Asking for a 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
- Pictures of the joints, sent by email
- How we’d reach the joints
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is. Whenever you are ready, phone 0345 464 0079 or send us an email.
When something else is needed
We won’t take on work that will not last, so these are the limits:
- Decayed frames that need repair
- Crumbling stone or brickwork round the window
- Sash cords, weights and draught-proofing of the sashes
If in doubt, phone 0345 464 0079 or drop us an email and we’ll say what we think before booking.
Surfaces we seal
- Brick reveals
- Sash and case windows
- Period & listed homes
- Tenement windows
- Stone surrounds
- Timber door frames
Common problems we fix in Bockhanger
Shallow joints are a common cause. A thin layer doesn’t hold well so we make sure the new mastic is the right thickness.
It’s worth asking for a quote if you see:
- Draughts and rain around sash boxes
- Weathered mastic on the most exposed windows
- Gaps between timber frames and stone or brick
- Old cement repairs round a window that have failed
For site and facilities teams at buildings such as Phoenix Community Primary School, its window and door frames need their mastic kept sound, just like a home’s.
What to look for in a quote
- What guarantee comes with the work
- Are they insured?
- Whether VAT is included
- What the cure time is