Kent · England
Sand Mastic in Hextable
We cover Hextable for traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old material cut out, joints cleaned and sealed neatly and every job guaranteed for a year.
- Draughts and rain around sash boxes
- Cracked mastic round a front door frame
- Window mastic to renew ahead of painting
Sand mastic for homes and businesses in Hextable
We renew sand mastic around sash windows and doors set in stone or brick. Out comes the old, loose mastic, and new mastic is applied and shaped by hand. If you are dealing with window mastic to renew ahead of painting and gaps round a timber door in stone or brick, we can put it right.
Houses in smaller places like Hextable can stand more in the open than those in a built-up town. That’s hard on the mastic around frames and sills.
You’re covered for a year from the day we finish. If anything isn’t right with it, call 0345 464 0079 or drop us an email.
- Where
- Hextable (BR8, DA2)
- Region
- Kent
- Guarantee
- A year, on every job
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Honest limits
To be straight with you, some problems need a different trade:
- Sash cords, weights and draught-proofing of the sashes
- Rotten sashes, sills or window boxes (a joiner’s job)
- Cracked or broken glass
Not sure which it is? You can call 0345 464 0079 or email us and we will tell you honestly.
Joints and surfaces we work on
- Timber door frames
- Brick reveals
- Period & listed homes
- Stone surrounds
- Sash and case windows
- Tenement windows
Common questions in Hextable
Do you cover smaller places like Hextable?
Yes. Hextable is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Do you work for landlords with property near Swanley station?
Yes. We work for landlords and agents as well as householders. You can ring 0345 464 0079 or drop us an email with the details for a clear quote.
Should I check with the council before work on a listed or conservation-area home?
Your local planning authority is the one to ask. They’ll tell you if consent is needed.
Can you do several jobs on one visit?
Yes, and it often makes sense. Combining jobs makes good use of the visit.
Do I need to be at home?
It depends on the job. For work indoors, someone needs to let us in, while outside work can sometimes be arranged differently.
Is there any odour?
There can be a smell while the sealant cures, which fades as it sets. Opening a window helps.
How long does sand mastic take?
It depends on the size of the job, but as a guide it takes a few hours for a single window, longer for several. We’ll tell you when we quote.
Can old silicone round a sash window be swapped for sand mastic?
Often, yes. With the silicone removed and the joint cleaned, sand mastic is applied by hand.
What sand mastic looks like in Hextable
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. Historic houses like Hall Place and Gardens (about 2.7 miles north) are a reminder that the area around Hextable has older buildings as well as new. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
In the older streets around St Peter, frames set in older brick or stone need a sealant that suits the wall as well as the frame. Rented homes near Swanley station change hands often, and any sash windows need sound mastic to keep draughts and rain out. Managing a site like Hextable Primary School? Then the mastic around its windows and doors needs looking after like any other building’s.
Hextable is about 3 miles south-west of Dartford, in Kent. For sand mastic in and around Hextable, it’s easy to get a quote: please ring 0345 464 0079 or send us an email. We’re based in Crawley and cover Kent. Hextable is one of 922 places in Kent where we work. There’s also a page for London, about 13 miles away.
Work in BR8 and DA2 is quoted and booked the same way as anywhere else. You will find streets such as Panter's, Southbank and Plantation Road, and we cover them all. You’ll find Hextable on the B258, so it’s easy for us to get to. Other places close to Hextable include Puddledock (1 mile north-west), Swanley Village (1 mile south-east), Stonehill Green (1 mile west), Joyden's Wood (1 mile north-west) and Wilmington (1 mile north). Larger places within reach include Dartford (3 miles north-east), Sevenoaks (9 miles south), Gravesend (9 miles east), Tonbridge (15 miles south), Northfleet (7 miles east) and Kings Hill (14 miles south-east).
Local landmarks in Hextable
In Hextable, that means homes and buildings near The Ship pub, Dartford Heath and Hextable School, among other places. For rail, the closest station is Swanley station, about 1.5 miles south-west. Well-known places in the area include Broadway Shopping Centre (3.4 miles north-west) and Dartford Library (2.6 miles north-east). Open spaces near Hextable include Wansunt Pit.
Nearby places to Hextable
What else we do in Hextable
The process
On the day, we look over the joints with you first. Surfaces next to the work are protected before any work begins. Most jobs take a few hours for a single window, longer for several. A visit to Hextable is planned like any other: the time, the access and where to park are agreed in advance. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- Each surround is checked first.
- We rake out the old mastic and clean the joint.
- We fill deep gaps so the new mastic is not too thick.
- We point the joint with sand mastic by hand.
- We finish the mastic to a tidy line.
How to prepare
- Mention any parking rules near the property
- Let us know about earlier repairs to the joints
- Mention any tricky access
Get a quote
Call for a quick quote, or email us if that is easier. Tell us about the joints that need doing and we will talk you through the work before giving you a price.
Read more
What the job involves on each surface
Timber door frames
Period doors in stone or brick openings are often pointed with sand mastic. The method is the same as for windows.
Brick reveals
Loose mastic comes out and deep gaps are packed before pointing.
Why deal with it now?
A silicone bead can be quicker, but on period stone or brick it often looks out of place. Sand mastic suits the building and finishes neatly against the masonry. In a smaller place like Hextable, 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.
The cost reflects the work involved, not guesswork. That is why we ask a few questions first and give you a clear quote before we start.
Why us?
- Over 20 years’ experience
- Sanitary silicone with an anti-fungal additive in wet areas
- Fully insured
- Any old sealant cut out fully, not covered over
Take a look at how sealant jobs are priced and customer reviews.
DIY sealant or a professional job?
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
Looking after it afterwards
Once the sealant has cured, a few habits help it last:
- Ask us before painting near the mastic
- Don’t run silicone over sand mastic
- Find out about consent before window work on a listed home
- Inspect the joints round the windows every year or so
Leave the new mastic unpainted, as traditional guidance advises. Ask us before any decorating around it.
Crumbling mastic lets rain into the joint. That water can reach the timber frame and the wall, so renewing it early is worth it.
How we quote for sand mastic
You’ll get a clear quote before any work starts. It takes into account:
- The amount of work
- Mould in or behind the old joints
- How many rooms, windows or areas are involved
- How easy the joints are to reach
Combining jobs into one visit normally makes better use of the time than several visits. We will give you a clear quote for the lot.
What we need to know
Photos by email are helpful but not essential. Try to tell us:
- Any previous sealing or DIY work
- The type of property
- How we’d reach the joints
- A few photos by email, if you can
For sand mastic in Hextable, call 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and we’ll agree the price before any work begins.