Kent · England
Sand mastic for sash & case windows in Hawley, Kent
Problem with your window and door surrounds in Hawley? We cut out the old, prepare the joints and apply the right sealant.
- Failed mastic on an exposed elevation
- Wind and rain getting in round a sash window
- Gaps where the frame meets the masonry
Sand mastic in Hawley
Fresh sand mastic forms a skin quite soon, but it takes longer to harden fully. Traditional guidance is not to paint over it and we will advise if you are redecorating. We work on stone surrounds, brick reveals and tenement windows, and common reasons people get in touch are old cement repairs round a window that have failed and draughts and rain around sash boxes.
In a village or hamlet like Hawley, older cottages and farmhouses often have timber windows set in stone or brick. Older buildings like these don’t always suit modern silicone, and sometimes a traditional sand mastic is the better choice.
Your job is guaranteed for a year, as with all our work.
- Place
- Hawley (DA2)
- Wider area
- Kent
- Guarantee
- A year, on every job
- Price
- A clear price before work begins
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Landlords, agents and businesses in Hawley
Whether it’s one flat or a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a one-year guarantee.
We work for letting agents and landlords as well as householders. Sealant work between tenants is a simple way to keep a property in good order.
Common questions in Hawley
Do you cover smaller places like Hawley?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
I let a flat near Farningham Road station. Can you help?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. Just phone 0345 464 0079 or email us with the address and what needs doing, and we will send you a clear quote.
Will there be a smell?
Sometimes, a little. It fades as the sealant cures, and ventilation helps.
Can you replace silicone on a period window with sand mastic?
Often, yes. With the silicone removed and the joint cleaned, sand mastic is applied by hand.
What information do you need?
Just the basics: where it is, what you’ve noticed and how we reach it. After that, simply call 0345 464 0079 or drop us an email.
Do I have to be there?
That depends on where the joints are. For work indoors, someone needs to let us in, and for outside work we’ll agree access with you when we book.
Do you take out the old sealant first?
Yes. We cut out all the old sealant and clean the joint before resealing.
What exactly is sand mastic?
A traditional pointing material made from sand and a linseed-oil-based binder for the joint between timber frames and masonry.
How the visit works
Before we leave, we go over the finished joints with you and tell you how long to leave it. The visit itself usually takes a few hours per window, depending on the condition of the joints, depending on how much there is to do. For a village or hamlet like Hawley, the journey is planned in advance: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- We look at the surrounds with you and agree the joints to renew.
- We remove the old, loose mastic.
- We pack any deep voids first.
- We apply the mastic by hand and shape it.
- The surface is finished to suit the stone or brick.
Preparing for the visit
- Try not to wet indoor joints just before the visit
- Keep pets and children clear of the area while we work
- Let us know about stairs, lifts or work at height
Getting a quote
We do not publish a price list. Instead, your job gets its own clear quote. To get started, phone 0345 464 0079 or drop us an email.
Related advice
How we quote for sand mastic
We quote each job individually. This is what makes a difference:
- How much old sealant there is and how hard it is to remove
- Whether the work is at height
- Any mould that needs treating
- Working hours on commercial sites
The cost depends on the size of the job, how much old material has to come out and access to the work. You’ll have a clear quote before any work starts, so you know where you stand.
What we need to know
When you contact us, these details help:
- A few photos by email, if you can
- What’s wrong with the joints now
- Whether it has been sealed before
- Access, such as stairs, a lift or height
Want a quote for sand mastic? Please ring 0345 464 0079 or drop us an email and tell us about the job. We will explain what we’d do and give you a clear quote before work begins.
Surface by surface
Tenement and terrace windows
Upper-floor windows need access planning. Let us know the floor and we’ll confirm access.
Timber door frames
Round a period front door, sand mastic gives the right look.
DIY versus a professional finish
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is.
A DIY attempt doesn’t rule out a professional job. We remove it and do the joint properly, so just mention it when you contact us.
What sand mastic looks like in Hawley
The South East is one of the drier parts of the UK, 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 3.3 miles north-west) are a reminder that the area around Hawley has older buildings as well as new. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic.
For site and facilities teams at buildings such as Sutton-At-Hone Church of England Primary School, larger buildings have plenty of frames, and the mastic around each one ages. For an older house near a landmark such as Church of St John the Baptist, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. For landlords with property near Farningham Road station, cracked sand mastic around sash windows lets in the draughts tenants complain about.
Hawley is about 1 mile south of Dartford, in Kent. If you need sand mastic in Hawley, it’s easy to get a quote: please phone 0345 464 0079 or drop us an email. We’re based in Crawley and cover Kent, Hawley included. Our area takes in 922 places across Kent, from the larger towns to small villages. Our London page covers work nearby (15 miles or so).
Here we cover the DA2 postcode area for sand mastic. If you need sand mastic at a property on Ash Road, May Road and Shirehall Road or a nearby road, our applicators can take on the job. Neighbouring places we cover for sand mastic include Clement Street (1 mile south-west), Sutton at Hone (1 mile south-east), Darenth (1 mile east), Dartford (1 mile north) and St Margarets (2 miles south-east). Within a short drive, we also cover Sevenoaks (10 miles south), Gravesend (7 miles east), Northfleet (5 miles east), Swanley (3 miles south-west), Kings Hill (13 miles south-east) and Swanscombe (3 miles north-east).
What’s near Hawley
In Hawley, that means homes and buildings near Darenth Country Park, Leigh Academy and The Four Lymes pub and the streets around them. The closest station to Hawley is Farningham Road station, about 1.5 miles south. Nearby you’ll also find Bluewater (2.4 miles north-east) and Darenth Park Hospital (1.7 miles north-east). Open spaces near Hawley include Wansunt Pit and Sawyers Lake.
Towns and villages near Hawley
Other services in Hawley
When something else is needed
It helps to know what we can’t do:
- Sashes that rattle, stick or won’t open
- Rotten sashes, sills or window boxes (a joiner’s job)
- Masonry that needs repairing
If in doubt, ring 0345 464 0079 or send us an email and we’ll say what we think.
Surfaces we seal
- Sash and case windows
- Timber door frames
- Period & listed homes
- Stone surrounds
- Brick reveals
- Tenement windows
Looking after it afterwards
Simple care keeps the joints in good condition. Our advice:
- Have rotten timber repaired before new mastic goes in
- Find out about consent before window work on a listed home
- Renew mastic before redecorating the windows
- Inspect the joints round the windows every year or so
Look at the mastic when you look over the windows. Catching cracks early keeps repairs small.
Renewing mastic before redecorating saves doing it twice. Paint over cracked mastic only covers it up.