Kent · England
Sand mastic for sash & case windows in Loose, Kent
Traditional burnt sand mastic around sash and case windows and doors in stone and brick in Loose, with a one-year guarantee on every job. Ask us for a quote.
- Modern sealant on a period surround
- Mastic round period door frames that has failed
- Draughty sash windows at the surround
Sand mastic for homes and businesses in Loose
Sand mastic doesn’t last for ever, leaving gaps round the window. We rake it out and renew it so the surround looks right again. We work on stone surrounds, period & listed homes and timber door frames, and people most often call us about mastic round period door frames that has failed and gaps where the frame meets the masonry.
Outdoor sealant needs dry, clean surfaces, so work on frames around Loose is planned for dry weather. Tell us about access to every side of the house, including upper-floor windows.
Every job is covered by a 12-month guarantee.
- Place
- Loose (ME15, ME17)
- Region
- Kent
- Guarantee
- One year on every job
- Price
- A clear price before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
When to call us in Loose
Rain on the window surround works into any crack and pushes it out. Exposed elevations normally fail first.
These are the problems we’re asked about most:
- Crumbling sand mastic round a window
- Draughts and rain around sash boxes
- A silicone bead on a sash window that spoils the look
- Gaps round a timber door in stone or brick
If you let a flat or house near East Farleigh station, cracked sand mastic around sash windows lets in the draughts tenants complain about.
What your quote should include
- Is VAT in the price?
- How much experience the applicator has
- Are they insured?
- Whether the sealant suits the joint
Keeping the joints in good condition
How long the joints last depends on use and care. We suggest:
- Sort the mastic before the decorators arrive
- Go gently near the mastic when preparing windows
- Don’t run silicone over sand mastic
- Ask a joiner to look at soft timber first
Avoid painting over the new mastic, as traditional guidance advises. If you’re redecorating, ask us first.
Fine cracks show the mastic is starting to fail. It’s easier to renew it before it drops out.
Nearby places to Loose
More services for Loose
Common questions in Loose
Do you cover Loose for sand mastic?
Yes, Loose is within the area we cover. We work across London and the South East. Just ring 0345 464 0079 or drop us an email with a few details of the job.
Can you help a landlord with a rental near East Farleigh station?
Yes, rental work is part of what we do. You can ring 0345 464 0079 or drop us an email with the address and a few details, and we’ll give you a fixed price before any work starts.
Should I try DIY first?
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.
What is sand mastic?
It’s a mix of sand and a linseed-oil-based binder. It’s applied by hand and finished to sit neatly against the masonry.
Should I use sand mastic or silicone?
Sand mastic usually suits period timber windows best. Modern frames normally suit a flexible sealant.
Is it messy?
Very little: the area around the joints is protected first, and we clear up the old sealant and our materials before we leave.
Do I need to be at home?
If the work is inside, we need someone to let us in. After that, you can carry on with your day.
Are you insured?
Yes. We’re fully insured.
How the visit works
When we get to you, we compare the joints with what we discussed. If we find something unexpected, we talk it through with you first. After that, the work takes a few hours per window, depending on the condition of the joints. Somewhere as small as Loose, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- Each surround is checked first.
- The joint is raked out and cleaned.
- Large voids are packed out.
- New sand mastic is applied and shaped by hand.
- We finish the mastic to a tidy line.
Before we arrive
- On commercial sites, let us know about site rules
- Mention any tricky access
- Move anything stored near the joints
Ask for a quote
Want a quote for sand mastic? Please phone 0345 464 0079 or drop us an email with a few details. You’ll know what we plan to do, and what it will cost, before any work begins.
Related advice
Landlords, agents and businesses in Loose
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. Several properties can be quoted together.
If you manage several properties in or around Loose, jobs at different addresses can be quoted together. Send us the addresses and the work at each, and pictures by email help.
What sealant work can’t fix
We will always be straight with you, so here’s what sealant can’t fix:
- Sashes that rattle, stick or will not open
- Crumbling stone or brickwork round the window
- Decisions on consent for listed homes
If you are not sure, just call 0345 464 0079 or email us and we will give you a straight answer before booking.
Where we work in Loose
- Timber door frames
- Sash and case windows
- Tenement windows
- Period & listed homes
- Stone surrounds
- Brick reveals
What sand mastic looks like in Loose
Historic houses like Stoneacre (about 2.8 miles east) are a reminder that the area around Loose 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. London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Schools such as Loose Primary School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s. Homes close to Church of All Saints include some older properties, and the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Loose is about 2 miles south of Maidstone, in Kent. Our applicators cover sand mastic for homeowners, landlords and businesses in Loose. Loose is one of 922 towns and villages in Kent where we work. There’s also a page for London, roughly 32 miles from Loose.
Postcode districts we cover here for sand mastic: ME15 and ME17. We cover properties on Rosemount Close, Malthouse Hill and Old Loose Hill and the roads around them. If you are just outside Loose, we cover Boughton Green (1 mile south-east), Boughton Monchelsea (1 mile south-east), Linton (1 mile south), Park Wood (2 miles east) and Shepway (2 miles north-east). Further out, we also cover Sittingbourne (12 miles north-east), Sevenoaks (15 miles west), Royal Tunbridge Wells (13 miles south-west), Gravesend (15 miles north-west), Tonbridge (11 miles west) and Northfleet (15 miles north-west).
Landmarks near Loose
Typical jobs here are in homes near Cornwallis Academy and The Chequers Inn and the streets around them. The closest station to Loose is East Farleigh station, about 1.8 miles north-west. Other landmarks nearby include Kent Fire Brigade Museum (1.4 miles north) and The Mall Maidstone (2.4 miles north).
What happens if it’s left?
Gaps round a sash window let in rain and draughts. Left, water can reach the timber and the wall, so dealing with it now protects both. Around Loose, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
Doing several joints on one visit normally makes better use of the time than several visits, so tell us about everything that needs sealing. You’ll get one clear quote for the whole job.
Why Loose clients choose us
- Arbo and Everbuild products
- A 12-month guarantee on all work
- 4.9 on Google from 180+ five-star reviews
- Sanitary silicone with an anti-fungal additive in wet areas
See our cost guide and customer reviews.
Can I do it myself?
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.