Medway · England
Lidsing Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homes and businesses in Lidsing and across Medway. Fully insured, ARBOMaster approved and guaranteed for a year.
- Cement or filler used on old window joints that has cracked
- Mastic round period door frames that has failed
- Failed mastic on an exposed elevation
How we handle sand mastic in Lidsing
Silicone on a period window often looks wrong and does not suit the building. Sand mastic is the traditional choice and we can swap the silicone for it. If you have cracked mastic round a front door frame and a silicone bead on a sash window that spoils the look, we can help, on tenement windows, sash and case windows and timber door frames alike.
Around Lidsing, many homes face open ground, so their windows and doors take the full weather. Exposed frames and sills lose their mastic sooner than sheltered ones.
Our work is backed for twelve months, in Lidsing and everywhere else we cover.
- Place
- Lidsing (ME7)
- Wider area
- Medway
- Cover
- One year on every job
- Price
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Surface by surface
Timber door frames
A neat sand mastic joint round a front door suits a period home.
Sash and case windows
A sash window’s box frame sits in the masonry opening. Sand mastic seals the joint round it.
Why it’s worth doing now in Lidsing
If you’re redecorating, renew the mastic first. Paint over cracked mastic will not stop the gaps and traditional guidance is to leave the new mastic unpainted. In a small place like Lidsing, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
Every job is a little different, so each one gets its own quote. Size, access and the product the joint needs all play a part.
Why Lidsing customers choose us
- A 12-month guarantee on all work
- We leave the area clean and tidy
- Anti-fungal silicone where joints get wet
- ARBOMaster approved applicator
Take a look at how sealant jobs are priced and customer reviews.
Nearby places to Lidsing
Also in Lidsing
What we cannot put right
Some problems need a builder, plumber or other trade rather than us:
- Sashes that rattle, stick or will not open
- Damaged stone surrounds
- Putty and glazing repairs
If in doubt, phone 0345 464 0079 or drop us an email and we’ll say what we think before booking.
Surfaces we seal
- Stone surrounds
- Tenement windows
- Brick reveals
- Timber door frames
- Period & listed homes
- Sash and case windows
Lidsing homes and the weather
Historic houses like Restoration House (about 4.7 miles north-west) are a reminder that the area around Lidsing 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. 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.
For an older house near a landmark such as Church of St Peter, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. Schools such as Swingate Primary School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s.
Lidsing is about 2 miles south-east of Chatham, in Medway. From the centre of Lidsing to the outskirts, we cover sand mastic for every kind of property. Across Medway, we cover 68 places, and Lidsing is one of them. For nearby work, see our Chelmsford page.
Work in ME7 is quoted and booked the same way as anywhere else. Other places close to Lidsing include Dunn Street (1 mile south-east), Bredhurst (1 mile east), Lordswood (1 mile north-west), Kemsley Street (1 mile east) and Scragged Oak (1 mile south-east). We also work in nearby towns such as Gillingham (3 miles north), Rochester (5 miles north-west), Rainham (3 miles north-east), Strood (6 miles north-west), Luton (3 miles north) and Twydall (3 miles north).
What’s near Lidsing
Typical jobs here are in homes near South Wood, The Harrow pub and Greenacre Academy, among other places. The closest station to Lidsing is Rainham (Kent) station, about 3.3 miles north-east. Well-known places in the area include Allington Castle (3.3 miles south-west) and Medway megaliths (2.8 miles west). Open spaces near Lidsing include Boxley Hills and Burham Down.
Should I try it myself first?
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions.
If you’ve already had a go yourself, that is fine. We cut it out and start again.
What happens on the day
There isn’t much for you to do on the day. Show us the job and we’ll take it from there. The job generally takes anything from a few hours to a full day, depending on how many windows, including the tidy-up. Somewhere as small as Lidsing, 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.
- The finish is dressed neatly.
Before we arrive
- Let us know about stairs, lifts or work at height
- For business premises, tell us about site rules or sign-in
- Mention any leaks or damp you’ve noticed
How to get a quote
Want a quote for sand mastic? Please call 0345 464 0079 or email us with a few details. You will know what we plan to do, and what it will cost, before any work begins.
Read more
What we’re called out for in Lidsing
Scraping and sanding before painting can loosen old mastic. Many people find it crumbling when they prepare the windows, which is a good time to renew it.
It’s worth asking for a quote if you see:
- Draughty sash windows at the surround
- Weathered mastic on the most exposed windows
- Patchy fillers round a sash window
- Mastic dropping out of the joint
Letting a property close to Rainham (Kent) station? Then older sash windows in a rental need their mastic kept sound to keep the weather out.
Before booking anyone
- What the quote includes, VAT included or not
- Is the old sealant removed completely?
- What happens if the job turns out different
- What product goes in the joint
Keeping the joints in good condition
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Ask us before painting near the mastic
- Avoid heavy scraping on the mastic joint
- Clear gutters so water does not pour onto the windows
- Renew mastic before redecorating the windows
Avoid painting over the new mastic, as traditional guidance advises. Ask us before any decorating around it.
Fine cracks show the mastic is starting to fail. Renewing it then is simpler than waiting until it falls out.
Common questions in Lidsing
I let a flat near Rainham (Kent) station. Can you help?
Yes, rental work is part of what we do. Just ring 0345 464 0079 or send us an email and tell us about the property, and we’ll give you a clear price.
Is Lidsing within the area you cover?
Yes, we do. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
How long does sand mastic take?
That depends on how much there is to do, but most jobs take a few hours per window, depending on the condition of the joints. We’ll give you a better idea when we quote.
Where do you work from?
Our base is in Crawley, West Sussex, and we work across South East England, London and Scotland.
Can I do 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.
Is it possible to paint over sand mastic?
It’s traditionally left unpainted, as guidance on traditional windows advises. Talk to us before any painting near it.
Will you leave a mess?
No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.
Do I need permission for sand mastic on a listed building?
Yes, it’s worth checking. Your local planning authority can say if consent is needed for listed or conservation-area properties.