Kent · England
Sand mastic for sash & case windows in Puddledock, Kent
Sand mastic in Puddledock from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Crumbling sand mastic round a window
- Patchy fillers round a sash window
- Draughty sash windows at the surround
How it works
When we arrive, we start by going over the job with you, so there are no surprises. We protect the surfaces around the joints before any work begins. The work normally takes a few hours per window, depending on the condition of the joints. Somewhere like Puddledock needs a little journey planning: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- We check each window surround and the condition of the joint.
- The joint is raked out and cleaned.
- We fill deep gaps so the new mastic is not too thick.
- We point the joint with sand mastic by hand.
- The finish is dressed neatly.
How to prepare
- Clear the area around the work
- Plan for the work area to be out of bounds to pets and children
- For business premises, tell us about site rules or sign-in
How to get a quote
Getting a quote is simple: let us know the job and the location. Photos by email help us understand the job, and we will take it from there.
Related advice
How we handle sand mastic in Puddledock
A silicone bead around a sash window can look out of place and is not always the right material. Sand mastic is the traditional choice and we can swap the silicone for it. We work on timber door frames, sash and case windows and period & listed homes, and common reasons people get in touch are cement or filler used on old window joints that has cracked and failed mastic on an exposed elevation.
Homes in small places like Puddledock often stand in the open, with little to shelter their windows from wind and rain. Exposed frames and sills lose their mastic sooner than sheltered ones.
Big or small, it’s backed by our 12-month guarantee in Puddledock and across Kent.
- Place
- Puddledock (DA2, BR8)
- Region
- Kent
- Guarantee
- A year, on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Questions from Puddledock
Is Puddledock in your area for sand mastic?
Yes, Puddledock is within the area we cover. We work across London and the South East. You can call 0345 464 0079 or email us and let us know what needs doing, and we will give you a clear quote.
Can you help a landlord with a rental near Swanley station?
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 will give you a clear quote.
Do you work for hotels and businesses?
Yes. We work in offices, washrooms, hotels and other commercial premises. Working times can be discussed when we quote.
What does sand mastic cost?
The cost depends on the size of the job, access and how much old sealant has to come out. Call for a quick quote and we will talk you through it.
What sealant do you use?
Quality sealants from brands including Arbo and Everbuild, picked for each joint. We will tell you what we’re using and why.
Can I do it myself?
It depends on the job. High-level, external movement and fire-rated joints are professional jobs.
Do you take out the old sealant first?
Yes. All of the old material is cut out and the joint cleaned before resealing.
Do I need permission for sand mastic on a listed building?
Speak to your local planning authority before work starts. Like-for-like sand mastic is often the preferred finish, but they decide.
Towns and villages near Puddledock
Other services in Puddledock
Quotes for sand mastic in Puddledock
You’ll get a clear quote before any work starts. It takes into account:
- Whether old sealant or filler has to be cut out
- How many areas need sealing
- The type of sealant required
- Whether there’s mould to deal with
Some things make a job bigger or smaller: the old material and how easily it comes out, any mould to treat, and whether the work is at height. We take all of that into account in your quote.
What to tell us for a quote
Photos help, but a description is a good start. Please mention:
- What’s wrong with the joints now
- If it’s domestic, commercial or a hotel
- Photos by email, if that’s easy
- How we’d reach the joints
If you’re in Puddledock and need sand mastic, call 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and you will get a clear quote before work begins.
What happens if it’s left?
A silicone bead can be quicker, but it can look wrong on a period surround. Sand mastic is the traditional material and blends with the stone or brick. In a small place like Puddledock, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
Instead of a standard rate, we look at what your job involves: how many joints, what’s in them now and how we reach them. You will know the price before we begin.
Why Puddledock clients choose us
- Anti-fungal silicone where joints get wet
- Every job guaranteed for a year
- Fully insured
- Homes, businesses and hotels
Take a look at what affects the cost or what customers say.
Signs you need sand mastic in Puddledock
Over the years, sand mastic weathers. It hardens, cracks and starts to come away from the frame or the masonry.
Common reasons people contact us include:
- Wind and rain getting in round a sash window
- Weathered mastic on the most exposed windows
- Mastic that needs renewing before redecorating
- Old sand mastic that has cracked, crumbled or fallen out
Rented homes near Swanley station change hands often, and cracked sand mastic around sash windows lets in the draughts tenants complain about.
What your quote should include
- How the colour is chosen
- Whether VAT is included
- Whether all the old sealant comes out first
- What happens if the job turns out different
How to look after the new joints
Looking after new joints is easy:
- Go gently near the mastic when preparing windows
- Ask a joiner to look at soft timber first
- Clear gutters so water doesn’t pour onto the windows
- Ask the planning authority about consent for listed or conservation-area homes
Don’t touch or press the mastic while it hardens. It forms a skin fairly soon but needs longer to fully harden.
It’s best to renew mastic before painting the windows. Painting over failed mastic hides the problem for a while.
What we cannot put right
Before you book, it’s worth knowing the limits:
- Planning or listed building consent (your local planning authority decides)
- Timber that has rotted
- Sashes that need overhauling
If in doubt, call 0345 464 0079 or send us an email and we’ll say what we think.
Joints and surfaces we work on
- Tenement windows
- Brick reveals
- Sash and case windows
- Stone surrounds
- Timber door frames
- Period & listed homes
DIY versus a professional finish
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
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, then guaranteed for a year.
Frames and glazing around Puddledock
With historic houses such as Hall Place and Gardens (about 2.2 miles north) nearby, there’s older building stock in the area around Puddledock as well as newer homes. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic. 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.
For site and facilities teams at buildings such as Hextable Primary School, larger buildings have plenty of frames, and the mastic around each one ages. For an older house near a landmark such as St Peter, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Puddledock is about 1 mile north of Swanley, in Kent. Puddledock gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Our Kent coverage runs to 922 places, Puddledock among them. There’s also a page for London, roughly 13 miles from Puddledock.
Here we cover the DA2 and BR8 postcode area for sand mastic. Other places close to Puddledock include Hextable (1 mile south-east), Stonehill Green (1 mile south-west), Joyden's Wood (1 mile north), Wilmington (1 mile north-east) and Swanley Village (1 mile south-east). Within a short drive, we also cover Dartford (3 miles north-east), Sevenoaks (9 miles south), Gravesend (9 miles east), Northfleet (7 miles east), Kings Hill (14 miles south-east) and Swanscombe (5 miles north-east).
What’s near Puddledock
Typical jobs here are in homes near Dartford Heath, The Ship pub and Hextable School. Puddledock’s nearest station is Swanley station, roughly 1.8 miles south. A little further out are West Hill Hospital (2.5 miles north-east) and Eynsford Castle (3.6 miles south-east). The countryside around Puddledock includes Wansunt Pit and Summer Hill.