Thurrock · England
Sand mastic for sash & case windows in Purfleet-on-Thames, Thurrock
Sand mastic across Purfleet-on-Thames and nearby, with old sealant always removed completely and a 12-month guarantee.
- Draughty sash windows at the surround
- Weathered mastic on the most exposed windows
- Cement or filler used on old window joints that has cracked
Sand mastic in Purfleet-on-Thames, done properly
Burnt sand mastic is a traditional material blends with stone and brick surrounds. It’s a good fit for period properties, where modern sealant can look out of place. We are often asked to deal with tired mastic found when preparing windows for paint and gaps between timber frames and stone or brick, across period & listed homes, tenement windows and stone surrounds.
In smaller places like Purfleet-on-Thames, homes range from older cottages to newer houses, with windows to match: timber, uPVC and aluminium. The right sealant depends on the frame and on what it sits in.
Our work is backed for twelve months, in Purfleet-on-Thames and everywhere else we cover.
- Where
- Purfleet-on-Thames (RM19, RM20)
- Wider area
- Thurrock
- Cover
- 12 months on all our work
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Landlord and commercial work in Purfleet-on-Thames
Whether it’s one flat or a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a 12-month guarantee.
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance that we can handle for you.
Different surfaces, different methods
Timber door frames
A neat sand mastic joint round a front door suits a period home.
Brick reveals
An open joint at a brick reveal lets weather in. New mastic seals the gap.
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 chosen for how the joint moves and where it is, and the work is guaranteed for a year.
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Common questions in Purfleet-on-Thames
Do you work for landlords with property near Purfleet station?
Yes, we work for letting agents and landlords. You can phone 0345 464 0079 or email us with the address and a few details, and we’ll give you a fixed price before work begins.
Can you do sand mastic in Purfleet-on-Thames?
Yes, Purfleet-on-Thames is within the area we cover. Our work covers London and the South East. You can ring 0345 464 0079 or drop us an email and let us know what needs doing.
Can new sealant go over the old?
No. Fresh sealant does not stick to old sealant, and anything trapped underneath, including mould and water, stays there. We remove it all first.
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 will agree access with you when we book.
When will the new mastic be hard?
A skin forms quite soon, but full hardening takes longer. We will explain what to expect before we leave.
Do you do commercial work?
Yes, regularly. Larger jobs can be planned room by room or area by area to suit the site.
Can I paint the new mastic?
It’s traditionally left unpainted, which is what traditional guidance recommends. Ask us before decorating.
Is it possible to take out silicone and use sand mastic instead?
Yes, we do this often. The old silicone has to come out completely so the mastic can sit properly.
What affects the cost of sand mastic
We quote each job individually. This is what makes a difference:
- The old material and how stubborn it is
- Working hours on commercial sites
- The product the joint needs
- Access and height
We don’t show prices on the website, because the cost depends so much on the job itself. Call for a quick quote and we will talk you through it.
Asking for a quote
When you contact us, these details help:
- Whether it’s a home or a business
- The rough size of the job
- A few pictures by email, if you can
- What the problem is, such as mould, gaps, leaks or cracking
We don’t publish a price list. Instead, we send you a clear quote for your job. To arrange one, call 0345 464 0079 or drop us an email.
How the visit works
We keep the work tidy and contained to the joints we are treating, so you can carry on as normal. Expect the work to take anything from a few hours to a full day, depending on how many windows, and we tell you how long to leave it before we go. For a job in Purfleet-on-Thames, we agree the time, the access and parking before the day. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- We check each window surround and the condition of the joint.
- We rake out the old mastic and clean the joint.
- We fill deep gaps so the new mastic isn’t too thick.
- We point the joint with sand mastic by hand.
- We finish the mastic to a tidy line.
Preparing for the visit
- Clear items away from the joints we’re working on
- Mention any leaks or damp you’ve noticed
- Tell us if parking is tricky
Ask for a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and email photos if that is easy.
Read more
Frames and glazing around Purfleet-on-Thames
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. Historic houses like Rainham Hall (about 3.1 miles north-west) are a reminder that the area around Purfleet-on-Thames 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.
Homes close to St Stephen's Church include some older properties, and the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. Letting a property close to Purfleet station? Then any sash windows need sound mastic to keep draughts and rain out.
Purfleet-on-Thames is about 3 miles north of Dartford, in Thurrock. For sand mastic in and around Purfleet-on-Thames, please call 0345 464 0079 or send us an email for a quick quote. We are based in Crawley and cover Thurrock, Purfleet-on-Thames included. Our Thurrock coverage runs to 26 places, and Purfleet-on-Thames is one of them. Our London page covers work nearby (14 miles or so).
All of RM19 and RM20 is within our area for sand mastic, from the main roads to the quietest streets. That includes homes and businesses on London Road, London Road Purfleet and London Road West Thurrock and the roads around them. Being close to the A1090, Purfleet-on-Thames is easy for our applicators to reach for sand mastic. If you’re just outside Purfleet-on-Thames, we cover West Thurrock (2 miles east), Temple Hill (2 miles south), South Stifford (2 miles east), Dartford (3 miles south) and Stone (3 miles south-east). Further out, we also cover Stanford-le-Hope (9 miles east), Grays (4 miles east), South Ockendon (3 miles north-east), Balstonia (9 miles east), Corringham (10 miles east) and Chadwell St Mary (6 miles east).
Local landmarks in Purfleet-on-Thames
In Purfleet-on-Thames, that means homes and buildings near Harris Academy Riverside, among other places. Purfleet-on-Thames has its own railway station: Purfleet station. Other landmarks nearby include Joyce Green Hospital (1.5 miles south) and Stone Castle (3.3 miles south-east). Open spaces near Purfleet-on-Thames include Rainham Marshes Nature Reserve.
Leave it or put it right?
Cement-based fillers and modern sealants don’t always suit a period surround. Sand mastic matches what was there and that can be important for listed homes. Around Purfleet-on-Thames, water from a failed joint in an older home can soak into timber and plaster, and that’s a much bigger job than renewing the sealant.
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. The price is agreed before we begin.
Why book with us
- Over 20 years’ experience
- Old sealant always removed completely
- Full insurance on every job
- Domestic, commercial and hotel work
See what affects the cost and customer reviews.
Nearby places to Purfleet-on-Thames
More services for Purfleet-on-Thames
Do you need sand mastic in Purfleet-on-Thames?
Timber frames move with the seasons. That movement opens up the mastic joint little by little.
It’s worth asking for a quote if you see:
- Gaps round a timber door in stone or brick
- Open joints round the window box
- Cement or filler used on old window joints that has cracked
- Draughts and rain around sash boxes
For site and facilities teams at buildings such as Purfleet Primary Academy, its window and door frames need their mastic kept sound, just like a home’s.
What your quote should include
- Is VAT in the price?
- Whether they’re fully insured
- Whether all the old sealant comes out first
- What preparation is included