Essex · England
Sand mastic for sash & case windows in Rawreth, Essex
We cover Rawreth for traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old material cut out, joints cleaned and sealed neatly and a 12-month guarantee.
- A silicone bead on a sash window that spoils the look
- Old cement repairs round a window that have failed
- Gaps round a timber door in stone or brick
About our sand mastic in Rawreth
Our applicators renew the sand mastic around sash and case windows and doors in stone and brick. The old mastic is raked out, the joint is prepared and new mastic is shaped by hand. We work on period & listed homes, stone surrounds and sash and case windows, and people most often call us about wind and rain getting in round a sash window and a silicone bead on a sash window that spoils the look.
Mastic can only go onto a dry, clean joint, so window work in Rawreth is booked around the forecast. Let us know about access to all the frames, upstairs ones included.
All our work is covered by a one-year guarantee.
- Location
- Rawreth (SS11)
- Region
- Essex
- Guarantee
- A year, on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
What happens on the day
At the end, we look at the finished work together and explain the cure time. The visit itself normally takes a few hours per window, depending on the condition of the joints, depending on the amount of work. Somewhere like Rawreth needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- We check the window surrounds and agree which joints need renewing.
- Old, loose mastic is raked out and the joint cleaned.
- Large voids are packed out first, so the mastic is not too thick.
- We mix the sand mastic and apply it by hand, shaping it to the joint.
- We dress the surface so it sits neatly against the masonry.
Before we arrive
- On commercial sites, let us know about site rules
- Move anything stored near the joints
- Where the joints are inside, avoid wetting them before we arrive
How to get a quote
We do not publish a price list. Instead, your job gets its own clear quote. To arrange one, ring 0345 464 0079 or email us.
Read more
FAQs for Rawreth
Will you come out to Rawreth?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
I let a flat near Battlesbridge station. Can you help?
Yes, rental work is part of what we do. Just ring 0345 464 0079 or drop us an email and tell us about the property, and we will give you a clear price.
Are you ARBOMaster approved?
Yes. We hold ARBOMaster approved applicator status.
Is it OK to seal over old sealant?
No. Fresh sealant doesn’t stick to old sealant, and it traps any mould or water underneath. It all has to come out first.
Are you insured?
Yes. We are fully insured, and we can confirm the details when we quote.
Can I add another job to the visit?
Yes. Several rooms, windows or areas can go on one quote.
Will it make a mess?
Tidy work is part of the job. We protect what’s around the joints.
What guarantee comes with the work?
Every job comes with our 12-month guarantee, and we are fully insured.
What sealant work can’t fix
Before booking, it’s worth knowing the limits:
- Sashes that need overhauling
- Broken panes
- Damaged stone surrounds
Not sure which it is? You can ring 0345 464 0079 or send us an email and we’ll tell you honestly.
What we seal
- Sash and case windows
- Tenement windows
- Timber door frames
- Brick reveals
- Stone surrounds
- Period & listed homes
How we quote for sand mastic
We do not publish a price list. What we look at:
- The number of rooms or windows
- Whether there’s mould to deal with
- The old material and how stubborn it is
- How easy the joints are to reach
Rather than a set price list, we price the job in front of us: the amount of work, the old material and the access. You’ll know the price before we begin.
What to tell us for a quote
To make quoting easier, please include:
- Access, such as stairs, a lift or height
- The rough size of the job
- What the problem is, such as mould, gaps, leaks or cracking
- Any previous sealing or DIY work
To get a quote, phone 0345 464 0079 or email us with the location and a short description of the problem. We’ll send you a clear quote before any work starts.
Aftercare tips
No joint lasts for ever, but care makes a real difference. A few tips:
- Get any rot dealt with first
- Go gently near the mastic when preparing windows
- Avoid patching sand mastic with silicone
- Find out about consent before window work on a listed home
Leave the new mastic alone while it firms up. It skins over quickly, but takes longer to harden fully.
Good mastic helps keep the frame dry. Once it fails, water can sit against the timber and timber that stays wet can rot.
Sand mastic in Rawreth: local notes
Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Letting a property close to Battlesbridge station? Then any sash windows need sound mastic to keep draughts and rain out. Schools such as Our Lady of Ransom Catholic Primary School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages. If you live in an older home near Church of St Nicholas, the joint between an old wall and a newer frame is generally the first place rain gets in.
Rawreth is about 2 miles north-west of Rayleigh, in Essex. For sand mastic in and around Rawreth, it’s easy to get a quote: please phone 0345 464 0079 or send us an email. We cover Essex from our Crawley base. Rawreth is one of 644 towns and villages in Essex where we work. You can also see our page for Chelmsford, roughly 10 miles from Rawreth.
Jobs for sand mastic in SS11 is quoted and booked the same way as anywhere else. Local streets include Church Road, Chelmsford Road and Bedloes Avenue, and we cover them all. We also cover the places around Rawreth: Battlesbridge (1 mile north-west), Shotgate (1 mile west), Wickford (2 miles west), Runwell (2 miles north-west) and Rettendon (3 miles north). Larger places within reach include Chelmsford (10 miles north-west), Basildon (6 miles south-west), Brentwood (12 miles west), Maldon (9 miles north-east), Canvey Island (6 miles south) and Billericay (7 miles west).
Local landmarks in Rawreth
We work in homes and buildings around Kendal Park, The Barge Inn and Beauchamps High School, among other places. The nearest railway station is Battlesbridge station, roughly 1 mile north of the centre. Well-known places in the area include Rayleigh Castle (2 miles south-east) and Chartwell Private Hospital (5.1 miles south-east). The countryside around Rawreth includes Shotgate Thickets.
Also in Rawreth
Can I do it myself?
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.
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
What the job involves on each surface
Sash and case windows
Sash windows are where we do most sand mastic work. Each joint round the box is raked out and renewed.
Tenement and terrace windows
Tenements and terraces often have many sash windows with ageing mastic. We can do one window or several.
Why deal with it now?
Filling over old, loose mastic doesn’t last. Raking out and preparing the joint gives it a sound base so the new mastic stays put. In a small place like Rawreth, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
Doing several joints on one visit usually makes better use of the time than several visits, so tell us about everything that needs sealing. We’ll give you a clear quote for the lot.
Why choose Mr Mastic in Rawreth
- Fully insured
- 20+ years of sealant experience
- Rated 4.9 stars on Google
- Every job guaranteed for a year
Take a look at how sealant jobs are priced and customer reviews.