Essex · England
Sand mastic for sash & case windows in Navestock Side, Essex
Professional sand mastic in and around Navestock Side, with old sealant always removed completely.
- Mastic round period door frames that has failed
- Tired mastic found when preparing windows for paint
- Old cement repairs round a window that have failed
How the visit works
We bring everything the job needs with us, so you don’t need to buy or prepare anything. Once we’ve agreed what’s being done, we protect the area and start. Most jobs take anything from a few hours to a full day, depending on how many windows. Somewhere like Navestock Side 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 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.
- The mastic is mixed, pressed into the joint by hand and shaped.
- We dress the surface so it sits neatly against the masonry.
Preparing for the visit
- On commercial sites, let us know about site rules
- Keep pets and children clear of the area while we work
- Tell us about any water getting in
How to get a quote
Want a quote for sand mastic? Please phone 0345 464 0079 or drop us an email and tell us about the job. We will explain what we’d do and send you a clear quote before any work starts.
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Sand mastic in Navestock Side
Sand mastic has long been used to fill the joint between timber frames and masonry. It’s a mix of sand and a linseed-oil-based binder and built up by hand. On older homes, it suits the building far better than silicone. We work on brick reveals, timber door frames and sash and case windows, and common reasons people get in touch are mastic dropping out of the joint and draughty sash windows at the surround.
Mastic can only go onto a dry, clean joint, so window work in Navestock Side is booked around the forecast. Let us know about access to all the frames, upstairs ones included.
Our work is backed for twelve months.
- Where
- Navestock Side (CM14)
- Wider area
- Essex
- Cover
- A year, on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Should I try it myself first?
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
Towns and villages near Navestock Side
What else we do in Navestock Side
What sealant work can’t fix
In fairness, there are a few things sealant will not fix:
- Crumbling stone or brickwork round the window
- Decisions on consent for listed homes
- Rotten sashes, sills or window boxes (a joiner’s job)
If you’re not sure, just phone 0345 464 0079 or email us and we will give you a straight answer before you book.
Joints and surfaces we work on
- Brick reveals
- Sash and case windows
- Tenement windows
- Stone surrounds
- Period & listed homes
- Timber door frames
Quotes for sand mastic in Navestock Side
For a quick quote, just ask. What matters most is:
- Whether there’s mould to deal with
- Whether the work is at height
- Working hours on commercial sites
- How many areas need sealing
Rather than a set price list, 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.
What to tell us for a quote
To make quoting easier, please include:
- The rough size of the job
- Any access issues, like height or stairs
- Photos by email, if that is easy
- Where the job is, and your postcode
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and email pictures if that is easy.
Work for landlords, hotels and businesses
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance that we can handle for you.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. Several properties can go on one quote.
Why it’s worth doing now in Navestock Side
Before painting the windows, it pays to renew the mastic. Painting over failed mastic does not seal it and traditional guidance is to leave the new mastic unpainted. Older cottages and farmhouses around Navestock Side can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
The cost reflects the work involved, not guesswork. That is why we ask a few questions first and give you a clear price before work begins.
Why book with us
- Anti-fungal silicone where joints get wet
- Quality sealants from Arbo and Everbuild
- A 12-month guarantee on all work
- Homes, businesses and hotels
Read what affects the cost and our reviews.
Your questions about sand mastic in Navestock Side
Do you work for landlords with property near Brentwood station?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. Just call 0345 464 0079 or send us an email with the address and what needs doing, and we will send you a clear quote.
Can you do sand mastic in Navestock Side?
Yes, Navestock Side is within the area we cover. Our work covers London and the South East. You can phone 0345 464 0079 or drop us an email and tell us what needs doing, and we’ll send you a clear quote.
Do I need permission for sand mastic on a listed building?
Check with your local planning authority. They’ll tell you if consent is needed for work to your windows.
Will it make a mess?
Very little: the area around the joints is protected first, and we clear up the old sealant and our materials before we leave.
What sealant do you use?
The product depends on the job: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. Brands we use include Arbo and Everbuild.
Are you insured?
Yes. We’re fully insured for every job we do.
What does sand mastic cost?
It depends on the job, so we quote each one individually. For a quick quote, ring 0345 464 0079 or send us an email with a short description of the job.
Can you match the sealant colour?
Generally, yes. Sealants come in white, clear, grey and other colours for many products, and we will agree it with you first.
What sand mastic looks like in Navestock Side
London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. With historic houses such as Hill Hall (about 4.8 miles west) nearby, there’s older building stock in the area around Navestock Side 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.
If you let a flat or house near Brentwood station, older sash windows in a rental need their mastic kept sound to keep the weather out.
Navestock Side is about 3 miles north-west of Brentwood, in Essex. Our applicators cover sand mastic for householders, landlords and businesses in Navestock Side and the surrounding area. Our area takes in 644 places across Essex, from the larger towns to small villages. For nearby work, see our Chelmsford page (11 miles or so).
Here we cover the CM14 postcode area for sand mastic. That includes homes and businesses on Navestock Side, Tyser Green and Snakes Hill. Nearby, we also carry out sand mastic in Bentley (1 mile south-east), Doddinghurst Common (1 mile north-east), Coxtie Green (1 mile south), Horseman Side (1 mile south-west) and Kelvedon Hatch (1 mile north-east). We also work in nearby towns such as Chelmsford (11 miles north-east), Basildon (10 miles south-east), Harlow (10 miles north-west), Brentwood (3 miles south-east), Billericay (7 miles east) and Rayleigh (15 miles east).
Local landmarks in Navestock Side
We work in homes and buildings around Weald Country Park and The White Horse pub. Navestock Side’s nearest station is Brentwood station, about 3.2 miles south-east of the centre. Nearby you will also find Brentwood Community Hospital (3.2 miles south-east). Open spaces near Navestock Side include Warley Place.
Common problems we fix in Navestock Side
Previous repairs in cement or silicone often trap water or crack away. They don’t move with the timber, and they generally need raking out.
People normally contact us after spotting one of these:
- Crumbling sand mastic round a window
- Draughty sash windows at the surround
- Mastic round period door frames that has failed
- Gaps where the frame meets the masonry
Homes close to Church of St Paul include some older properties, and the joint between an old wall and a newer frame is generally the first place rain gets in.
What your quote should include
- Are they insured?
- The length of the guarantee
- How long to leave it before use
- Whether they seal over old material or remove it