Essex · England
Bocking Sand Mastic
Specialist sand mastic for Bocking: the right sealant, proper preparation and a neat finish. Call for a quick quote.
- Tired mastic found when preparing windows for paint
- Old sand mastic that has cracked, crumbled or fallen out
- Gaps where the frame meets the masonry
How it works
Before we leave, we go over the finished joints with you and tell you how long to leave it. The visit itself generally takes a few hours for a single window, longer for several, depending on the size of the job. A visit to Bocking is planned like any other: the time, the access and where to park are agreed in advance. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- We start by checking each surround and agreeing the joints to renew.
- Old, loose mastic is raked out and the joint cleaned.
- Deep voids are packed so the mastic is the right thickness.
- We mix the sand mastic and apply it by hand, shaping it to the joint.
- The mastic is finished to sit tidily against the stone or brick.
How to prepare
- Let us know about earlier repairs to the joints
- Mention any sign-in or site rules at work premises
- Tell us about any water getting in
Getting a quote
To get a quote, phone 0345 464 0079 or drop us an email and tell us where the job is and what the problem looks like. We will give you a clear quote before any work starts.
Related advice
Sand mastic for homes and businesses in Bocking
We renew sand mastic around sash windows and doors in stone and brick. Out comes the old, loose mastic, the joint is prepared and new mastic is shaped by hand. If you have modern sealant on a period surround and mastic dropping out of the joint, we can help, whatever the surface.
Houses in smaller places like Bocking can stand more in the open than those in a built-up town. That is hard on the mastic around frames and sills.
Each job carries a 12-month guarantee, large or small.
- Where
- Bocking (CM7)
- Region
- Essex
- Cover
- 12 months on all our work
- Price
- A clear price before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
What we can’t put right
A few problems are outside what sealant work can do:
- Sashes that rattle, stick or will not open
- Crumbling stone or brickwork round the window
- Broken panes
If you are not sure, just call 0345 464 0079 or email us and we will give you a straight answer before you book.
What we seal
- Sash and case windows
- Brick reveals
- Period & listed homes
- Tenement windows
- Timber door frames
- Stone surrounds
How we quote for sand mastic
There’s no set price list, because no two jobs are the same. The quote depends on:
- How many areas need sealing
- The size of the job
- Whether the work is at height
- Working hours on commercial sites
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you’re unsure, ring 0345 464 0079 or send us an email and we will give you an honest view and a quote.
What to tell us for a quote
Photos by email are helpful but not essential. Try to tell us:
- The address or postcode of the job
- Any access issues, like height or stairs
- Pictures of the joints, sent by email
- What’s wrong with the joints now
It all starts with a short chat. Describe the problem, the location and the size of the job. When it suits you, ring 0345 464 0079 or send us an email.
Bocking questions
Do you work for landlords with property near Braintree station?
Yes. We work for letting agents and landlords as well as householders. You can call 0345 464 0079 or email us with the details for a clear quote.
Can you do sand mastic in Bocking?
Yes, Bocking is within the area we cover. We work across London and the South East. You can call 0345 464 0079 or drop us an email and tell us what needs doing, and we will give you a clear price.
Can sand mastic be painted?
It’s traditionally left unpainted, which is what traditional guidance recommends. Ask us before decorating.
What guarantee comes with the work?
All our work has a 12-month guarantee, and we are fully insured.
Can you do several jobs on one visit?
Yes. Tell us about everything you’d like done and you’ll get one quote.
Do you do commercial work?
Yes. We’ve worked for hotels, offices and other businesses, and we are fully insured.
What does sand mastic cost?
We do not publish prices, because the cost depends on the job: its size, the old material, access and the product needed. You’ll get a clear quote before we start.
What is sand mastic?
Sand plus a binder based on linseed oil. It’s built up in the joint by hand and finished to sit neatly against the masonry.
Signs you need sand mastic in Bocking
Timber frames move with the seasons. The movement cracks the mastic little by little.
The problems people generally mention when they call are:
- Old cement repairs round a window that have failed
- Mastic that needs renewing before redecorating
- Mastic dropping out of the joint
- Open joints round the window box
In the older streets around Church of St Peter, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
What to look for in a quote
- What happens if the job turns out different
- How the joint is cleaned and prepared
- How long to leave it before use
- Whether they’re fully insured
Towns and villages near Bocking
Also in Bocking
Keeping the joints in good condition
Once the sealant has cured, a few habits help it last:
- Clear gutters so water does not pour onto the windows
- Sort the mastic before the decorators arrive
- Look over the window mastic once a year
- Ask us before painting near the mastic
Check the mastic when you check the paintwork. Small cracks are easier to deal with early.
It’s best to renew mastic before painting the windows. Paint over cracked mastic only covers it up.
How the job changes by surface
Stone surrounds
Sand mastic sits naturally against stone. It finishes to look like part of the surround.
Period and listed homes
Period homes look their best with traditional materials, and sand mastic is one of them.
Should I try it myself first?
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
If you’re set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
Frames and glazing around Bocking
The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Letting a property close to Braintree station? Then older sash windows in a rental need their mastic kept sound to keep the weather out. Managing a site like St Francis Catholic Primary School? Then larger buildings have plenty of frames, and the mastic around each one ages.
Bocking is about 1 mile west of Braintree, in Essex. We provide sand mastic to homeowners, landlords and businesses in Bocking and nearby, as part of our work across Essex. Bocking is one of 644 towns and villages in Essex we cover for sand mastic. Our Chelmsford page covers work nearby (10 miles or so).
We work across CM7 for sand mastic and the streets around it. Sand mastic is available to properties on Clare Road, The Avenue and Mount Road. Nearby, we also carry out sand mastic in Braintree (1 mile east), Great Notley (2 miles south-west), Panfield (2 miles north-west), Rayne (2 miles west) and Row Green (2 miles south). Larger places within reach include Colchester (15 miles east), Chelmsford (10 miles south), Maldon (12 miles south-east), Witham (7 miles south-east), Camulodunum (14 miles east) and Halstead (5 miles north-east).
Near you in Bocking
In Bocking, that means homes and buildings near Horse And Groom Inn, Bocking Blackwater and Edith Borthwick School. For rail, the closest station is Braintree station, about 0.6 miles south-east. Nearby you will also find St Michael's Hospital (0.5 miles south-west) and Tudor House Museum (Braintree) (0.5 miles north-east). For a walk, there’s Belcher's and Broadfield Woods.