Essex · England
High Easter Sand Mastic
Sand mastic in High Easter from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Wind and rain getting in round a sash window
- Old sand mastic that has cracked, crumbled or fallen out
- A silicone bead on a sash window that spoils the look
How it works
You don’t need to clear the whole room or building before we come, only the area right around the joints. We protect the rest, and the job takes a few hours for a single window, longer for several for a typical job. In a small place like High Easter, access is normally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- 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 isn’t 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.
Getting ready for the visit
- Clear items away from the joints we are working on
- Mention any parking rules near the property
- On commercial sites, let us know about site rules
How to get a quote
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is.
Read more
Sand mastic in High Easter, done properly
Sand mastic is the traditional way to point the gap between a timber window frame and the stone or brick around it. It’s made from sand and a linseed-oil-based binder, applied by hand. On older homes, it suits the building far better than silicone. If you’re dealing with mastic that needs renewing before redecorating and crumbling sand mastic round a window, we can help, on sash and case windows, timber door frames and brick reveals alike.
Homes in small places like High Easter 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.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we will sort it.
- Where
- High Easter (CM1)
- Region
- Essex
- Guarantee
- One year on every job
- Quote
- A clear price before work begins
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Common problems we fix in High Easter
Rain on the window surround works into any crack and loosens it further. Windows facing the weather tend to go first.
Keep an eye out for these signs:
- Crumbling sand mastic round a window
- Gaps where the frame meets the masonry
- Old cement repairs round a window that have failed
- Window mastic to renew ahead of painting
Around High Easter, as everywhere, sand mastic is only as good as the preparation behind it.
Questions to ask before you book
- What the quote includes, VAT included or not
- Which sealant they’ll use, and why
- What insurance they hold
- When the joint can take water or movement
What sand mastic looks like in High Easter
London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Homes close to Parish Church of St Mary include some older properties, and the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
High Easter is about 7 miles north-west of Chelmsford, in Essex. Homes, rented property, offices and hotels in High Easter can book us for sand mastic. Every job comes with our 12-month guarantee. Our Essex coverage runs to 644 places, High Easter among them. You can also see our page for Chelmsford, roughly 7 miles from High Easter.
Our applicators cover all of the CM1 postcode area for sand mastic and the streets around it. If you need sand mastic at a property on The Street and Boreham Court or a nearby road, we can help. Neighbouring places we cover for sand mastic include Stagden Cross (1 mile east), High Roding (2 miles north-west), Keeres Green (2 miles west), Roundbush Green (2 miles west) and Great Canfield (2 miles north-west). We also work in nearby towns such as Chelmsford (7 miles south-east), Braintree (10 miles north-east), Harlow (11 miles west), Brentwood (13 miles south), Maldon (15 miles east) and Billericay (13 miles south).
Around High Easter
In High Easter, that means homes and buildings near Cock And Bell pub. Other landmarks nearby include Willingale Doe (4.5 miles south-west) and Broomfield Hospital (5.1 miles south-east).
Keeping the joints in good condition
Simple care keeps the joints in good condition. We recommend:
- Make sure water runs off the sill
- Ask the planning authority about consent for listed or conservation-area homes
- Check the mastic when you check the paintwork
- Don’t run silicone over sand mastic
Avoid painting over the new mastic, as traditional guidance advises. If you are redecorating, ask us first.
Fine cracks show the mastic is starting to fail. Renewing it then is simpler than waiting until it falls out.
What affects the cost of sand mastic
The quote reflects the job in front of us. We look at:
- Any mould that needs treating
- How much there is to do
- How easy the joints are to reach
- How many rooms, windows or areas are involved
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you’re unsure, ring 0345 464 0079 or email us and we will give you an honest view and a quote.
Asking for a quote
To help us quote quickly, please include:
- If it’s domestic, commercial or a hotel
- What the problem is, such as mould, gaps, leaks or cracking
- Photos by email, if that is easy
- How many joints, rooms or windows are involved
Need a quote? 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.
High Easter: your questions answered
Can you do sand mastic in High Easter?
Yes, High Easter is within the area we cover. Our work covers London and the South East. Just ring 0345 464 0079 or email us with a few details of the job, and we’ll send you a clear quote.
Will you come out to High Easter?
Yes. High Easter is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Is it possible to paint over sand mastic?
Sand mastic is normally left unpainted, as guidance on traditional windows advises. Ask us before decorating.
How long does the job take?
Typically it takes anything from a few hours to a full day, depending on how many windows. Larger jobs naturally take longer.
What is sand mastic?
Sand mastic is a traditional material for pointing round windows and doors. It combines sand with a linseed-oil-based binder.
Can I do it myself?
Some simple jobs can be done by a careful DIYer. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
Do you have insurance?
Yes, we’re fully insured for every job we do.
Where is Mr Mastic based?
Our base is in Crawley, West Sussex, and we cover South East England, London and all of Scotland.
Landlord and commercial work in High Easter
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance.
Failed sealant is one of the commonest items on a check-out report. We can quote for more than one property at once.
Also near High Easter
Also in High Easter
When it isn’t the sealant
Sealant isn’t the answer to every problem, and we’ll tell you before any work starts. It will not solve:
- Sash cords, weights and draught-proofing of the sashes
- Timber that has rotted
- Cracked or broken glass
Not sure which it is? You can ring 0345 464 0079 or email us and we’ll tell you honestly.
What we seal
- Timber door frames
- Brick reveals
- Sash and case windows
- Period & listed homes
- Tenement windows
- Stone surrounds
DIY versus a professional finish
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.
Some sealant jobs are within reach of a careful DIYer, 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.