Essex · England
Sand mastic for sash & case windows in Broomfield, Essex
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homes and businesses in Broomfield and across Essex. Fully insured, ARBOMaster approved and guaranteed for a year.
- Draughts and rain around sash boxes
- Gaps where the frame meets the masonry
- Cement or filler used on old window joints that has cracked
Sand mastic for homes and businesses in Broomfield
A silicone bead around a sash window can look out of place and does not suit the building. Sand mastic is the traditional choice and we can swap the silicone for it. Typical jobs include old sand mastic that has cracked, crumbled or fallen out and gaps between timber frames and stone or brick, across sash and case windows, stone surrounds and tenement windows.
Around Broomfield, conservatories, garden rooms and patio doors are often part of the house. Their glazing joints and frame seals are as much a part of the job as the windows.
Whatever the size of the job, you get the same one-year guarantee in Broomfield and across Essex.
- Place
- Broomfield (CM1, CM3)
- Wider area
- Essex
- Cover
- A year, on every job
- Price
- A clear price before work begins
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Frames and glazing around Broomfield
With historic houses such as Hylands (about 4.5 miles south) nearby, there’s older building stock in the area around Broomfield 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. Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Homes close to Church of St Mary the Virgin include some older properties, and frames set in older brick or stone need a sealant that suits the wall as well as the frame. Rented homes near Beaulieu Park station change hands often, and cracked sand mastic around sash windows lets in the draughts tenants complain about. Managing a site like Chelmer Valley High School? Then its window and door frames need their mastic kept sound, just like a home’s.
Broomfield is about 2 miles north of Chelmsford, in Essex. We provide sand mastic to householders, landlords and businesses in Broomfield and nearby. Broomfield is one of 644 towns and villages in Essex we cover for sand mastic.
Every address in CM1 and CM3 is covered for sand mastic. We cover properties on Mandeville Way, Court Road and Gernon Close. Other places close to Broomfield include Little Waltham (1 mile north), Minnow End (1 mile north), Breeds (1 mile north-west), Patching (2 miles south) and Great Waltham (2 miles north-west). Further out, we also cover Basildon (14 miles south), Braintree (9 miles north-east), Harlow (15 miles west), Brentwood (12 miles south-west), Maldon (10 miles east) and Billericay (10 miles south).
Local landmarks in Broomfield
Locally, jobs take us to homes and businesses close to The Kings Arms Inn and Broomfield Primary School. The closest station to Broomfield is Beaulieu Park station, about 2.3 miles south-east. Other landmarks nearby include Broomfield Hospital (under half a mile north-west) and Peter Edwards Museum And Library (2.8 miles south). Not far away are Little Waltham Meadows.
How we quote for sand mastic
You’ll get a clear quote before work begins. It takes into account:
- How many areas need sealing
- The old material and how stubborn it is
- Whether the work is at height
- Working hours on commercial sites
The cost depends on how much there is to do, how much old material has to come out and access to the work. We give a clear quote before we start, so you know where you stand.
What to tell us for a quote
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- What the problem is, such as mould, gaps, leaks or cracking
- Pictures of the joints, sent by email
- Any access issues, like height or stairs
- Roughly how big the job is
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and email photos if that is easy.
Work for landlords, hotels and businesses
Failed sealant is one of the commonest items on a check-out report, and it’s quick to put right between tenancies. Several properties can be quoted together.
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements and we will give you a quote.
Broomfield: your questions answered
Can you help a landlord with a rental near Beaulieu Park station?
Yes. We work for landlords and agents as well as homeowners, and several properties can be quoted together. You can ring 0345 464 0079 or drop us an email with the details for a clear quote.
Is Broomfield within the area you cover?
Yes. Broomfield is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Is consent needed for window work on a listed home?
Check with your local planning authority. They decide whether consent is needed for work to your windows.
Can new sealant go over the old?
No. New silicone won’t bond to old silicone, and it traps any mould or water underneath. It all has to come out first.
Is it possible to paint over sand mastic?
The usual advice is to leave sand mastic unpainted. Ask us before you decorate around it and we will talk you through it.
When will the new mastic be hard?
Not straight away. The skin forms first, and the full set comes later and we’ll give you an idea for your job.
Will there be a smell?
That depends on the sealant. Some smell for a while, some hardly at all, and any smell fades as they cure.
What is sand mastic?
It’s sand mixed with a linseed-oil-based binder, used between timber frames and stone or brick.
Can I do it myself?
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
Looking after it afterwards
Looking after new joints is easy:
- Keep sills and gutters clear so water drains away
- Inspect the joints round the windows every year or so
- Plan mastic work ahead of painting
- Leave the new mastic unpainted
Keep gutters and sills clear so water runs away from the surround. Water sitting against the mastic shortens its life.
Sound mastic protects the frame. Failed mastic lets water reach the timber, which can lead to rot.
What the job involves on each surface
Tenement and terrace windows
In shared buildings, the windows may be part of a wider repair, so check who is responsible first.
Stone surrounds
Stone openings are rarely perfectly straight, so the gap is not the same all the way round. We shape it by hand to follow the stone.
Towns and villages near Broomfield
Other services in Broomfield
What we do, step by step
You don’t need to clear the whole room or building before we come, just the space around the work. We protect the rest, and the work takes a few hours per window, depending on the condition of the joints for a typical job. For a job in Broomfield, we agree the time, the access and parking before the day. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- Each surround is checked first.
- The joint is raked out and cleaned.
- We fill deep gaps so the new mastic isn’t too thick.
- We point the joint with sand mastic by hand.
- The finish is dressed neatly.
Before we arrive
- Try not to wet indoor joints just before the visit
- Mention any sign-in or site rules at work premises
- Let us know if you’ve seen damp or leaks
Ask for a quote
To get a quote, phone 0345 464 0079 or send 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.
Advice
Honest limits
Some problems need a builder, plumber or other trade rather than us:
- Cracked or broken glass
- Timber that has rotted
- Masonry that needs repairing
If you are not sure, just phone 0345 464 0079 or drop us an email and we’ll give you a straight answer.
Surfaces we seal
- Period & listed homes
- Stone surrounds
- Brick reveals
- Timber door frames
- Sash and case windows
- Tenement windows