Essex · England
Mashbury Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homeowners, landlords and businesses in Mashbury. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Old cement repairs round a window that have failed
- Gaps round a timber door in stone or brick
- Tired mastic found when preparing windows for paint
How the visit works
Every visit runs the same way: we check the joints, mask and protect the surrounding surfaces, carry out the job and clear up. It normally takes a few hours for a single window, longer for several. Somewhere as small as Mashbury, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First we agree which joints need doing.
- Old mastic and any loose material are raked out.
- We pack any deep voids first.
- The sand mastic is mixed and pressed into the joint by hand.
- We dress the finish so it sits neatly against the masonry.
Before we arrive
- Tell us about any previous sealing or DIY attempts
- Let us know if you’ve seen damp or leaks
- Let us know about stairs, lifts or work at height
How to get a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and add photos by email if you can.
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How we handle sand mastic in Mashbury
Silicone on a period window often looks wrong and is not always the right material. Sand mastic gives a finish that matches the age of the house and we can swap the silicone for it. We work on timber door frames, sash and case windows and stone surrounds, and common reasons people get in touch are failed mastic on an exposed elevation and window mastic to renew ahead of painting.
Homes in small places like Mashbury 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.
Our work is backed for twelve months.
- Location
- Mashbury (CM1)
- Wider area
- Essex
- Guarantee
- 12 months on all our work
- Quotes
- A clear price before work begins
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
What sealant work can’t fix
To be straight with you, some problems need a different trade:
- Timber that has rotted
- Putty and glazing repairs
- Sashes that need overhauling
If in doubt, call 0345 464 0079 or send us an email and we’ll say what we think before booking.
Where we work in Mashbury
- Timber door frames
- Sash and case windows
- Stone surrounds
- Period & listed homes
- Brick reveals
- Tenement windows
Your questions about sand mastic in Mashbury
Do you work for landlords with property near Chelmsford station?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. You can phone 0345 464 0079 or send us an email with the details for a clear quote.
Will you come out to Mashbury?
Yes, Mashbury is covered. Our work covers London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Do the sealants smell?
Sometimes, a little. Any smell clears as the sealant cures, and ventilation helps.
Are you ARBOMaster approved?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we are part of it.
Is it worth trying it myself?
It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
Do you guarantee sand mastic work?
All our work has a 12-month guarantee.
How long does sand mastic take?
As a guide, most jobs take a few hours per window, depending on the condition of the joints. Larger jobs naturally take longer, and we’ll say how long yours will take.
Is it messy?
Very little: the area around the joints is protected first, and we tidy up before we go.
Why deal with it now?
New mastic over crumbling mastic will not hold. Raking out and preparing the joint gives it a sound base so the new work lasts. Older cottages and farmhouses around Mashbury can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Homes and businesses are quoted the same way: the amount of work, the access and the products needed, plus any working-time requirements on site. Ask us for a quote and we will explain what it covers.
What you get with us
- Approved under the ARBOMaster scheme
- 180+ five-star Google reviews
- Over 20 years’ experience
- Experience in homes, commercial sites and hotels
See what affects the cost and customer reviews.
What sand mastic looks like in Mashbury
Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Homes close to Mashbury Church include some older properties, and the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Mashbury is about 5 miles north-west of Chelmsford, in Essex. Our applicators cover sand mastic for homeowners, landlords and businesses in Mashbury and the surrounding area, as part of our work across Essex. Our Essex coverage runs to 644 places, Mashbury among them.
All of CM1 is within our area for sand mastic. If you need sand mastic at a property on Mashbury Road and Barrack Road or a nearby road, our applicators can take on the job. We also cover the places around Mashbury: Good Easter (2 miles west), Chalk End (2 miles south-west), Boyton Cross (2 miles south), Roxwell (3 miles south) and Margaret Roding (3 miles west). Larger places within reach include Chelmsford (5 miles south-east), Basildon (15 miles south), Braintree (10 miles north-east), Harlow (12 miles west), Brentwood (12 miles south) and Maldon (13 miles east).
What’s near Mashbury
For rail, the closest station is Chelmsford station, about 4.9 miles south-east of the centre. Other landmarks nearby include Broomfield Hospital (3.3 miles east) and Willingale Doe (4.2 miles south-west). Open spaces near Mashbury include Little Waltham Meadows.
Should I try it myself first?
Sealing over old silicone is the commonest DIY error. New silicone won’t bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
A DIY attempt doesn’t rule out a professional job. We remove it and do the joint properly.
Common problems we fix in Mashbury
Shallow joints are a common cause. Mastic that is too thin cracks and drops out so we make sure the new mastic is the right thickness.
It’s worth asking for a quote if you see:
- Mastic worn away on windows facing the weather
- Tired mastic found when preparing windows for paint
- Wind and rain getting in round a sash window
- Mastic round period door frames that has failed
For landlords with property near Chelmsford station, any sash windows need sound mastic to keep draughts and rain out.
Questions to ask before booking
- How hidden problems are handled
- Whether the sealant suits the joint
- How the colour is chosen
- What guarantee comes with the work
Towns and villages near Mashbury
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Landlords, agents and businesses in Mashbury
For anyone letting property in or around Mashbury, jobs at different addresses can be quoted together. Send us the addresses and the work at each, and photos by email help.
We regularly work with letting and managing agents. Tell us the address, the job and how access works.
Looking after it afterwards
So the new joints stay in good condition:
- Avoid patching sand mastic with silicone
- Do not paint over the new mastic
- Clear gutters so water does not pour onto the windows
- Inspect the joints round the windows every year or so
Check the mastic when you check the paintwork. Small cracks are easier to deal with early.
Once mastic starts to crumble, rain gets in. That water can reach the timber frame and the wall, so renewing it early is worth it.