Essex · England
External Mastic in Howe Green
Specialist external mastic for Howe Green: careful preparation, the right product and tidy work. Call for a quick quote.
- Movement joints with cracked, split or missing sealant
- Failed sealant between panels on a façade
- Plants rooting in failed movement joints
How we handle external mastic in Howe Green
Joints between dissimilar materials, like brick against render or concrete against a steel frame, see movement from both sides. A flexible sealant bridges the two where a rigid filler would soon crack. If you have water getting into walls through failed joints and sealant pulling away from one side of the joint, we can help.
Outside joints can only be sealed when they’re dry, so work in Howe Green is booked around the forecast. Tell us about access to all sides of the building, including outbuildings and garages.
Each job carries a 12-month guarantee.
- Location
- Howe Green (CM2)
- Region
- Essex
- Cover
- One year on every job
- Quotes
- A clear price before work begins
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
What we do, step by step
When we arrive, we look over the joints with you first, so you know exactly what we are doing. We protect the surfaces around the joints before any work starts. Most jobs take a few hours for a handful of joints, longer for a whole elevation. Somewhere as small as Howe Green, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- We inspect the joints and agree which need resealing and how they’ll be reached.
- The old mastic and anything lodged in the joint is removed.
- We clean both faces of the joint and prime them where the product calls for it.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
Getting ready for the visit
- Mention any tricky access
- Move anything stored near the joints
- Keep children and pets away from the work area
Getting a quote
If you’re in Howe Green and need external mastic, phone 0345 464 0079 or email us. A short description of the job and where it is helps us quote, and you will get a clear quote before any work starts.
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What happens if it’s left?
It often makes sense to reseal all the failing joints on an elevation together. They’ve weathered the same way and it means sorting access once. In a small place like Howe Green, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
Every job is a little different, so each one gets its own quote. Size, access and the product the joint needs all play a part.
Why Howe Green clients choose us
- 4.9 on Google from 180+ five-star reviews
- 20+ years of sealant experience
- We agree the colour with you first
- Fully insured
Take a look at how sealant jobs are priced and our reviews.
Can I do it myself?
The biggest DIY mistake is sealing over old sealant. New silicone will not bond to old, so it lifts and traps water and mould underneath. Everything old must be removed first.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and getting the depth right matters as much as the look.
What affects the cost of external mastic
Some jobs are bigger than they look, and some smaller. The main factors:
- How many rooms, windows or areas are involved
- The number and length of the joints
- Any mould that needs treating
- The type of sealant required
There are no prices on our website, because the cost depends so much on the job itself. For a quick quote, please phone 0345 464 0079 or send us an email.
Asking for a quote
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- Access, such as stairs, a lift or height
- Whether it’s a home or a business
- How many joints, rooms or windows are involved
- Whether it has been sealed before
Asking for a quote is easy: let us know the job and the location and its rough size. A few pictures by email make the job easier to understand, and we will take it from there.
Places near Howe Green
Also in Howe Green
Different surfaces, different methods
Render joints
Water behind render can lead to blown patches. Resealing the joints early keeps water out and helps it last.
Joints between dissimilar materials
Different materials may need different primers. Both surfaces are cleaned and primed as the product requires.
Questions from Howe Green
Is Howe Green within the area you cover?
Yes. Howe Green is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Can you do external mastic in Howe Green?
Yes, Howe Green is within the area we cover. Our work covers London and the South East. Just call 0345 464 0079 or send us an email with a few details of the job.
Do you hold any approvals?
Yes. Mr Mastic is an ARBOMaster approved applicator.
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 use backing rod?
The foam is closed-cell backing rod. It keeps the sealant at the right depth and bonded to the sides only, which would stop it stretching.
Can landlords and businesses book you?
Yes, we do. Domestic, commercial and hotel work are all part of what we do.
Does someone need to be in?
It depends on the job. Inside work needs someone to give us access, while outside work can sometimes be arranged differently.
Can you quote for more than one area?
Yes, we can. More than one area can be quoted together.
Howe Green buildings and the weather
Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. With historic houses such as Danbury Place (about 1.7 miles north-east) nearby, there’s older building stock in the area around Howe Green as well as newer homes. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth.
Schools such as The Sandon School are buildings too, and movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. If you live in an older home near Church of St Andrew, an extension built onto an older house moves differently, and the joint between them takes the strain. For landlords with property near Chelmsford station, split movement joints are easy to miss on a rental until damp shows inside.
Howe Green is about 3 miles south-east of Chelmsford, in Essex. Jobs in Howe Green get the same care as everywhere else we work: old sealant removed completely, careful preparation and a one-year guarantee. Our Essex coverage runs to 644 places, Howe Green among them.
We work across CM2 for external mastic. External mastic is available to properties on Chalklands, Southend Road and The Tythings and the roads around them. Neighbouring places we cover for external mastic include East Hanningfield (2 miles south-east), West Hanningfield (2 miles south-west), Bicknacre (2 miles east), Rettendon (3 miles south) and South Hanningfield (3 miles south). Further out, we also cover Chelmsford (3 miles north-west), Basildon (9 miles south), Braintree (13 miles north), Brentwood (11 miles south-west), Maldon (7 miles east) and Canvey Island (12 miles south).
Local landmarks in Howe Green
Howe Green’s nearest station is Chelmsford station, about 3.6 miles north-west. Well-known places in the area include Bond Street Chelmsford (3.3 miles north-west) and Baddow Hospital (1.2 miles north-west). Not far away are Hanningfield Reservoir.
Keeping the joints in good condition
Good habits help new joints last longer. A few tips:
- Clear growth from the base of walls and joints
- Fix overflowing gutters above sealed joints
- Wash walls gently around the sealant
- Check the sealant is paintable before painting near it
Don’t paint over the new sealant unless we’ve said the product is paintable. Paint can crack on a flexible joint.
Water getting behind cladding or render can go unnoticed for a long time. By the time there’s a damp patch, the damage can be well established so early resealing is worth it.
Landlords, agents and businesses in Howe Green
We also work for property managers and facilities teams. We can quote a run of properties together, and we are fully insured for the work.
In hotels, rooms out of use cost money, so the work can be planned room by room around your bookings where we can. We have worked in hotels as well as homes and businesses.