Essex · England
External Mastic in Great Notley
External mastic for Great Notley and the surrounding area: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Damp patches traced to an open external joint
- Gaps where render, brick and frames meet
- Joints where the bead has come unstuck
When something else is needed
We won’t take on work that won’t last, so these are the limits:
- Movement that’s more than a sealant joint can take
- Render that is blown, hollow or coming away
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
If you are not sure, just call 0345 464 0079 or email us and we will give you a straight answer.
Surfaces we seal
- Copings & trims
- Brickwork movement joints
- Render & cladding joints
- Concrete & block
- Façade panels
- Joints between brick and frames
How we handle external mastic in Great Notley
Low-level joints can generally be done from the ground. Where joints are higher up, tell us about the building when you get in touch and we will confirm what’s needed to reach them safely. We work on façade panels, concrete & block and brickwork movement joints, and common reasons people get in touch are joints where the bead has come unstuck and damp patches traced to an open external joint.
Outbuildings, garages and conservatories around homes in places like Great Notley add more joints to look after. Gutter ends, garage door frames and the joints where an extension meets the house are typical spots for leaks.
You get a 12-month guarantee, the same in Great Notley as everywhere else we work.
- Place
- Great Notley (CM77)
- Wider area
- Essex
- Cover
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Great Notley buildings and the weather
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.
In the older streets around The Church in Great Notley, the joints between older walls, newer extensions and the roofline need a sealant that can move. For site and facilities teams at buildings such as White Court School, larger buildings have long runs of movement joint that eventually need resealing.
Great Notley is about 2 miles south-west of Braintree, in Essex. Wherever you are in the CM77 postcode area, we can carry out external mastic at your property. Our Essex coverage runs to 644 places, and Great Notley is one of them. You can also see our page for Chelmsford, roughly 9 miles from Great Notley.
We cover every part of the CM77 postcode area for external mastic. That includes homes and businesses on London Road, Harnham Drive and Colville Close. We also cover Row Green (1 mile south-east), Young's End (1 mile south), Little Common (1 mile north-west), Rayne (1 mile north-west) and Black Notley (2 miles east). Larger places within reach include Chelmsford (9 miles south), Maldon (11 miles south-east), Witham (6 miles south-east), Camulodunum (15 miles east), Halstead (7 miles north-east) and Great Dunmow (7 miles west).
Near you in Great Notley
Locally, jobs take us to homes and businesses close to Notley High School and Braintree Sixth Form, The Essex Cricketers pub and Cuckoo Wood. Great Notley’s nearest station is Braintree station, about 1.6 miles north-east of the centre. Well-known places in the area include Tudor House Museum (Braintree) (2.2 miles north-east) and William Julien Courtauld Hospital (1.1 miles north-east). Green spaces nearby include Phyllis Currie Nature Reserve.
Great Notley: your questions answered
Do you cover Great Notley for external mastic?
Yes, Great Notley is within the area we cover. Our work covers London and the South East. You can call 0345 464 0079 or send us an email and let us know what needs doing, and we’ll give you a clear price.
Do you cover smaller places like Great Notley?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Are you fully insured?
Yes. Mr Mastic is fully insured, and we have been doing sealant work for more than 20 years.
What is a movement joint?
Brickwork, render and cladding all move a little, and planned joints take up that movement. The gap is sealed with a flexible sealant over backing rod.
Are you ARBOMaster approved?
Yes. We hold ARBOMaster approved applicator status, and we are fully insured.
Do you work for hotels and businesses?
Yes, regularly. Larger jobs can be planned room by room or area by area.
Can you seal joints between two different materials?
Yes. Where different materials meet is one of the most common joints we seal. We use a flexible sealant suited to both surfaces, primed where needed.
Where is Mr Mastic based?
We’re based in Crawley, West Sussex, and we work across South East England, London and Scotland.
What happens on the day
At the end, we look at the finished work together and tell you how long to leave it. The work normally takes a few hours for a handful of joints, longer for a whole elevation, depending on the size of the job. Parking around Great Notley is usually easier than in a town centre, but mention any lanes, gates or long drives. If the job is outside, tell us about side access and how high the joints are.
- Each joint is checked and the colour of the new sealant agreed.
- Failed sealant is removed back to clean, sound faces.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- Primer is applied wherever the sealant needs it.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
How to prepare
- Try not to wet indoor joints just before the visit
- Plan for the work area to be out of bounds to pets and children
- Tell us about access, such as stairs, a lift or high-level joints
Ask for a quote
It all starts with a short chat. Describe the problem, the location and the size of the job, and we will explain how we’d tackle it. When it suits you, phone 0345 464 0079 or email us.
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Aftercare tips
To keep the joints looking good and working properly:
- Ask before painting over external sealant
- Check external joints each spring
- Get split or bare joints resealed while the damage is small
- Keep movement joints as flexible joints, not mortar
Keep pressure washers away from the sealant. A strong jet can damage the edges of the bead.
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.
How we quote for external mastic
Your quote is based on your job. We take into account:
- Working hours on commercial sites
- The size of the job
- Any mould that needs treating
- How easy the joints are to reach
There are no prices on our website, because each job is priced on what it involves. Call for a quick quote.
Asking for a quote
Before you ask for a quote, have a think about:
- Any access issues, like height or stairs
- Any previous sealing or DIY work
- Where the job is, and your postcode
- What the problem is, such as mould, gaps, leaks or cracking
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and email pictures if that is easy.
For landlords and businesses
Letting agents and landlords in Great Notley can book us as well as homeowners. Sealant work between tenants keeps a property looking cared for before the next move-in.
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
Do you need external mastic in Great Notley?
UV, rain and frost all age exterior sealant. In time it goes hard, crazes on the surface and stops stretching, so the next time the wall moves, it splits or pulls away.
It’s worth asking for a quote if you see:
- Sealant pulling away from one side of the joint
- Panel joints letting water in
- Plants rooting in failed movement joints
- Joints pointed up with cement by mistake
Rented homes near Braintree station change hands often, and split movement joints are easy to miss on a rental until damp shows inside.
Before you book anyone
- How long the guarantee is
- How long to leave it before use
- Is VAT in the price?
- Whether all the old sealant comes out first
Nearby places to Great Notley
More services for Great Notley
Should I try it myself first?
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
If you’ve already had a go yourself, that is fine. We cut it out and start again.