Essex · England
North Weald Bassett External Mastic
We cover North Weald Bassett for sealing brickwork movement joints, render, cladding and façade joints. Old sealant removed completely, joints prepared properly.
- Movement joints with cracked, split or missing sealant
- Weeds or debris growing in open joints
- Failed seals between different materials
Different surfaces, different methods
Copings and trims
Coping joints that leak let water straight down into the wall. Sealing them early saves the wall below.
Render joints
Rendered walls have joints at beads, openings and changes of material. We reseal them with a flexible exterior sealant that suits the render colour.
About our external mastic in North Weald Bassett
Failed sealant is cut out, the depth set with closed-cell backing rod, and the joint resealed with a low-modulus sealant made for outside. We pick a colour that sits well with the wall so the joint doesn’t stand out. If you have movement joints filled with mortar instead of sealant and gaps where render, brick and frames meet, we can put it right.
Outbuildings, garages and conservatories around homes in places like North Weald Bassett 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.
Your job is guaranteed for a year, as with all our work.
- Place
- North Weald Bassett (CM16)
- Region
- Essex
- Cover
- A year, on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
What happens if it’s left?
Pointing a movement joint with mortar might seem a neat fix, but it stops the joint moving. The movement then cracks the brickwork or render nearby. The correct repair is a flexible sealant with the right backing. Around North Weald Bassett, water from a failed joint in an older home can soak into timber and plaster, which is far harder to put right than the sealant itself.
A few things move the cost up or down: how much old sealant there is and how stubborn it is, any mould to treat, and whether we need extra access for height. Your quote takes all of that into account.
Why choose Mr Mastic in North Weald Bassett
- Trusted Arbo and Everbuild sealants
- Domestic, commercial and hotel work
- Tidy, careful work
- Full insurance on every job
What affects the cost of external mastic
Every job gets its own quote. This is what makes a difference:
- The number of rooms or windows
- The amount of work
- Any working-time requirements on site
- Access and height
Every job is a little different, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all play a part, and we’ll explain the quote if you ask.
What to tell us for a quote
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- Where the job is, and your postcode
- What’s wrong with the joints now
- Whether it has been sealed before
- A few pictures by email, if you can
It all starts with a short chat. Describe the problem, the location and the size of the job, and we will talk you through what we’d do. When it suits you, phone 0345 464 0079 or email us.
Landlord and commercial work in North Weald Bassett
From a single let to a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
If you manage several properties in or around North Weald Bassett, jobs at different addresses can go on one quote. Just tell us the addresses and what each one needs.
Can I do it myself?
A DIY attempt does not rule out a professional job. We cut it out and start again.
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.
What we do, step by step
When we get to you, we compare the joints with what we discussed. If we find something unexpected, we talk it through with you first. After that, the work takes a few hours to a few days, depending on the length of joint and the access. Parking around North Weald Bassett is usually easier than in a town centre, but mention any lanes, gates or long drives. For outside work, side access and the height of the joints help us plan.
- We look at every joint and agree a colour to suit the wall.
- Failed sealant is removed back to clean, sound faces.
- Backing rod goes in so the sealant can stretch between the two faces.
- Primer is applied wherever the sealant needs it.
- We gun in low-modulus sealant and tool it neatly.
How to prepare
- Let us know if you’ve seen damp or leaks
- Keep children and pets away from the work area
- For indoor joints, keep the area dry beforehand if you can
How to get a quote
We quote each job on its own. Just call 0345 464 0079 or email us with the details and send pictures if you have them.
Related advice
Outside joints around North Weald Bassett
Historic houses like Hill Hall (about 3 miles south) are a reminder that the area around North Weald Bassett has older buildings as well as new. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material. 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.
For site and facilities teams at buildings such as St Andrew's CofE Primary School, larger buildings have long runs of movement joint that eventually need resealing. Homes close to Parish Church of St Andrew include some older properties, and the joints between older walls, newer extensions and the roofline need a sealant that can move.
North Weald Bassett is about 4 miles south-east of Harlow, in Essex. We carry out external mastic for homeowners, landlords and businesses in North Weald Bassett. Our area takes in 644 places across Essex. For nearby work, see our Chelmsford page.
Work in CM16 is quoted and booked the same way as anywhere else. Whether your property is on Blenheim Square, Elm Gardens and Wheelers Farm Gardens or a nearby road, our applicators can take on the job. Nearby, we also carry out external mastic in Thornwood Common (2 miles west), Coopersale (2 miles south-west), Hastingwood (2 miles north), Magdalen Laver (3 miles north) and Foster Street (3 miles north). Further out, we also cover Chelmsford (14 miles east), Harlow (4 miles north-west), Brentwood (9 miles south-east), Billericay (13 miles south-east), Loughton (6 miles south-west) and Waltham Abbey (7 miles west).
Around North Weald Bassett
In North Weald Bassett, that means homes and buildings near The Kings Head Public House and Weald Common Flood Meadows, among other places. Well-known places in the area include St. Margaret's Hospital (2 miles south-west) and Epping Signalling Museum (2.8 miles south-west). The countryside around North Weald Bassett includes Gernon Bushes.
Keeping the joints in good condition
How long the joints last depends on use and care. Here’s what we suggest:
- Keep high-pressure jets off the joints
- Tell anyone working on the walls about the movement joints
- Leave the joints unpainted unless we’ve said otherwise
- Act on the first splits you see
Avoid pressure-washing straight into the joints. High-pressure water can lift the edges.
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.
FAQs for North Weald Bassett
Is North Weald Bassett within the area you cover?
Yes, smaller places are covered as well as towns. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Do you cover North Weald Bassett for external mastic?
Yes. Our work covers London and the South East, and North Weald Bassett is part of that. You can phone 0345 464 0079 or email us and tell us what needs doing, and we will give you a clear quote.
Should I point up the gap in my brickwork?
No. A mortar-filled joint can’t move, so the wall cracks somewhere else instead. It needs a flexible sealant over backing rod.
How long before the joint can be used?
That depends on the sealant used, so follow the cure time we give you when we finish.
Where do you work from?
Mr Mastic is based in Crawley. Our applicators cover North Weald Bassett, along with the rest of our area.
Do the sealants smell?
That depends on the sealant. Some smell for a while, some hardly at all, and any smell fades as they cure.
How long will you be here?
A typical job takes a few hours for a handful of joints, longer for a whole elevation, including preparation and clearing up. We’ll confirm how long when we quote.
I rent my home. Can I book you?
Yes. Check with your landlord; we can send the quote to them too.