Essex · England
External Mastic in Crays Hill
Sealing brickwork movement joints, render, cladding and façade joints in Crays Hill, with a one-year guarantee on every job. Call for a quick quote.
- Panel joints letting water in
- Water getting into walls through failed joints
- Moss and dirt in joints with no sealant left
External mastic for homes and businesses in Crays Hill
A movement joint is a deliberate break that lets a wall expand and contract. The sealant in it has to stretch and squeeze for years, and when it fails, the wall takes the strain and water finds a way in. We are often asked to deal with moss and dirt in joints with no sealant left and sealant pulling away from one side of the joint, across concrete & block, joints between brick and frames and copings & trims.
Somewhere as small as Crays Hill, homes and farm buildings often face open ground, where walls and rooflines take the weather head on. Gutter joints and wall joints there need a sealant that can flex and stay put.
Our work is backed for twelve months, in Crays Hill and everywhere else we cover.
- Where
- Crays Hill (CM11)
- Wider area
- Essex
- Guarantee
- A year, on every job
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Looking after it afterwards
A little care helps the new joints last. We recommend:
- Act on the first splits you see
- Fix overflowing gutters above sealed joints
- Look over the joints every year, ideally after winter
- Make sure movement joints aren’t pointed over
Make sure anyone working on the wall later knows where the movement joints are. They must stay as flexible joints, never rendered or pointed over.
Leave a failed movement joint and water keeps getting into the wall. That can lead to damp patches, staining and frost damage which cost more to put right than the joint.
DIY versus a professional finish
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Landlords, agents and businesses in Crays Hill
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.
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
What affects the cost of external mastic
The quote reflects the job in front of us. We look at:
- Any mould that needs treating
- Any working-time requirements on site
- The number and length of the joints
- The number of rooms or windows
Instead of a standard rate, we price the job in front of us: how many joints, what’s in them now and how we reach them. You’ll know the price before we begin.
What to tell us for a quote
Before you ask for a quote, have a think about:
- Access, such as stairs, a lift or height
- The address or postcode of the job
- A few pictures by email, if you can
- The type of property
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we will explain what’s involved before giving you a price.
How the job changes by surface
Joints between dissimilar materials
Different materials may need different primers. We prepare both faces so the sealant bonds properly.
Brickwork movement joints
People sometimes point up a brick movement joint by mistake. Where one has been mortared, we cut it out and reseal it with sealant where it can be done safely.
Towns and villages near Crays Hill
Other services in Crays Hill
Common questions in Crays Hill
Is Crays Hill within the area you cover?
Yes. Crays Hill is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Can you do external mastic in Crays Hill?
Yes, Crays Hill 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, and we’ll send you a clear quote.
Can you seal joints between render and window frames?
Yes. The old joint is removed, both surfaces cleaned and primed where needed, and a flexible sealant applied. The colour is chosen to suit.
Will there be a smell?
Sometimes, a little. Any smell clears as the sealant cures, and ventilation helps.
When is the sealant fully cured?
It depends on the product and the temperature. Before we leave, we’ll tell you the cure time.
What do you put in the joint?
It depends on the joint: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. We use products from Arbo and Everbuild.
How long does the job take?
It depends on the size of the job, but as a guide it takes a few hours for a handful of joints, longer for a whole elevation. We will give you a better idea when we quote.
Are you an approved applicator?
Yes. We are an ARBOMaster approved applicator.
Leave it or put it right?
A properly done movement joint is an even line in a colour that suits the wall. A hurried job with smeared edges and no backing looks worse and fails sooner so it’s worth doing right. Where a wall is exposed, as many are in small places like Crays Hill, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all make a difference, and we will explain the quote if you ask.
Why us?
- Neat joints and a tidy finish
- 12-month guarantee on every job
- 20+ years of sealant experience
- An ARBOMaster approved applicator
Read what affects the cost and our reviews.
What happens on the day
All our tools and materials come with us in the van, so you do not need to buy or prepare anything. Once we’ve agreed what’s being done, we protect the area and start. Most jobs take a few hours to a few days, depending on the length of joint and the access. Somewhere like Crays Hill needs a little journey planning: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- First, the joints are inspected and the access agreed.
- Every bit of old sealant and any mortar or debris is cut out.
- The faces are brushed clean and primed where the product requires it.
- Backing rod sized to the joint goes in to set the depth.
- The exterior sealant is applied, tooled and checked along its length.
Getting ready for the visit
- Mention any sign-in or site rules at work premises
- Mention any tricky access
- For indoor joints, keep the area dry beforehand if you can
How to get a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job. When it suits you, call 0345 464 0079 or email us.
Advice
Walls and rooflines in Crays Hill
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.
Schools such as Crays Hill Primary School are buildings too, and movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. If you let a flat or house near Wickford station, outside joints that have cracked can let damp into a rental, so check them between lets. For an older house near a landmark such as Church of St Mary, older walls, gutters and the joints where extensions meet them need a flexible sealant.
Crays Hill is about 2 miles north of Basildon, in Essex. Anywhere in CM11, our applicators can take on external mastic. 644 places in Essex are on our list, large and small. For nearby work, see our Chelmsford page, about 9 miles away.
Jobs for external mastic in CM11 works the same way as everywhere else we cover. Local streets include London Road, Hope Road and Crays Hill, and we cover them all. We also cover the places around Crays Hill: Great Burstead (1 mile west), Ramsden Bellhouse (1 mile north), Ramsden Heath (2 miles north), Downham (3 miles north) and Little Burstead (3 miles west). Within a short drive, we also cover Chelmsford (9 miles north), Brentwood (7 miles west), Maldon (13 miles north-east), Canvey Island (7 miles south-east), Rayleigh (6 miles east) and Witham (15 miles north-east).
Local landmarks in Crays Hill
Typical jobs here are in homes near The Bromfords School and Sixth Form College and the streets around them. The nearest railway station is Wickford station, roughly 2.2 miles north-east of the centre. Other landmarks nearby include Barleylands Farm Museum (1.1 miles west) and Basildon University Hospital (3.1 miles south). Green spaces nearby include Norsey Wood.