Essex · England
Aldham External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for householders, landlords and businesses in Aldham. Fully insured, ARBOMaster approved and guaranteed for a year.
- Failed sealant between panels on a façade
- Brick movement joints where the sealant has split
- Plants rooting in failed movement joints
External mastic for homes and businesses in Aldham
External mastic is a job where short cuts show quickly. New sealant over old, joints packed with mortar and beads with no backing all tend to fail early. We take the old material out and do it properly. Typical jobs include old sealant gone brittle and cracked and sealant that has lost its bond to the brick or render, on copings & trims, joints between brick and frames and façade panels.
Around Aldham, older buildings can be stone, brick or timber-framed, many with extensions added later. Where one material meets another is where water generally gets in, and they need the right sealant at the right depth.
Whatever the size of the job, it’s backed by our 12-month guarantee in Aldham and across Essex.
- Location
- Aldham (CO6)
- Wider area
- Essex
- Guarantee
- 12 months on all our work
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Leave it or put it right?
The longer a joint stays open, the more water the wall takes in. In cold weather, frost can damage wet brick and render around the joint, so the damage spreads beyond the joint. Where a wall is exposed, as many are in small places like Aldham, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
Combining jobs into one visit usually makes better use of the time than several visits, so tell us about everything that needs sealing. We’ll send you a clear quote for the lot.
Why book with us
- More than 20 years in sealant work
- Trusted Arbo and Everbuild sealants
- A sealant colour to suit the surroundings
- 12-month guarantee on every job
Read what affects the cost or customer reviews.
Towns and villages near Aldham
What else we do in Aldham
Do you need external mastic in Aldham?
Sometimes a movement joint was filled with mortar or a rigid filler. The joint cannot move, so the wall cracks somewhere else instead.
People normally contact us when they notice something like this:
- Panel joints letting water in
- Hard, crazed mastic that has stopped moving
- Rigid filler in a joint that should flex
- Water getting into walls through failed joints
For site and facilities teams at buildings such as Holy Trinity CofE Primary School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Questions to ask before booking
- What guarantee comes with the work
- What insurance they hold
- Whether all the old sealant comes out first
- Which colour the sealant will be
How it works
Our applicators work methodically: protection first, then preparation, sealing and a tidy-up. Typically it takes anything from a few hours to several days, depending on the building, and the area is left clean. Somewhere as small as Aldham, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- We start by checking each joint, agreeing the ones to redo and how we’ll reach them.
- Old sealant and any debris are cut and raked out.
- Both sides are cleaned back to sound material and primed if needed.
- Backing rod goes in next, setting the depth and keeping the sealant off the back of the joint.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
Getting ready for the visit
- Tell us about access, such as stairs, a lift or high-level joints
- Tell us about any water getting in
- Mention any sign-in or site rules at work premises
Getting a quote
To get a quote, call 0345 464 0079 or drop us an email with the location and a short description of the problem. You will have a clear quote before work begins.
Advice
Should I try it myself first?
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and doesn’t move well, and the joint depth matters as much as the finish.
Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
Looking after it afterwards
Aftercare is simple, and it makes a real difference:
- Never let anyone fill a movement joint with mortar
- Do not let climbing plants root in the sealant
- Avoid pressure-washing directly into sealant joints
- Walk round the building once a year and look at the joints
Avoid pressure-washing straight into the joints. 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.
When something else is needed
We’d rather tell you now than do work that will not last, so these are the limits:
- Structural movement, which needs a surveyor or engineer
- Walls that need new movement joints cut into them
- Cracks in the bricks or render themselves, away from the joints
If in doubt, phone 0345 464 0079 or email us and we’ll say what we think.
Joints and surfaces we work on
- Concrete & block
- Brickwork movement joints
- Joints between brick and frames
- Render & cladding joints
- Copings & trims
- Façade panels
Work for landlords, hotels and businesses
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Resealing at the right time is simple maintenance.
Common questions in Aldham
Can you help a landlord with a rental near Marks Tey station?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. Just ring 0345 464 0079 or send us an email with the address and what needs doing, and we’ll give you a clear quote.
Do you cover Aldham for external mastic?
Yes, Aldham is within the area we cover. We work across London and the South East. Just call 0345 464 0079 or send us an email with a few details of the job.
Will you leave a mess?
Very little: the area around the joints is protected first, and we clear up the old sealant and our materials before we leave.
What colours does the sealant come in?
We choose a sealant colour to suit the brick, stone or render. There’s a wide choice of exterior colours.
Is the work guaranteed?
Yes, always. There’s a 12-month guarantee on every job, large or small.
How long will you be here?
A typical job takes anything from a few hours to several days, depending on the building, including the preparation. Your quote will say how long we expect yours to take.
Can a movement joint be filled with mortar?
No. A mortar-filled joint cannot move, so the wall cracks somewhere else instead. Use a flexible sealant with backing rod.
Why is there a gap in my brick wall?
Brickwork, render and cladding all move a little, so long walls have planned gaps to take that movement. The gap is sealed with a flexible sealant over backing rod.
Walls and rooflines in Aldham
London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Letting a property close to Marks Tey station? Then outside joints that have cracked can let damp into a rental, so check them between lets. In the older streets around Church of St Margaret and St Catherine, the joints between older walls, newer extensions and the roofline need a sealant that can move.
Aldham is about 5 miles west of Colchester, in Essex. Whether you are in the middle of Aldham or further out, we cover external mastic for every kind of property, from flats and houses to offices and hotels. Aldham is one of 644 towns and villages in Essex we cover. Chelmsford is on our list too, around 17 miles away.
Every address in CO6 is covered for external mastic. Streets in the area include Green Lane, Hardings Close and Church Grove, all of which we cover. Other places close to Aldham include Copford (1 mile south-east), Marks Tey (2 miles south-west), Little Tey (2 miles south-west), Mulberry Green (2 miles south) and Easthorpe (3 miles south). Further out, we also cover Colchester (5 miles east), Braintree (10 miles west), Maldon (13 miles south), Witham (9 miles south-west), Camulodunum (4 miles east) and Halstead (7 miles north-west).
Landmarks near Aldham
Around Aldham, our work takes us to homes and buildings near The Queen's Head Public House and the streets around them. For rail, the closest station is Marks Tey station, about 1.2 miles south. Other landmarks nearby include Birch Castle (4.1 miles south) and Essex County Hospital (4.4 miles east). Green spaces nearby include Iron Latch.