West Sussex · England
External & façade joints in Cootham, West Sussex
We cover Cootham for sealing brickwork movement joints, render, cladding and façade joints. Old sealant removed completely, joints prepared properly and a 12-month guarantee.
- Movement joints with cracked, split or missing sealant
- Sealant pulling away from one side of the joint
- Rain getting behind render or cladding at a joint
How we handle external mastic in Cootham
Movement joints let brickwork, render and cladding expand and shrink without cracking. 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 brick movement joints where the sealant has split and water getting into walls through failed joints, on render & cladding joints, brickwork movement joints and copings & trims.
Older homes in small places like Cootham may be stone, brick or timber-framed, often with later extensions. The joints where those materials meet are the weak points.
All of our work is guaranteed for twelve months.
- Where
- Cootham (RH20)
- Wider area
- West Sussex
- Guarantee
- One year on every job
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Your questions about external mastic in Cootham
Do you cover Cootham for external mastic?
Yes, Cootham is within the area we cover. We work across London and the South East. You can ring 0345 464 0079 or drop us an email and tell us what needs doing.
Is Cootham within the area you cover?
Yes. Cootham 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.
Do you work at height?
That depends on the building and the joints. Where joints can be reached safely, we’ll do them. Tell us about the building and we’ll confirm what access is needed.
Do you have insurance?
Yes. We are fully insured for domestic and commercial work.
Do you use backing rod?
The foam is closed-cell backing rod. It stops the sealant going in too deep and bonding to three sides.
What’s an expansion joint in brickwork?
Most straight vertical gaps in brickwork are movement joints. It gives the wall room to move and needs a flexible seal, not mortar.
Is the work guaranteed?
Yes. All our work carries a 12-month guarantee.
When will the joints need doing again?
It depends on the exposure, the movement and the product. Treat it as a maintenance item and look at it yearly and reseal when it splits.
When something else is needed
A few problems are outside what sealant work can do:
- Rising or penetrating damp from elsewhere in the wall
- Render that is blown, hollow or coming away
- Cracks in the bricks or render themselves, away from the joints
If you are not sure, just ring 0345 464 0079 or drop us an email and we’ll give you a straight answer before you book.
What we seal
- Concrete & block
- Copings & trims
- Façade panels
- Render & cladding joints
- Brickwork movement joints
- Joints between brick and frames
What affects the quote in Cootham
For a quick quote, just ask. What matters most is:
- Any working-time requirements on site
- Whether there’s mould to deal with
- How many rooms, windows or areas are involved
- The old material and how stubborn it is
The cost reflects the work involved, not guesswork. That’s why we ask about the job first and agree the price before starting.
Helping us quote
Photos by email are helpful but not essential. Try to tell us:
- The address or postcode of the job
- What’s wrong with the joints now
- Pictures of the joints, sent by email
- How we’d reach the joints
We quote each job on its own, so the first step is telling us about yours. Simply call 0345 464 0079 or email us and describe the job and send photos if you have them.
Signs you need external mastic in Cootham
The wrong product in a moving joint is a classic cause. A stiff, general-purpose sealant cannot cope with a joint that moves a lot, so it pulls away from the edges.
Signs it’s time to call us include:
- Joints with sealant missing in places
- Water getting into walls through failed joints
- Hard, crazed mastic that has stopped moving
- Rigid filler in a joint that should flex
Historic houses such as Parham House, about 1.1 miles west, show how far back building around Cootham goes, and older homes nearby need a sealant that suits their walls.
Comparing quotes
- Which colour the sealant will be
- How hidden problems are handled
- Is VAT in the price?
- Whether all the old sealant comes out first
Nearby places to Cootham
Also in Cootham
Aftercare tips
Looking after new joints is easy, and it makes a real difference:
- Check the sealant is paintable before painting near it
- Keep high-pressure jets off the joints
- Never let anyone fill a movement joint with mortar
- Have failed joints looked at early
Look over the joints once a year, ideally after winter. Watch for splits, edges coming away or growth in the joint.
An open movement joint lets rain into the wall every time it pours. Over time it can mean damp inside, stained render or frost-damaged brick, all bigger jobs than a reseal.
Cootham buildings and the weather
Historic houses like Parham House (about 1.1 miles west) are a reminder that the area around Cootham 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. 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.
Managing a site like Storrington Primary School? Then its movement joints, gutters and trims need looking after like any other building’s. Rented homes near Pulborough station change hands often, and split movement joints are easy to miss on a rental until damp shows inside.
Cootham is about 7 miles north-west of Worthing, in West Sussex. For external mastic in and around Cootham, it’s easy to get a quote: please ring 0345 464 0079 or send us an email. We cover West Sussex from our Crawley base, Cootham included. Across West Sussex, we cover 371 places, Cootham among them. For nearby work, see our Brighton page, about 16 miles away.
Our applicators cover all of the RH20 postcode area for external mastic and the streets around it. Whether your property is on Warren Croft, Pulborough Road and The Crescent or a nearby road, our applicators can take on the job. We also cover the places around Cootham: Storrington (1 mile east), Wiggonholt (2 miles north-west), Sullington (2 miles south-east), West Chiltington Common (2 miles north) and Abingworth (2 miles north-east). Further out, we also cover Horsham (12 miles north-east), Worthing (7 miles south-east), Bognor Regis (13 miles south-west), Chichester (15 miles west), Burgess Hill (15 miles east) and Littlehampton (8 miles south).
Landmarks near Cootham
We work in homes and buildings around Rydon Community College, Parham Park and The Crown Inn. Cootham’s nearest station is Pulborough station, roughly 3.3 miles north-west of the centre. A little further out are The Storrington And District Museum (1 mile east) and Amberley Castle (3.2 miles west). The countryside around Cootham includes Chanctonbury Hill and Amberley Wildbrooks RSPB Reserve.
Different surfaces, different methods
Cladding and façade panels
Panel systems often rely on sealant between and around the panels. We reseal them with a sealant suited to the panel material.
Render joints
Cracks along render joints let water in behind the coat. A sound joint keeps the render dry behind and protects the render itself.
Why deal with it now?
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. In a small place like Cootham, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
We don’t show prices on the website, because the cost depends so much on the job itself. Call for a quick quote.
Why book with us
- Quality sealants from Arbo and Everbuild
- 20+ years of sealant experience
- We leave the area clean and tidy
- Sanitary silicone with an anti-fungal additive in wet areas
The process
Good joint work is mostly preparation, so that’s where we spend the time. Joints are cleaned back and dried before anything new goes in. In total, it usually takes a few hours to a few days, depending on the length of joint and the access. Somewhere as small as Cootham, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- First, the joints are inspected and the access agreed.
- We cut out the old mastic and rake out anything in the joint.
- 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
- Tell us if parking is tricky
- On commercial sites, let us know about site rules
- Keep children and pets away from the work area
Getting a quote
To get a quote, phone 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. We will send you a clear quote before any work starts.