West Sussex · England
External & façade joints in Coldwaltham, West Sussex
Sealing brickwork movement joints, render, cladding and façade joints for householders, landlords and businesses in Coldwaltham. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Damp patches traced to an open external joint
- Joints where the bead has come unstuck
- Weeds or debris growing in open joints
What affects the cost of external mastic
The price is agreed before any work begins. It takes into account:
- Whether old sealant or filler has to be cut out
- Whether the work is at height
- The type of sealant required
- How many rooms, windows or areas are involved
Rather than a set price list, we price the job in front of us: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
Asking for a quote
Photos help, but a description is a good start. Please mention:
- The problem you’ve noticed
- Access, such as stairs, a lift or height
- A few photos by email, if you can
- How many joints, rooms or windows are involved
There’s no standard price list. Instead, your job gets its own clear quote. To get started, ring 0345 464 0079 or email us.
External mastic in Coldwaltham
Joints in render and cladding are easy to overlook until a damp patch appears. We look over the joints, agree the ones to renew and reseal with a flexible, weatherproof product in a colour to suit. Typical jobs include sealant pulling away from one side of the joint and weeds or debris growing in open joints, across concrete & block, brickwork movement joints and façade panels.
Older homes in small places like Coldwaltham may be stone, brick or timber-framed, often with later extensions. The joints where those materials meet are the weak points, and they need the right sealant at the right depth.
Your job is guaranteed for a year, as with all our work.
- Where
- Coldwaltham (RH20)
- Wider area
- West Sussex
- Guarantee
- 12 months on all our work
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Aftercare tips
So the new joints stay in good condition:
- Check the sealant is paintable before painting near it
- Have failed joints looked at early
- Show decorators and builders where the movement joints are
- Fix overflowing gutters above sealed joints
Make sure anyone working on the wall later knows where the movement joints are. They should be kept open and resealed, not filled.
An open movement joint lets rain into the wall every time it pours. That can lead to damp patches, staining and frost damage.
Landlord and commercial work in Coldwaltham
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance that we can handle for you.
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. We’ve worked in hotels as well as homes and businesses.
Common questions in Coldwaltham
Can you help a landlord with a rental near Pulborough station?
Yes. We work for landlords and letting agents as well as householders, and several properties can be quoted together. Just call 0345 464 0079 or send us an email with the address and what needs doing, and we’ll give you a clear quote.
Is Coldwaltham in your area for external mastic?
Yes. Our work covers London and the South East, and Coldwaltham is part of that. Just call 0345 464 0079 or send us an email with a few details of the job.
Can you quote for more than one area?
Of course. Combining jobs makes good use of the visit, so mention them when you ask for a quote.
Do you work for hotels and businesses?
Yes. We’ve worked for hotels, offices and other businesses.
Do you hold any approvals?
Yes. We’re an ARBOMaster approved applicator.
Which products do you use?
Products from Arbo and Everbuild, among others, picked for each joint. We’ll tell you what we’re using and why.
Why is there a gap in my brick wall?
It’s a deliberate gap that lets the wall expand and contract without cracking. It’s sealed with a flexible sealant, not mortar.
Do you use backing rod?
Closed-cell backing rod sets the depth of the sealant and stops it sticking to the back of the joint. Then the sealant bonds to two faces and can move.
Honest limits
We’d rather tell you now than do work that won’t last, so these are the limits:
- Walls that need new movement joints cut into them
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Cracking across the wall rather than at a joint
Not sure which it is? You can phone 0345 464 0079 or email us and we’ll tell you honestly.
Joints and surfaces we work on
- Concrete & block
- Render & cladding joints
- Copings & trims
- Joints between brick and frames
- Brickwork movement joints
- Façade panels
Towns and villages near Coldwaltham
Also in Coldwaltham
What we do, step by step
When we arrive, we start by going over the job with you. Surfaces next to the work are protected before work begins. The work generally takes a few hours to a few days, depending on the length of joint and the access. In a small place like Coldwaltham, access is usually the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- 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.
- We apply the sealant, tool it and check the whole run.
Getting ready for the visit
- Tell us about access, such as stairs, a lift or high-level joints
- Tell us if parking is tricky
- Keep children and pets away from the work area
Get a quote
Getting a quote is simple: tell us what needs doing and where, and roughly how big it is. Photos by email help us understand the job, and we will take it from there.
Advice
Coldwaltham buildings and the weather
Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. Historic houses like Old Place Manor (about 2 miles north-east) are a reminder that the area around Coldwaltham 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.
Managing a site like St James' CofE Primary School? Then larger buildings have long runs of movement joint that eventually need resealing. In the older streets around The Parish Church of St Giles, old and new materials meet at the roofline and walls, which is where sealant earns its keep. For landlords with property near Pulborough station, failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Coldwaltham is about 9 miles north of Littlehampton, in West Sussex. We carry out external mastic for householders, landlords and businesses in Coldwaltham and nearby, as part of our work across West Sussex. Across West Sussex, we cover 371 places, and Coldwaltham is one of them. Our Crawley page covers work nearby (19 miles or so).
Jobs for external mastic in RH20 works the same way as everywhere else we cover. That includes homes and businesses on London Road, Old London Road and Silverdale. Other places close to Coldwaltham include Watersfield (1 mile south-west), Hardham (1 mile north-east), Lower Horncroft (1 mile north-west), Coates (2 miles north-west) and Fittleworth (2 miles north-west). Further out, we also cover Horsham (13 miles north-east), Worthing (10 miles south-east), Bognor Regis (12 miles south-west), Chichester (12 miles south-west), Littlehampton (9 miles south) and Shoreham-by-Sea (14 miles south-east).
Around Coldwaltham
Typical jobs here are in homes near The Labouring Man pub and Lodge Hill Residential Centre, among other places. For rail, the closest station is Pulborough station, roughly 1.8 miles north-east. Well-known places in the area include Amberley Museum (2.8 miles south) and Amberley Castle (2 miles south). Not far away are Amberley Wildbrooks RSPB Reserve and Bignor Hill.
What the job involves on each surface
Brickwork movement joints
Vertical joints in long brick walls let the brickwork expand without cracking. They’re resealed over backing rod with a low-modulus sealant coloured to suit the wall.
Joints between dissimilar materials
Joints where frames, sills or panels meet the wall are common leak points. The old joint is removed and a sealant that bonds to both sides goes in.
DIY sealant or a professional job?
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
A DIY attempt does not rule out a professional job. We remove it and do the joint properly.