Surrey · England
External & façade joints in Chilworth, Surrey
External mastic across Chilworth and nearby, with old sealant always removed completely and a 12-month guarantee.
- Failed sealant between panels on a façade
- Hard, crazed mastic that has stopped moving
- Cracked joints where brick meets render or frames
External mastic in Chilworth, done properly
We’re ARBOMaster approved applicators, and each external joint gets a sealant suited to it. Some surfaces need a primer before sealing, and we don’t skip that step. We are often asked to deal with rain getting behind render or cladding at a joint and joints where the bead has come unstuck, on copings & trims, brickwork movement joints and render & cladding joints.
Outside joints can only be sealed when they’re dry, so work in Chilworth is booked around the forecast. Let us know about access to every wall, plus any garages or outbuildings.
Big or small, it’s backed by our 12-month guarantee in Chilworth and across Surrey.
- Where
- Chilworth (GU4)
- Wider area
- Surrey
- Cover
- A year, on every job
- Quotes
- A clear price before we start
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
What happens on the day
At the end, we look at the finished work together. The visit itself normally takes a few hours for a handful of joints, longer for a whole elevation, depending on the size of the job. In a small place like Chilworth, access is generally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First we look over the joints with you, agree which to renew and talk through access.
- The old mastic and anything lodged in the joint is removed.
- The joint faces are cleaned and primed where the sealant needs it.
- Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
- The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.
How to prepare
- Clear the area around the work
- Let us know about parking restrictions
- For indoor joints, keep the area dry beforehand if you can
How to get a quote
We do not publish a price list. Instead, your job gets its own clear quote. To arrange one, ring 0345 464 0079 or send us an email.
Read more
Leave it or put it right?
A failed movement joint lets water into the wall. Resealing early keeps the job to the joint itself, instead of the wall and finishes around it. In a small place like Chilworth, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
The cost reflects the work involved, not guesswork. That’s why we ask about the job first and agree the price before starting.
Why Chilworth clients choose us
- We’re fully insured
- An ARBOMaster approved applicator
- Colour picked to suit the job
- Every job guaranteed for a year
When something else is needed
To be straight with you, there are a few things sealant will not fix:
- Loose or hollow render, which needs re-rendering
- Cracks in the bricks or render themselves, away from the joints
- Structural movement, which needs a surveyor or engineer
Not sure which it is? You can call 0345 464 0079 or email us and we’ll tell you honestly before you book.
Joints and surfaces we work on
- Brickwork movement joints
- Joints between brick and frames
- Façade panels
- Copings & trims
- Concrete & block
- Render & cladding joints
FAQs for Chilworth
Do you work for landlords with property near Chilworth station?
Yes, rental work is part of what we do. You can phone 0345 464 0079 or send us an email with the address and a few details, and we’ll give you a fixed price before work begins.
Will you come out to Chilworth?
Yes, we do. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
How long does external mastic last?
That varies with the weather the wall faces, how much it moves and the sealant used. Sealant is a maintenance item, so check the joints once a year and reseal when it splits.
Where are you based?
We are based in Crawley, West Sussex, and we work across South East England, London and Scotland.
Is it OK to fill a movement joint with cement?
No. Mortar locks the joint solid, so the wall cracks somewhere else instead. It needs a flexible sealant over backing rod.
Do you hold any approvals?
Yes. We are approved under the ARBOMaster scheme, the approved applicator scheme for Arbo sealants.
What information do you need?
A short description and the location. If we need more, we will ask.
Can you do several jobs on one visit?
Yes, we can. More than one area can go on one quote.
Keeping the joints in good condition
Simple care keeps the joints in good condition. We recommend:
- Act on the first splits you see
- Wash walls gently around the sealant
- Look over the joints every year, ideally after winter
- Deal with leaking gutters that soak the joints below
Only paint over the joint if we’ve confirmed the sealant can take paint. Many exterior sealants are not designed to be painted, and paint can crack as the joint moves.
Leaks behind façade panels and render often go unseen. By the time there’s a damp patch, the damage can be well established so early resealing is worth it.
Surface by surface
Concrete and blockwork
Big joints in concrete need careful depth control. We size the backing rod to the gap so the sealant isn’t too deep.
Copings and trims
A failed coping joint lets water into the top of the wall. Resealing them is a small job that protects a lot.
Landlords, agents and businesses in Chilworth
For anyone letting property in or around Chilworth, jobs at different addresses can go on one quote. Just tell us the addresses and what each one needs.
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance that we can handle for you.
Quotes for external mastic in Chilworth
We quote each job individually. These are the things that affect it:
- The number and length of the joints
- Whether there’s mould to deal with
- How many rooms, windows or areas are involved
- Whether old sealant or filler has to be cut out
The cost depends on the size of the job, how much old material has to come out and how easy the joints are to reach. You’ll have a clear quote before any work starts, so you know where you stand.
What to tell us for a quote
To make quoting easier, let us know:
- Where the property is
- Roughly how big the job is
- Whether it’s a home or a business
- Whether it has been sealed before
If you are in Chilworth and need external mastic, call 0345 464 0079 or send us an email. Tell us what the problem is and where, and we’ll agree the price before any work begins.
Walls and rooflines in Chilworth
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. Historic houses like Chilworth Manor (about 0.4 miles north) are a reminder that the area around Chilworth has older buildings as well as new. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth.
Managing a site like Chilworth CofE (Aided) Infant School? Then its movement joints, gutters and trims need looking after like any other building’s. If you live in an older home near Church of St Thomas, the joints between older walls, newer extensions and the roofline need a sealant that can move. Letting a property close to Chilworth station? Then failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Chilworth is about 3 miles south-east of Guildford, in Surrey. Homes, rented property, offices and hotels in Chilworth can book us for external mastic, old or new, large or small. Every job comes with our one-year guarantee. Chilworth is one of 395 places in Surrey where we work. You can also see our page for Crawley, about 17 miles away.
Here we cover the GU4 postcode area for external mastic. That includes homes and businesses on Old Manor Gardens, Redwood Grove and Blacksmith Lane and the roads around them. Chilworth is on the A248, which makes it straightforward to reach with everything needed for external mastic. We also cover Blackheath (1 mile south-east), East Shalford (1 mile west), Shalford (1 mile west), Broadford (2 miles west) and Abbotswood (2 miles north-west). Within a short drive, we also cover Guildford (3 miles north-west), Woking (7 miles north), Camberley (12 miles north-west), Epsom (14 miles north-east), Farnham (11 miles west) and Ewell (15 miles north-east).
Local landmarks in Chilworth
Locally, jobs take us to homes and businesses close to The Percy Arms, St Peter's Catholic School and Shalford Mill, among other places. There’s a railway station in Chilworth itself: Chilworth station. A little further out are Guildford House (2.2 miles north-west) and Guildford Castle (2.1 miles north-west). Green spaces nearby include Silent Pool and St Martha's Hill.