West Sussex · England
External & façade joints in Chilgrove, West Sussex
External mastic for Chilgrove, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Water getting into walls through failed joints
- Sealant that has lost its bond to the brick or render
- Panel joints letting water in
Chilgrove: your questions answered
Do you cover smaller places like Chilgrove?
Yes. Chilgrove 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.
Is there a guarantee on external mastic in Chilgrove?
Every job comes with our 12-month guarantee, wherever it is. We are fully insured, and an ARBOMaster approved applicator.
Why do you put foam in the joint first?
Backing rod goes into deeper joints as a matter of course. It controls the depth and stops the sealant bonding to the back.
Do you seal joints where cladding meets other materials?
Yes. Materials like render, brick, metal and uPVC all move differently, so a flexible sealant is needed where they meet. We choose one that suits both surfaces.
How long before the joint can be used?
Many sealants skin over quickly but take longer to cure fully. We will give you the cure time for the product we used.
Can new sealant go over the old?
No, and we never do. It can look neat for a few weeks, but the new layer lifts away from the old one. Removing the old sealant completely is the only lasting way.
Do you have insurance?
Yes. We’re fully insured, and we can confirm the details when we quote.
Why is there a gap in my brick wall?
It’s a deliberate gap that lets the wall expand and contract without cracking. It should be filled with flexible sealant, never mortar.
About our external mastic in Chilgrove
On houses, flats and commercial buildings across Chilgrove, we reseal joints in brickwork, render, cladding and façade panels. The preparation is the same whatever the wall: clean, sound faces and a controlled depth. If you have plants rooting in failed movement joints and old sealant gone brittle and cracked, we can put it right, whatever the surface.
Around Chilgrove, older buildings can be stone, brick or timber-framed, many with extensions added later. The joints where those materials meet are the weak points, and they need the right sealant at the right depth.
Every job is covered by a 12-month guarantee.
- Place
- Chilgrove (PO18)
- Wider area
- West Sussex
- Guarantee
- One year on every job
- Quotes
- A clear price before we start
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Signs you need external mastic in Chilgrove
Sometimes a movement joint was filled with mortar or a rigid filler. With the joint locked solid, the movement turns into cracks elsewhere in the wall.
Any of these means the joints need attention:
- Movement joints filled with mortar instead of sealant
- Sealant pulling away from one side of the joint
- Gaps where render, brick and frames meet
- Water getting into walls through failed joints
In and around Chilgrove, as anywhere, good external mastic starts with a clean, dry, properly prepared joint.
What your quote should include
- Is the old sealant removed completely?
- Is VAT in the price?
- How the colour is chosen
- How long to leave it before use
External mastic in Chilgrove: local notes
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. Historic houses like West Dean House (about 1.6 miles south-east) are a reminder that the area around Chilgrove has older buildings as well as new. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material.
West Dean House, about 1.6 miles south-east, is one of the historic houses in the wider area around Chilgrove, and older homes nearby need a sealant that suits their walls.
Chilgrove is about 6 miles north of Chichester, in West Sussex. From the centre of Chilgrove to the outskirts, external mastic is available for homes and businesses alike, from flats and houses to offices and hotels. Chilgrove is one of 371 places in West Sussex we cover for external mastic. Portsmouth is on our list too, around 14 miles away.
Here we cover the PO18 postcode area for external mastic. Other places close to Chilgrove include East Marden (2 miles west), Didling (3 miles north), Elsted (4 miles north), Compton (4 miles west) and Ingrams Green (4 miles north). Further out, we also cover Bognor Regis (10 miles south-east), Chichester (6 miles south), Selsey (13 miles south), Littlehampton (14 miles south-east), Emsworth (7 miles south-west) and Rustington (15 miles south-east).
What’s near Chilgrove
Other landmarks nearby include Chichester Centre (5.2 miles south) and Museum of Gardening (1.7 miles south-east). Open spaces near Chilgrove include Kingley Vale National Nature Reserve and Bow Hill.
Surface by surface
Concrete and blockwork
Concrete and block walls shrink as they dry and move with temperature. We reseal their joints with backing rod and a flexible product.
Render joints
Render has movement joints and stop beads that need sealing. We reseal them with a flexible exterior sealant that suits the render colour.
What sealant work cannot fix
We won’t take on work that will not last, so here’s what sealant cannot put right:
- Walls that need new movement joints cut into them
- Subsidence or other structural problems
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
If you’re not sure, just ring 0345 464 0079 or send us an email and we’ll give you a straight answer.
Surfaces we seal
- Copings & trims
- Façade panels
- Brickwork movement joints
- Joints between brick and frames
- Concrete & block
- Render & cladding joints
The process
At the end, we look at the finished work together. The visit itself usually takes anything from a few hours to several days, depending on the building, depending on the size of the job. In a small place like Chilgrove, access is normally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We look at every joint and agree a colour to suit the wall.
- We take out the old sealant until the faces are sound.
- Backing rod goes in so the sealant can stretch between the two faces.
- Primer is applied wherever the sealant needs it.
- We gun in low-modulus sealant and tool it neatly.
Getting ready for the visit
- Mention if the joints have been sealed before
- Mention any leaks or damp you’ve noticed
- Mention any sign-in or site rules at work premises
Getting a quote
Want a quote for external mastic? Please call 0345 464 0079 or email us with a few details. You will know what we plan to do, and what it will cost, before any work begins.
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For landlords and businesses
If you manage several properties in or around Chilgrove, 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. Resealing at the right time is simple maintenance.
DIY sealant or a professional job?
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
A DIY attempt doesn’t rule out a professional job. We remove it and do the joint properly, so just mention it when you contact us.
Towns and villages near Chilgrove
Other services in Chilgrove
What happens if it’s left?
Running new sealant over the old bead rarely lasts. The new layer cannot bond properly to old, weathered material, so we always take the old sealant out. Where a wall is exposed, as many are in small places like Chilgrove, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
We do not show prices on the website, because each job is priced on what it involves. For a quick quote, please call 0345 464 0079 or send us an email.
What you get with us
- We are fully insured
- Tidy, careful work
- Domestic, commercial and hotel work
- We agree the colour with you first
Take a look at our cost guide or our reviews.