West Sussex · England
Kilnwood Vale External Mastic
External mastic across Kilnwood Vale and nearby, with every bit of old sealant taken out first and a 12-month guarantee.
- Movement joints filled with mortar instead of sealant
- Cracked joints where brick meets render or frames
- Plants rooting in failed movement joints
How we handle external mastic in Kilnwood Vale
Where two different materials meet, such as brick and render or blockwork and metal, they move at different rates. A flexible sealant bridges the two. Common call-outs are for movement joints filled with mortar instead of sealant and joints with sealant missing in places, on joints between brick and frames, concrete & block and brickwork movement joints.
Older homes in small places like Kilnwood Vale may be stone, brick or timber-framed, often with later extensions. Where one material meets another is where water normally gets in, and they need the right sealant at the right depth.
The work is guaranteed for twelve months. If something isn’t right with it in that time, tell us and we’ll put it right.
- Where
- Kilnwood Vale (RH12, RH11)
- Wider area
- West Sussex
- Cover
- One year on every job
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
FAQs for Kilnwood Vale
I let a flat near Faygate station. Can you help?
Yes, landlords and agents are among the people we work for. You can ring 0345 464 0079 or send us an email with the details for a clear quote.
Can you do external mastic in Kilnwood Vale?
Yes, Kilnwood Vale is within the area we cover. We work across London and the South East. Just phone 0345 464 0079 or email us with a few details of the job.
Do you hold any approvals?
Yes. We hold ARBOMaster approved applicator status and we are fully insured too.
What colours does the sealant come in?
The sealant colour is picked to suit the wall so the joint blends in. There’s a wide choice of exterior colours.
Do you seal joints where cladding meets other materials?
Yes. Different materials move at different rates, so the joint between them must be flexible. We choose one that suits both surfaces.
Can a movement joint be filled with mortar?
No. Mortar locks the joint solid, so the movement cracks the wall elsewhere. It needs a flexible sealant over backing rod.
Where is Mr Mastic based?
We work from Crawley. We cover Kilnwood Vale and the rest of West Sussex, along with the rest of our area.
How do you reach high-level joints?
Each building is different. Send us pictures and a rough idea of the height, and we’ll confirm what access is needed.
Keeping the joints in good condition
How long the joints last depends on use and care. Here’s what we suggest:
- Fix overflowing gutters above sealed joints
- Don’t let climbing plants root in the sealant
- Check the sealant is paintable before painting near it
- Wash walls gently around the sealant
Make sure anyone working on the wall later knows where the movement joints are. They should be kept open and resealed, not filled.
If you can see gaps, plants or bare sections in a joint, have it checked. Earlier resealing means a smaller job and a better result.
What external mastic looks like in Kilnwood Vale
London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Homes close to St Francis' Church include some older properties, and an extension built onto an older house moves differently, and the joint between them takes the strain. Managing a site like The Bewbush Academy? Then larger buildings have long runs of movement joint that eventually need resealing. If you let a flat or house near Faygate station, failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Kilnwood Vale is about 1 mile south-west of Bewbush, in West Sussex. We provide external mastic to homeowners, landlords and businesses in Kilnwood Vale and the surrounding area. We cover 371 towns and villages across West Sussex.
Our applicators cover all of RH12 and RH11 for external mastic. Streets in the area include Turnpike Lane, Crusades Road and Rookfield Road, and we cover them all. You’ll find Kilnwood Vale on the A264, which makes it straightforward to reach. We also cover Faygate (1 mile west), Colgate (1 mile south), Broadfield (2 miles east), Roffey (3 miles south-west) and Handcross (3 miles south-east). Further out, we also cover Crawley (3 miles east), Horsham (4 miles south-west), Haywards Heath (9 miles south-east), Burgess Hill (11 miles south-east), East Grinstead (10 miles east) and Storrington (15 miles south-west).
What’s near Kilnwood Vale
We work in homes and buildings around Target Hill Park, Holy Trinity CofE Secondary School and Cottesmore School. For rail, the closest station is Faygate station, about 0.9 miles west of the centre. Well-known places in the area include County Mall (2.7 miles north-east) and Crawley Museum (2.7 miles north-east). Green spaces nearby include Warnham LNR and Tilgate Lake.
Work for landlords, hotels and businesses
In hotels, rooms out of use cost money, so the work can be planned room by room around your bookings where we can. We’ve worked in hotels as well as homes and businesses.
If you manage several properties in or around Kilnwood Vale, several properties can go on one quote. Send us the addresses and the work at each.
Also near Kilnwood Vale
Other services in Kilnwood Vale
What sealant work cannot fix
New sealant can’t fix everything, and we will tell you before any work starts. Sealant will not put right:
- Cracking across the wall rather than at a joint
- Subsidence or other structural problems
- Loose or hollow render, which needs re-rendering
If you are not sure, just call 0345 464 0079 or drop us an email and we will give you a straight answer before booking.
Surfaces we seal
- Brickwork movement joints
- Joints between brick and frames
- Concrete & block
- Copings & trims
- Façade panels
- Render & cladding joints
What the job involves on each surface
Cladding and façade panels
Cladding and façade panels are usually separated by sealed joints. We reseal them with a sealant suited to the panel material.
Joints between dissimilar materials
Brick against render, concrete against metal, stone against timber: every change of material is a joint. We seal the joint with a flexible exterior sealant so neither cracks the other.
DIY sealant or a professional job?
Sealing over old silicone is the commonest DIY error. New silicone won’t bond to old, so it lifts and traps water and mould underneath. Everything old must be removed first.
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.
What happens on the day
Before we leave, we go over the finished joints with you and tell you how long to leave it. The visit itself generally takes a few hours for a handful of joints, longer for a whole elevation, depending on the size of the job. For a village or hamlet like Kilnwood Vale, the journey is planned in advance: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- We start by walking round the building and agreeing the joints and the access.
- Every bit of old sealant and any mortar or debris is cut out.
- Joint faces are cleaned back and primed if the sealant needs 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
- Mention any sign-in or site rules at work premises
- Mention any tricky access
- Keep pets and children clear of the area while we work
Ask for a quote
We don’t publish a price list. Instead, your job gets its own clear quote. To get started, call 0345 464 0079 or drop us an email.
Related advice
Quotes for external mastic in Kilnwood Vale
Some jobs are bigger than they look, and some smaller. The main factors:
- Any mould that needs treating
- The product the joint needs
- The number of rooms or windows
- Access and height
Leaving a failed joint generally makes the job bigger, not smaller. If you are not sure whether it needs doing, phone 0345 464 0079 or email us for an honest opinion and a quote.
What to tell us for a quote
Photos by email are helpful but not essential. Try to tell us:
- Pictures of the joints, sent by email
- If someone has resealed it before
- How we’d reach the joints
- What’s wrong with the joints now
Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we’ll talk you through the work.