West Sussex · England
Bolney External Mastic
Professional external mastic in and around Bolney, with every bit of old sealant taken out first and a one-year guarantee.
- Panel joints letting water in
- Moss and dirt in joints with no sealant left
- Rain getting behind render or cladding at a joint
Bolney: your questions answered
Do you cover smaller places like Bolney?
Yes. Bolney 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.
Can you do external mastic in Bolney?
Yes. Our work covers London and the South East, and Bolney is part of that. You can ring 0345 464 0079 or email us and let us know what needs doing, and we will give you a clear quote.
Does someone need to be in?
It depends on the job. Inside work needs someone to give us access, and for outside work we’ll agree access with you when we book.
What is a movement joint?
A vertical gap in a long brick wall is normally a movement joint. It lets the bricks expand without cracking, and it should be sealed with a flexible sealant.
Do you work for letting agents?
Yes, we do. We work in homes, commercial premises and hotels.
Will the new joint stand out?
Exterior sealants are made in a range of colours, from greys and browns to whites and stone shades. We choose the closest to your brick or render.
Do you hold any approvals?
Yes. We are an ARBOMaster approved applicator.
Can you seal joints between two different 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.
External mastic in Bolney, done properly
A movement joint is only as good as its depth. Closed-cell backing rod sets the depth and stops the sealant sticking to the back, so it bonds to the two sides only and can stretch. Typical jobs include sealant that has lost its bond to the brick or render and failed seals between different materials, on copings & trims, façade panels and brickwork movement joints.
In a village or hamlet like Bolney, older cottages and farm buildings often stand in the open, so walls and rooflines take the full force of wind and rain. Joints on those walls need a sealant that moves with the building and stays in place.
A one-year guarantee comes as standard.
- Location
- Bolney (RH17)
- Wider area
- West Sussex
- Guarantee
- One year on every job
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Nearby places to Bolney
Other services in Bolney
Why it’s worth doing now in Bolney
Running new sealant over the old bead rarely lasts. The new layer can’t bond properly to old, weathered material, so the old joint is cut out fully first. In a small place like Bolney, 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 a rough estimate. That’s why we ask about the job first and send you a clear quote before work begins.
Why us?
- Experience in homes, commercial sites and hotels
- White, clear, grey or coloured to suit, where the product allows
- 4.9 on Google from 180+ five-star reviews
- Every job guaranteed for a year
Read what affects the cost and our reviews.
Different surfaces, different methods
Render joints
Render is weaker at the surface than brick, so a sealant that stretches easily protects the edges. Priming is done where the sealant calls for it.
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.
Work for landlords, hotels and businesses
Whether it’s one flat or a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a 12-month guarantee.
Landlords and letting agents in Bolney can book us as well as homeowners. Sealant work between tenants is a simple way to keep a property in good order.
Honest limits
Some problems need a builder, plumber or other trade rather than us:
- Walls that need new movement joints cut into them
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Render that’s blown, hollow or coming away
If in doubt, call 0345 464 0079 or send us an email and we will say what we think before booking.
Surfaces we seal
- Concrete & block
- Render & cladding joints
- Brickwork movement joints
- Façade panels
- Copings & trims
- Joints between brick and frames
What happens on the day
We bring everything the job needs with us. Once we’ve agreed what’s being done, we protect the area and start. It normally takes a few hours for a handful of joints, longer for a whole elevation. Somewhere as small as Bolney, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- 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.
- The faces are brushed clean and primed where the product requires it.
- We fit closed-cell backing rod to control the depth.
- We apply the sealant, tool it and check the whole run.
Getting ready for the visit
- Let us know if you’ve seen damp or leaks
- Try not to wet indoor joints just before the visit
- For business premises, tell us about site rules or sign-in
Get a quote
Need a quote? Please ring 0345 464 0079 or send us an email and tell us about the job. We’ll explain what we’d do and give you a clear price before we start.
Read more
Looking after it afterwards
So the new joints stay in good condition:
- Ask before painting over external sealant
- Do not let climbing plants root in the sealant
- Avoid pressure-washing directly into sealant joints
- Have failed joints looked at early
Keep the joints clear of soil, plants and climbing growth. Damp material against the sealant shortens its life.
Gaps, plants or missing sealant in a joint are worth getting looked at. Earlier resealing means a smaller job and a better result.
Outside joints around Bolney
Historic houses like Ockenden Manor (about 2.5 miles east) are a reminder that the area around Bolney has older buildings as well as new. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth. London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Managing a site like Bolney CofE Primary School? Then its movement joints, gutters and trims need looking after like any other building’s. Homes close to St Mary Magdalene's Church include some older properties, and old and new materials meet at the roofline and walls, which is where sealant earns its keep. If you let a flat or house near Wivelsfield station, outside joints that have cracked can let damp into a rental, so check them between lets.
Bolney is about 4 miles north-west of Burgess Hill, in West Sussex. We provide external mastic to homes and businesses in Bolney, as part of our work across West Sussex. Across West Sussex, we cover 371 places, Bolney among them. Crawley is on our list too, around 8 miles away.
Jobs for external mastic in RH17 works the same way as everywhere else we cover. Local streets include The Street, Cherry Lane and Top Street. We also cover the places around Bolney: Crosspost (1 mile south-west), Twineham Green (2 miles south), Twineham (2 miles south), Wineham (3 miles south-west) and Kent Street (3 miles south-west). Larger places within reach include Crawley (8 miles north), Horsham (7 miles north-west), Worthing (15 miles south-west), Haywards Heath (5 miles east), Burgess Hill (4 miles south-east) and East Grinstead (12 miles north-east).
Around Bolney
The closest station to Bolney is Wivelsfield station, roughly 4.1 miles south-east. Nearby you’ll also find The Dene Hospital (2.6 miles south-east) and Cuckfield Museum (2.6 miles east). Not far away are Blunts Wood and Paiges Meadow.
Should I try it myself first?
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and doesn’t move well, and getting the depth right matters as much as the look.
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, then guaranteed for a year.