West Sussex · England
External & façade joints in Monk's Gate, West Sussex
Professional external mastic in and around Monk's Gate, with every bit of old sealant taken out first.
- Cracked joints where brick meets render or frames
- Movement joints with cracked, split or missing sealant
- Weathered mastic that no longer stretches
Outside joints around Monk's Gate
Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
If you live in an older home near Church of the Good Shepherd, an extension built onto an older house moves differently, and the joint between them takes the strain. Letting a property close to Horsham station? Then split movement joints are easy to miss on a rental until damp shows inside. Managing a site like St Andrew's CofE Primary School? Then movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Monk's Gate is about 3 miles south-east of Horsham, in West Sussex. We carry out external mastic for homeowners, landlords and businesses in Monk's Gate and nearby. Monk's Gate is one of 371 towns and villages in West Sussex we cover for external mastic. You can also see our page for Crawley, about 7 miles away.
All of RH13 is covered for external mastic. External mastic is available to properties on Coolhurst Close, Nuthurst Road and Brighton Road and the roads around them. We also cover Mannings Heath (1 mile north), Lower Beeding (1 mile east), Crabtree (2 miles south-east), Plummers Plain (2 miles east) and Roffey (3 miles north). Larger places within reach include Crawley (7 miles north-east), Horsham (3 miles north-west), Worthing (15 miles south), Haywards Heath (9 miles east), Burgess Hill (9 miles south-east) and East Grinstead (14 miles north-east).
Local landmarks in Monk's Gate
Typical jobs here are in homes near The Dun Horse pub, Newells Preparatory School and The Forest School and the streets around them. Monk's Gate’s nearest station is Horsham station, about 2.6 miles north-west. A little further out are Christs Hospital School Museum (3.4 miles west) and Horsham Hospital (3 miles north-west). Not far away are Warnham LNR.
External mastic in Monk's Gate, done properly
For buildings in Monk's Gate, we reseal external joints of all kinds, from brick movement joints to cladding panels. The preparation is the same whatever the wall: clean joint faces and the right depth. Typical jobs include rigid filler in a joint that should flex and sealant pulling away from one side of the joint, on copings & trims, joints between brick and frames and concrete & block.
Outside joints can only be sealed when they’re dry, so work in Monk's Gate is booked around the forecast. Let us know about access to every wall, plus any garages or outbuildings.
There’s a 12-month guarantee on every job, whatever its size.
- Place
- Monk's Gate (RH13)
- Wider area
- West Sussex
- Guarantee
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
When something else is needed
Some problems need a builder, plumber or other trade rather than us:
- Cracking across the wall rather than at a joint
- Damp that isn’t coming from the joint
- Subsidence or other structural problems
If you are not sure, just call 0345 464 0079 or send us an email and we will give you a straight answer.
What we seal
- Copings & trims
- Concrete & block
- Joints between brick and frames
- Façade panels
- Brickwork movement joints
- Render & cladding joints
Quotes for external mastic in Monk's Gate
The price is agreed before any work begins. It’s based on:
- The product the joint needs
- How easy the joints are to reach
- How much there is to do
- Whether there’s mould to deal with
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.
What we need to know
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- The address or postcode of the job
- How we’d reach the joints
- Roughly how big the job is
- Pictures of the joints, sent by email
Asking for a quote is easy: let us know the job and the location, and roughly how big it is. A few photos by email make the job easier to understand, and we’ll take it from there.
How the visit works
When we arrive, we look over the joints with you first, so there are no surprises. Surfaces next to the work are protected before any work begins. Most jobs take a few hours to a few days, depending on the length of joint and the access. Somewhere like Monk's Gate needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- 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
- For business premises, tell us about site rules or sign-in
- Where the joints are inside, avoid wetting them before we arrive
- Clear items away from the joints we are working on
Get a quote
Need a quote? Please call 0345 464 0079 or email us and tell us about the job. We’ll explain what we’d do and give you a clear quote before any work starts.
Read more
Common questions in Monk's Gate
Can you help a landlord with a rental near Horsham station?
Yes, landlords and agents are among the people we work for. You can call 0345 464 0079 or send us an email with the details for a clear quote.
Is Monk's Gate in your area for external mastic?
Yes. We work across London and the South East, and Monk's Gate is part of that. Just ring 0345 464 0079 or send us an email with a few details of the job, and we will give you a clear price.
Does someone need to be in?
We need access to the joints, so we will agree that with you when we book. Indoors, that generally means someone at home.
How long will you be here?
A typical job takes anything from a few hours to several days, depending on the building. We’ll confirm how long when we quote.
What sealant do you use?
Products from Arbo and Everbuild, among others, picked for each joint. We’ll tell you what we are using and why.
Can you seal over the old sealant?
No. Fresh sealant does not stick to old sealant, and anything trapped underneath, including mould and water, stays there. It all has to come out first.
Are you fully insured?
Yes, we are fully insured.
Will the old sealant be removed?
Yes. We cut out all the old sealant and clean the joint before resealing.
What happens if it’s left?
An open joint keeps letting water into the wall with every downpour. Wet masonry is more easily damaged by frost, so the damage spreads beyond the joint. Older cottages and farmhouses around Monk's Gate can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
There are no prices on our website, because each job is priced on what it involves. Call for a quick quote and we will talk you through it.
Why choose Mr Mastic in Monk's Gate
- Trusted Arbo and Everbuild sealants
- More than 20 years in sealant work
- Tidy, careful work
- White, clear, grey or coloured to suit, where the product allows
Read what affects the cost and what customers say.
Towns and villages near Monk's Gate
What else we do in Monk's Gate
What the job involves on each surface
Cladding and façade panels
Panels heat up and cool down quickly, so the joints work hard every day. We choose the product to suit.
Concrete and blockwork
Blockwork and concrete shrink over time and move with the seasons. We reseal their joints with backing rod and a flexible product.
Keeping the joints in good condition
How long the joints last depends on use and care. We suggest:
- Ask before painting over external sealant
- Avoid pressure-washing directly into sealant joints
- Never let anyone fill a movement joint with mortar
- Have failed joints looked at early
Avoid pressure-washing straight into the joints. A strong jet can damage the edges of the bead over time.
If you can see gaps, plants or bare sections in a joint, have it checked. Early work is quicker and leaves a better finish.
Work for landlords, hotels and businesses
Hotels need rooms back in use, 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.
We work for letting agents and landlords as well as householders. Resealing between tenancies is a simple way to keep a property in good order.