West Sussex · England
Rudgwick External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for householders, landlords and businesses in Rudgwick. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Gaps where render, brick and frames meet
- Rain getting behind render or cladding at a joint
- Movement joints with cracked, split or missing sealant
External mastic for homes and businesses in Rudgwick
External mastic is a job where short cuts show quickly. Overfilled joints, missing backing rod and sealant laid over old sealant rarely last long. We take the old material out and do it properly. If you have plants rooting in failed movement joints and sealant pulling away from one side of the joint, we can put it right, whatever the surface.
External sealant needs dry, clean surfaces, so work around Rudgwick is planned for dry weather. Tell us about access to all sides of the building, including outbuildings and garages.
A 12-month guarantee comes as standard, so you are covered after we have gone.
- Location
- Rudgwick (RH12)
- Region
- West Sussex
- Cover
- A year, on every job
- Quotes
- A clear price before we start
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Outside joints around Rudgwick
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.
If you live in an older home near Holy Trinity Church, older walls, gutters and the joints where extensions meet them need a flexible sealant. Managing a site like Rudgwick Primary School? Then movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. If you let a flat or house near Christs Hospital station, failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Rudgwick is about 6 miles west of Horsham, in West Sussex. From the centre of Rudgwick to the outskirts, external mastic is available for homes and businesses alike. Our area takes in 371 places across West Sussex, large and small. There’s also a page for Crawley, roughly 11 miles from Rudgwick.
Here we cover the RH12 postcode area for external mastic. External mastic is available to properties on Station Road, Thurne Way and Jubilee Road. If you are just outside Rudgwick, we cover Bucks Green (1 mile south-west), Tisman's Common (1 mile west), The Haven (2 miles south), Slinfold (2 miles south-east) and Five Oaks (3 miles south). Larger places within reach include Crawley (11 miles east), Horsham (6 miles east), Broadfield (10 miles east), Storrington (12 miles south), Billingshurst (5 miles south) and Bewbush (10 miles east).
Around Rudgwick
Locally, jobs take us to homes and businesses close to Pennthorpe School and The Queen's Head Public House. For rail, the closest station is Christs Hospital station, roughly 4.6 miles south-east of the centre. Other landmarks nearby include Horsham Hospital (5.6 miles east).
For landlords and businesses
Mouldy or split sealant often shows up at the end of a tenancy. Several properties can be quoted together.
We work for landlords and letting agents as well as householders. Sealant work between tenants is a simple way to keep a property in good order before the next move-in.
Quotes for external mastic in Rudgwick
We quote each job individually. This is what makes a difference:
- Any mould that needs treating
- The size of the job
- Any working-time requirements on site
- The product the joint needs
Rather than a set price list, we price the job in front of us: the amount of work, the old material and the access. 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:
- What the problem is, such as mould, gaps, leaks or cracking
- Whether it has been sealed before
- How many joints, rooms or windows are involved
- The type of property
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we’ll talk you through the work.
Your questions about external mastic in Rudgwick
Will you come out to Rudgwick?
Yes. Rudgwick is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Can you help a landlord with a rental near Christs Hospital station?
Yes, rental work is part of what we do. You can call 0345 464 0079 or email us with the address and a few details, and we’ll give you a fixed price before any work starts.
Are you ARBOMaster approved?
Yes. Mr Mastic is an ARBOMaster approved applicator.
Is it OK to fill a movement joint with cement?
No. Cement or mortar cannot stretch and the joint fails. Where a joint has been mortared, it can often be raked out and sealed properly.
What is a movement joint?
Most straight vertical gaps in brickwork are movement joints. It gives the wall room to move, and it should be sealed with a flexible sealant.
Is the work guaranteed?
Yes: twelve months. If there’s a problem with our work in that time, tell us and we’ll put it right.
Do you use backing rod?
That is backing rod, a closed-cell foam. It keeps the sealant at the right depth and bonded to the sides only, which would stop it stretching.
Will the old sealant be removed?
Yes, always, and completely. New silicone doesn’t stick to old silicone, so any old material comes out before anything new goes in.
What sealant work cannot fix
To be straight with you, some problems need a different trade:
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Structural movement, which needs a surveyor or engineer
- Failed render or damaged cladding panels
If in doubt, call 0345 464 0079 or drop us an email and we’ll say what we think before booking.
Surfaces we seal
- Render & cladding joints
- Façade panels
- Brickwork movement joints
- Copings & trims
- Joints between brick and frames
- Concrete & block
The process
Every visit runs the same way: we check the joints, mask and protect the surrounding surfaces, do the work and tidy away. It usually takes anything from a few hours to several days, depending on the building. Somewhere as small as Rudgwick, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- Each joint is checked and the colour of the new sealant agreed.
- We take out the old sealant until the faces are sound.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- 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
- Keep pets and children clear of the area while we work
- Clear items away from the joints we’re working on
Getting a quote
Want a quote for external mastic? Please phone 0345 464 0079 or drop us an email and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.
Related advice
Leave it or put it right?
Done well, a resealed joint is a neat, straight line that suits the wall. A hurried job with smeared edges and no backing looks worse and fails sooner so it’s worth doing right. In a small place like Rudgwick, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
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.
What you get with us
- Any old sealant cut out fully, not covered over
- Rated 4.9 stars on Google
- Approved under the ARBOMaster scheme
- Trusted Arbo and Everbuild sealants
Take a look at what affects the cost and customer reviews.
How to look after the new joints
Aftercare is simple:
- Make sure movement joints aren’t pointed over
- Look over the joints every year, ideally after winter
- Avoid pressure-washing directly into sealant joints
- Point out the joints to other trades
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.
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.
Other services in Rudgwick
Different surfaces, different methods
Render joints
The face of render can be soft, so a low-modulus sealant is kinder to the joint edges. We prime where the product needs it.
Brickwork movement joints
Clay brickwork grows slightly over its life and moves with the weather. That movement goes into the joint, so the sealant in it must stay soft and stretchy.