West Sussex · England
External & façade joints in Tower Hill, West Sussex
Problem with your movement joints in Tower Hill? We remove the old material, prepare the joints and seal them properly, and the work is guaranteed for a year.
- Movement joints filled with mortar instead of sealant
- Rain getting behind render or cladding at a joint
- Leaking joints around cladding and façade panels
External mastic in Tower Hill
Failed sealant is cut out, the depth set with closed-cell backing rod, and the joint resealed with a low-modulus sealant made for outside. The colour is chosen to suit the brick or render. We work on copings & trims, façade panels and brickwork movement joints, and the jobs we see most are joints pointed up with cement by mistake and rain getting behind render or cladding at a joint.
Around Tower Hill, older buildings can be stone, brick or timber-framed, many with extensions added later. Where one material meets another is where water usually gets in, and they need the right sealant at the right depth.
A 12-month guarantee comes with the work, just as it does everywhere we cover.
- Place
- Tower Hill (RH13)
- Region
- West Sussex
- Cover
- One year on every job
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Outside joints around Tower Hill
Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
For an older house near a landmark such as Parish Church of St Mary, the joints between older walls, newer extensions and the roofline need a sealant that can move. For site and facilities teams at buildings such as St John's Catholic Primary School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Tower Hill is about 1 mile south-west of Horsham, in West Sussex. Our applicators cover external mastic for householders, landlords and businesses in Tower Hill. Across West Sussex, we cover 371 places, and Tower Hill is one of them. You can also see our page for Crawley, roughly 8 miles from Tower Hill.
Every address in RH13 is within our area for external mastic, from the main roads to the quietest streets. Streets in the area include Tower Hill, Tower Close and Salisbury Road, and we cover them all. Neighbouring places we cover for external mastic include Broadbridge Heath (1 mile north-west), Horsham (1 mile north-east), Southwater (2 miles south), Itchingfield (2 miles west) and Warnham (2 miles north). Further out, we also cover Crawley (8 miles north-east), Haywards Heath (11 miles east), Burgess Hill (11 miles south-east), East Grinstead (15 miles east), Shoreham-by-Sea (15 miles south) and Broadfield (7 miles north-east).
Landmarks near Tower Hill
Typical jobs here are in homes near Tanbridge House School, Warnham Park and The Doyle School of Design and Technology. For rail, the closest station is Christs Hospital station, roughly 0.9 miles west. Well-known places in the area include Horsham Hospital (1.3 miles north-east) and Christs Hospital School Museum (1.1 miles south-west). Not far away are Warnham LNR.
Places near Tower Hill
What else we do in Tower Hill
Quotes for external mastic in Tower Hill
You’ll get a clear quote before work begins. It’s based on:
- Whether the work is at height
- Whether there’s mould to deal with
- How many areas need sealing
- The amount of work
Leaving a failed joint normally makes the job bigger, not smaller, as water and mould keep getting in. If you are not sure whether it needs doing, ring 0345 464 0079 or email us and we will give you an honest view and a quote.
What we need to know
Photos help, but a description is a good start. Try to tell us:
- What’s wrong with the joints now
- The rough size of the job
- Photos by email, if that is easy
- Whether it’s a home or a business
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we’ll talk you through what we’d do. Whenever you’re ready, ring 0345 464 0079 or drop us an email.
Common questions in Tower Hill
Will you come out to Tower Hill?
Yes, smaller places are covered as well as towns. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Can you do external mastic in Tower Hill?
Yes. We work across London and the South East, and Tower Hill is part of that. You can ring 0345 464 0079 or drop us an email and tell us what needs doing.
When will the joints need doing again?
It varies with how exposed the wall is and how much the joint moves. Signs to watch for are cracking, hardening and gaps at the edges and have them redone then.
Do the sealants smell?
Possibly a little. It fades as the sealant cures.
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.
Is there a guarantee?
Yes, for a year. If anything is not right with the work within the year, let us know and we’ll sort it.
Do you take out the old sealant first?
Yes, always, and completely. New silicone does not stick to old silicone, so any old material comes out before anything new goes in.
Will you leave a mess?
Not at all. We work neatly, protect the area around the joints and tidy up afterwards.
Aftercare tips
Good habits help new joints last longer. Our tips:
- Make sure movement joints are not pointed over
- Keep soil, plants and ivy away from the joints
- Tell anyone working on the walls about the movement joints
- Wash walls gently around the sealant
Give the sealant the cure time we tell you before anything rubs against it. The surface skins over quickly, but full cure takes longer.
Leaks behind façade panels and render often go unseen. When it finally shows inside, the joint may have been open for years so early resealing is worth it.
For landlords and businesses
We work for letting agents and landlords as well as homeowners. Sealant work between tenants is a simple way to keep a property in good order before the next move-in.
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
Why act early in Tower Hill
A properly done movement joint is an even line in a colour that suits the wall. A rushed bead with no backing looks untidy and does not last so it’s worth doing right. Older cottages and farmhouses around Tower Hill 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 the cost depends so much on the job itself. For a quick quote, please call 0345 464 0079 or drop us an email and we’ll talk you through it.
Why book with us
- Sealant colour chosen to suit
- Anti-fungal silicone where joints get wet
- A 12-month guarantee on all work
- More than 20 years in sealant work
Read how sealant jobs are priced and customer reviews.
DIY versus a professional finish
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it does not work out, we can still put it right.
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
Signs you need external mastic in Tower Hill
Using the wrong sealant is another common reason. A stiff, general-purpose sealant can’t cope with a joint that moves a lot, so it pulls away from the edges.
Any of these means the joints need attention:
- Old sealant gone brittle and cracked
- Damp patches traced to an open external joint
- Sealant pulling away from one side of the joint
- Failed sealant between panels on a façade
Rented homes near Christs Hospital station change hands often, and failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Comparing quotes
- Are they insured?
- Is VAT in the price?
- Whether you can choose the colour
- How long the guarantee is
How the visit works
When we arrive, we start by going over the job with you, so there are no surprises. We protect the surfaces around the joints before any work begins. The work normally takes a few hours for a handful of joints, longer for a whole elevation. For a village or hamlet like Tower Hill, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- We start by checking each joint, agreeing the ones to redo and how we will reach them.
- The old mastic and anything lodged in the joint is removed.
- We clean both faces of the joint and prime them where the product calls for it.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.
Getting ready for the visit
- Let us know about parking restrictions
- Let us know about earlier repairs to the joints
- Where the joints are inside, avoid wetting them before we arrive
How to get a quote
For a quote, ring 0345 464 0079 or drop us an email with the location and a short description of the problem. You will have a clear quote before work begins.