West Sussex · England
Botolphs External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for homes and businesses in Botolphs and across West Sussex. Fully insured, ARBOMaster approved and guaranteed for a year.
- Panel joints letting water in
- Cracked joints where brick meets render or frames
- Brick movement joints where the sealant has split
Why it’s worth doing now in Botolphs
A failed movement joint lets water into the wall. Dealing with it early keeps the repair to the joint, instead of the wall and finishes around it. Where a wall is exposed, as many are in small places like Botolphs, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
Leaving a failed joint normally makes the job bigger, not smaller. If you are unsure, ring 0345 464 0079 or send us an email for an honest opinion and a quote.
Why book with us
- A 12-month guarantee on all work
- An ARBOMaster approved applicator
- Fully insured
- Sanitary silicone with an anti-fungal additive in wet areas
Read our cost guide or our reviews.
External mastic for homes and businesses in Botolphs
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. If you’re dealing with failed seals between different materials and failed sealant between panels on a façade, we can help, whatever the surface.
Older homes in small places like Botolphs may be stone, brick or timber-framed, often with later extensions. The joints where those materials meet are the weak points.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we’ll sort it.
- Place
- Botolphs (BN44)
- Wider area
- West Sussex
- Cover
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Different surfaces, different methods
Copings and trims
A failed coping joint lets water into the top of the wall. Sealing them early saves the wall below.
Brickwork movement joints
Brick moves with heat and moisture, and grows a little over time. The movement joint takes that up, so the sealant in it must stay soft and stretchy.
Outside joints around Botolphs
With historic houses such as Portslade Manor (about 4.6 miles south-east) nearby, there’s older building stock in the area around Botolphs as well as newer homes. 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.
If you live in an older home near St Botolph's Church, an extension built onto an older house moves differently, and the joint between them takes the strain. For landlords with property near Shoreham-By-Sea station, split movement joints are easy to miss on a rental until damp shows inside.
Botolphs is about 3 miles north-west of Shoreham-by-Sea, in West Sussex. Homes, rented property, offices and hotels in Botolphs can book us for external mastic, old or new, large or small. Every job comes with our 12-month guarantee. Botolphs is one of 371 towns and villages in West Sussex we cover. You can also see our page for Brighton, roughly 8 miles from Botolphs.
Every address in BN44 is covered for external mastic, from the main roads to the quietest streets. Other places close to Botolphs include Upper Beeding (1 mile north-east), Bramber (1 mile north), Steyning (1 mile north-west), Sompting (3 miles south-west) and Lancing (3 miles south). Larger places within reach include Horsham (13 miles north), Worthing (5 miles south-west), Haywards Heath (13 miles north-east), Burgess Hill (10 miles north-east), Littlehampton (11 miles south-west) and Shoreham-by-Sea (3 miles south-east).
Near you in Botolphs
We work in homes and buildings around Steyning Grammar School, among other places. The nearest railway station is Shoreham-By-Sea station, about 3.2 miles south-east. A little further out are Steyning Museum (1.3 miles north-west) and Old Castle (4.9 miles south-west). Open spaces near Botolphs include Steep Down and Mill Hill.
Looking after it afterwards
How long the joints last depends on use and care. We suggest:
- Wash walls gently around the sealant
- Keep water from gutters off the wall
- Point out the joints to other trades
- Look over the joints every year, ideally after winter
Don’t paint over the new sealant unless we’ve said the product is paintable. Many exterior sealants are not designed to be painted.
If you can see gaps, plants or bare sections in a joint, have it checked. Early work is quicker and leaves a better finish.
What we do, step by step
Good joint work is mostly preparation, and we don’t rush it. Every joint is cleaned and dried before new material goes in. All told, the work takes a few hours to a few days, depending on the length of joint and the access. Somewhere as small as Botolphs, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- 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.
- Both sides are cleaned back to sound material and primed if needed.
- Backing rod goes in next, setting the depth and keeping the sealant off the back of the joint.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
Getting ready for the visit
- Let us know about parking restrictions
- For indoor joints, keep the area dry beforehand if you can
- Let us know about earlier repairs to the joints
Getting a quote
To get a quote, ring 0345 464 0079 or email us and tell us where the job is and what the problem looks like. We will send you a clear quote before any work starts.
Advice
Botolphs questions
Do you cover Botolphs for external mastic?
Yes. Our work covers London and the South East, and Botolphs is part of that. You can ring 0345 464 0079 or drop us an email and let us know what needs doing, and we will give you a clear price.
Will you come out to Botolphs?
Yes, smaller places are covered as well as towns. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
How long will you be here?
It depends on the size of the job, but as a guide it takes a few hours for a handful of joints, longer for a whole elevation. We will tell you when we quote.
When is the sealant fully cured?
Cure times vary by product. We tell you how long to leave it before we go.
Is it OK to seal over old sealant?
No. New silicone won’t bond to old silicone, and anything trapped underneath, including mould and water, stays there. We remove it all first.
Do you work for letting agents?
Yes. We work for householders, landlords, letting agents, businesses and hotels.
What information do you need?
A short description and the location, plus pictures if you have them. If we need more, we’ll ask.
Can you reach joints on upper floors?
That depends on the building and the joints. We work on joints that can be reached safely. Tell us about the building and we’ll confirm what access is needed.
Also near Botolphs
More services for Botolphs
DIY sealant or a professional job?
A DIY attempt does not rule out a professional job. We remove it and do the joint properly, so tell us about it when you ask for a quote.
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
Common problems we fix in Botolphs
Buildings move more than people expect. Clay bricks expand slightly over their life, concrete and block shrink, and everything moves with temperature and wet. The sealant in the movement joints takes that strain.
If you can see any of these, it’s time to have the joints looked at:
- Weeds or debris growing in open joints
- Rigid filler in a joint that should flex
- Cracked joints where brick meets render or frames
- Joints with sealant missing in places
For site and facilities teams at buildings such as Upper Beeding Primary School, its movement joints, gutters and trims need looking after like any other building’s.
Comparing quotes
- What preparation is included
- Are they insured?
- Who does the work, and how experienced they are
- What the cure time is
What affects the quote in Botolphs
Jobs vary more than people expect. What affects the quote:
- The type of sealant required
- Whether old sealant or filler has to be cut out
- The number of rooms or windows
- Working hours on commercial sites
We do not show prices on the website, because each job is priced on what it involves. For a quick quote, please call 0345 464 0079 or drop us an email.
What we need to know
When you contact us, these details help:
- The problem you’ve noticed
- Roughly how big the job is
- Where the job is, and your postcode
- Any access issues, like height or stairs
Asking for a quote is easy: tell us what needs doing and where. A few photos by email make the job easier to understand, and we’ll come back to you with a quote.