West Sussex · England
Lyminster External Mastic
Professional external mastic in and around Lyminster, with old sealant always removed completely.
- Water getting into walls through failed joints
- Old sealant gone brittle and cracked
- Cracked joints where brick meets render or frames
What we do, step by step
You do not need to clear the whole room or building before we come, only the area right around the joints. We protect the rest, and the work takes a few hours to a few days, depending on the length of joint and the access in most cases. For a village or hamlet like Lyminster, the journey is planned in advance: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- We start by walking round the building and agreeing the joints and the access.
- We cut out the old mastic and rake out anything in the joint.
- Joint faces are cleaned back and primed if the sealant needs it.
- Backing rod sized to the joint goes in to set the depth.
- We apply the sealant, tool it and check the whole run.
Getting ready for the visit
- For business premises, tell us about site rules or sign-in
- Keep children and pets away from the work area
- Mention any leaks or damp you’ve noticed
Ask for a quote
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we will talk you through the work before giving you a price.
Advice
External mastic for homes and businesses in Lyminster
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 strip the joint back and start again. Common call-outs are for joints with sealant missing in places and weeds or debris growing in open joints, across render & cladding joints, concrete & block and copings & trims.
Outside joints can only be sealed when they’re dry, so work in Lyminster is booked around the forecast. Tell us about access to all sides of the building, including outbuildings and garages.
A one-year guarantee comes as standard, so you’re covered after we’ve gone.
- Where
- Lyminster (BN17)
- Wider area
- West Sussex
- Guarantee
- One year on every job
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Leave it or put it right?
Pointing a movement joint with mortar might seem a neat fix, but it locks the joint solid. The movement then cracks the brickwork or render nearby. A flexible sealant over backing rod is what the joint needs. Where a wall is exposed, as many are in small places like Lyminster, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
We don’t show prices on the website, because the cost depends so much on the job itself. Call for a quick quote and we’ll talk you through it.
Why us?
- Fully insured
- Arbo and Everbuild products
- You choose the colour before work begins
- Homes, businesses and hotels
See what affects the cost and what customers say.
Towns and villages near Lyminster
More services for Lyminster
What external mastic looks like in Lyminster
Lyminster is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. That is hard on movement joints and outside wall joints, especially on the side facing the sea. Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Homes close to The Parish Church of St Mary Magdalen include some older properties, and older walls, gutters and the joints where extensions meet them need a flexible sealant. Rented homes near Arundel station change hands often, and outside joints that have cracked can let damp into a rental, so check them between lets.
Lyminster is about 1 mile north-west of Littlehampton, in West Sussex. Our applicators cover external mastic for homes and businesses in Lyminster. Lyminster is one of 371 towns and villages in West Sussex we cover. For nearby work, see our Brighton page (18 miles or so).
We cover every part of the BN17 postcode area for external mastic and the streets around it. Streets in the area include Arundel Drive, Old Mead Road and Lyminster Road. We also cover Wick (1 mile south), Toddington (1 mile south-east), Crossbush (1 mile north-east), Tortington (1 mile west) and Littlehampton (1 mile south-east). Within a short drive, we also cover Worthing (6 miles east), Bognor Regis (7 miles south-west), Chichester (10 miles west), Selsey (12 miles south-west), Shoreham-by-Sea (12 miles east) and Lancing (10 miles east).
Landmarks near Lyminster
We work in homes and buildings around The 6 Bells Public House, The Littlehampton Academy and Littlehampton College. For rail, the closest station is Arundel station, about 1.3 miles north. Nearby you’ll also find Arundel and District Hospital (1.9 miles north-west) and Rustington Museum (2.3 miles south-east). For a walk, there’s Highdown Hill and WWT Arundel.
For landlords and businesses
We regularly work with letting and managing agents. Tell us the address, the job and how access works.
For anyone letting property in or around Lyminster, several properties can go on one quote. Just tell us the addresses and what each one needs.
When something else is needed
We’d rather tell you now than do work that will not last, so here’s what sealant cannot put right:
- Structural movement, which needs a surveyor or engineer
- Rising or penetrating damp from elsewhere in the wall
- Walls that need new movement joints cut into them
If in doubt, call 0345 464 0079 or email us and we’ll say what we think.
Surfaces we seal
- Joints between brick and frames
- Render & cladding joints
- Brickwork movement joints
- Copings & trims
- Façade panels
- Concrete & block
When to call us in Lyminster
Joints sealed without backing rod, or far too deep, rarely last. Sealant bonded to three sides has nowhere to go and tears as soon as the joint widens.
Look out for these signs:
- Rain getting behind render or cladding at a joint
- Movement joints with cracked, split or missing sealant
- Joints where the bead has come unstuck
- Failed sealant between panels on a façade
Schools such as Lyminster Primary School are buildings too, and larger buildings have long runs of movement joint that eventually need resealing.
Questions to ask before booking
- Which sealant they’ll use, and why
- How the surfaces are prepared before sealing
- Whether VAT is included
- Is the old sealant removed completely?
What affects the quote in Lyminster
For a quick quote, just ask. What matters most is:
- Mould in or behind the old joints
- The type of sealant required
- Whether old sealant or filler has to be cut out
- When we can work, for business premises
Every job is a little different, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all play a part, and we’ll explain the quote if you ask.
Helping us quote
To make quoting easier, please include:
- A few photos by email, if you can
- How we’d reach the joints
- Where the property is
- Whether it has been sealed before
Every job is quoted individually. Simply ring 0345 464 0079 or send us an email and describe the job, and photos are welcome.
Looking after it afterwards
Good habits help new joints last longer. A few tips:
- Avoid pressure-washing directly into sealant joints
- Check the sealant is paintable before painting near it
- Get split or bare joints resealed while the damage is small
- Keep soil, plants and ivy away from the joints
Do not paint over the new sealant unless we have said the product is paintable. Paint can crack on a flexible joint, and paint can crack as the joint moves.
Small splits are the time to act. Then it’s a straightforward cut-out and reseal with no damage behind it to deal with.
Your questions about external mastic in Lyminster
Is Lyminster within the area you cover?
Yes, we do. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Can you help a landlord with a rental near Arundel station?
Yes, we work for landlords and letting agents. Just ring 0345 464 0079 or email us and tell us about the property, and we’ll give you a clear quote.
What do you need from me for a quote?
A short description and the location. If we need more, we will ask.
Do you work for hotels and businesses?
Yes. We work in offices, washrooms, hotels and other commercial premises. Working times can be discussed when we quote.
Do you take out the old sealant first?
Yes. All of the old material is cut out and the joint cleaned before applying anything new.
Is the work guaranteed?
Yes, always. Each job is guaranteed for twelve months, large or small.
Do I need to be at home?
It depends on the job. Inside work needs someone to give us access, while outside work can sometimes be arranged differently.
Can you quote for more than one area?
Yes, and it often makes sense. Doing several areas at once is usually more efficient.