West Sussex · England
Hammerpot External Mastic
External mastic for Hammerpot and the surrounding area: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Failed seals between different materials
- Rain getting behind render or cladding at a joint
- Joints where the bead has come unstuck
When it isn’t the sealant
New sealant can’t fix everything, and we’ll tell you before work begins. It will not solve:
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Failed render or damaged cladding panels
- Cracked brickwork or render that needs a builder or plasterer
If in doubt, ring 0345 464 0079 or email us and we will say what we think before booking.
What we seal
- Façade panels
- Concrete & block
- Render & cladding joints
- Joints between brick and frames
- Brickwork movement joints
- Copings & trims
External mastic for homes and businesses in Hammerpot
For buildings in Hammerpot, we reseal external joints of all kinds, from brick movement joints to cladding panels. Every joint gets the same careful preparation: clean, sound faces and a controlled depth. Typical jobs include rain getting behind render or cladding at a joint and weeds or debris growing in open joints, on joints between brick and frames, façade panels and render & cladding joints.
In a village or hamlet like Hammerpot, older cottages and farm buildings often stand in the open, so walls and rooflines take the full force of wind and rain. Joints on those walls need a sealant that moves with the building and stays in place.
Our work is backed for twelve months, in Hammerpot and everywhere else we cover.
- Location
- Hammerpot (BN16)
- Wider area
- West Sussex
- Cover
- A year, on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Hammerpot: your questions answered
Is Hammerpot within the area you cover?
Yes, Hammerpot is covered. We work across London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Do you work for landlords with property near Angmering station?
Yes. We work for landlords and letting agents as well as homeowners. Just phone 0345 464 0079 or email us with the address and what needs doing, and we’ll give you a clear price.
Can you do several jobs on one visit?
Yes, we can. More than one area can be quoted together.
Are you ARBOMaster approved?
Yes. Mr Mastic is an ARBOMaster approved applicator, and we’re fully insured.
What do you need from me for a quote?
A short description and the location, with photos by email if possible. We will ask anything else we need to know.
How do I get a quote for external mastic in Hammerpot?
It depends on the job, so we quote each one individually. To get one, ring 0345 464 0079 or email us with a short description of the job.
Should I point up the gap in my brickwork?
No. Cement or mortar can’t stretch. Where a joint has been mortared, it can often be raked out and sealed properly.
Do I have to be there?
It depends on the job. Inside work needs someone to give us access.
How we quote for external mastic
Jobs vary more than people expect. What affects the quote:
- The type of sealant required
- How much old sealant there is and how hard it is to remove
- Any working-time requirements on site
- How many areas need sealing
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 to tell us for a quote
Photos help, but a description is a good start. Please mention:
- If someone has resealed it before
- Where the job is, and your postcode
- What’s wrong with the joints now
- If it’s domestic, commercial or a hotel
Every job is quoted individually, so the first step is telling us about yours. Simply ring 0345 464 0079 or drop us an email and describe the job.
The process
Once we’re on site, we compare the joints with what we discussed. If we find something unexpected, we talk it through with you first. After that, the work takes a few hours for a handful of joints, longer for a whole elevation. Somewhere like Hammerpot 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 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.
- Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
- The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.
Before we arrive
- For business premises, tell us about site rules or sign-in
- Let us know if you’ve seen damp or leaks
- Clear the area around the work
How to get a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is. Whenever you’re ready, call 0345 464 0079 or email us.
Advice
Common problems we fix in Hammerpot
Buildings move more than people expect. Brickwork grows a little over the years, blockwork and concrete shrink, and all of it moves with heat and moisture. All of that ends up in the joint sealant.
Signs it’s time to call us include:
- Panel joints letting water in
- Movement joints filled with mortar instead of sealant
- Water getting into walls through failed joints
- Old sealant gone brittle and cracked
Homes close to The Parish Church of St Margaret include some older properties, and an extension built onto an older house moves differently, and the joint between them takes the strain.
What your quote should include
- Whether the sealant suits the joint
- How long the guarantee is
- Whether VAT is included
- What happens if the job turns out different
Keeping the joints in good condition
No joint lasts for ever, but care makes a real difference. Our tips:
- Keep high-pressure jets off the joints
- Keep movement joints as flexible joints, not mortar
- Act on the first splits you see
- Keep soil, plants and ivy away from the joints
Don’t let soil, plants or ivy build up against the new joints. Damp material against the sealant shortens its life.
Once a joint can’t move, the wall finds another way, often as cracks near the joint. Resealing it early helps prevent that.
Should I try it myself first?
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
If you’ve already had a go yourself, that’s fine. We cut it out and start again, so tell us about it when you ask for a quote.
Different surfaces, different methods
Copings and trims
A failed coping joint lets water into the top of the wall. Resealing them is a small job that protects a lot.
Render joints
The face of render can be soft, so a sealant that stretches easily protects the edges. We prime where the product needs it.
Nearby places to Hammerpot
What else we do in Hammerpot
Walls and rooflines in Hammerpot
Hammerpot is within about 3 miles of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. Both are hard on movement joints and outside wall joints, which can dry out and crack sooner where a building faces the weather. The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
If you look after a building such as St Margaret's CofE Primary School, its movement joints, gutters and trims need looking after like any other building’s. Rented homes near Angmering station change hands often, and failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Hammerpot is about 3 miles north-east of Littlehampton, in West Sussex. If you need external mastic in Hammerpot, please phone 0345 464 0079 or email us for a quick quote. We cover West Sussex from our Crawley base. Hammerpot is one of 371 places in West Sussex we cover. Our Brighton page covers work nearby (16 miles or so).
We work across BN16 for external mastic. Neighbouring places we cover for external mastic include Angmering (1 mile south), Patching (2 miles east), Clapham (2 miles east), Hangleton (2 miles south-east) and West Preston (2 miles south). Further out, we also cover Worthing (4 miles east), Bognor Regis (9 miles west), Chichester (13 miles west), Selsey (15 miles south-west), Littlehampton (3 miles south-west) and Shoreham-by-Sea (9 miles east).
What’s near Hammerpot
In Hammerpot, that means homes and buildings near The Fox pub, The Angmering School and Clapham Wood. The closest station to Hammerpot is Angmering station, roughly 1.7 miles south of the centre. A little further out are Rustington Museum (2.3 miles south) and Lyminster Siege Castle (2.4 miles west). Green spaces nearby include WWT Arundel and Highdown Hill.