Barnham construction mastic
Mastic packages for new-build and refurbishment projects in Barnham and across West Sussex. CHAS accredited and fully insured, with a 12-month guarantee.
- A mastic package split between trades with no clear owner
- External joints sealed in damp or cold conditions that are now failing
- Frame gaps too wide for sealant alone
Construction mastic in Barnham
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
How we handle construction mastic in Barnham
Refurbishment work needs a slightly different approach from new build. Existing joints have to be stripped back to sound faces, because fresh sealant can’t key into cured silicone. New and existing joints then get the same preparation. If you’re dealing with early adhesion failures on new external joints and sealant knocked or painted over by other trades, we can help, whatever the surface. Searching for sealant specialists in Barnham? We have been sealing commercial buildings since 2005, with CSCS-carded applicators.
For a site near Barnham, the mastic visit is planned so the right sealants, primers and backing rod are on hand, timed to the stage the job has reached. Drawings, photographs and the programme let us give a fixed quote.
The 12-month guarantee is for workmanship rather than wear and tear. Sealant wears with time, and movement, weather, cleaning and use decide how fast, so we’re clear about what is covered before work starts.
- Where
- Barnham (PO22)
- Wider area
- West Sussex
- Guarantee
- A 12-month guarantee
- Quotes
- A fixed quote before we start
- Telephone
- 01277 525 020
- Last updated
- 3 November 2026
Diagnose, treat, sign off
Tell us your site hours and access windows and we will plan around them. On the day, the work area is kept contained and tidy, and we check in with your contact before moving on to each new area. For work around Barnham, we aim to finish in one visit, so photographs and measurements up front really help. That way the right products come on the day.
- First we take quantities off the drawings and read through the specification.
- You receive a fixed quote listing scope, products and phasing.
- Any site paperwork you need (RAMS, insurance certificate, CSCS details) is confirmed with the quote.
- Work follows the programme, area by area, as rooms and elevations become ready.
- Every joint is prepared, set to depth and sealed with the specified product.
- We close out snagging and hand over with a 12-month guarantee.
Getting the site ready
- Have the specification and drawings to hand
- Explain the parking and delivery arrangements
- Clear stock, furniture or equipment away from the joints
Quotes
We quote a fixed sum against the scope you give us, so the cost is agreed before work starts. To start the process, call 01277 525 020 or email a schedule or drawings.
Related advice
How the job changes by surface
Bathrooms, en suites and washrooms
Across a block of flats or a hotel, sanitary sealing is repeated in every room. A single team keeps the standard consistent.
Snagging before handover
Snags typically come from damage by following trades, missed joints or poor earlier work. Snagging can be included or priced separately, depending on what suits the programme.
When it isn’t the sealant
Not every problem is a sealant problem, and we’d rather tell you before you spend money. These need a different solution:
- Joint design decisions that belong to the architect or engineer
- Defective windows, doors or glazing units (the supplier or installer’s job)
- Frame gaps too wide for sealant, which the installer needs to correct
If in doubt, give us a call on 01277 525 020 or send photos by email and we will say what we think.
What we seal
- Window and door perimeters
- Sanitary and kitchen joints
- Floor and skirting junctions
- Cladding and panel joints
- Internal decorators’ caulk
- Brick and block movement joints
Common questions from Barnham clients
Is a hospital such as Bognor Regis War Memorial Hospital somewhere you can work?
Yes, provided the work is planned with the site’s estates team. The estates team’s permit system and infection-control rules come first, and the work is planned around them.
Our building in Barnham is near the coast: does that change the sealant?
It can. Wind-driven rain and, closer to the shore, salt air are harder on external joints. We check the specified product suits the exposure and pay close attention to preparation.
Is it fine to apply new sealant on top of old?
No. Sealing over old material is one of the classic causes of early joint failure, so it all comes out first.
Do you guarantee new-build sealant work?
Each package is backed by a 12-month guarantee. We’re also fully insured for public liability.
Can the building stay open while you work?
Normally, yes. Phased work can be planned so areas stay in use, with each area protected and signed.
Can you come in just for snagging?
Yes. We clear snags by redoing joints rather than patching them to suit the programme.
What will the job cost?
It depends on the job: quantities, access, the product and any phasing. Call for a quote and we will price it properly.
What affects the price in Barnham
To price the job, we consider:
- Which sealant the job calls for
- Access and working height
- Phasing around occupants
- Removal of failed or old sealant
No two sites price the same: joint size, product, access and site hours all play a part. A fixed quote follows once we understand the job.
Sending details for a quote
Good information means a firmer quote. Helpful details to send:
- Whether an asbestos survey exists
- Any specification or named product
- Where the site is, with the postcode
- Whether the building will be occupied during the work
Need a figure for a tender or a budget? Send the scope and any drawings, and we will return a fixed quote you can plan around. If you have questions first, speak to us on 01277 525 020 or send photos by email.
Should maintenance staff do it?
For most general trades, sealant is a sideline. A specialist brings correct preparation, depth control with backing rod and a product suited to that particular joint.
Redoing a failed joint normally costs more than getting it right at the outset, because the whole bead must be removed and the faces cleaned back again. For that reason, many FMs and contractors use a sealant specialist from the outset.
Towns and villages near Barnham
Also in Barnham
Looking after the joints
Keep the joints in good shape with a few simple steps:
- Flag uneven or tapered frame gaps early
- Keep finished joints away from paint, plaster and scrapers
- Don’t force external sealing on a damp or frosty day
- Release areas for mastic once other trades have finished in them
Our 12-month guarantee covers the workmanship from sign-off. Damage by others isn’t a workmanship fault, so protecting sealed areas matters.
Leaving the mastic snag list to the end squeezes everyone. Clearing snags area by area spreads the work out and keeps handover on track.
Mastic packages on Barnham sites
Barnham sits close to the coast, within about 3 miles. Schemes this close to the sea see their facade joints tested by wind and rain from the day they’re sealed, and the sealant, primer and backing need choosing with that in mind. Rainfall across the South East, Barnham included, is lower than in many parts of the UK. Still, external mastic needs dry faces within the maker’s temperature limits, which isn’t every day, so external mastic is timed for workable conditions and agreed with the site manager.
School extensions, at buildings such as Barnham Primary School, normally run to the summer holidays, mastic included. For a contractor working at a hospital such as Bognor Regis War Memorial Hospital, which lies south-west of Barnham, perimeter and facade sealing is planned around patients and deliveries. Building work at universities like University of Chichester (Bognor Campus) (3.1 miles south-west of Barnham) is often timed for the summer, mastic included.
Barnham is about 4 miles north-east of Bognor Regis, in West Sussex. If you are looking for construction mastic in Barnham, we can help. Across West Sussex, 373 places are covered, Barnham among them. Sites around Portsmouth have their own page, about 19 miles away.
Work on mastic packages is covered throughout PO22, whatever the building. Streets here include Garden Crescent, Dollery Road and Goodacres, and sites on any of them can send details for a fixed quote. Just outside Barnham, we also work in West Barnham (1 mile north-west), Walberton (1 mile north-east), Yapton (1 mile south-east), Eastergate (1 mile north-west) and Lidsey (1 mile south-west). Further afield, our area takes in Worthing (10 miles east), Bognor Regis (4 miles south-west), Chichester (6 miles west), Selsey (9 miles south-west), Littlehampton (5 miles east) and Lancing (14 miles east).
What’s near Barnham
Locally, jobs take us to sites close to The Murrell Arms and St Philip Howard Catholic High School. There’s a railway station in Barnham itself: Barnham station. A little further out are Bognor Regis War Memorial Hospital (3.2 miles south-west) and Tote Copse Castle (2.5 miles west). Not far away are WWT Arundel.