
Hunston commercial sealant contractors
Need commercial sealant contractors in Hunston? It’s simple: send details, get a quote, we seal, guaranteed.
- Window and door perimeter joints that have cracked open
- Earlier reseals applied straight onto the failed bead
- Hardened, chalky sealant on south-facing or exposed elevations
Commercial sealant contractors in Hunston
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
For managing agents and facilities managers
Whether you are a managing agent, a property factor or an owner’s representative: send the details, accept a fixed quote, and we carry out and guarantee the work. Keys, access and contacts can be agreed in advance.
Main contractors use us as their sealant subcontractor. We work to your programme, your specification and your site rules, with CSCS-carded applicators on site.
Sealant applicators in Hunston
Most of the buildings we seal stay open while we are there. Work is scheduled around the site hours and access windows you give us. That applies whether the building is an office, a shop, a hotel, a college or a care home. We work on kitchen worktops and splashbacks, external facade joints and movement joints in walls and floors, and the failures we’re asked to look at most are frame sealant that has cracked, shrunk or pulled away and leaks that seem to come through a sealant line. Searching for sealant specialists in Hunston? Mastic Doctor has worked for contractors, FMs and building owners since 2005, with CSCS-carded applicators.
Multi-site clients with buildings in and around Hunston can put several sites on one programme, so standards and paperwork match across every site.
Rural business units near smaller places such as Hunston are frequently converted agricultural buildings. Old masonry beside new aluminium, timber and plasterboard gives plenty of joints between materials that move differently, and a sealant colour that suits the building’s character is often part of the brief.
Whoever the client is, the cover is the same: twelve months on the work we carried out. It doesn’t extend to damage, faults in the building or work by others, and we are upfront about that.

- Location
- Hunston (PO20)
- Region
- West Sussex
- Guarantee
- 12 months on every job
- Quote
- Quoted before any work starts
- Phone
- 01277 525 020
- Last updated
- 3 November 2026
Common questions from Hunston clients
Does your area include sites such as City Business Park, near Hunston?
Yes. We cover Hunston and the area around it, including industrial estates, business parks and retail parks such as City Business Park. Send details of the unit and the work through our quote form for a quick quote.
Is Hunston too far out for you?
No. Places such as Hunston are covered as much as the big towns. Our area covers London and the South East counties. Good photographs up front let us bring everything on the first visit.
Do you seal on top of existing sealant?
No, never. Overlaying old sealant is a frequent cause of early failure, so everything comes out first.
When is resealing likely to be due?
It depends on movement, UV and weather, cleaning, traffic and the product. Sealant joints are maintenance items, so inspect them regularly.
Do you check for asbestos before removing sealant?
In buildings from before 2000 in particular, some old mastics and sealants may contain asbestos. We ask to see the asbestos register or survey before disturbing old sealant, and anything suspect is left until it has been tested.
Will your applicators have CSCS cards?
Yes. We use CSCS-carded applicators, which many sites require.
Who decides which product is used?
The specification comes first, if there is one. If there isn’t one, it comes down to the joint: how much it moves, what it bonds to and whether it’s wet, trafficked or fire-rated.
Why it’s worth doing now in Hunston
Patching the worst lengths can be the right call on a tight budget. Where the remaining sealant is just as old, it tends to fail soon after, so access and set-up end up being paid for twice. Where it helps, we quote a patch and a full reseal side by side. One visit to deal with every failing joint makes more sense than several trips to a place like Hunston, rather than one at a time. Send photographs of each area and we’ll quote for the lot.
We don’t publish prices, because the scope varies so much from one building to the next. For a fixed figure, call for a quote and we’ll price your job on its own details.
What you get with us
- Coloured sealants to suit the setting, where available
- CSCS-carded applicators
- Fully insured, including public liability cover
- 12 months’ guarantee on every job
Take a look at how commercial sealant jobs are priced and our accreditations and insurance.
Our process
Before we leave any area, we remove the tape, clean down and inspect every joint, ready for your sign-off. Where the sealant needs time to cure before use, we tell you and sign the area. Rural sites near Hunston may need directions, gate codes or a contact on site. Add it to your enquiry and we will build it into the plan.
- First, details reach us through the quote form or a site visit.
- The cause is diagnosed and the scope priced as a fixed quote.
- Where parts of the building must stay open, the work is phased.
- Every failed bead is removed rather than covered.
- A suitable product for each joint goes in at the right depth and is tooled.
- A final walk-round, then the 12-month guarantee applies.
Preparing the site
- Let building users know which areas are affected
- Clear stock, furniture or equipment away from the joints
- Tell us which areas need to stay in use
Get a fixed quote
Photos, drawings or a schedule of the joints are often enough for a fixed quote. If the job needs a look first, we’ll arrange a site visit.
Advice
Sealant on show in Hunston’s commercial buildings
Hunston is within about 3 miles of the coast. For shops, hotels and offices, that means frontage and frame joints that weather faster than they would inland. We choose a product rated for the exposure, then confirm the colours available for it. At about 56 miles from central London, Hunston is within reach of the capital. Business parks and retail centres are common around the capital’s motorway corridors. Firms with branches across the South East can use one contractor for every site.
In hotels such as Crouchers Hotel, 1.1 miles to the west of Hunston, refurbishments typically mean bathroom, bar and reception joints where a matched sealant colour has to sit with the finishes. On a business park such as City Business Park, 1.5 miles north of Hunston, sealant work tends to follow fit-outs: receptions, tea points, washrooms and frame perimeters.
Hunston is about 2 miles south of Chichester, in West Sussex. Businesses, contractors and managing agents in Hunston can call on us for sealant joints. Hunston is one of 373 places in West Sussex on our list. Portsmouth is covered too, around 13 miles from Hunston.
If you need commercial sealant contractors in PO20, the process matches everywhere else we work: details, then a fixed price, then sealing and a 12-month guarantee. Streets here include Heath Close, Westlands Road and St Leodegars Way, and sites on any of them can send details for a fixed quote. Nearby places we also cover include Donnington (1 mile west), North Mundham (1 mile east), Runcton (1 mile east), Portfield (2 miles north) and Chichester (2 miles north) for sealant joints. A short drive away, we cover Bognor Regis (4 miles east), Selsey (5 miles south), Littlehampton (11 miles east), Rustington (12 miles east), Angmering (13 miles east) and Yapton (7 miles east).
Landmarks near Hunston
Recent enquiries here include premises near Chichester High School For Girls and The Spotted Cow Public House, among other places. Hunston’s nearest station is Chichester station, roughly 1.5 miles north. Well-known places in the area include St Richard's Hospital (2.3 miles north) and Chichester Castle (2 miles north).
After the work
Your facilities or cleaning team can help the joints last. Pass these on to them:
- Ask fit-out and M&E contractors to report any sealant they disturb
- Have extract fans checked so wet areas dry out
- On pre-2000 buildings, share the asbestos information before work starts
- Keep a record of which joints were resealed and when
Good ventilation keeps wet-area sealant in better condition. Extraction that isn’t working keeps the joints wet. It’s worth having fans checked while the sealant is fresh.
Sealant rarely fails all at once across a building. A few splits this year typically mean more next year. We’ll tell you which sealant joints need doing first and which can wait.
When to call us in Hunston
A split down the middle of the bead tells a different story. Normally the movement was too much for the sealant chosen. The same product in the same joint tends to fail the same way, so width, depth and product are checked before we quote.
Common reasons buildings call us in:
- Earlier reseals applied straight onto the failed bead
- Gaps behind commercial kitchen worktops and sinks
- Wall and floor joints that have lost their seal
- Frame sealant that has cracked, shrunk or pulled away
A business with units at City Business Park and Quarry Lane Industrial Estate needn’t use two contractors for its sealant.
Comparing quotes
- What level of public liability insurance do they hold?
- How the existing material will be dealt with
- Which product they’ll use, and why it suits the joint
- How long is the guarantee, and what does it include?
What the job involves on each surface
Movement joints in walls and floors
Brickwork, blockwork and floor slabs all have movement joints that need a flexible seal. When the seal fails, debris gets in and the joint stops working. The new sealant is chosen for the movement and, on floors, the traffic.
Window and door perimeters
Where frames meet the surrounding wall, sealant is the weather line. Failed perimeters are cut out and cleaned, backing goes into deeper gaps, and the joint is resealed with a low-modulus neutral-cure silicone or another suitable product.