Rock construction mastic
Our CSCS-carded applicators take on mastic packages for new-build and refurbishment projects in Rock and the surrounding area. Send photographs or drawings for a fixed quote.
- New external sealant already peeling away
- Cracks opening in caulked internal joints
- Frame gaps too wide for sealant alone
Construction mastic for Rock sites
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
When to call us in Rock
Three-sided adhesion is a frequent fault on new work. Bonded to the base of the joint and both sides, sealant can’t stretch evenly, so depth is controlled with backing rod or bond-breaker tape.
If one of these sounds familiar, it’s time for a closer look:
- Bath and shower joints scraped during the final clean
- Frame gaps too wide for sealant alone
- Failed sealant in an existing building being refurbished
- Caulk cracking where joints are moving more than expected
Units on estates such as Rock Business Park, under half a mile east of Rock, tend to be reclad and refitted as tenants change, and each job leaves cladding and perimeter joints to seal.
Questions to ask before you book
- Do they follow the manufacturer’s priming guidance?
- Will RAMS and insurance details be available?
- How the existing material will be dealt with
- What level of public liability insurance do they hold?
Construction mastic in Rock, done properly
Mastic tends to be one of the final packages before handover. We work as a mastic subcontractor to main contractors and developers. The enquiries we see most involve frame gaps too wide for sealant alone and old sealant on a refurbishment that needs stripping before new work, across window and door perimeters, internal decorators’ caulk and sanitary and kitchen joints. Looking for mastic applicators who cover Rock? We have been sealing commercial buildings since 2005, with CSCS-carded applicators.
Around smaller places like Rock, building work usually means conversions of farm buildings, a few new houses or an extension to a hall or school. Each still needs a proper mastic package: window perimeters, facade joints and internal sealant to the specification.
Every job ends the same way: guaranteed. Our workmanship is backed for 12 months, and the quote explains what it covers.
- Location
- Rock (RH20)
- Region
- West Sussex
- Cover
- 12 months on our workmanship
- Price
- A fixed quote before we start
- Phone
- 01277 525 020
- Last updated
- 3 November 2026
Work for main contractors and building owners
We take on planned maintenance as well as one-off repairs: working through a building or an estate in stages that fit your budget. Sites in Rock can sit alongside others in a wider programme across West Sussex.
For main contractors, we work as the sealant subcontractor. Programme, specification and site rules come first, and our applicators hold CSCS cards.
More services for Rock
What affects the price in Rock
Before we quote, we look at:
- Phasing around occupants
- How much there is to seal
- Travel to remote or island sites
- Backing rod, priming and other preparation
The product called for affects the cost, as does the preparation each joint needs. Access, phasing and site rules also count.
What to include in your enquiry
Good information means a firmer quote. When you get in touch, include:
- Clear photographs of the problem areas
- Anything awkward about access or site hours
- Whether an asbestos survey exists
- The postcode of the building
The quickest route to a quote is a few photos and the site postcode. Upload them with the quote form, or call the office on 01277 525 020 or use the quote form to discuss it first.
Why it’s worth doing now in Rock
Patching snags as they appear can feel quicker than a proper close-out. A planned sweep of each plot or floor catches the lot in one go, and avoids repeated visits. Snagging can be priced as a separate stage. Converted and older buildings near places like Rock tend to move, and aged sealant cracks. The right product, sized to the joint, copes much better.
Access can matter as much as the joints themselves: joints within easy reach take less time than ones that need access equipment. Tell us how the joints are reached and call for a quote.
Why appoint us
- Coloured sealants to suit the setting, where available
- 12 months’ guarantee on every job
- Products installed to the manufacturer’s instructions
- Colours chosen to suit frames, cladding or finishes where possible
See what affects the cost and our accreditations.
Mastic packages on Rock sites
At about 43 miles from central London, Rock is within reach of the capital. Towns within reach of London tend to keep building, from flats to offices and schools, so mastic packages have to keep pace with busy programmes. The South East is one of the drier parts of the UK. Still, external mastic needs dry faces within the maker’s temperature limits, which isn’t every day, which is why external dates are agreed with the site manager.
With historic properties like Parham House (to the west of Rock) in the area, refurbishment work often meets old masonry that needs compatible sealants. For a contractor at a hotel such as Mill House Hotel, 1.1 miles to the north-east of Rock, the mastic often has to be finished before a reopening date.
Rock is about 6 miles north of Worthing, in West Sussex. We cover commercial sites throughout Rock. We work across 373 places in West Sussex, from busy centres to rural villages. There’s a separate page for Brighton, roughly 13 miles from Rock.
We cover the RH20 postcode districts for mastic packages. Streets here include Old London Road, London Road and Lamorna Close. Just outside Rock, we also work in Washington (1 mile south), Heath Common (1 mile north-west), Sullington (1 mile west), Warminghurst (2 miles north) and Storrington (2 miles west). A short drive away, we cover Horsham (11 miles north), Worthing (6 miles south), Bognor Regis (15 miles south-west), Haywards Heath (15 miles north-east), Burgess Hill (12 miles east) and Littlehampton (9 miles south-west).
What’s near Rock
Locally, jobs take us to sites close to Rydon Community College and The Frankland Arms Public House, among other places. Nearby you’ll also find The Storrington And District Museum (1.9 miles west). Not far away are Chanctonbury Hill.
From enquiry to sign-off
Inspect, seal, sign off: every visit follows that pattern. We inspect the joints and confirm what’s in scope, then we prepare and seal each joint with the specified product, and the job ends with a walk round and sign-off. For a building around Rock, tell us how to find it and who will meet us. Add it to your enquiry and we’ll build it into the plan.
- Drawings, specification and programme come to us.
- Quantities are measured and a fixed price returned.
- We agree with the site team which areas come first.
- Plots or floors are sealed as they’re handed over.
- Every joint is cleaned, set to depth and sealed with the specified product.
- Snags are cleared and the package signed off with our 12-month guarantee.
Preparing the site
- Tell staff and tenants when we’ll be in
- Share the asbestos register for older buildings
- Let us know about inductions and permits
Get a fixed quote
Every quote starts with the facts: what’s there, how much of it, how we reach it and what’s specified. Share whatever details you have and we’ll fill any gaps with a visit.
Advice
Your questions answered
Do you cover business parks and estates near Rock, such as Rock Business Park?
Yes. Estates, retail parks and business parks around Rock, Rock Business Park among them, are all within reach. Photos and a short description are enough for a first look.
Is Rock off your patch?
No. Places such as Rock are covered as much as the big towns. We cover Greater London and the counties of the South East. Send photos and a list of what needs doing, and we will plan the job to need as few trips as possible.
Is it fine to apply new sealant on top of old?
No. Failed sealant is removed and the faces cleaned back to sound, dry material first, since fresh sealant will not bond reliably to aged material.
What guarantee comes with a mastic package?
Our workmanship carries a 12-month guarantee from sign-off. The guarantee covers our work, not later damage by other trades.
How long before the joints can be used?
The product and site conditions decide that. Some take light use quickly, others need longer to cure, and we confirm it before leaving site.
How many days will you need on site?
We plan the time on site around your programme and access. We will give you an estimate of time on site when we quote.
Are you CHAS accredited?
We are CHAS accredited and a Constructionline member, with CSCS-carded applicators. Public liability insurance of five million pounds is in place too.
Site staff or a sealant specialist?
Site maintenance staff can often handle a short internal joint. The usual problems come from preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.
Paperwork matters too. Many sites expect CSCS cards, RAMS and proof of insurance, and we will confirm the paperwork you need with the quote.