Offington construction mastic
Mastic packages for new-build and refurbishment projects in Offington. CHAS accredited and fully insured, with a 12-month guarantee.
- Cracks opening in caulked internal joints
- Window and door perimeters that won’t pass inspection
- Failed sealant in an existing building being refurbished
Construction mastic in Offington
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
How we handle construction mastic in Offington
Since 2005 we have worked alongside main contractors, developers and fit-out firms. We price from drawings and the specification, agree the sequence with the site team and seal as areas are released. For construction mastic on a scheme in Offington, send drawings through our quote form, or phone or email us to talk it through. If you have different trades sealing to different standards and caulk cracking where joints are moving more than expected, we can put it right. Whoever orders the work in Offington, the brief is typically the same: a fixed quote, no surprises on site and a 12-month guarantee behind the result.
Around smaller places like Offington, 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.
Guaranteed is the last step of every job. You get a 12-month guarantee on our workmanship, and we explain exactly what that covers when we quote.
- Where
- Offington (BN14, BN13)
- Wider area
- West Sussex
- Cover
- 12 months on our workmanship
- Quotes
- A fixed quote before we start
- Phone
- 01277 525 020
- Updated
- 3 November 2026
What we are called out for in Offington
Wide, tapered or inconsistent gaps around frames are a common problem. Sealant has a range of joint widths it can cope with and gaps beyond it need packing or adjusting by the frame installer. Better to raise it at the start than seal a joint that’s bound to fail.
These are often picked up first by site or facilities staff:
- Caulk cracking where joints are moving more than expected
- Bath and shower joints scraped during the final clean
- External joints sealed in damp or cold conditions that are now failing
- Oversized or tapered gaps around new frames
Units on estates such as Downlands Business Park, 1.1 miles to the east of Offington, tend to be reclad and refitted as tenants change, and each job leaves cladding and perimeter joints to seal.
Before you book anyone
- How long is the guarantee, and what does it include?
- Proof of insurance
- Health and safety accreditation such as CHAS
- How the existing material will be dealt with
When something else is needed
A proper diagnosis includes knowing what sealant can’t do. We’ll tell you if the real problem is any of the following:
- Fire-stopping design or sign-off (that’s for the designer, fire engineer and building control)
- Specifying the product where the designer hasn’t
- Oversized gaps that need packing or adjustment by others
Not sure which it is? You can speak to us on 01277 525 020 or email a schedule or drawings and we’ll tell you honestly before you book.
What we seal
- Window and door perimeters
- Floor and skirting junctions
- Brick and block movement joints
- Internal decorators’ caulk
- Cladding and panel joints
- Sanitary and kitchen joints
What sets the cost
Your fixed quote is built from the real scope. It allows for:
- How much existing material needs removing
- Travel to remote or island sites
- Which sealant the job calls for
- Whether the work must be split into stages
We don’t publish prices, since every building and every scope is different. For a fixed figure, call for a quote and we will price your job on its own details.
Details that help us quote
For an accurate fixed quote, we need a clear picture of the site. Send us:
- Clear photos of the problem areas
- The product your specification calls for
- The type of building and who uses it
- Rough lengths or quantities, or drawings if you have them
Photos, drawings or a schedule of the joints are often enough for a fixed quote. If the job needs a look first, we will arrange a site visit.
Also near Offington
What else we do in Offington
Offington: questions and answers
Could you schedule work at a campus like Worthing College for the vacation?
Yes. Tell us the term dates, vacation periods and access windows, and we’ll plan the work around them. Let us know which documents your site asks for, and we’ll confirm them alongside the quote.
Our building in Offington is near the coast: does that change the sealant?
It can, yes: buildings near the sea take more wind-driven rain, and salt in the air nearer the shore. We choose the product for the exposure, prime where the manufacturer requires it and size the joint for its movement.
What if there’s asbestos in the old mastic?
Asbestos is possible in some older mastics, particularly in buildings from before 2000. Before we disturb old sealant in an older building, we ask to see the asbestos register or survey, and if asbestos is suspected, work stops until it’s tested. We don’t remove asbestos-containing materials.
Is it fine to apply new sealant on top of old?
No, never. Sealing over old material is one of the classic causes of early joint failure, so it all comes out first.
What about RAMS and site documents?
Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we’ll confirm with the quote.
Can you quote from photos?
Many jobs can be quoted from photos, drawings or a joint schedule. Where they aren’t, we arrange a site visit.
Can you clear a mastic snag list before handover?
Yes. Damaged, missed or untidy joints are stripped and done again properly to suit the programme.
From enquiry to sign-off
In a busy building, the work is phased so only one area is out of use at a time. Each area is protected, prepared and sealed before the next one starts. If others near Offington need work, visits can be combined. You’ll have a fixed quote before work starts.
- 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
- Share the asbestos register for older buildings
- Clear stock, furniture or equipment away from the joints
- Arrange parking or a loading space
Getting a fixed quote
Every quote starts with the facts: the joints involved, quantities, access and the product called for. Share whatever details you have and we’ll fill any gaps with a visit.
Read more
Should maintenance staff do it?
Site maintenance staff can often handle a short internal joint. Where it goes wrong is preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.
For a quick touch-up, site staff may be fine, but larger jobs are different: a specialist brings efficiency, a consistent finish and a 12-month guarantee.
Sites and facades in and around Offington
The sea is no more than about 2 miles from Offington. On a coastal site, facade and perimeter joints face driven rain and, closer to the beach, salt, which puts weight on correct joint sizing, priming and a sealant suited to the exposure. Plenty of hotels sit less than 2 miles from Offington. Hotel schemes tend to have fixed reopening dates, so the mastic is programmed tightly with the other trades.
Extensions at sites like Worthing Hospital, 1.6 miles to the south-east of Offington, usually sit beside working departments, and the mastic follows strict access rules. School extensions, at buildings such as Thomas A Becket Junior School, normally run to the summer holidays, mastic included.
Offington is about 1 mile north-east of Worthing, in West Sussex. Businesses, contractors and managing agents in Offington can call on us for mastic packages. Our West Sussex coverage takes in 373 places. For work in that direction, see our Brighton page.
Postcode districts covered here: BN14 and BN13 for mastic packages. Streets here include Rogate Road, Warren Road and Hall Avenue, and sites on any of them can send details for a fixed quote. You will find Offington on or near the A24 and A27. If your building is just outside Offington, we cover Salvington (1 mile west), Broadwater (1 mile south-east), Worthing (1 mile south-west), Findon Valley (1 mile north) and Sompting (2 miles east). A short drive away, we cover Bognor Regis (13 miles west), Burgess Hill (14 miles north-east), Littlehampton (6 miles west), Shoreham-by-Sea (5 miles east), Lancing (3 miles east) and Rustington (5 miles west).
Near you in Offington
We work on buildings around Thomas A Becket First School, The Thomas a Becket pub and Durrington Minature Railway, among other places. The closest station to Offington is West Worthing station, about 1.1 miles south. Nearby you will also find Old Castle (0.6 miles south) and Museum of Sussex Folklore (0.6 miles south). Green spaces nearby include Widewater Lagoon and Steep Down.
Maintenance after handover
A few simple habits keep the new joints working:
- Record the products used in the O&M file
- Brief the final clean team to avoid blades near sealant
- Allow flexibility for external sealing in damp or cold weather
- Check frame gaps are within the sealant’s range before sealing
Our 12-month guarantee covers the workmanship from sign-off. Damage by others isn’t a workmanship fault.
A missed perimeter seal on one window can wet the reveal and the plaster inside. That usually means redoing finishes in a completed area, and a delay to handover. Checking perimeters before internal finishes go on avoids it.