Construction and new-build mastic in Charlton, West Sussex
Commercial sealant work in Charlton for contractors, FMs and building owners: mastic packages for new-build and refurbishment projects, quoted at a fixed price.
- Frame perimeters left unsealed or poorly sealed
- Bath and shower joints scraped during the final clean
- Caulk cracking where joints are moving more than expected
Need construction mastic in Charlton?
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Doing it in-house
What you see is the finished bead, but most of the work is hidden. Backing rod, primer where specified and a joint designed to move with the building are easy to get wrong without experience.
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, which is what makes a joint last.
Construction mastic for commercial buildings in Charlton
Site managers want applicators who turn up with the right cards and paperwork. We’re a Constructionline member and CHAS accredited, and every applicator holds a CSCS card. RAMS, an insurance certificate and CSCS details can be confirmed with the quote if you tell us what you need. Most enquiries involve cracks opening in caulked internal joints and inconsistent sealant finishes from plot to plot, on floor and skirting junctions, window and door perimeters and cladding and panel joints. Most enquiries from Charlton start with one failed joint and grow into a wider look at the building: we check the joints around it and give you an honest view of what needs doing now and what can wait.
For a site near Charlton, the mastic visit is planned so the right sealants, primers and backing rod are on hand. Send drawings or photographs and the programme and we will quote to suit.
Every job we finish is backed by a 12-month workmanship guarantee, wherever the site is. If our installation lets you down in that time, we return and fix it.
- Place
- Charlton (PO18)
- Wider area
- West Sussex
- Guarantee
- 12 months on every job
- Quotes
- Quoted before any work starts
- Phone
- 01277 525 020
- Page updated
- 3 November 2026
Questions about Charlton
Is Charlton too far out for you?
Not at all: smaller places are covered as well as towns. We work across Greater London and the South East. Good photographs up front let us bring everything on the first visit.
Can you take on a job at a hospital such as Chichester Centre?
Yes, hospitals are one of the sectors we cover. Work is phased so departments keep running, under the site’s own rules.
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.
Do you have public liability insurance?
Yes. Mastic Doctor is fully insured, public liability included.
Can fire-rated sealing at service penetrations be included?
Where it’s specified, yes to the tested detail. We will flag if the detail needs a different product.
How do I request a quote?
The quote form is the simplest route, though you can also give us a call on 01277 525 020 or use the quote form. Photos, drawings or a joint schedule help us quote quickly.
How long does a job like this take?
It depends on the scope, but the work usually takes as long as the agreed sequence needs, which comes down to joint lengths, access and handover dates. Larger or phased jobs take longer, and we’ll give you a timescale with the quote.
Building and refurbishing in Charlton
Charlton is about 49 miles from central London. Construction around the commuter belt mixes station-side flats with refurbished offices and units, so mastic packages have to keep pace with busy programmes. Rainfall across the South East, Charlton 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 the external programme keeps a little slack.
When a school such as Singleton CofE Primary School is extended or refurbished, the mastic package is often squeezed into the holidays. For a contractor at a hotel such as Woodstock House Hotel (under half a mile north of Charlton), the mastic often has to be finished before a reopening date. Projects at colleges like West Dean College of Arts and Conservation (1.6 miles west of Charlton) tend to run to term dates, so the mastic is planned tightly.
Charlton is about 5 miles north of Chichester, in West Sussex. Any commercial site in Charlton is covered. Charlton is one of 373 places in West Sussex on our list. Our Portsmouth page has more on work in that area.
Commercial sites across PO18 are covered. Streets here include Charlton Road and Knight's Hill, and sites on any of them can send details for a fixed quote. We also cover Singleton (1 mile west), East Dean (1 mile east), West Dean (2 miles west), Cocking (3 miles north) and Heyshott (3 miles north) for mastic packages. Further afield, our area takes in Bognor Regis (9 miles south), Chichester (5 miles south), Selsey (12 miles south), Littlehampton (11 miles south-east), Rustington (12 miles south-east) and Storrington (13 miles east).
Landmarks near Charlton
A little further out are Chichester Centre (4.6 miles south) and Weald and Downland Gridshell (0.8 miles west). The countryside around Charlton includes Levin Down and Kingley Vale National Nature Reserve.
Also near Charlton
Other services in Charlton
From enquiry to sign-off
Our CSCS-carded applicators arrive with the sealants, primers and backing rod the job calls for. Joint faces are cleaned back to sound, dry surfaces, the manufacturer’s primer is applied where it’s called for, and the sealant is tooled off neatly. Jobs in and around smaller places like Charlton are typically planned as a single visit, so photos and measurements up front really help. Then the right materials arrive with us.
- We start with the drawings, specification and programme.
- Quantities are measured and a fixed price returned.
- The sequence is agreed with the site manager.
- Each area is sealed when it’s released.
- Joints are prepared, backed and sealed to the specification.
- Snags are cleared and the package signed off with our 12-month guarantee.
What we need from you
- Clear stock, furniture or equipment away from the joints
- Have the specification and drawings to hand
- Explain the parking and delivery arrangements
Quotes
Every job follows the same four steps: send details, get a quote, we seal, guaranteed. To take the first step, give us a call on 01277 525 020 or email the details over.
Advice
Commercial clients in Charlton
When you manage a building on behalf of an owner, clear figures and clear communication matter. You get a fixed quote, an agreed scope and a walk round at the end, plus a 12-month guarantee.
CHAS accredited and a Constructionline member, we make supplier vetting simple. We are fully insured, and our insurance certificate can go with the quote.
Looking after the joints
Every sealant joint needs some looking after, and their life depends on movement, exposure, cleaning and use. Our advice:
- Don’t force external sealing on a damp or frosty day
- Note which sealant went where at handover
- Ask installers to correct oversized gaps first
- Use the product the specification names
At handover, keep the product details with the O&M information. That helps the building owner maintain the joints later. We can confirm the handover information you need when we quote.
Sealing outside when the joint is damp or too cold leads to poor adhesion. Waiting for a dry joint and the right temperature is better than redoing work, so we plan external work with that in mind.
When something else is needed
Our job is the joint, not everything around it. On its own, sealant can’t deal with:
- Rework caused by others damaging completed areas
- Joint design decisions that belong to the architect or engineer
- Frames fitted out of tolerance
Not sure which it is? You can ring 01277 525 020 or use the quote form and we’ll tell you honestly.
Where we work in Charlton
- Internal decorators’ caulk
- Floor and skirting junctions
- Sanitary and kitchen joints
- Cladding and panel joints
- Brick and block movement joints
- Window and door perimeters
Different surfaces, different methods
Window and door perimeters
A frame gap that’s too wide can’t just be filled with sealant. Gaps outside the product’s range are raised with the site team.
Fire-rated sealant where specified
Where the specification calls for fire-rated or intumescent sealant around service penetrations or linear gaps, we install it to the manufacturer’s tested detail. The design and sign-off of fire stopping sit with the designer, principal designer or fire engineer.