The Mastic Doctor team standing beside their branded vans outside an office building
West Sussex · England

Construction and new-build mastic in Upperton, West Sussex

Work needed on a mastic package in Upperton? We look at it, seal it with the right product and hand it over with a 12-month guarantee.

  • Caulk cracking where joints are moving more than expected
  • A long mastic snag list close to completion
  • Frame gaps too wide for sealant alone
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
12-month guarantee on our workmanship.
South East, London & Scotland
CHAS & Constructionline
£5m PL insurance

Construction mastic for businesses in Upperton

Photos, a specification or a quick description of the joints is enough to start a fixed quote.

Construction mastic in Upperton, done properly

A typical mastic package covers more than window perimeters: external door and window perimeters, internal decorators’ caulk where specified, sanitary joints in bathrooms and washrooms, kitchen worktops and splashbacks, and snagging before handover. One contractor for all of it keeps the responsibility in one place, and one applicator team gives a consistent finish. If you have a mastic package split between trades with no clear owner and perimeter gaps outside the sealant’s range, we can put it right. For commercial sealant work in Upperton, you deal with one contact from quote to sign-off, for single jobs and planned programmes alike.

Sites around smaller places like Upperton can be a fair drive from suppliers, so we come with everything the package needs, timed to the stage the job has reached. Send drawings or photographs and the programme and we will quote to suit.

Every job is signed off with a 12-month guarantee. It’s a plain promise: if the work we did fails within twelve months, we return to fix it.

Where
Upperton (GU28)
Wider area
West Sussex
Guarantee
A 12-month guarantee
Quote
Fixed quote, scope in writing
Phone
01277 525 020
Last updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

Common questions from Upperton clients

Is Upperton too small for you to travel to?

No. Places such as Upperton are covered as much as the big towns. London and every South East county are within our area. Where we can, we group nearby jobs to make the most of each trip.

Does your area include sites such as Hampers Common Industrial Estate, near Upperton?

Yes. Our area takes in Upperton and its surroundings, with estates and business parks such as Hampers Common Industrial Estate included. A few photos and the unit address let us price the work.

Is it fine to apply new sealant on top of old?

No. We cut the old material out and clean the joint back before sealing, since fresh sealant will not bond reliably to aged material.

Is the mastic package guaranteed?

Our workmanship carries a 12-month guarantee from sign-off. Damage by others after we’ve finished isn’t covered.

Can you clear a mastic snag list before handover?

Yes. Share the list and photos, and a fixed quote follows, then clear it to your programme.

What will the job cost?

We don’t publish prices, as every site differs. Send photographs or drawings and we will price it at a fixed figure.

Will you stick to the specified products?

The specification decides the product and flag anything that doesn’t look right for the joint. Product standards such as BS EN 15651 are often named in specifications.

Our process

We follow your site rules from the start: sign-in, induction and whatever permit system the building uses. With the paperwork done, the joints are worked through in the order agreed with your site contact. Smaller jobs around Upperton can be grouped with others nearby, which keeps travel down. You will have a fixed quote before work starts.

  1. We start with the drawings, specification and programme.
  2. Quantities are measured and a fixed price returned.
  3. The sequence is agreed with the site manager.
  4. Plots or floors are sealed as they’re handed over.
  5. Joints are prepared, backed and sealed to the specification.
  6. After snagging, the work is handed over under our 12-month guarantee.

What we need from you

  • Clear stock, furniture or equipment away from the joints
  • For older buildings, check the asbestos register before work
  • Send your site hours and access windows

Ask for a quote

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, give us a call on 01277 525 020 or email the details over.

Ask for a quote

Advice

What affects the price in Upperton

Sealant work doesn’t have a standard rate, because every site is different. What we look at:

  • Specialist products, such as fire-rated or hygienic sealants
  • Backing rod, priming and other preparation
  • Any access equipment needed
  • Working within restricted access windows

A quote for mastic packages depends on quantities, condition and access, plus any specification you’re working to. Ask us for a fixed quote.

What to include in your enquiry

However big the job, these details speed things up:

  • Any specification or named product
  • Rough lengths or quantities, or drawings if you have them
  • Asbestos survey details if the building is older
  • When you need the work done

Send details, get a quote, we seal, guaranteed: that’s how every job runs. The first step is to phone 01277 525 020 or email drawings and photos with what you know.

Commercial clients in Upperton

FMs need a contractor who is easy to get on site. Tell us what site paperwork you need, such as RAMS, an insurance certificate or CSCS details, and we will confirm with the quote.

We take on planned maintenance as well as one-off repairs: resealing failed joints building by building, on a schedule that suits your budget. Sites in Upperton can sit alongside others in a wider programme across West Sussex.

Maintenance after handover

Your facilities or cleaning team can help the joints last. Pass these on to them:

  • Brief following trades on areas that have been sealed
  • Note which sealant went where at handover
  • Bring the mastic contractor in after the last trades are through
  • Stick to the specified sealant rather than a generic substitute

If a joint is damaged after sealing, flag it early. Snags can be picked up in a planned close-out visit.

Frames with gaps too wide for sealant need sorting before the mastic goes on. Filling a wide gap with sealant alone sets up a failure so packing or adjustment by the installer comes first. We raise them during our first walk of the area.

What the job involves on each surface

External facade and movement joints

Movement joints in the facade are sealed with a product suited to the expected movement. We set the depth with backing rod to avoid three-sided adhesion.

Bathrooms, en suites and washrooms

Sanitary joints around baths, showers, basins and WCs need anti-mould sanitary silicone. Each joint is prepared, sealed and finished with a neat tooled line and baths are loaded where appropriate before sealing.

When it isn’t the sealant

A few problems need another trade or a different fix, and we say so rather than covering them up:

  • Designing joint widths or choosing the specification (that sits with the designer)
  • Damage to finishes by other trades after we have sealed
  • Deciding which fire-stopping product a penetration needs

If in doubt, call the office on 01277 525 020 or email us and we will say what we think.

Where we work in Upperton

  • Sanitary and kitchen joints
  • Window and door perimeters
  • Internal decorators’ caulk
  • Brick and block movement joints
  • Floor and skirting junctions
  • Cladding and panel joints

Sites and facades in and around Upperton

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, so external mastic is timed for workable conditions and agreed with the site manager. Upperton lies roughly 42 miles out from central London. Towns within reach of London tend to keep building, from flats to offices and schools, and each scheme needs its mastic sealed to programme.

On a healthcare site such as Midhurst Community Hospital, 4.3 miles to the west of Upperton, new blocks and refurbishments go on while the hospital keeps running, so mastic work is sequenced carefully. Hotels like The Angel Hotel (1.4 miles south-east of Upperton) rarely close for long, so refurbishment mastic is phased floor by floor. Older buildings in the area around Upperton, such as Petworth House, which lies south-east of Upperton, need care when sealed: the product has to suit soft or historic materials.

Upperton is about 12 miles north-east of Chichester, in West Sussex. Across the GU28 postcode area, it works the same way: send details, get a fixed quote, we seal, and the work is guaranteed. Our West Sussex coverage takes in 373 places, large and small. For work in that direction, see our Portsmouth page.

We take on mastic packages across the GU28 postcode area, for business premises of every kind. Nearby places we also cover include Tillington (1 mile south-east), Hampers Green (1 mile east), River (1 mile west), Petworth (1 mile south-east) and Rotherbridge (2 miles south) for mastic packages. Bigger towns within reach include Horsham (14 miles east), Bognor Regis (14 miles south), Chichester (12 miles south-west), Littlehampton (14 miles south), Rustington (14 miles south-east) and Storrington (10 miles south-east).

Near you in Upperton

Nearby you will also find Midhurst Community Hospital (4.3 miles west) and Coultershaw Heritage Site (2.2 miles south). Open spaces near Upperton include Graffham Common and Blackdown.

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