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

Mastic contractors in Portfield

Planning work on a mastic package in Portfield? We assess it, carry out the work and guarantee our workmanship for 12 months.

  • Failed sealant in an existing building being refurbished
  • Perimeter gaps outside the sealant’s range
  • Bath and shower joints scraped during the final clean
1
Send details
Send the specification, photos or a marked-up plan.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
Covering the South East & Scotland
CHAS & Constructionline
£5m public liability

Construction mastic for Portfield sites

Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.

How we handle construction mastic in Portfield

Getting a subcontractor through site induction should be simple. We’re a Constructionline member and CHAS accredited, and every applicator holds a CSCS card, with public liability insurance in place. RAMS, an insurance certificate and CSCS details can be confirmed with the quote if you tell us what you need. We work on window and door perimeters, internal decorators’ caulk and floor and skirting junctions, and what we are called in for most is frame perimeters left unsealed or poorly sealed and sanitary sealant damaged by following trades. Looking for mastic applicators who cover Portfield? We have been sealing commercial buildings since 2005, with CSCS-carded applicators.

Around places like Portfield, a lot of construction is the conversion of older buildings, and the sealant at those junctions has to cope with two materials that move differently, in a colour the planners or architect are happy with.

The 12-month guarantee is for workmanship rather than wear and tear. How long a sealant joint lasts depends on movement, exposure, cleaning and use, so we are clear about what is covered before work starts.

The Mastic Doctor team beside their liveried vans in front of an office building
Where
Portfield (PO19, PO20, PO18)
Region
West Sussex
Cover
12 months on our workmanship
Quotes
Quoted before any work starts
Call
01277 525 020
Last updated
3 November 2026

Why it’s worth doing now in Portfield

When a package runs over budget, downgrading the product is a common first thought. The saving is small next to the cost of callbacks and defects. Where an alternative is genuinely suitable, we will say so. A failed joint lets water into a building whatever its size. Early resealing avoids the damage that follows a leak.

Pricing mastic packages depends on how many there are, their condition and the access, and any specification that applies. Call for a quote.

Why clients in Portfield choose us

  • Fully insured, including public liability cover
  • Constructionline member for supplier checks
  • 12 months’ guarantee on every job
  • Work to your specification and the manufacturer’s guidance

See how commercial sealant jobs are priced and how we’re accredited.

Questions we are asked in Portfield

Can you take on a job at a hospital such as St Richard's Hospital?

Yes, hospitals are one of the sectors we cover. Work is phased so departments keep running, under the site’s own rules.

Could you schedule work at a campus like University of Chichester for the vacation?

Yes. Tell us the term dates, vacation periods and access windows, and we will plan the work around them. Tell us which site documents you need, such as RAMS, our insurance certificate or CSCS details, and they’re confirmed with the quote.

What site paperwork can you supply?

Let us know which documents the site needs, such as RAMS, an insurance certificate or CSCS details, and we’ll confirm them with the quote.

Will you come and look before quoting?

It depends on the job. Simple work can often be priced from photos, and bigger or more complex jobs normally get a visit.

Does weather matter for sealant work?

Outside, yes. The joint has to be dry and within the product’s temperature range, so damp, frosty or very cold days can stop external work. Internal work is rarely affected.

Do you have public liability insurance?

Yes. We’re fully insured, including public liability cover.

When can the area be used after sealing?

We will confirm how long the chosen product needs to cure.

What the job involves on each surface

Fire-rated sealant where specified

Fire-rated sealant is one type of fire-stopping product. Collars, wraps, batts and boards are specified for other services so we will flag where the detail needs something different. Record requirements are agreed with the quote.

Internal decorators’ caulk

Caulking is often done in a hurry by whoever’s on site. A neat, consistent caulk line makes the decorators’ job quicker and reduces snags.

Doing it in-house

Certain joints really need a specialist: for instance fire-rated seals that must match a tested detail, trafficked floor joints and external movement joints. Getting these wrong usually costs more in the end than doing them right.

There’s also the paperwork. Many sites expect CSCS cards, RAMS and proof of insurance, and we will confirm the paperwork you need with the quote.

New build and refits around Portfield

Portfield is in the South East, one of the UK’s drier regions. 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. There are a number of hotels within about 2 miles of Portfield. When hotels extend or refit, the work is normally squeezed between peak periods, mastic included.

When a college such as Chichester College, 1.2 miles west of Portfield, builds or refurbishes, the mastic package typically has to fit around students and staff. New wings at hospitals like St Richard's Hospital, 0.6 miles to the north-west of Portfield, bring long runs of window and panel joints to seal. Hotels like East Walls Hotel (0.6 miles west of Portfield) rarely close for long, so refurbishment mastic is phased floor by floor.

Portfield is about 1 mile east of Chichester, in West Sussex. Commercial clients in Portfield can call on us for mastic packages, as part of our coverage of West Sussex. Portfield is one of 373 places in West Sussex on our list for mastic packages. There’s a separate page for Portsmouth, roughly 14 miles from Portfield.

Commercial sites across PO19, PO20 and PO18 are covered. Streets here include Kent Road, York Road and Spur Road, and sites on any of them can send details for a fixed quote. Access to Portfield is via the A259 and A285. Sites close to Portfield are covered too, including Chichester (1 mile west), Westhampnett (1 mile north-east), Shopwyke (1 mile east), Maudlin (1 mile north-east) and North Mundham (2 miles south). Further afield, our area takes in Bognor Regis (5 miles south-east), Selsey (7 miles south), Littlehampton (10 miles east), Rustington (11 miles east), Storrington (15 miles north-east) and Angmering (12 miles east).

What’s near Portfield

Recent enquiries here include premises near The Prebendal School, The East Gate Public House and Chichester High School For Girls, among other places. The closest station to Portfield is Chichester station, roughly 0.9 miles west of the centre. A little further out are The Chichester City Museum (0.6 miles west) and Chichester Castle (0.6 miles west). Green spaces nearby include Kingley Vale National Nature Reserve and Stoke Down.

Map of Portfield © OpenStreetMap contributors

From enquiry to sign-off

Where the site stays busy, the work is phased so only one area is out of use at a time. Each area is protected, prepared and sealed, then handed back before we move to the next. For a site in Portfield, we plan so the whole job is done in one go where possible. Photos with rough sizes let us arrive with everything needed.

  1. We walk the site or review drawings to understand the package.
  2. You receive a fixed quote covering scope, products and sequence.
  3. Paperwork is agreed and applicators are inducted on site.
  4. We seal plot by plot or floor by floor in line with the programme.
  5. Any frame gaps or issues outside our scope are flagged to the site team.
  6. The package is closed out, snags cleared and backed by our 12-month guarantee.

Preparing the site

  • Agree which areas must stay open
  • Share the asbestos register for older buildings
  • Share your working hours and any access restrictions

Ask for a quote

Send details, get a quote, we seal, guaranteed: that’s how every job runs. To take the first step, call the office on 01277 525 020 or email the details over.

Get a quick quote

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Quoting for work in Portfield

Your fixed quote is built from the real scope. It takes account of:

  • Joint width, depth and condition
  • Any access equipment needed
  • Quantities, in metres or numbers
  • The product specified

The work involved drives the cost: removing old material, preparing the joints, the product, the access and how the work is phased. Call for a fixed quote and we will explain how it’s made up.

Details that help us quote

A good diagnosis starts with the right details. Let us know:

  • Where the site is, with the postcode
  • Your programme or deadline
  • The asbestos register, for older buildings
  • What the building is and how it’s used

Send us photographs, drawings or a joint schedule are often enough for a fixed quote. Where a site visit makes more sense, we’ll arrange one.

Commercial clients in Portfield

CHAS accredited and a Constructionline member, we make supplier vetting simple. We’re fully insured, and our insurance certificate can go 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. Portfield can form part of a wider programme.

Accreditations

Trusted. Accredited. Insured.