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

Mastic sealing for building owners and managing agents in Highleigh, West Sussex

Looking for mastic sealing in Highleigh? It’s simple: send details, get a quote, we seal, guaranteed.

  • Repeated reactive repairs to the same buildings
  • The same joint failures repeated across a portfolio
  • Cracked, hardened mastic round windows on a block
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
Covering the South East & Scotland
CHAS accredited
£5m public liability

Mastic sealing across Highleigh

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

Do you need mastic sealing in Highleigh?

The edges of the material itself sometimes break away, such as crumbling render, brick arrises or frame edges. We will tell you if the joint edges need repairing before resealing.

Look out for the following:

  • Cracked, hardened mastic round windows on a block
  • Draught complaints from residents or tenants
  • Complaints coming in block by block
  • A mix of products and colours from past repairs

Student accommodation around universities such as University of Chichester (4.6 miles north-east of Highleigh) is typically managed block by block, which suits a planned mastic programme.

What your quote should include

  • Proof of insurance
  • What site paperwork they can supply
  • How the existing material will be dealt with
  • Will CSCS-carded applicators be on site?

How to choose a sealant contractor

Mastic sealing in Highleigh, done properly

For over 20 years we have resealed joints for owners, agents and landlords. Our applicators are CSCS-carded and we hold public liability insurance. Resealed mastic joints in Highleigh carry our 12-month guarantee. We work on communal kitchens and washrooms, communal entrances and stairwells and shopfronts below residential blocks, and what we are called in for most is leaks at window and door perimeters and draught complaints from residents or tenants. Most enquiries from Highleigh start with one failed joint and grow into a wider look at the building: we look at the rest while we are there and tell you what we find.

In and around smaller places like Highleigh, landlords and agents often look after small groups of housing association properties, converted farm buildings and community buildings. Mastic around frames and on external joints wears out in time, whatever the building.

The 12-month guarantee is for workmanship rather than wear and tear. Sealant wears with time, and movement, weather, cleaning and use decide how fast, so we spell out the cover before we begin.

Location
Highleigh (PO20)
Wider area
West Sussex
Guarantee
12 months on our workmanship
Quotes
Quoted before any work starts
Call
01277 525 020
Last updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

Cost factors for mastic joints

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

  • The site’s rules and procedures
  • Backing rod, priming and other preparation
  • Which sealant the job calls for
  • Any access equipment needed

Small jobs and large programmes are priced from the same things: what’s in scope, how we reach it, what’s specified and when it needs doing. Call for a quote and we will put a fixed figure on it.

What to include in your enquiry

We can often quote from photographs and a few details. Please tell us:

  • Any specification or named product
  • Clear photographs of the problem areas
  • Asbestos survey details if the building is older
  • What the building is and how it’s used

Send us photos, drawings or a joint schedule and a fixed quote comes back to you. If the job needs a look first, we’ll arrange a site visit.

FAQs: Highleigh

Can being near the sea in Highleigh affect the sealant we need?

It can. Coastal exposure works external joints harder than inland weather. We choose the product for the exposure, prime where the manufacturer requires it and size the joint for its movement.

Can you work at a site such as Enborne Business Park, by Highleigh?

Yes. We cover Highleigh and the area around it, including industrial estates, business parks and retail parks such as Enborne Business Park. A few photos and the unit address let us price the work.

Is any job too small?

Whatever the size, the process is the same: send details, get a fixed quote, we seal, guaranteed.

How long will the new sealant last?

There’s no fixed lifespan: movement, exposure, cleaning, traffic and the product all play a part. Sealant joints are maintenance items, so inspect them regularly.

Do you do block-wide mastic programmes?

Block-wide and estate programmes are common. You get a fixed quote per building or for the whole job.

Does the weather affect the 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. Inside work is seldom held up.

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.

Commercial clients in Highleigh

Hospitality, education, healthcare, office and retail clients book us directly too. We plan around the way the building is used, so guests, pupils, patients or staff are disturbed as little as possible.

Blocks and communal areas make up much of the work for housing associations and agents. Work can be phased so residents and staff keep access throughout, with each stage agreed with your site contact.

What happens if it’s left?

Piecemeal repairs over the years often leave mismatched sealant. A block-wide reseal gives one product, one colour and one guarantee. Older rural buildings around Highleigh move with the seasons, and rigid or tired sealant can’t keep up. The right product, sized to the joint, copes much better.

The price depends on how many linear metres there are, what has to come out first and how the joints are reached. Call for a fixed quote once you have the details.

Why clients in Highleigh choose us

  • Sealing commercial buildings since 2005
  • Constructionline member for supplier checks
  • RAL and finish matching where the product range allows
  • One phone line for London, the South East and Scotland

Take a look at our cost guide or how we’re accredited.

Blocks and managed buildings in Highleigh

Highleigh sits close to the coast, within about 2 miles. Sea-facing elevations take driven rain and salt, and their mastic shows it before the sheltered sides do, so it’s worth inspecting those sides more often. The South East is one of the drier parts of the UK. Even so, frame mastic only goes on in dry, workable conditions, and elevations facing the sun and the prevailing weather are usually where frame mastic ages first.

If you look after a block within reach of Chichester station, 3.9 miles to the north of Highleigh, frame and balcony mastic can be renewed on one programme. For a school such as Sidlesham Primary School, perimeter mastic on windows and doors is a holiday job.

Highleigh is about 3 miles north of Selsey, in West Sussex. Highleigh sits inside our coverage, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. Our West Sussex coverage takes in 373 places, large and small. Sites around Portsmouth have their own page, about 12 miles away.

If you need mastic sealing in PO20, the process matches everywhere else we work: send details, get a quote, we seal, guaranteed. If your site is on Critchel's Lane, Highleigh Road and Green Lane or close by, send details and we’ll quote for mastic joints. Sites close to Highleigh are covered too, including Almodington (1 mile west), Birdham (2 miles north-west), Somerley (2 miles west), Earnley (2 miles west) and Shipton Green (3 miles north-west). Nearby towns on our patch include Bognor Regis (5 miles east), Chichester (4 miles north), Selsey (3 miles south), Littlehampton (12 miles east), Rustington (13 miles east) and Angmering (15 miles east).

Near you in Highleigh

For rail, the closest station is Chichester station, roughly 3.9 miles north of the centre. A little further out are Chichester Castle (4.5 miles north) and Selsey Lifeboat Museum (3.5 miles south). Not far away are Pilsey Island.

Map of Highleigh © OpenStreetMap contributors

Diagnose, treat, sign off

Working in a building that stays open takes some planning. The work area is signed and kept contained, with routes through the building left open and move on in phases so staff and visitors can carry on around us. For work around Highleigh, we aim to finish in one visit, so photographs and measurements up front really help. Then the right materials arrive with us.

  1. We inspect the joints, building by building, and record what has failed and why.
  2. A fixed quote follows, split by block or building if that suits you.
  3. The sequence and the dates are fixed with you, giving you what you need to notify occupiers.
  4. Failed mastic is removed and the faces taken back to sound, dry material.
  5. Backing rod and primer go in where the joint and the product need them, then new sealant is applied and tooled.
  6. Each building is checked on completion and the work carries our 12-month guarantee.

What we need from you

  • Point out any areas we must not close
  • Explain the parking and delivery arrangements
  • Warn occupants and staff about the work

Quotes

The quickest route to a quote is a few photos and the site postcode. Send them through the quote form, or phone 01277 525 020 or email the details over if you’d rather talk the job through.

Get a price

Read more

What the job involves on each surface

Tenement and older buildings

Some old mastics in pre-2000 buildings contain asbestos and the register is checked before anything is disturbed. If it’s suspected, work stops until it’s tested.

Commercial and mixed-use buildings

Landlords with commercial portfolios have shopfronts, office entrances and external joints to look after. A planned programme suits multi-building portfolios.

Accreditations

Trusted. Accredited. Insured.