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

Mastic Sealing in Racton

Mastic sealing for building owners, managing agents and housing associations throughout Racton and nearby, by CSCS-carded applicators. Fully insured and CHAS accredited.

  • Damp patches beside frames
  • Mastic failing across several blocks on an estate
  • Draught complaints from residents or tenants
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
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
South East, London & Scotland
CHAS & Constructionline
£5m PL insurance

Mastic sealing for businesses in Racton

Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.

About our mastic sealing in Racton

Owners and agents typically inherit a building’s mastic rather than choose it and it slowly wears out: window perimeters, door frames, external joints and communal junctions all rely on it. When it hardens, splits or pulls away, water and draughts follow along with complaints. The enquiries we see most involve water getting in round frames after rain and no planned programme for sealant, on window and door perimeters on blocks, communal entrances and stairwells and shopfronts below residential blocks. Looking for mastic applicators who cover Racton? We’ve been sealing commercial buildings since 2005, CHAS accredited and a Constructionline member.

In and around smaller places like Racton, 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.

We stand by our work with a 12-month guarantee. That covers our preparation and application, and we come back if anything isn’t right.

Location
Racton (PO18, PO10)
Region
West Sussex
Cover
12 months on our workmanship
Price
A fixed quote before we start
Call
01277 525 020
Updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

Owners, agents and contractors

Facilities managers want contractors who arrive with the paperwork sorted. Tell us what site paperwork you need, such as RAMS, an insurance certificate or CSCS details, and we will confirm with the quote.

CHAS accredited and a Constructionline member, we are straightforward to vet for your supplier list. We’re fully insured, and our insurance certificate can go with the quote.

Why deal with it now?

Mixed repairs by different contractors leave a patchwork of products and colours. A block-wide reseal gives one product, one colour and one guarantee. Converted and older buildings near places like Racton tend to move, and aged sealant cracks. The right product, sized to the joint, copes much better.

Access can matter as much as the joints themselves: joints within easy reach take less time than ones that need access equipment. Tell us how the joints are reached and call for a quote.

Why choose Mastic Doctor in Racton

  • A Constructionline member, so easy to vet
  • Fixed quotes based on photos, drawings or a visit
  • 12-month guarantee on workmanship
  • Coloured sealants to suit the setting, where available

Take a look at what affects the cost and our accreditations and insurance.

What we can’t put right

Before quoting, we check that sealant is the right answer. It won’t put right:

  • Leaks from above rather than through a joint
  • Masonry that has broken away beside the joint
  • Old mastic suspected of containing asbestos, which must be tested and dealt with by a specialist first

Not sure which it is? You can call 01277 525 020 or use the quote form and we will tell you honestly.

Joints and surfaces we work on

  • Balcony and threshold joints
  • Communal kitchens and washrooms
  • Communal entrances and stairwells
  • External wall and movement joints
  • Shopfronts below residential blocks
  • Window and door perimeters on blocks

Blocks and managed buildings in Racton

Racton is within about 3 miles of the coast. For owners and agents with buildings near the sea, exposed elevations are where frame mastic fails first; plan inspections around that. At about 55 miles from central London, Racton is within reach of the capital. Around the capital’s commuter belt, managing agents look after many blocks close to stations and town centres; their frame mastic often ages block-wide.

For owners of several units at places like Hambrook Business Park, 1.1 miles south-east of Racton, one programme can deal with frame and external mastic across the lot. Blocks of flats and mixed-use buildings often cluster around stations such as Southbourne station (2.1 miles south of Racton) and their window and balcony mastic tends to age at the same rate across a building. Historic properties like Warblington Castle, 3.9 miles south-west of Racton, show the age of some local stock, where frame mastic must suit soft brick or stone.

Racton is about 3 miles north-east of Emsworth, in West Sussex. Across the PO18 postcode area, the process is the same: send details, get a fixed quote, we seal, and the work is guaranteed. We work across 373 places in West Sussex, from busy centres to rural villages. For work in that direction, see our Portsmouth page (9 miles or so).

Business premises anywhere in PO18 and PO10 are within our area. Nearby places we also cover include Lordington (1 mile north), Walderton (1 mile north-east), Funtington (1 mile east), Hambrook (2 miles south) and West Ashling (2 miles south-east). Bigger towns within reach include Bognor Regis (11 miles south-east), Chichester (6 miles south-east), Selsey (11 miles south-east), Portfield (6 miles south-east), Yapton (13 miles east) and East Wittering (8 miles south).

Around Racton

Locally, jobs take us to sites close to Stansted Park. The closest station to Racton is Southbourne station, roughly 2.1 miles south. A little further out are Emsworth Museum (2.8 miles south-west) and Havant War Memorial Hospital (4.4 miles west). For a walk, there’s Walderton Down and Kingley Vale National Nature Reserve.

Map of Racton © OpenStreetMap contributors

Your questions answered

Will you take on a block within reach of Southbourne station?

Yes. Blocks of any size are within what we do. Photos of each elevation help us quote accurately.

Is Racton too far out for you?

No. Places such as Racton are covered as much as the big towns. We cover Greater London and the counties of the South East. We plan jobs in smaller places so return trips are kept to a minimum.

Do you seal on top of existing sealant?

No, never. Overlaying old sealant is a frequent cause of early failure, so everything comes out first.

Do you work for managing agents and housing associations?

We do. Managing agents, property factors in Scotland, housing associations and landlords with block or commercial portfolios are our main clients for this work and work can be quoted per building or as a whole.

Is mastic sealing guaranteed?

Every building we reseal has a 12-month guarantee. It applies to our workmanship rather than damage or problems with the frames.

What if the old mastic contains asbestos?

Asbestos removal isn’t part of our work. Anything suspect is tested before we carry on in line with the dutyholder’s asbestos management.

How long does a job like this take?

The duration is planned around your programme and the access we are given. We’ll give you an estimate of time on site when we quote.

Aftercare for building managers

A few simple habits keep the new joints working:

  • Have the asbestos survey to hand for older buildings
  • Include mastic in your cyclical inspections
  • Encourage occupiers to report problems at frames
  • Keep bins and bikes away from communal door frames

Protect entrance and corridor joints from knocks where possible. Knocks cause many early failures in communal areas.

Left open, joint edges in render, brick or frames can deteriorate. Then the edges may need repairing first.

From enquiry to sign-off

Inspect, seal, sign off: every visit follows that pattern. We inspect the joints and confirm what’s in scope, then we prepare and seal each joint with the specified product, and the job ends with a walk round and sign-off. Smaller jobs around Racton can be grouped with others nearby. You will have a fixed quote before work starts.

  1. We inspect each building and record the joints that have failed.
  2. The quote is fixed and split as suits you.
  3. We agree the programme and dates with you.
  4. Failed sealant is removed and the faces prepared.
  5. New sealant goes in with backing rod and primer where needed.
  6. We check the finished work and confirm the guarantee.

Getting the site ready

  • Send any specification or drawings in advance
  • Share the asbestos register for older buildings
  • Make sure the joints can be reached

Ask for a quote

Tell us about the building, the joints and when you need the work done, and a fixed quote will follow. The easiest way is to call 01277 525 020 or email a schedule or drawings.

Get a quick quote

Read more

What affects the price in Racton

Each job is priced on its own details. The main factors are:

  • The product specified
  • Distance, for remote addresses
  • Site requirements such as inductions and permits
  • Removal of failed or old sealant

Every site prices differently: joint size, product, access and site hours all play a part. A fixed quote follows once we understand the job.

What to include in your enquiry

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

  • The postcode of the building
  • Rough lengths or quantities, or drawings if you have them
  • Photos of the joints, close up and from further back
  • Whether the building will be occupied during the work

Quotes are fixed against the scope you send, so the cost is agreed before work starts. To start the process, call the office on 01277 525 020 or email a schedule or drawings.

Accreditations

Trusted. Accredited. Insured.