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

Mastic sealant contractors in West Ashling

Mastic sealing for building owners, managing agents and housing associations in West Ashling and across West Sussex. CHAS accredited and fully insured, with a 12-month guarantee.

  • Window mastic that has split and shrunk
  • Repeated reactive repairs to the same buildings
  • Old repairs sealed over failed mastic
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
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
South East, London & Scotland
CHAS accredited
£5m public liability

Mastic sealing in West Ashling

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

For managing agents and facilities managers

Main contractors use us as their sealant subcontractor on new-build and refurbishment projects. Programme, specification and site rules come first, with CSCS-carded applicators on site.

We take on planned maintenance as well as one-off repairs: resealing failed joints building by building, on a schedule that suits your budget. West Ashling can form part of a wider programme across West Sussex.

How we handle mastic sealing in West Ashling

Mastic Doctor has sealed joints on commercial and residential blocks since 2005. Every applicator holds a CSCS card and we hold public liability insurance. Resealed mastic joints in West Ashling carry our 12-month guarantee. We work on communal entrances and stairwells, balcony and threshold joints and external wall and movement joints, and the failures we are asked to look at most are cracked, hardened mastic round windows on a block and movement joints with sealant missing. A specialist sealant contractor works differently from a general builder: on jobs in West Ashling, preparation and product choice get the time they need.

For buildings around smaller places like West Ashling, we group work so one trip covers it. Send photos of the frames and joints and we’ll give a fixed quote.

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

Where
West Ashling (PO18)
Wider area
West Sussex
Guarantee
12 months on every job
Price
Quoted before any work starts
Telephone
01277 525 020
Updated
3 November 2026
The Mastic Doctor team standing beside their branded vans outside an office building

When it isn’t the sealant

Being straight saves everyone time. Fresh joints won’t solve:

  • Water coming in from the roof or rainwater goods
  • Old mastic suspected of containing asbestos, which must be tested and dealt with by a specialist first
  • Frames that are rotten, warped or broken

If in doubt, call 01277 525 020 or send details through our quote form and we’ll say what we think.

Where we work in West Ashling

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

Do you need mastic sealing in West Ashling?

Poor preparation explains many failed joints. Where the faces weren’t cleaned or primed as specified it comes away from one face.

Most enquiries start with something like this:

  • The same joint failures repeated across a portfolio
  • Complaints coming in block by block
  • Damaged joints in communal entrances and corridors
  • Damp patches beside frames

Site managers at schools like Funtington Primary School can fit frame mastic into the summer works.

What to look for in a quote

  • Will RAMS and insurance details be available?
  • Health and safety accreditation such as CHAS
  • How the joint faces will be prepared and primed
  • What the guarantee covers, and for how long

Our contractor checklist

On site: what to expect

Our CSCS-carded applicators arrive with the sealants, primers and backing rod the job calls for. Any old material is cut back to clean, sound faces, primer goes on where the manufacturer specifies it, and the sealant is tooled off neatly. Smaller jobs around West Ashling can be grouped with others nearby, which keeps travel down. You will have a fixed quote before work starts.

  1. A building-by-building inspection lists the failed joints.
  2. The quote is fixed and split as suits you.
  3. We agree the programme and dates with you.
  4. Old mastic is removed and the joint faces prepared.
  5. New sealant goes in with backing rod and primer where needed.
  6. We check the finished work and confirm the guarantee.

Preparing the site

  • Send asbestos survey details if the building is pre-2000
  • Point out parking and an unloading spot
  • Move anything stored against the joints

Request a quote

A good quote starts with a clear picture: the joints involved, quantities, access and the product called for. Send what you have, and we’ll arrange a site visit if anything is unclear.

Ask for a quote

Read more

Mastic sealing around West Ashling: how the place shapes the job

The 2 miles around West Ashling include two care or nursing homes. Frame mastic on care buildings is best renewed elevation by elevation, with the manager deciding timings. Rainfall across the South East, West Ashling included, is lower than in many parts of the UK. Outside work still depends on dry joints, while the elevations that take the most sun tend to show hardened mastic first.

For agents with blocks near Bosham station, 1.2 miles south of West Ashling, a block-wide mastic programme deals with frames, balconies and entrances in one go. If you’re responsible for a building such as The Parish Church of St Mary, frame and door mastic needs the same attention as any other property.

West Ashling is about 3 miles north-west of Chichester, in West Sussex. We send applicators to West Ashling for mastic joints. We work across 373 places in West Sussex, from busy centres to rural villages. Sites around Portsmouth have their own page, roughly 11 miles from West Ashling.

Work on mastic joints is covered throughout PO18, for business premises of every kind. Streets here include Heather Close, Ashling Close and Portal Close, and sites on any of them can send details for a fixed quote. If your building is just outside West Ashling, we cover East Ashling (1 mile east), Funtington (1 mile north-west), Broadbridge (1 mile south), Hambrook (1 mile west) and West Stoke (1 mile north-east). Bigger towns within reach include Bognor Regis (9 miles south-east), Chichester (3 miles south-east), Selsey (9 miles south), Littlehampton (14 miles east), Rustington (15 miles east) and Portfield (4 miles east).

What’s near West Ashling

We work on buildings around The Horse And Groom Public House and the streets around them. The nearest railway station is Bosham station, about 1.2 miles south of the centre. Well-known places in the area include Chichester Centre (3.6 miles east) and Chichester Castle (3.5 miles south-east). Not far away are Kingley Vale National Nature Reserve and Stoke Down.

Map of West Ashling © OpenStreetMap contributors

How the job changes by surface

Planned maintenance

We can work into your cyclical maintenance plan on a timetable you set.

Tenement and older buildings

Some old mastics in pre-2000 buildings contain asbestos and the register is checked before anything is disturbed. Suspect material is tested before work continues.

FAQs: West Ashling

Do you work for managing agents with blocks near Bosham station?

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

Is a smaller place like West Ashling outside your area?

Not at all. West Ashling is within our area. We work across Greater London and the South East. Where we can, we group nearby jobs to make the most of each trip.

Will residents or tenants be disturbed?

Occupiers stay in the building throughout. We flag any areas that need internal access well before the dates so you can arrange it with occupiers.

How many days will you need on site?

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

Does the weather affect the work?

It can, when the joints are outside. Sealant won’t bond properly to a wet or frosty joint, so we watch the forecast and rearrange outside work if we have to. Internal work is far less affected.

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, because fresh silicone will not bond with aged silicone.

Can you seal joints high up on a block?

Access is discussed and agreed before the quote is fixed. Tell us the building height and any access already in place and we will confirm the approach in the quote.

When to bring in a specialist

Certain joints really need a specialist: fire-rated seals that must follow a tested detail, trafficked floor joints and external movement joints among them. A poor seal in places like these tends to cost more to put right later.

Redoing a failed joint normally costs more than getting it right at the outset, since all of it has to come out and the faces be cleaned back again. That’s why many clients bring in a specialist from the beginning.

Accreditations

Trusted. Accredited. Insured.