The Mastic Doctor team standing beside their branded vans outside an office building
Isle of Wight · England

Mastic sealing for building owners and managing agents in Adgestone, Isle of Wight

Planning work on a mastic joint in Adgestone? We look at it, seal it with the right product and hand it over with a 12-month guarantee.

  • Water getting in round frames after rain
  • A mix of products and colours from past repairs
  • Window mastic that has split and shrunk
1
Send details
Send the specification, photos or a marked-up plan.
2
Get a quote
A fixed quote for the work, with the scope in writing.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
Covering the South East & Scotland
CHAS & Constructionline
Fully insured: £5m PL

Need mastic sealing in Adgestone?

Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.

How we handle mastic sealing in Adgestone

For over 20 years we have resealed joints for owners, agents and landlords. Every applicator holds a CSCS card, and the work is backed by public liability insurance. Each building we complete carries a 12-month guarantee on our workmanship. If you have old repairs sealed over failed mastic and leaks at window and door perimeters, we can put it right, whatever the surface. A single leaking joint is often how a building in Adgestone first comes to us: we check the joints around it and give you an honest view of what needs doing now and what can wait.

For owners with a single building near Adgestone, we plan to finish in one visit where possible. Photos of each elevation help us quote accurately.

Our workmanship is guaranteed for 12 months. If a joint we sealed fails because of how it was installed, we come back and put it right.

Location
Adgestone (PO36)
Region
Isle of Wight
Guarantee
12 months on our workmanship
Quote
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

What happens if it’s left?

Replacing mastic before water gets in is a planned job. After water has got in, there may be damp, damaged plaster or decoration to put right too and occupiers notice. Older rural buildings around Adgestone move with the seasons, and rigid or tired sealant can’t keep up. A sealant with the right movement capability, correctly sized, lasts far better.

The price depends on the quantity of joints, how much old material needs removing and how the joints are reached. Call for a quote when you’re ready.

Why clients in Adgestone choose us

  • One contact handling all your sites
  • Standard and matched colours in many product ranges
  • Sealing commercial buildings since 2005
  • RAL and finish matching where the product range allows

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

Your questions answered

Can you work at a site such as Spithead Business Centre, by Adgestone?

Yes. We cover Adgestone and the area around it, including industrial estates, business parks and retail parks such as Spithead Business Centre. A few photographs and the unit address let us price the work.

Our building in Adgestone is near the coast: does that change the sealant?

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.

How do we ask for a quote?

There are four steps: send details, get a quote, we seal, guaranteed. The first step only needs photographs and a postcode.

Can you work to our specification?

Yes. Send it with your enquiry, and we’ll price the work to it, flagging anything that needs clarifying.

How do you handle work on occupied blocks?

Residents and tenants carry on as normal. If any flats or units need access, we will tell you in advance so it can be arranged.

Will you quote for a small job?

Whatever the size, the process is the same: details, then a fixed price, then sealing, then a 12-month guarantee.

Does the weather affect the work?

It can, for external work. 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.

From enquiry to sign-off

We follow your site rules from the start: signing in, inductions and any permit to work. Once we’re cleared to begin, the joints are worked through in the order agreed with your site contact. If others near Adgestone need work, visits can be combined, which keeps travel down. A fixed quote is given before anything starts.

  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 programme is fixed with you, including dates you can pass on to residents or tenants.
  4. Old sealant is stripped and each face prepared back to firm material.
  5. Deep joints get backing rod, faces are primed if the manufacturer specifies it, then the joint is sealed and tooled.
  6. Completed joints are inspected and carry a 12-month workmanship guarantee.

Before we start on site

  • Confirm the product named in the specification
  • Warn occupants and staff about the work
  • Tell us your opening times and when work is allowed

Ask for a quote

Send us photographs, drawings or a joint schedule and a fixed quote comes back to you. Where a site visit makes more sense, we will arrange one.

Get a price

Related advice

Common problems we fix in Adgestone

Many failed joints were sealed without backing rod so the mastic is bonded on three sides. That three-sided adhesion stops it stretching and it tears.

Things that normally lead to an enquiry:

  • Draught complaints from residents or tenants
  • Mastic failing across several blocks on an estate
  • Complaints coming in block by block
  • Window mastic that has split and shrunk

If your remit includes a building such as Brading Church of England Controlled Primary School, frame and door mastic can be programmed for the holidays.

Questions to ask before you book

  • Is the sealant right for the movement and the substrate?
  • Their plan for phasing and protecting the area
  • What level of public liability insurance do they hold?
  • Do they follow the manufacturer’s priming guidance?

Choosing a commercial sealant contractor

Mastic sealing around Adgestone: points for this area

The sea is no more than about 2 miles from Adgestone. On buildings near the shore, the side facing the weather usually needs its mastic renewed first, so it’s worth inspecting those sides more often. Rainfall across the South East, Adgestone included, is lower than in many parts of the UK. Outside work still depends on dry joints, and south- and west-facing elevations, which take the most sun and rain, often age first.

If you own or manage units on a site such as Spithead Business Centre, 2.1 miles south-west of Adgestone, failed mastic on frames, door surrounds and external joints can be dealt with unit by unit. Older community buildings, Church of St. John the Evangelist among them, often have frames of mixed ages whose mastic varies.

Adgestone is about 4 miles south of Ryde, in the Isle of Wight. Anywhere in PO36, it works the same way: details in, fixed quote out, then sealing and a 12-month guarantee. We work across 125 places in the Isle of Wight, from busy centres to rural villages. Sites around Portsmouth have their own page, about 10 miles away.

Business premises anywhere in PO36 are within our area for mastic joints. If your site is on Upper Road, Lower Road and Lower Adgestone Road or close by, send details and we will quote for mastic joints. Just outside Adgestone, we also work in Morton (1 mile east), Yarbridge (1 mile east), Brading (1 mile north-east), Alverstone (1 mile south-west) and Sandown (1 mile south). Nearby towns on our patch include Newport (6 miles west), Ryde (4 miles north), Cowes (9 miles north-west), Shanklin (3 miles south), Ventnor (6 miles south) and East Cowes (8 miles north-west). Remote and island addresses take more planning, from travel and ferries to the weather, so give the site location in your enquiry.

What’s near Adgestone

Recent enquiries here include premises near The Bay Church of England School and Sandown Bay Academy and the streets around them. The closest station to Adgestone is Sandown station, roughly 1.1 miles south of the centre. A little further out are Sandown Castle (1.3 miles south-east) and Brading Waxworks (1 mile north-east). The countryside around Adgestone includes Alverstone Mead and Brading Down.

Map of Adgestone © OpenStreetMap contributors

What affects the price in Adgestone

To price the job, we consider:

  • Any access equipment needed
  • The size and state of each joint
  • Distance, for remote addresses
  • Induction, permit and paperwork requirements

The work involved drives the cost: stripping out, preparation, sealing, access and phasing. Call for a quote and we’ll explain how it’s made up.

Sending details for a quote

A good diagnosis starts with the right details. Tell us:

  • What the building is and how it’s used
  • Approximate linear metres or a joint schedule
  • Asbestos survey details if the building is older
  • Photos of the joints, close up and from further back

For a fixed quote, call 01277 525 020 or email us with the site address and an outline of the work. Our quote form is another easy route.

Aftercare for building managers

A few simple habits keep the new joints working:

  • List the paperwork your organisation requires when you send details
  • Keep bins and bikes away from communal door frames
  • Keep a record of when each building was resealed
  • Plan resealing building by building rather than complaint by complaint

Include sealant in planned building inspections. Watch for splits, open gaps, hard or chalky surfaces and mastic pulling away and record where they are.

The longer failed joints are left, the more likely the substrate edges break up. Once that happens, repairs come before resealing.

Work for main contractors and building owners

As a CHAS accredited contractor and Constructionline member, we make supplier vetting simple. Our insurance certificate can be sent along with the quote.

Planned maintenance programmes are welcome: resealing failed joints building by building, on a schedule that suits your budget. Adgestone can form part of a wider programme.

Accreditations

Trusted. Accredited. Insured.