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

Facade Sealing in Bonchurch

Sealant work in Bonchurch for main contractors, managing agents and facilities managers: facade joint and window perimeter sealing on commercial buildings, with a fixed quote first.

  • Weathered facade joints that have lost their grip
  • Cold air coming in at window perimeters
  • Failed sealant on precast panel joints
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Signed off, with 12 months’ guarantee.
London, the South East & Scotland
CHAS & Constructionline
Fully insured: £5m PL

Facade sealing for Bonchurch sites

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

How we handle facade sealing in Bonchurch

External joints face UV, rain, temperature swings and building movement all year. How long a joint lasts depends on the movement it takes, its exposure, the product and how well it was installed. When the time comes, we cut the old sealant out completely and start again. We work on perimeter joints where frames meet the structure, window and door perimeters and cladding panel joints, and the failures we are asked to look at most are weathered facade joints that have lost their grip and leaks at window and door perimeters. Facilities teams, main contractors and managing agents in Bonchurch tend to want the same three things: a fixed quote, no surprises on site and a 12-month guarantee behind the result.

In the countryside around places like Bonchurch, conversion schemes put new frames into old stone, flint, brick or timber. Those joints need a sealant that suits an uneven, sometimes porous surface, and often a colour chosen for the building.

A 12-month guarantee applies to all our work. Should something we installed fail, ring 01277 525 020 or email us and we’ll come back to it.

Where
Bonchurch (PO38)
Region
Isle of Wight
Cover
12 months on every job
Quote
Quoted before any work starts
Call
01277 525 020
Page updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

Common problems we fix in Bonchurch

Not every failure is in the sealant: crumbling render, spalling concrete or flaking paint take the sealant with them. We tell you when the edges need repairing before resealing.

Clients normally get in touch after noticing one or more of the following:

  • Draughts around frames and panels
  • Damp patches beside frames after rain
  • Gaps between rainscreen or cladding panels
  • Weathered facade joints that have lost their grip

New units and refits on sites such as Ventnor Industrial Estate, 1.2 miles west of Bonchurch, need their panel and perimeter joints sealed to the specification.

Questions to ask before you book

  • Whether old or failed sealant will be cut out, not overlaid
  • How joint depth will be controlled
  • How they’ll work around occupants
  • Their public liability cover

How to choose a sealant contractor

From enquiry to sign-off

On arrival, we report to your site contact and complete whatever induction the building runs. Everything around the joints gets protected before anything is cut or cleaned, and the work usually takes a day or two for a few elevations, and longer where access has to be moved around the building. Jobs in and around smaller places like Bonchurch are typically planned as a single visit, so we ask for photos and rough sizes first. Then the right materials arrive with us.

  1. We plan access and the order of elevations with the client.
  2. Weather and temperature are checked against the product’s limits.
  3. Each joint is cut out and the edges inspected.
  4. Joints are cleaned, primed if required and fitted with backing rod.
  5. Sealant is gunned in and tooled hard onto both faces.
  6. We hand over with our 12-month workmanship guarantee.

What we need from you

  • Let building users know which areas are affected
  • Send asbestos survey details if the building is pre-2000
  • Tell us what induction or permit system the site runs

Getting a fixed quote

We quote a fixed sum against the scope you give us, so you know the figure before anyone is on site. To ask for one, speak to us on 01277 525 020 or send photos by email.

Ask for a quote

Advice

After the work

Keep the joints in good shape with a few simple steps:

  • Don’t wait for a second leak before calling
  • Avoid patch repairs on failed facade joints
  • Brief window cleaners about newly sealed joints
  • Keep the sealant details on the building file

Anything drilled through a facade joint breaks the seal. Ask the installer to reseal it properly using a matching sealant.

Use each reseal to correct the joint: the right width, backing rod and a sealant with enough movement capability. Repeating a faulty detail just repeats the failure.

Different surfaces, different methods

Render and coated surfaces

Where the joint will be painted over, a paintable hybrid or PU sealant may suit. The choice depends on the specification and finish.

Perimeter joints at frames and structure

These frame-to-structure joints take a lot of movement and weather. They are cut out, cleaned, backed and resealed using a sealant classified for that use.

What happens if it’s left?

Open facade joints also let air and dirt through: occupants notice draughts and cold spots around windows. A new seal closes the gap for both. Older rural buildings around Bonchurch 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.

Access often affects the price as much as the sealing: easy-to-reach joints are quicker than those that need equipment to get to. Tell us how the joints are reached and call for a quote.

Why appoint us

  • Joints cleaned back to sound surfaces
  • Public liability insurance in place
  • 12-month guarantee on workmanship
  • Coloured sealants to suit the setting, where available

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

Facade sealing in Bonchurch: the local picture

With the shore within about 1 mile, Bonchurch counts as a coastal location. On a coastal site, facade and perimeter joints face driven rain and, closer to the beach, salt, and the sealant, primer and backing need choosing with that in mind. There are a good number of hotels within about 2 miles of Bonchurch. Hotel refurbishments often run to tight programmes between busy periods, and perimeter and sanitary sealant has to keep up.

Further education sites such as St Catherine's College, 0.7 miles to the west of Bonchurch, are extended and refurbished from time to time, with mastic often programmed into the summer break. New wings at hospitals like Arthur Webster Memorial Hospital for Children, 2.5 miles north of Bonchurch, bring long runs of window and panel joints to seal.

Bonchurch is about 2 miles south of Shanklin, in the Isle of Wight. Businesses, contractors and managing agents in Bonchurch can call on us for facade joints. Across the Isle of Wight, 125 places are covered, including Bonchurch. For work in that direction, see our Portsmouth page (15 miles or so).

If you need facade sealing in PO38, the process matches everywhere else we work: details, then a fixed price, then sealing and a 12-month guarantee. Among the streets we cover are Shore Road, Leeson Road and Bonchurch Village Road. Nearby places we also cover include Luccombe Village (1 mile north), Ventnor (1 mile west), Steephill (2 miles west), Wroxall (2 miles north-west) and Shanklin (2 miles north) for facade joints. Nearby towns on our patch include Newport (9 miles north-west), Ryde (9 miles north), Cowes (12 miles north-west), Sandown (4 miles north), East Cowes (12 miles north-west) and Oakfield (8 miles north). 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 Bonchurch

In Bonchurch, that means premises near Bonchurch Inn, among other places. For rail, the closest station is Shanklin station, about 2.4 miles north. Well-known places in the area include Sandown Castle (4.3 miles north) and Arthur Webster Memorial Hospital for Children (2.5 miles north). Not far away are Alverstone Mead and St Boniface Down.

Map of Bonchurch © OpenStreetMap contributors

Honest limits

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

  • Movement beyond what any sealant can handle
  • Cracked or spalling substrates that need repair before sealing
  • Damp caused by condensation inside the building

If you are not sure, just ring 01277 525 020 or email us and we’ll give you a straight answer.

Where we work in Bonchurch

  • Coping and flashing joints
  • Cladding panel joints
  • Window and door perimeters
  • Perimeter joints where frames meet the structure
  • Stone and brick facade joints
  • Shopfront frames

Bonchurch: questions and answers

Is Ventnor Industrial Estate, near Bonchurch, within your area?

Yes. We cover Bonchurch and the area around it, including industrial estates, business parks and retail parks such as Ventnor Industrial Estate. Photos and a short description are enough for a first look.

Is a smaller place like Bonchurch outside your area?

No. Small places get the same service as large ones. Our area covers London and the South East counties. Where we can, we group nearby jobs to make the most of each trip.

Are you fully insured?

Yes. Our insurance certificate can be sent alongside the quote.

What do you charge?

Every job gets its own fixed quote. For yours, speak to us on 01277 525 020 or email a schedule or drawings with a description of the work.

Do you take on multi-site work?

Yes. Multi-site work and planned programmes are a core part of the service, with each site phased to suit its occupants.

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.

Can staff carry on working while you’re here?

In most cases, yes. Phased work can be planned so areas stay in use, with each area protected and signed.

Accreditations

Trusted. Accredited. Insured.