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

Facade and window perimeter sealing in Sidlesham Common, West Sussex

Facade sealing in Sidlesham Common, backed by over 20 years in commercial sealing. Fully insured and CHAS accredited.

  • Damp patches beside frames after rain
  • Gaps between rainscreen or cladding panels
  • Unsightly perimeter sealant on a visible elevation
1
Send details
Drawings, photos, a joint schedule or a site visit.
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
Signed off, with 12 months’ guarantee.
South East, London & Scotland
Constructionline member
£5m public liability

Facade sealing for businesses in Sidlesham Common

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

Your questions answered

Does the sea air around Sidlesham Common change the choice of sealant?

It can, yes: buildings near the sea take more wind-driven rain, and salt in the air nearer the shore. We choose the product for the exposure, prime where the manufacturer requires it and size the joint for its movement.

Is Sidlesham Common too far out for you?

Not at all. Sidlesham Common is within our area. Our area covers London and the South East counties. Send photos and a list of what needs doing, and we’ll plan the job to need as few trips as possible.

What will the job cost?

Each job is quoted on its own details. To get one, speak to us on 01277 525 020 or email drawings and photos with a description of the work.

Do you replace failed glazing units?

No. We don’t install glazing systems, windows or glass. We seal the joints around them, including perimeters where frames meet the structure.

Will you just go over the old sealant?

No. Sealing over old material is one of the classic causes of early joint failure, so everything comes out first.

Can you fit around our working hours?

The office is staffed Monday to Friday, from 8am until 5pm. Let us know your site hours and access windows, and the work will be planned around them.

Do you need to see the site first?

Many jobs can be quoted from photos, drawings or a joint schedule. Where they aren’t, we arrange a site visit before quoting.

Facade sealing in Sidlesham Common, done properly

Water ingress at window frames is a frequent reason facilities managers contact us. Very often the perimeter bead has cracked or lost its grip. If the evidence points away from the sealant, we say so before quoting. Site teams most often ask us about staining on stone next to old sealant and weathered facade joints that have lost their grip, on cladding panel joints, window and door perimeters and coping and flashing joints. Most enquiries from Sidlesham Common start with one failed joint and grow into a wider look at the building: we check the joints around it and give you an honest view of what needs doing now and what can wait.

Construction in and around smaller places such as Sidlesham Common is often barn conversions, small groups of houses or extensions to halls and schools. Perimeters, facade joints and internal sealant all need doing properly, however small the scheme.

A 12-month guarantee applies to all our work in West Sussex. Should something we installed fail, phone 01277 525 020 or send photos by email and we’ll come back to it.

Where
Sidlesham Common (PO20)
Wider area
West Sussex
Guarantee
12 months on every job
Price
A fixed quote before we start
Telephone
01277 525 020
Updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

What the job involves on each surface

Brick and stone facades

On masonry, the sealant has to suit a porous, textured surface. We avoid acetoxy silicone, which can stain some natural stone, and primers go on where specified.

Perimeter joints at frames and structure

Perimeter joints at frames often show their age first. They are cut out, cleaned, backed and resealed.

When to bring in a specialist

There’s also the paperwork. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and we’ll confirm the paperwork you need with the quote.

Site maintenance staff can often handle a short internal joint. Where it goes wrong is preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.

Mastic packages on Sidlesham Common sites

Sidlesham Common is within about 2 miles of the coast. Coastal exposure means perimeter and cladding joints work harder than on an inland job, so joint design, primers and product choice deserve extra care. Sidlesham Common lies roughly 57 miles out from central London. Construction around the commuter belt mixes station-side flats with refurbished offices and units, so mastic packages have to keep pace with busy programmes.

On a campus such as University of Chichester, 3.6 miles to the north of Sidlesham Common, new teaching buildings and residences are normally built and refurbished around the academic year. For contractors at a college like West Sussex Alternative Provision College, 1.9 miles to the north-east of Sidlesham Common, perimeters and internal sealant are timed for the holidays.

Sidlesham Common is about 3 miles south of Chichester, in West Sussex. Anywhere in PO20, the process is the same: send details, get a fixed quote, we seal, and the work is guaranteed. Across West Sussex, 373 places are covered, Sidlesham Common among them. We also cover Portsmouth, around 12 miles from Sidlesham Common.

Business premises anywhere in PO20 are within our area. If your site is on Chichester Road and Jury Lane or close by, we can quote for facade joints. Close to Sidlesham Common, our area also takes in Street End (1 mile south-east), Sidlesham (1 mile south), Fisher (1 mile east), Keynor Estate (2 miles south) and South Mundham (2 miles east). A short drive away, we cover Bognor Regis (5 miles east), Chichester (3 miles north), Selsey (4 miles south), Littlehampton (12 miles east), Rustington (13 miles east) and Angmering (14 miles east).

Around Sidlesham Common

Locally, jobs take us to sites close to The Blacksmith's Arms Public House and the streets around them. For rail, the closest station is Chichester station, about 2.6 miles north. Well-known places in the area include Chichester Cathedral Treasury (2.9 miles north) and Chichester Castle (3.2 miles north). The countryside around Sidlesham Common includes Nutborne Marshes.

Map of Sidlesham Common © OpenStreetMap contributors

Diagnose, treat, sign off

On arrival, we sign in, go through any site induction and check how permits are handled. Everything around the joints gets protected before any cutting starts, with the work itself normally taking longer on a full elevation than on a handful of window perimeters, and it always depends on dry weather. Smaller jobs around Sidlesham Common can be grouped with others nearby. You’ll have a fixed quote before work starts.

  1. We plan access and the order of elevations with the client.
  2. Weather and temperature are checked against the product’s limits.
  3. We remove the old bead and check the edges are sound.
  4. Faces are cleaned, primed where needed and backed.
  5. Facade-grade sealant goes in and is tooled to a tidy concave profile.
  6. We hand over with our 12-month workmanship guarantee.

What we need from you

  • Make sure the joints can be reached
  • Let building users know which areas are affected
  • Flag any permit to work we’ll need

Ask for a quote

To get a fixed quote, speak to us on 01277 525 020 or email drawings and photos, telling us the site location and the nature of the job. You can also send details through our quote form.

Ask for a quote

Related advice

Why it’s worth doing now in Sidlesham Common

Failed joints let in more than water: draughts around frames add to heating costs and complaints. A new seal closes the gap for both. Around Sidlesham Common, it’s better to renew all the failing joints at once, rather than one at a time. Send photographs of each area and we’ll quote for the lot.

The product called for affects the cost, as does the preparation each joint needs, such as cutting out, priming or new backing rod. Access, phasing and site requirements come into it too.

Why us?

  • CHAS accredited
  • 12-month guarantee on workmanship
  • One number for every site we cover
  • Standard and matched colours in many product ranges

Read our cost guide and how we’re accredited.

Common problems we fix in Sidlesham Common

When the sealant tears down its centre, it has normally been asked to move more than it can. Too thin a bead, too narrow a joint or a product with the wrong movement class are common reasons.

Look out for the following:

  • Gaps between rainscreen or cladding panels
  • Cold air coming in at window perimeters
  • Water coming in around window frames
  • Perimeter sealant that has split or peeled away

Extensions at sites like St Richard's Hospital (3.5 miles north of Sidlesham Common) usually sit beside working departments, and the mastic follows strict access rules.

Questions to ask before you book

  • Their approach to joint depth and backing
  • Proof of insurance
  • Are they CHAS accredited or on Constructionline?
  • The named product and why it was chosen

Our contractor checklist

Aftercare for building managers

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

  • Keep pressure washers away from fresh sealant
  • Check that rainwater leaves the facade the way it was designed to
  • Plan facade sealing alongside redecoration
  • Walk the elevations once or twice a year

If new signage, brackets or services are fixed through a sealed joint, the seal needs making good. Ask the installer to reseal it properly with a compatible product.

In pre-2000 buildings, check the asbestos register before old sealant is cut out. Older sealants can contain asbestos, and if it’s suspected, we stop until it has been tested.

Accreditations

Trusted. Accredited. Insured.