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

Facade and window perimeter sealing in Brook Street, West Sussex

Facade joint and window perimeter sealing on commercial buildings throughout Brook Street and nearby, carried out by CSCS-carded applicators. CHAS accredited and fully insured.

  • Cold air coming in at window perimeters
  • Damp patches beside frames after rain
  • Gaps between rainscreen or cladding panels
1
Send details
Drawings, photos, a joint schedule or a site visit.
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.
Covering the South East & Scotland
CHAS accredited
£5m public liability

Facade sealing across Brook Street

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

Facade sealing for commercial buildings in Brook Street

A good facade joint depends on design as much as product. The width has to suit the expected movement and the sealant’s movement capability, while rod fixes the depth and stops the bead sticking to the rear, often at around 2:1 width to depth, as the manufacturer advises. The enquiries we see most involve facade joints cracked through the middle and old perimeter mastic that has dried out, on coping and flashing joints, stone and brick facade joints and window and door perimeters. Facilities teams, main contractors and managing agents in Brook Street tend to want the same three things: a fixed quote, no surprises on site and a 12-month guarantee behind the result.

Sites around smaller places like Brook Street can be a fair drive from suppliers, so we come with everything the package needs, timed to the stage the job has reached. Send drawings or photographs and the programme and we will quote to suit.

Every job ends the same way: guaranteed. Our workmanship is backed for 12 months, and the quote explains what it covers.

Location
Brook Street (RH17)
Wider area
West Sussex
Cover
12 months on every job
Quote
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

New build and refits around Brook Street

A number of hotels sit less than 2 miles from Brook Street. Hotel refurbishments often run to tight programmes between busy periods, and perimeter and sanitary sealant has to keep up. Brook Street is about 33 miles from central London. Towns within reach of London tend to keep building, from flats to offices and schools, and each scheme needs its mastic sealed to programme.

For a contractor at a hotel such as Ockenden Manor Hotel & Spa, 1.2 miles to the south of Brook Street, the mastic often has to be finished before a reopening date. Extensions at sites like St Francis Hospital (to the south-east of Brook Street) usually sit beside working departments, and the mastic follows strict access rules. School extensions, at buildings such as Holy Trinity Church of England Primary School, usually run to the summer holidays, mastic included.

Brook Street is about 3 miles north-west of Haywards Heath, in West Sussex. Any commercial site in Brook Street is covered, for single jobs and planned programmes alike. Across West Sussex, 373 places are covered, including Brook Street. Sites around Brighton have their own page, about 13 miles away.

Commercial sites across RH17 are covered for facade joints. Close to Brook Street, our area also takes in Whitemans Green (1 mile south), Cuckfield (1 mile south), Slough Green (1 mile west), Staplefield (2 miles north-west) and Balcombe (2 miles north). Bigger towns within reach include Crawley (6 miles north), Horsham (8 miles west), Haywards Heath (3 miles south-east), Burgess Hill (5 miles south), East Grinstead (9 miles north-east) and Shoreham-by-Sea (14 miles south-west).

Local landmarks in Brook Street

We work on buildings around Warden Park School and Warden Park School and the streets around them. Brook Street’s nearest station is Haywards Heath station, roughly 2 miles south-east of the centre. A little further out are Cuckfield Museum (1.2 miles south) and Waterbury Castle (4.6 miles east). Not far away are Blunts Wood and Paiges Meadow.

Map of Brook Street © OpenStreetMap contributors

Our process

Diagnose, treat, sign off: every visit follows that pattern. First comes an inspection and agreement on scope, then the work is carried out to the specified product and detail, and the job ends with a walk round and sign-off. Jobs in and around smaller places like Brook Street are usually planned as a single visit, so photos and measurements up front really help. Then the right materials arrive with us.

  1. Photos, drawings or a visit tell us about the joints and the access.
  2. Product choice follows the joint’s movement and substrate.
  3. The existing bead comes out in full.
  4. Primer goes on where the product data asks for it.
  5. Rod goes in to fix the depth, then the joint is sealed and tooled.
  6. The finished joints are checked with you.

Getting the site ready

  • Clear stock, furniture or equipment away from the joints
  • Explain the parking and delivery arrangements
  • Flag any permit to work we’ll need

Request a quote

A handful of photos and a postcode is the fastest way to a quote. Send them through the quote form, or call the office on 01277 525 020 or send photos by email to discuss it first.

Ask for a quote

Related advice

Aftercare for building managers

A few simple habits keep the new joints working:

  • Ask about asbestos in pre-2000 mastic
  • Add perimeter sealant to planned maintenance checks
  • Insist on a full cut-out when joints are renewed
  • Share access with other external trades

Hold back any cleaning crew until the joints have had their stated cure time. Pressure washers and harsh cleaners can damage a fresh bead.

Tie resealing in with redecoration, cladding repairs or other access. One set-up for several trades saves money and limits disruption.

Owners, agents and contractors

Whether you are a managing agent, a property factor or an owner’s representative: send the details, accept a fixed quote, and we carry out and guarantee the work. Keys, access and contacts can be agreed in advance.

If you look after buildings for someone else, clear figures and clear communication matter. We quote a fixed sum, confirm the scope and walk the finished work with you or your representative, plus a 12-month guarantee.

What the job involves on each surface

Window and door perimeters

Frame-to-wall joints at windows and doors are the facade joints we reseal most. A low-modulus, neutral-cure product suits most frame-to-wall joints finished to throw water off the joint.

Coping and flashing joints

Where the specification calls for sealant at copings or flashings, we can seal them. These joints take full exposure to weather and need a durable external sealant.

Site staff or a sealant specialist?

General builders and handymen seal joints, but it isn’t their main trade. A specialist prepares properly, controls joint depth and picks a product with the right movement class, which is what makes a joint last.

Paperwork matters too. Many sites expect CSCS cards, RAMS and proof of insurance, and we’ll confirm the paperwork you need with the quote.

When it isn’t the sealant

Some faults sit outside our scope, and we say so rather than covering them up:

  • Cracked or spalling substrates that need repair before sealing
  • Damp caused by condensation inside the building
  • Joints too narrow for the movement they take, which need redesign

If in doubt, call the office on 01277 525 020 or email us and we will say what we think.

Surfaces we seal

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

Your questions answered

Is hospital work, at somewhere like St Francis Hospital, something you do?

Yes, hospitals are one of the sectors we cover. Before anything starts, the estates team agrees permits, inductions and infection-control measures with us.

Is Brook Street too far out for you?

Not at all. Brook Street is within our area. We cover Greater London and the counties of the South East. Send photos and a list of what needs doing, and we’ll plan the job to need as few trips as possible.

Do you install glazing systems?

No. A glazing contractor handles that. We reseal window perimeters, panel joints and frame-to-structure perimeters.

Can you work while the building is occupied?

Yes, with some planning. Tell us your site hours and access windows and we will plan around them.

What hours do you work?

We’re in the office from 8am until 5pm, Monday to Friday. Tell us your site hours and access windows and the work will be fitted around them.

What’s the quickest route to a quote?

It works in four steps: send details, get a quote, we seal, guaranteed. Step one needs little more than photographs and a postcode.

Can you look at water coming in around a frame?

Yes. We check the sealant joints and report what we find before quoting. Where the cause seems to be elsewhere, we’d rather tell you than reseal pointlessly.

Accreditations

Trusted. Accredited. Insured.