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

Three Bridges mastic sealing

We carry out mastic sealing for building owners, managing agents and housing associations in Three Bridges and the surrounding area. Send photographs or drawings for a fixed quote.

  • Open joints in brickwork or panels
  • Complaints coming in block by block
  • Cracked, hardened mastic round windows on a block
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
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
Signed off, with 12 months’ guarantee.
Covering the South East & Scotland
Constructionline member
£5m public liability

Mastic sealing in Three Bridges

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 Three Bridges

On a residential block, the work happens around people’s lives. Dates, areas and the order of work are agreed with you in advance so you can let residents know what is happening. Entrances and stairwells are kept in use throughout. We work on communal kitchens and washrooms, window and door perimeters on blocks and shopfronts below residential blocks, and the usual reasons a site gets in touch are mastic failing across several blocks on an estate and communal area joints that look neglected. A single leaking joint is often how a building in Three Bridges 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.

Places the size of Three Bridges normally have some housing association stock, small blocks and mixed-use buildings. Their window perimeters and external joints need renewing as the mastic ages.

We stand by our work with a 12-month guarantee. It covers how we prepared and applied the sealant.

The Mastic Doctor team standing beside their branded vans outside an office building
Where
Three Bridges (RH10)
Region
West Sussex
Cover
A 12-month guarantee
Quotes
Fixed quote, scope in writing
Telephone
01277 525 020
Updated
3 November 2026

Why act early in Three Bridges

Open external joints let water into walls and around frames. Damp patches, stained plaster and decorating claims can follow and those cost far more to put right. For buildings in places like Three Bridges, one well-planned visit beats several small ones, so it’s worth dealing with every failing joint at once.

The work involved drives the cost: removing old material, preparing the joints, the product, the access and how the work is phased. Call for a quote and we’ll explain how it’s made up.

Why us?

  • One contact handling all your sites
  • Colour options checked against the specified product
  • Health and safety: CHAS accredited
  • Sealing commercial buildings since 2005

See our cost guide or how we’re accredited.

After the work

For the best life from the joints:

  • Reduce knocks to communal area joints
  • Start inspections with the most exposed faces
  • Log resealing dates block by block
  • Group repairs into a planned programme

Protect entrance and corridor joints from knocks where possible. Damage at low level is the most common reason communal joints fail early.

Leaks at window perimeters spoil finishes and can affect frames. Resealing early keeps the job small.

What the job involves on each surface

External movement joints

External movement joints take up expansion and contraction. Once that sealant goes, rain can reach the wall.

Planned maintenance

Resealing can be scheduled alongside other planned works on a timetable you set.

Quoting for work in Three Bridges

Quotes vary with the job. Expect it to depend on:

  • Quantities, in metres or numbers
  • Removal of failed or old sealant
  • Induction, permit and paperwork requirements
  • Working within restricted access windows

The price depends on how many linear metres there are, what has to come out first and how the joints are reached. Call for a quote once you have the details.

Details that help us quote

Good information means a firmer quote. When you get in touch, include:

  • Your programme or deadline
  • Whether the building will be occupied during the work
  • How the joints are reached, and at what height
  • Approximate linear metres or a joint schedule

Pricing a project or setting a maintenance budget? Send the scope and any drawings, and we will return a fixed quote you can plan around. If you have questions first, call 01277 525 020 or email drawings and photos.

Commercial clients in Three Bridges

Main contractors use us as their sealant subcontractor on new-build and refurbishment projects. We work to your programme, your specification and your site rules, with CSCS-carded applicators on site.

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. We can agree access arrangements and keyholder contacts beforehand.

On site: what to expect

On arrival, we report to your site contact and complete whatever induction the building runs. Floors, finishes and fittings next to the joints are covered before anything is cut or cleaned, with the work itself usually taking anything from a day to a few weeks, depending on the number of buildings and joints. What matters most for a job in Three Bridges is a clear list of what needs doing, so send photographs of each area. A fixed quote follows.

  1. We inspect each building and record the joints that have failed.
  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. Joints are resealed and tooled.
  6. We check the finished work and confirm the guarantee.

Getting the site ready

  • Explain the parking and delivery arrangements
  • Let us know about inductions and permits
  • Warn occupants and staff about the work

Quotes

Every quote starts with the facts: what’s there, how much of it, how we reach it and what’s specified. Send what you have, and we will arrange a site visit if anything is unclear.

Get a price

Advice

Frames, entrances and external joints in Three Bridges

The 2 miles around Three Bridges include three care or nursing homes. For owners and operators of care buildings, window perimeters and external joints are best renewed in planned phases around residents. Three Bridges is about 27 miles from central London. Within reach of London, blocks run by agents and associations are common around stations; their frame mastic often ages block-wide.

If you own or manage units on a site such as Worth Corner Business Centre, 0.6 miles east of Three Bridges, failed mastic on frames, door surrounds and external joints can be dealt with unit by unit. Historic properties like Gravetye Manor (4.9 miles south-east of Three Bridges) show the age of some local stock, where frame mastic must suit soft brick or stone. If you look after a block within reach of Three Bridges station, less than half a mile north of Three Bridges, frame and balcony mastic can be renewed on one programme.

Three Bridges is about 1 mile east of Crawley, in West Sussex. Across the RH10 postcode area, the process is the same: details in, fixed quote out, then sealing and a 12-month guarantee. Across West Sussex, 373 places are covered, Three Bridges among them. There’s a separate page for Brighton, about 20 miles away.

We cover the RH10 postcode districts for mastic joints. Streets here include Ash Road, Mill Road and North Road, and sites on any of them can send details for a fixed quote. Sites close to Three Bridges are covered too, including Pound Hill (1 mile north-east), Worth (1 mile south-east), Maidenbower (1 mile south-east), Tilgate (1 mile south-west) and Crawley (1 mile west). A short drive away, we cover Horsham (8 miles south-west), Haywards Heath (9 miles south), Burgess Hill (11 miles south), East Grinstead (7 miles east), Billingshurst (14 miles south-west) and Bewbush (3 miles west).

Near you in Three Bridges

We work on buildings around Hazelwick School, Central Sussex College and Grattons Park and the streets around them. Three Bridges has its own railway station: Three Bridges station. Nearby you’ll also find Crawley Hospital (1.6 miles west) and Crawley Museum (1.2 miles west). Green spaces nearby include Tilgate Lake.

Map of Three Bridges © OpenStreetMap contributors

Common questions from Three Bridges clients

Does your area include sites such as Worth Corner Business Centre, near Three Bridges?

Yes, sites like Worth Corner Business Centre are within our area, along with the rest of Three Bridges. Photos and a short description are enough for a first look.

Is a smaller place like Three Bridges outside your area?

Not at all. Three Bridges is within our area. Our area covers London and the South East counties. We plan jobs in smaller places so return trips are kept to a minimum.

Can you seal joints high up on a block?

Every block is different. How upper joints are reached is agreed before work is booked so there are no surprises.

How do you handle work on occupied blocks?

The work is planned around occupiers. We agree the programme so you can notify occupiers, and entrances stay in use.

Do you supply RAMS and insurance details?

Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we will confirm with the quote. We hold CHAS accreditation and Constructionline membership.

Which sealant will you use?

The specification comes first, if there is one. Without one, the joint decides: how much it moves, what it bonds to and whether it’s wet, trafficked or fire-rated.

How do I request a quote?

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

Accreditations

Trusted. Accredited. Insured.