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

Mastic sealant contractors in Balcombe

Commercial sealant work in Balcombe for contractors, FMs and building owners: mastic sealing for building owners, managing agents and housing associations, with a fixed quote first.

  • Damaged joints in communal entrances and corridors
  • Complaints coming in block by block
  • Brittle perimeter mastic across a building
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Signed off, with 12 months’ guarantee.
South East, London & Scotland
CHAS accredited
Fully insured: £5m PL

Need mastic sealing in Balcombe?

Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.

Questions about Balcombe

Is a smaller place like Balcombe outside your area?

No. Places such as Balcombe are covered as much as the big towns. Our area covers London and the South East counties. Good photographs up front let us bring everything on the first visit.

Will you price a mastic programme across our Balcombe portfolio?

Yes. Portfolio-wide programmes are a regular request. Send the addresses and photos and we will give a fixed quote.

Can people stay in the building while you reseal?

The work is planned around occupiers. We agree the programme so you can notify occupiers and communal access is kept open.

How long will the new sealant last?

Nobody can honestly give a figure in years, because life depends on how much the joint moves, how exposed it is and how it’s cleaned and used. Regular checks let you plan resealing before leaks or damage.

Can weather delay the job?

Outside, yes. Sealant needs a dry joint and a temperature within the product’s range, so damp, frosty or very cold days can stop external work. Internal work is rarely affected.

Do you seal on top of existing sealant?

No. Overlaying old sealant is a frequent cause of early failure, so it all comes out first.

Can you send RAMS and CSCS details before starting?

We’re CHAS accredited, a Constructionline member and carry public liability insurance. Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we will confirm with the quote.

Mastic sealing for commercial buildings in Balcombe

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. Resealed mastic joints in Balcombe carry our 12-month guarantee. We work on balcony and threshold joints, communal entrances and stairwells and external wall and movement joints, and what we are called in for most is repeated reactive repairs to the same buildings and failed external movement joints. Whether you call it commercial sealant work, mastic application or joint sealing, the work in Balcombe is the same: failed joints cut out, faces prepared and the right sealant laid to the right depth.

For owners with a single building near Balcombe, we plan to finish in one visit where possible. Send photos of the frames and joints and we’ll give a fixed quote.

What our 12-month guarantee covers is the way we did the job: the preparation, the sealing and the tooling. Damage, later alterations by others and movement beyond what the joint was designed for sit outside it.

The Mastic Doctor team standing beside their branded vans outside an office building
Where
Balcombe (RH17)
Wider area
West Sussex
Guarantee
12 months on our workmanship
Quote
Fixed quote, scope in writing
Call
01277 525 020
Last updated
3 November 2026

Keeping the joints sound

To get the most from the new sealant:

  • Look at the sunniest and most exposed elevations first
  • List the paperwork your organisation requires when you send details
  • Keep bins and bikes away from communal door frames
  • Make mastic part of routine maintenance checks

Where a paintable product was specified, it can be painted after curing. Silicone usually can’t be painted, so keep decorators off it unless told otherwise.

Failed mastic often goes unnoticed until heavy rain finds it. Acting at the first signs keeps it a straightforward reseal and saves internal repairs.

When it isn’t the sealant

Not every problem is a sealant problem, and we are upfront when that’s the case. These need a different solution:

  • Roof leaks, gutters or failed flashings that aren’t sealant joints
  • Asbestos-containing sealant, which we don’t remove
  • Broken glass or failed sealed units

Not sure which it is? You can call the office on 01277 525 020 or email the details over and we will tell you honestly.

Joints and surfaces we work on

  • Communal kitchens and washrooms
  • Shopfronts below residential blocks
  • External wall and movement joints
  • Communal entrances and stairwells
  • Window and door perimeters on blocks
  • Balcony and threshold joints

When to bring in a specialist

Site maintenance staff can often handle a short internal joint. Where it goes wrong is preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.

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

On site: what to expect

Where the site stays busy, we agree a sequence with your contact so the disruption stays in one area at once. Each area is protected, prepared and sealed, then handed back before we move to the next. For work around Balcombe, we aim to finish in one visit, so photos and measurements up front really help. That way the right products come on the day.

  1. Each block or building is walked and the failed joints recorded with the likely cause.
  2. We send a fixed quote that sets out the joints, the products and the programme.
  3. The programme is fixed with you, including dates you can pass on to residents or tenants.
  4. We remove the old mastic completely and clean the joint faces back.
  5. Deep joints get backing rod, faces are primed if the manufacturer specifies it, then the joint is sealed and tooled.
  6. Each building is checked on completion and the work carries our 12-month guarantee.

Preparing the site

  • Share your working hours and any access restrictions
  • Share the asbestos register for older buildings
  • Tell staff and tenants when we will be in

Ask for a quote

If there’s a specification, drawings or a tender package, send it with your enquiry, and we’ll price against exactly what is specified. Smaller jobs need nothing more than photos and a few notes.

Get a quick quote

Read more

Signs you need mastic sealing in Balcombe

Previous repairs often sealed new mastic over old. New sealant won’t grip failed sealant and the repair soon fails.

Most enquiries start with one or more of the following:

  • Brittle perimeter mastic across a building
  • Complaints coming in block by block
  • Damaged joints in communal entrances and corridors
  • Occupiers reporting cold air round windows

If your remit includes a building such as Balcombe CofE Controlled Primary School, frame and door mastic can be programmed for the holidays.

Questions to ask before you book

  • The terms of the workmanship guarantee
  • Their approach to joint depth and backing
  • How they’ll work around occupants
  • Whether their applicators hold CSCS cards

Questions to ask before you appoint anyone

Why act early in Balcombe

Piecemeal repairs over the years often leave mismatched sealant. Resealing a whole building gives a consistent finish and one 12-month guarantee. Older rural buildings around Balcombe move with the seasons, and rigid or tired sealant can’t keep up. The right product, sized to the joint, copes much better.

Small jobs and large programmes are priced from the same things: scope, access, product and programme. Call for a quote and we will put a fixed figure on it.

Why us?

  • Specification-led, product-correct work
  • Workmanship guaranteed for 12 months
  • Old sealant cut out, never sealed over
  • Colours confirmed for the specified product

Take a look at our cost guide and our accreditations and insurance.

Blocks and managed buildings in Balcombe

Balcombe is in the South East, one of the UK’s drier regions. Even so, frame mastic only goes on in dry, workable conditions, and the sunniest, most exposed sides of a building usually need attention first. Central London is about 31 miles from Balcombe. Managed blocks of flats are a big part of commuter-belt property.

For agents with blocks near Balcombe station, less than half a mile west of Balcombe, a block-wide mastic programme deals with frames, balconies and entrances in one go. Churches, halls and community buildings such as The Parish Church of St Mary are looked after by trustees and committees like any other owner, and their frames, doors and external joints need mastic renewed in time.

Balcombe is about 4 miles north of Haywards Heath, in West Sussex. We cover commercial sites throughout Balcombe. Balcombe is one of 373 places in West Sussex on our list for mastic joints. We also cover Brighton, around 15 miles from Balcombe.

Work on mastic joints is covered throughout RH17, for business premises of every kind. Streets here include London Road, Stockcroft Road and Deanland Road, and sites on any of them can send details for a fixed quote. Access to Balcombe is via the B2036. We also cover Balcombe Lane (1 mile north), Brook Street (2 miles south), Staplefield (2 miles south-west), Worth Abbey (3 miles north) and Whitemans Green (3 miles south) for mastic joints. Nearby towns on our patch include Crawley (5 miles north-west), Horsham (8 miles west), Haywards Heath (4 miles south), Burgess Hill (7 miles south), East Grinstead (7 miles north-east) and Broadfield (4 miles north-west).

Local landmarks in Balcombe

Balcombe has its own railway station: Balcombe station. Well-known places in the area include Princess Royal Hospital (4.9 miles south) and Cuckfield Museum (3.5 miles south). Not far away are Blunts Wood and Paiges Meadow and Tilgate Lake.

Map of Balcombe © OpenStreetMap contributors
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