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

Mastic sealing for building owners and managing agents in Fernhill, West Sussex

Mastic sealing for Fernhill, from a contractor working since 2005. Fully insured and CHAS accredited.

  • Damaged joints in communal entrances and corridors
  • Open joints in brickwork or panels
  • Patchy repairs in mismatched sealant
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
Our workmanship is guaranteed for 12 months.
Covering the South East & Scotland
CHAS & Constructionline
Fully insured: £5m PL

Mastic sealing for businesses in Fernhill

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

How we handle mastic sealing in Fernhill

Blocks are lived in, so access and disruption have to be thought through. Dates, areas and the order of work are agreed with you in advance so you can let residents know what is happening. Communal entrances and stairs stay usable throughout. We work on window and door perimeters on blocks, balcony and threshold joints and external wall and movement joints, and what we are called in for most is mastic failing across several blocks on an estate and no planned programme for sealant. Whether you call it commercial sealant work, mastic application or joint sealing, the work in Fernhill 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 Fernhill, we plan to finish in one visit where possible. Send photos of the frames and joints and we will give a fixed quote.

Every job is signed off with a 12-month guarantee. The promise is simple: if our work fails within that year, we put it right.

Location
Fernhill (RH6)
Region
West Sussex
Cover
12 months on every job
Price
Fixed quote, scope in writing
Call
01277 525 020
Updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

Fernhill: questions and answers

Is Maple Business Park, near Fernhill, within your area?

Yes. Estates, retail parks and business parks around Fernhill, Maple Business Park among them, are all within reach. To start, just phone 01277 525 020 or email drawings and photos with the unit, the joints involved and your access times.

Can you quote for a block close to Gatwick Airport station?

Yes, we work for agents, landlords and housing associations with blocks of every size. We work to your notice and access arrangements.

What if the old mastic contains asbestos?

We don’t remove asbestos-containing materials. If old sealant is suspected, work stops until it’s tested, and the duty to manage asbestos sits with the dutyholder.

When is resealing likely to be due?

Nobody can honestly give a figure in years, since movement, weather, cleaning and use all affect it. Regular inspection is the best way to catch problems early.

Do you cover Fernhill?

Yes. Sites across Fernhill are covered, with one number for every area we cover.

Will you just go over the old sealant?

No. We cut the old material out and clean the joint back before sealing, because fresh silicone will not bond with aged silicone.

How soon can the area be used again?

That comes down to the sealant and the temperature. Some products skin over quickly but need longer to cure fully, and we confirm it before leaving site.

Why deal with it now?

Failed perimeter mastic lets cold air in around frames and the windows normally get the blame. Resealing the perimeters is often the simpler fix where the frames themselves are sound. Older rural buildings around Fernhill 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.

The price depends on how many linear metres there are, how much old material needs removing and the access. Call for a fixed quote once you have the details.

Why choose Mastic Doctor in Fernhill

  • One contact handling all your sites
  • Fully insured, including public liability cover
  • Constructionline member for supplier checks
  • Commercial sealant work since 2005

Take a look at our cost guide or how we’re accredited.

What we can’t put right

A few problems need another trade or a different fix, and we say so rather than covering them up:

  • Leaks through the frame itself rather than the perimeter
  • Leaks from above rather than through a joint
  • Glazing that needs replacing

If you are not sure, just ring 01277 525 020 or send photos by email and we will give you a straight answer before you book.

Where we work in Fernhill

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

For managing agents and facilities managers

As a CHAS accredited contractor and Constructionline member, we’re straightforward to vet for your supplier list. We’re fully insured, and our insurance certificate can go with the quote.

Building owners and managing agents use us on everything from one building to a spread of sites. One quote can cover more than one site, which keeps the paperwork simple.

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.

Some joints are best left to specialists: for example fire-rated seals that must match a tested detail, trafficked floor joints and external movement joints. Getting these wrong normally costs more in the end than doing them right.

From enquiry to sign-off

In a busy building, we agree a sequence with your contact so the disruption stays in one area at once. Each area is protected, prepared and sealed, then reopened once the sealant allows before the next one starts. If others near Fernhill need work, visits can be combined. A fixed quote is given before anything starts.

  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 sequence and the dates are fixed with you, giving you what you need to notify occupiers.
  4. We remove the old mastic completely and clean the joint faces back.
  5. Backing rod and primer go in where the joint and the product need them, then new sealant is applied and tooled.
  6. Completed joints are inspected and carry a 12-month workmanship guarantee.

Before we start on site

  • Tell us what induction or permit system the site runs
  • Tell staff and tenants when we’ll be in
  • Point out any areas we must not close

Ask for a quote

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

Get a price

Advice

What affects the price in Fernhill

The price varies from site to site. It mainly depends on:

  • Site requirements such as inductions and permits
  • The product specified
  • Removal of failed or old sealant
  • Backing rod, priming and other preparation

Quantities, awkward access and phased working all shape the price. So do site requirements such as inductions and permits.

Details that help us quote

There’s no need for a formal survey. These details are enough to start:

  • The asbestos register, for older buildings
  • Approximate linear metres or a joint schedule
  • When you need the work done
  • Where the site is, with the postcode

The quickest route to a quote is a few photos and the site postcode. Send them through the quote form, or call the office on 01277 525 020 or email us to discuss it first.

For owners and agents in Fernhill

Central London is about 24 miles from Fernhill. Commuter-belt towns tend to have plenty of managed blocks near stations and town centres, and window and balcony mastic on them tends to age at the same rate. The 2 miles around Fernhill include four care or nursing homes. Owners of care premises can bring window and door mastic into a phased programme planned around the home.

Trustees of buildings like Church of St Bartholomew can bring frame and external mastic into a planned maintenance list. For owners of several units at places like Maple Business Park (less than half a mile east of Fernhill), one programme can deal with frame and external mastic across the lot. Blocks of flats and mixed-use buildings often cluster around stations such as Gatwick Airport station, 1 mile to the west of Fernhill, and their window and balcony mastic tends to age at the same rate across a building.

Fernhill is about 2 miles south-east of Horley, in West Sussex. We send applicators to Fernhill for mastic joints, handled exactly as we handle every other area. 373 places across West Sussex fall within our area, Fernhill among them. There’s a separate page for Brighton, roughly 22 miles from Fernhill.

Anyone looking for mastic sealing in RH6 gets the same process as the rest of our area: details, then a fixed price, then sealing and a 12-month guarantee. If your site is on Peeks Brook Lane and Donkey Lane or close by, send details and we’ll quote for mastic joints. We also cover Burstow (1 mile east), Shipley Bridge (1 mile south), Tinsley Green (1 mile south-west), Keeper's Corner (1 mile east) and Copthorne (1 mile south) for mastic joints. A short drive away, we cover Crawley (4 miles south-west), Horsham (10 miles south-west), Haywards Heath (11 miles south), Burgess Hill (14 miles south), East Grinstead (6 miles east) and Broadfield (5 miles south-west).

What’s near Fernhill

Around Fernhill, our work takes us to commercial buildings near The Shipley Bridge pub, among other places. The nearest railway station is Gatwick Airport station, roughly 1 mile west of the centre. Other landmarks nearby include Effingham Park Motor Museum (2.3 miles south-east) and Langley Green Hospital (2.9 miles south-west). Open spaces near Fernhill include Hedgecourt Lake.

Map of Fernhill © OpenStreetMap contributors
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