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

Mastic Sealing in Broadfield

Planning work on a mastic joint in Broadfield? We assess it, carry out the work and guarantee our workmanship for 12 months.

  • Complaints coming in block by block
  • Cracked, hardened mastic round windows on a block
  • Leaks at window and door perimeters
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
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
12-month guarantee on our workmanship.
Covering the South East & Scotland
CHAS & Constructionline
Fully insured: £5m PL

Need mastic sealing in Broadfield?

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

Mastic sealing for commercial buildings in Broadfield

Before work starts, most agents and landlords want the documents in order. Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we’ll confirm with the quote. We’re a Constructionline member and CHAS accredited, and we carry public liability insurance. If you’re dealing with communal area joints that look neglected and damp patches beside frames, we can help, on shopfronts below residential blocks, communal entrances and stairwells and balcony and threshold joints alike. A specialist sealant contractor works differently from a general builder: on jobs in Broadfield, preparation and product choice get the time they need.

For landlords and associations with stock in and around Broadfield, grouping buildings into one visit saves travel. Send the addresses and photos and we’ll quote for all of them together.

Guaranteed is the last step of every job. Our workmanship is backed for 12 months, and we explain exactly what that covers when we quote.

Place
Broadfield (RH11, RH10)
Wider area
West Sussex
Guarantee
12 months on our workmanship
Quotes
Fixed quote, scope in writing
Telephone
01277 525 020
Updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

For owners and agents in Broadfield

Rainfall across the South East, Broadfield included, is lower than in many parts of the UK. Even so, frame mastic only goes on in dry, workable conditions, and the sunniest, most exposed sides of a building typically need attention first. There are four care or nursing homes within about 2 miles of Broadfield. Frame mastic on care buildings is best renewed elevation by elevation, with the manager deciding timings.

Older buildings near Broadfield, from historic houses such as Tyes Place (4.4 miles south-east of Broadfield) to more modest stock, need compatible products when frames are resealed. If you look after a block within reach of Crawley station (1.4 miles north-east of Broadfield), frame and balcony mastic can be renewed on one programme.

Broadfield is about 1 mile south-west of Crawley, in West Sussex. Looking for mastic sealing in Broadfield? We can help. Broadfield is one of 373 places we cover in West Sussex for mastic joints. For work in that direction, see our Brighton page.

We take on mastic joints across the RH11 and RH10 postcode area, whatever the building. Buildings on Terry Road, Hobbs Road and Clark Road are within our area for mastic joints. Just outside Broadfield, we also work in Kilnwood Vale (2 miles west), Colgate (2 miles south-west), Faygate (2 miles west), Handcross (3 miles south) and Plummers Plain (4 miles south). A short drive away, we cover Horsham (5 miles west), Haywards Heath (8 miles south-east), Burgess Hill (10 miles south), East Grinstead (9 miles east), Billingshurst (12 miles south-west) and Roffey (4 miles west).

Near you in Broadfield

Locally, jobs take us to sites close to Cottesmore School, Target Hill Park and The New Moon pub and the streets around them. The nearest railway station is Crawley station, about 1.4 miles north-east of the centre. A little further out are Crawley Hospital (1.5 miles north) and Crawley Museum (1.7 miles north-east). The countryside around Broadfield includes Tilgate Lake.

Map of Broadfield © OpenStreetMap contributors

Questions we’re asked in Broadfield

Is Tilgate Forest Business Centre, near Broadfield, within your area?

Yes. Our area takes in Broadfield and its surroundings, with estates and business parks such as Tilgate Forest Business Centre included. Photos and a short description are enough for a first look.

Do you work for managing agents with blocks near Crawley station?

Yes, we work for agents, landlords and housing associations with blocks of every size. Send the address, photographs of the elevations and your access arrangements, and we’ll give a fixed quote.

Is Broadfield in your area?

Yes. Broadfield falls within our area, and you can phone 01277 525 020 or use the quote form to get started.

How many days will you need on site?

That varies with the scale of the job, but the work typically takes a few days for most blocks, with larger programmes scheduled building by building. Larger or phased jobs take longer, and we’ll give you a timescale with the quote.

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 the fixed quote reflects it.

Can you follow the specification on our project?

Yes. The specification and the manufacturer’s installation guidance are what we work to, and we raise anything unclear before work begins.

How soon can the area be used again?

We will confirm how long the chosen product needs to cure.

Why deal with it now?

Mixed repairs by different contractors leave a patchwork of products and colours. A block-wide reseal gives one product, one colour and one guarantee. Over time, UV, weather and movement wear any sealant out. Replacing it before it fails keeps water out.

A quote for mastic joints depends on quantities, condition and access, and any specification that applies. Call for a quote.

Why choose Mastic Doctor in Broadfield

  • Failed material removed, not covered up
  • Work to your specification and the manufacturer’s guidance
  • Colours confirmed for the specified product
  • Health and safety: CHAS accredited

Read our cost guide or our accreditations and insurance.

For managing agents and facilities managers

Blocks and communal areas make up much of the work for housing associations and agents. We phase the work so people keep access, with each stage agreed with your site contact.

CHAS accredited and a Constructionline member, we make supplier vetting simple. We are fully insured, and our insurance certificate can go with the quote.

Different surfaces, different methods

External movement joints

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

Estate-wide resealing programmes

Consistent products and colours across an estate make future maintenance simpler and easier to manage.

Our process

On arrival, we sign in, go through any site induction and check how permits are handled. Everything around the joints gets protected before anything is cut or cleaned, and the work usually takes anything from a day to a few weeks, depending on the number of buildings and joints. If neighbouring businesses or buildings around Broadfield need work too, visits can be combined. Mention the building’s opening times and we will work within them.

  1. First we look at the mastic on each building and note what needs replacing.
  2. A fixed quote follows, split by block or building if that suits you.
  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. Finished joints are looked over and the 12-month guarantee confirmed.

Getting the site ready

  • Share your working hours and any access restrictions
  • For older buildings, check the asbestos register before work
  • Confirm the product named in the specification

Ask for a quote

A handful of photographs and a postcode is the fastest way to a quote. Upload them with the quote form, or give us a call on 01277 525 020 or send photos by email if you’d rather talk the job through.

Ask for a quote

Related advice

After the work

Every sealant joint needs some looking after, and their life depends on movement, exposure, cleaning and use. Our advice:

  • Encourage occupiers to report problems at frames
  • Check sealant joints during planned building inspections
  • Avoid piecemeal callouts where you can
  • Check the asbestos register before any old mastic is disturbed

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

Planned resealing is easier to budget than emergency repairs. We can quote buildings in priority order so spending is spread.

Common problems we fix in Broadfield

Previous repairs often sealed new mastic over old. New silicone has nothing to grip on old silicone, so these repairs rarely last.

Most enquiries start with something like this:

  • Old repairs sealed over failed mastic
  • Occupiers reporting cold air round windows
  • Window mastic that has split and shrunk
  • Leaks at window and door perimeters

Churches, halls and community buildings such as Christ The Lord are looked after by trustees and committees like any other owner, and their frames, doors and external joints need mastic renewed in time.

Questions to ask before you book

  • How long is the guarantee, and what does it include?
  • Their plan for phasing and protecting the area
  • How the joint faces will be prepared and primed
  • Whether old or failed sealant will be cut out, not overlaid

Choosing a commercial sealant contractor

Accreditations

Trusted. Accredited. Insured.