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

Rackham construction mastic

Mastic packages for new-build and refurbishment projects in Rackham and across West Sussex. CHAS accredited and fully insured, with a 12-month guarantee.

  • Old sealant on a refurbishment that needs stripping before new work
  • Missed perimeter joints on a new elevation
  • Mastic snags holding up handover
1
Send details
Send the specification, photos or a marked-up plan.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
12-month guarantee on our workmanship.
Covering the South East & Scotland
Constructionline member
£5m public liability

Construction mastic for businesses in Rackham

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

Owners, agents and contractors

Whether you’re a managing agent, a property factor or an owner’s representative: send details, get a fixed quote, we seal, guaranteed. Keys, access and contacts can be agreed in advance.

When you manage a building on behalf of an owner, 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.

Construction mastic in Rackham, done properly

The programme rarely stands still, so the mastic package has to flex with it. The sequence is set with the site team and updated as plots or floors are handed over. That keeps the work right first time and saves rework. The enquiries we see most involve bath and shower joints scraped during the final clean and old sealant on a refurbishment that needs stripping before new work, across internal decorators’ caulk, floor and skirting junctions and brick and block movement joints. A specialist sealant contractor works differently from a general builder: in Rackham, that means joint design, primers and backing rod as standard.

For a site near Rackham, the mastic visit is planned so the right sealants, primers and backing rod are on hand, timed to the stage the job has reached. Send drawings or photographs and the programme and we’ll quote to suit.

Building owners and contractors get the same cover: a 12-month guarantee on our workmanship. It doesn’t extend to damage, faults in the building or work by others, and we are upfront about that.

Mastic Doctor team members lined up next to their branded vans outside an office building
Location
Rackham (RH20)
Wider area
West Sussex
Guarantee
12 months on our workmanship
Price
Fixed quote, scope in writing
Telephone
01277 525 020
Last updated
3 November 2026

Your questions answered

Do you cover business parks and estates near Rackham, such as Quell Farm Industrial Estate?

Yes. We cover Rackham and the area around it, including industrial estates, business parks and retail parks such as Quell Farm Industrial Estate. A few photos and the unit address let us price the work.

Is hospital work, at somewhere like Arundel and District Hospital, something you do?

Yes, provided the work is planned with the site’s estates team. Before anything starts, the estates team agrees permits, inductions and infection-control measures with us.

How long before the joints can be used?

The product and site conditions decide that. Some products skin over quickly but need longer to cure fully, and we confirm it before leaving site.

Are you insured?

Yes. Our insurance certificate can be sent alongside the quote.

Is the mastic package guaranteed?

It carries a 12-month guarantee on our workmanship. We’re also fully insured for public liability.

Do you use the sealant named in the specification?

We use the product the specification names. Any suggested alternative is put to you before anything changes.

Can you fit around our programme?

We work to your programme. Tell us the sequence and we’ll plan applicators around it so sealing follows the trades.

Different surfaces, different methods

Window and door perimeters

A frame gap that’s too wide can’t just be filled with sealant. Gaps outside the product’s range are raised with the site team.

Bathrooms, en suites and washrooms

In bathrooms and washrooms, an anti-mould sanitary silicone goes around every fitting. Joints are cleaned, sealed and tooled neatly and baths are loaded where appropriate before sealing.

What we are called out for in Rackham

A joint without backing rod or bond-breaker often fails early. Bonded to the base of the joint and both sides, sealant can’t stretch evenly.

What tends to prompt an enquiry:

  • Different trades sealing to different standards
  • Caulk cracking where joints are moving more than expected
  • New external sealant already peeling away
  • Mastic snags holding up handover

For contractors refurbishing units at places like Quell Farm Industrial Estate, which lies north-west of Rackham, the mastic covers cladding panels, roller-door and window perimeters.

Before you book anyone

  • Is the sealant right for the movement and the substrate?
  • Their pre-qualification and accreditations
  • Do they follow the manufacturer’s priming guidance?
  • Whether old or failed sealant will be cut out, not overlaid

Our contractor checklist

Our process

Before any cutting starts, the area is protected: tape along each joint edge and covers over finishes, stock and equipment close by. On site, the work normally takes a few days on a modest refurbishment and longer on multi-plot or multi-storey schemes, and our waste is bagged and taken away as we go. Rural sites near Rackham may need directions, gate codes or a contact on site. Send that with the details and we will confirm the plan with the quote.

  1. We start with the drawings, specification and programme.
  2. We take off quantities and return a fixed quote.
  3. The sequence is agreed with the site manager.
  4. Each area is sealed when it’s released.
  5. Joints are prepared, backed and sealed to the specification.
  6. Snags are cleared and the package signed off with our 12-month guarantee.

Before we start on site

  • Send any specification or drawings in advance
  • Explain the parking and delivery arrangements
  • Warn occupants and staff about the work

Quotes

Pricing a project or setting a maintenance budget? We will quote against your scope and drawings you can plan around. If you have questions first, ring 01277 525 020 or email a schedule or drawings.

Get a quick quote

Read more

Building and refurbishing in Rackham

The South East is one of the drier parts of the UK. Even so, frost and condensation on steel and glass are common on winter mornings, so we time external mastic for dry faces and agree it with the site team. Rackham lies roughly 44 miles out from central London. Building activity in the commuter belt runs from new flats near stations to business park refurbishments, which keeps mastic packages in demand.

Extensions at sites like Arundel and District Hospital, 4.8 miles south-west of Rackham, usually sit beside working departments, and the mastic follows strict access rules. Older buildings in the area around Rackham, such as Parham House (0.7 miles north-east of Rackham), need care when sealed: the product has to suit soft or historic materials.

Rackham is about 7 miles north of Littlehampton, in West Sussex. Looking for construction mastic in Rackham? We can help. We work across 373 places in West Sussex, from busy centres to rural villages. Brighton is covered too, some 17 miles away.

Postcode districts covered here: RH20. Nearby places we also cover include Cross Gate (1 mile west), Amberley (1 mile west), Coldwaltham (2 miles north-west), Bury (2 miles west) and Hardham (3 miles north) for mastic packages. A short drive away, we cover Horsham (13 miles north-east), Worthing (8 miles south-east), Bognor Regis (12 miles south-west), Chichester (13 miles south-west), Littlehampton (7 miles south) and Shoreham-by-Sea (12 miles south-east).

Around Rackham

Around Rackham, our work takes us to commercial buildings near Parham Park. The closest station to Rackham is Amberley station, roughly 1.9 miles south-west of the centre. Nearby you will also find Arundel and District Hospital (4.8 miles south-west) and Amberley Museum (1.8 miles south-west). Open spaces near Rackham include Bignor Hill and Amberley Wildbrooks RSPB Reserve.

Map of Rackham © OpenStreetMap contributors

What we can’t put right

A few problems need another trade or a different fix, and we point that out rather than sealing over them:

  • Rework caused by others damaging completed areas
  • Joint design decisions that belong to the architect or engineer
  • Frame gaps too wide for sealant, which the installer needs to correct

If you’re not sure, just give us a call on 01277 525 020 or email drawings and photos and we’ll give you a straight answer before you book.

Surfaces we seal

  • Brick and block movement joints
  • Internal decorators’ caulk
  • Window and door perimeters
  • Cladding and panel joints
  • Floor and skirting junctions
  • Sanitary and kitchen joints

Looking after the joints

Problems stay small when the joints are checked regularly. In particular:

  • Plan external elevations with the weather in mind
  • Record the products used in the O&M file
  • Brief the final clean team to avoid blades near sealant
  • Release areas for mastic once other trades have finished in them

Expect some settlement in the first months. Flexible sealants in the right joints handle normal movement while rigid fillers and caulk can crack where movement is larger. We can advise if a joint needs a different product.

Frames with gaps too wide for sealant need sorting before the mastic goes on. Filling a wide gap with sealant alone sets up a failure. We raise them during our first walk of the area.

Accreditations

Trusted. Accredited. Insured.