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

Coloured and colour-matched sealant in Keynor Estate, West Sussex

Coloured and colour-matched sealant for visible joints in Keynor Estate and across West Sussex. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.

  • Failed coloured sealant that has split or peeled
  • Marked sealant in hotel bathrooms
  • Fit-outs with a sealant colour in the specification
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
12-month guarantee on our workmanship.
Covering the South East & Scotland
Constructionline member
£5m PL insurance

Coloured sealant for businesses in Keynor Estate

Photos, a specification or a quick description of the joints is enough to start a fixed quote.

When something else is needed

Not every problem is a sealant problem, and we’d rather tell you before you spend money. It won’t fix:

  • Exact bespoke colour matches beyond the product’s range
  • Finishes that change colour from one area to another
  • Restoring stained stone or masonry next to old sealant

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

Surfaces we seal

  • Hotel bathrooms and public areas
  • Natural stone and brick
  • Office fit-out finishes
  • Cladding panels
  • Shop-fit joinery and counters
  • Powder-coated and anodised frames

How we handle coloured sealant in Keynor Estate

Colour is often written into the specification, by RAL reference or by matching a sample. Standard sealant ranges cover many colours, so we check what the specified product is made in before we quote. An exact bespoke match can’t always be promised, so we talk you through the nearest colours. If you’re dealing with a bead that fights the cladding or frame colour and dirty, discoloured joints in public areas, we can put it right. A specialist sealant contractor works differently from a general builder: in Keynor Estate, that means joint design, primers and backing rod as standard.

A job in a smaller place like Keynor Estate is usually a single building. We’ll want a full list and photographs first, so the right products come on the day and nothing waits for a second trip.

Every job is signed off with a 12-month guarantee. The promise is simple: if the work we did fails within twelve months, we return to fix it.

Location
Keynor Estate (PO20)
Wider area
West Sussex
Guarantee
A 12-month guarantee
Price
Quoted before any work starts
Telephone
01277 525 020
Last updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

Our process

We begin with a short walk round with whoever looks after the building, to confirm the scope, the order of work and any areas we must keep clear. After that, any old or failed material is removed, each joint is prepared and the new sealant goes in. For a building around Keynor Estate, tell us how to find it and who will meet us. Add it to your enquiry and we’ll build it into the plan.

  1. We confirm the product the joint needs before talking about colour.
  2. We compare your RAL reference or sample with the colours made for that sealant.
  3. A short trial length can be approved before the full run on visible work.
  4. We take out the existing bead, clean the joints and fit backing.
  5. The coloured sealant is applied and tooled with clean, masked edges.

Preparing the site

  • Point out parking and an unloading spot
  • Let us know about inductions and permits
  • Have the specification and drawings to hand

Ask for a quote

Tell us about the building, the joints and when you need the work done, and we’ll put a fixed quote together. The easiest way is to call the office on 01277 525 020 or send photos by email.

Get a price

Related advice

Questions we’re asked in Keynor Estate

Does the sea air around Keynor Estate change the choice of sealant?

It can. Wind-driven rain and, closer to the shore, salt air are harder on external joints. We check the specified product suits the exposure and pay close attention to preparation.

Can you work at a site such as Enborne Business Park, by Keynor Estate?

Yes. Our area takes in Keynor Estate and its surroundings, with estates and business parks such as Enborne Business Park included. A few photographs and the unit address let us price the work.

Do you use coloured sanitary silicone?

Yes. Sanitary silicones with anti-mould additives come in a range of colours too. We check the colour range of the sanitary product specified and agree it with you.

How long does a typical visit take?

The duration is planned around your programme and the access we are given. You’ll have an expected duration with the quote.

Which sealant will you use?

The specification comes first, if there is one. Without one, the joint decides: its movement, its surfaces and what it has to cope with.

Does weather matter for sealant work?

It can, when the joints are outside. Wet joints and cold, damp or frosty conditions stop the sealant bonding properly, so external work may be moved if conditions aren’t right. Indoors, the weather is rarely a problem.

Can you guarantee a perfect colour match?

No. An exact bespoke match isn’t something we can promise. We will show you the closest colours in the specified product’s range.

Quoting for work in Keynor Estate

We price every job individually. The main factors are:

  • Access and working height
  • Site requirements such as inductions and permits
  • Whether old sealant has to be cut out first
  • The total length or number of joints

Cost follows what’s involved: stripping out, preparation, sealing, access and phasing. Call for a fixed quote and we will explain how it’s made up.

Before you send an enquiry

It doesn’t need to be a full survey. These details are enough to start:

  • Rough lengths or quantities, or drawings if you have them
  • A wide shot and a close-up of the area
  • Any specification or named product
  • When you need the work done

The quickest route to a quote is a few photographs and the site postcode. Upload them with the quote form, or phone 01277 525 020 or email us to discuss it first.

What we’re called out for in Keynor Estate

Sometimes the wrong colour went in at the start, or a substitute product was used. The joint may work perfectly but look out of place, and a client or designer asks for it to be redone.

It’s worth sending us details if you spot any of the following:

  • Dirty, discoloured joints in public areas
  • Discoloured joints on a visible elevation
  • Coloured joints that have cracked with movement
  • Poorly tooled joints on visible finishes

Parks like Enborne Business Park (to the south-east of Keynor Estate) see tenants come and go, and every move-in brings joints to seal.

What your quote should include

  • Is the sealant right for the movement and the substrate?
  • How long is the guarantee, and what does it include?
  • How they’ll work around occupants
  • Are they CHAS accredited or on Constructionline?

Our contractor checklist

General trades versus a specialist

General builders and handymen seal joints, but it isn’t their main trade. A specialist brings correct preparation, depth control with backing rod and a product suited to that particular joint, which is what makes a joint last.

Certain joints really need a specialist: fire-rated seals that must follow a tested detail, trafficked floor joints and external movement joints among them. Getting these wrong usually costs more in the end than doing them right.

Coloured sealant around Keynor Estate: how the place shapes the job

Keynor Estate is within about 1 mile of the coast. Shopfronts, frames and external joints on commercial buildings there take wind-driven rain and, closer to the shore, salt in the air. Sea-facing elevations are typically where failed joints show first. At about 59 miles from central London, Keynor Estate is within reach of the capital. Business parks and retail centres are common around the capital’s motorway corridors. If you have premises across the region, one contractor can cover them all.

Offices and shops close to stations such as Chichester station (4.4 miles north of Keynor Estate) tend to be busy all day, so sealant work is planned around opening hours. If you have premises on more than one site, say at Enborne Business Park and Ferry Yard Industrial Park, one contractor and one quote can cover both.

Keynor Estate is about 2 miles north of Selsey, in West Sussex. Looking for coloured sealant in Keynor Estate? We can help. Our West Sussex coverage takes in 373 places, from busy centres to rural villages. Sites around Portsmouth have their own page, roughly 13 miles from Keynor Estate.

Anyone looking for coloured sealant in PO20 gets the same process as the rest of our area: details, then a fixed price, then sealing and a 12-month guarantee. Among the streets we cover are Chalk Lane and Cow Lane, and sites on any of them can send details for a fixed quote. Nearby places we also cover include Sidlesham (1 mile north-east), Street End (1 mile north), Church Norton (2 miles south-east), Sidlesham Common (2 miles north) and Pagham (2 miles east) for colour-matched joints. Nearby towns on our patch include Bognor Regis (5 miles east), Chichester (5 miles north), Littlehampton (12 miles east), Rustington (13 miles east), Angmering (14 miles east) and Portfield (5 miles north).

Near you in Keynor Estate

Recent enquiries here include premises near The Academy and the streets around them. Keynor Estate’s nearest station is Chichester station, about 4.4 miles north. Other landmarks nearby include Selsey Lifeboat Museum (2.9 miles south) and St Richard's Hospital (5.2 miles north).

Map of Keynor Estate © OpenStreetMap contributors

Looking after the joints

For the best life from the joints:

  • Check a trial length in real light
  • Keep harsh solvents away from visible joints
  • Avoid piecemeal repairs on coloured joints
  • Ask contractors to check the colour before resealing

Clean coloured joints with mild, non-abrasive products. Strong solvents and abrasive pads can dull or mark the surface.

Make sure every contractor knows which sealant and colour are on the building file. It stops mismatched repairs creeping in.

Accreditations

Trusted. Accredited. Insured.