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

Coloured and colour-matched sealant in Aston, Hertfordshire

Commercial sealant work in Aston for contractors, FMs and building owners: coloured and colour-matched sealant for visible joints, with a fixed quote first.

  • Weathered sealant that no longer matches
  • Failed coloured sealant that has split or peeled
  • Shop fits that need consistent sealant colours across sites
1
Send details
Photos, drawings or a schedule, or we visit.
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
Our workmanship is guaranteed for 12 months.
South East, London & Scotland
CHAS & Constructionline
£5m PL insurance

Coloured sealant near Aston

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

Coloured sealant in Aston

Where colour is critical, a sample bead in a discreet spot settles the question. Cured sealant may look a shade different from the wet bead, and lighting changes it again, so seeing it in place helps. Let us know who signs off colour, and we’ll fit the sample into the programme. If you are dealing with old sealant that has yellowed, darkened or faded and fit-outs with a sealant colour in the specification, we can put it right, on hotel bathrooms and public areas, natural stone and brick and shop-fit joinery and counters alike. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: on jobs in Aston, preparation and product choice get the time they need.

A job in a smaller place like Aston is typically a single building. We plan the visit so everything on the list is done in one go, with the right products and colours on hand.

We sign every job off with a 12-month guarantee. It’s a plain promise: if our work fails within that year, we put it right.

Where
Aston (SG2)
Wider area
Hertfordshire
Guarantee
12 months on our workmanship
Quote
Quoted before any work starts
Phone
01277 525 020
Last updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

After the work

Sealant joints are maintenance items, and their life depends on movement, exposure, cleaning and use. We suggest:

  • Agree the sealant colour early and write it into the specification
  • Note which sealant colour was used where
  • Plan full-run reseals on visible elevations
  • Insist on the agreed colour for any repair

Colours can soften with light and weathering. Some fading is part of normal ageing outdoors, and a reseal brings it back.

Put the sealant colour into the specification or finishes schedule. When colour is left to the last minute, it is often wrong, so agree it with the designer at the start.

How a job runs

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. Then we strip out anything that has failed, prepare every joint and seal it. Jobs in and around smaller places like Aston are usually planned as a single visit, so photographs and measurements up front really help. Then the right materials arrive with us.

  1. We confirm the joint type and the product it needs.
  2. Your RAL reference, sample or photo is checked against that product’s colours.
  3. The nearest colour is agreed, with a sample bead where needed.
  4. We cut out the existing bead, clean and set the depth.
  5. Edges are masked and the coloured sealant applied and tooled.
  6. Masking comes off and the work is checked with you.

Getting the site ready

  • Clear stock, furniture or equipment away from the joints
  • For older buildings, check the asbestos register before work
  • Warn occupants and staff about the work

Getting a fixed quote

Photos, drawings or a schedule of the joints are often enough for a fixed quote. Where a site visit makes more sense, we’ll arrange one.

Get a price

Advice

Work for main contractors and building owners

Main contractors use us as their sealant subcontractor. We work to your programme, your specification and your site rules, and our applicators hold CSCS cards.

Facilities managers want contractors who arrive with the paperwork sorted. Let us know the documents you need (RAMS, insurance certificate, CSCS details) and we’ll confirm them with the quote.

What Aston’s businesses ask us to seal

Aston sits in or beside Stevenage, a twentieth-century planned town. Offices and shops from that era have normally been refitted over the years, each refit adding joints to look after. Less than 3 miles from Aston there are at least three named estates and business parks. Units on sites like these change tenants and get refitted, and each refit leaves joints to seal, often in a colour the occupier specifies.

If you run an office at a site such as Astonbury Farm & Business Park, under half a mile south of Aston, the sealant at reception desks, tea points and frames ages with each fit-out. Offices and shops close to stations such as Knebworth station, 2.2 miles south-west of Aston, tend to be busy all day, so sealant work is planned around opening hours. Sites a few miles apart, such as Astonbury Farm & Business Park and Monkswood Retail Park, can share one programme and one point of contact.

Aston is about 2 miles south-east of Stevenage, in Hertfordshire. We send applicators to Aston for colour-matched joints, handled exactly as we handle every other area. Our Hertfordshire coverage takes in 371 places, from busy centres to rural villages. London is covered too, some 27 miles away.

We take on colour-matched joints across the SG2 postcode area, for business premises of every kind. We cover commercial and managed buildings on Penn Close, Benington Road and Brook Field. Just outside Aston, we also work in Bragbury End (1 mile south), Shephall (1 mile west), Hook's Cross (1 mile south), Benington (2 miles east) and Knebworth (2 miles south-west). A short drive away, we cover St Albans (12 miles south-west), Bishop's Stortford (13 miles east), Welwyn Garden City (7 miles south), Harpenden (10 miles south-west), Hitchin (7 miles north-west) and Hoddesdon (11 miles south-east).

What’s near Aston

Recent enquiries here include premises near The Heathcote School, Rose And Crown Public House and Barnwell School and the streets around them. The nearest railway station is Knebworth station, roughly 2.2 miles south-west. Well-known places in the area include Benington Castle (1.5 miles east) and Stevenage Museum (2.3 miles north-west). For a walk, there’s Ridlins Mire.

Map of Aston © OpenStreetMap contributors

How the job changes by surface

Paintable sealants

Some joints are better sealed with a paintable product and decorated. That only works where the joint and specification allow it.

Shop-fit and joinery finishes

In shops, joints are at eye level and inspected by customers. Clean masking and neat tooling matter as much as colour.

Cost factors for colour-matched joints

We price every job individually. The things that drive the figure:

  • The total length or number of joints
  • The site’s rules and procedures
  • How accessible the joints are
  • Backing rod, priming and other preparation

The specified product makes a difference, and so does the preparation, from cutting out to priming and backing rod. Access, phasing and site rules also count.

What we need to price the job

For an accurate fixed quote, we need to understand the site. Useful things to include:

  • Where the site is, with the postcode
  • Access details, including height
  • What the building is and how it’s used
  • When you need the work done

Quotes are fixed against the scope you send, so you know the figure before anyone is on site. To ask for one, ring 01277 525 020 or send details through our quote form.

General trades versus a specialist

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.

There’s also the paperwork. Many sites expect CSCS cards, RAMS and proof of insurance, and we’ll confirm the paperwork you need with the quote.

Questions about Aston

Is a smaller place like Aston outside your area?

Not at all. Aston is within our area. We work across Greater London and the South East. Where we can, we group nearby jobs to make the most of each trip.

Can the sealant on our Aston premises match the finishes?

Yes, we can normally get close to most finishes from the product’s colour range. The quote lists the colours the product is made in.

Will your applicators have CSCS cards?

Yes. Should the site need card details in advance, let us know and we’ll send them with the quote.

Can you fit around our working hours?

Mention the site’s hours and access windows in your enquiry, and we will plan around them. Our office runs Monday to Friday, 8am until 5pm.

Can you send site paperwork?

Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we’ll confirm with the quote.

Can you work while the building is occupied?

Normally, yes. We phase the work so most of the building stays in use.

Are you CHAS accredited and on Constructionline?

Yes. We’re CHAS accredited and a Constructionline member, which helps with supplier vetting.

Accreditations

Trusted. Accredited. Insured.