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

Mastic contractors in Felsted

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

  • Missed perimeter joints on a new elevation
  • Perimeter gaps outside the sealant’s range
  • Caulk cracking where joints are moving more than expected
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
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
Covering the South East & Scotland
CHAS & Constructionline
Fully insured: £5m PL

Construction mastic for Felsted sites

Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.

Common problems we fix in Felsted

On construction sites, joints normally fail early because of when they were sealed, not what was used. If sealant goes in before the last trades are through, it gets knocked, painted over or contaminated, so they end up back on the snag list.

Things that usually lead to an enquiry:

  • Inconsistent sealant finishes from plot to plot
  • Frame perimeters left unsealed or poorly sealed
  • Internal caulk splitting as the building dries out
  • Failed sealant in an existing building being refurbished

For contractors at a school such as Felsted Primary School, sealing has to be finished before term starts.

Comparing quotes

  • What site paperwork they can supply
  • How long is the guarantee, and what does it include?
  • Who will actually carry out the work
  • Is the sealant right for the movement and the substrate?

How to choose a sealant contractor

Construction mastic in Felsted, done properly

The programme rarely stands still, so the mastic package has to flex with it. We agree a sequence at the start and adjust it as the site manager releases areas, so applicators arrive when areas are genuinely ready. Sealing too early only means coming back once others have damaged it. Site teams most often ask us about sanitary sealant damaged by following trades and old sealant on a refurbishment that needs stripping before new work, across internal decorators’ caulk, sanitary and kitchen joints and brick and block movement joints. Facilities teams, main contractors and managing agents in Felsted tend to want the same three things: a fixed quote, no surprises on site and a 12-month guarantee behind the result.

For a site near Felsted, the mastic visit is planned so the right sealants, primers and backing rod are on hand. Send drawings or photographs and the programme and we will quote to suit.

Building owners and contractors get the same cover: twelve months on the work we carried out. It doesn’t extend to damage, faults in the building or work by others, and we’re upfront about that.

Place
Felsted (CM6)
Region
Essex
Guarantee
A 12-month guarantee
Quotes
A fixed quote before we start
Phone
01277 525 020
Last updated
3 November 2026
The Mastic Doctor team standing beside their branded vans outside an office building

Our process

Occupied buildings need a little choreography. The work area is signed and kept contained, keep walkways clear and work section by section so the rest of the building stays in use. Rural sites near Felsted may need directions, gate codes or a contact on site. Add it to your enquiry and we will build it into the plan.

  1. We start with the drawings, specification and programme.
  2. Quantities are measured and a fixed price returned.
  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. After snagging, the work is handed over under our 12-month guarantee.

Getting the site ready

  • Tell us what induction or permit system the site runs
  • Explain the parking and delivery arrangements
  • Tell us your opening times and when work is allowed

Request a quote

The quickest route to a quote is a few photos and the site postcode. Upload them with the quote form, or speak to us on 01277 525 020 or send photos by email if you’d rather talk the job through.

Ask for a quote

Read more

Aftercare for building managers

Sealant joints are maintenance items, and how long they last depends on how they’re treated. Our advice:

  • Keep product details for future maintenance
  • Ask installers to correct oversized gaps first
  • Plan external elevations with the weather in mind
  • Don’t schedule sealing before decorators and flooring are done

If a joint is damaged after sealing, flag it early. Snags can be picked up in a planned close-out visit as agreed in the quote.

Snag items left to the last week put handover at risk. A planned close-out through each area as it completes keeps the list short, and avoids a rush.

Building and refurbishing in Felsted

Felsted is in the South East, one of the UK’s drier regions. Winter mornings still bring frost and condensation on frames and panels, so we time external mastic for dry faces and agree it with the site team. At about 34 miles from central London, Felsted is within reach of the capital. Building activity in the commuter belt runs from new flats near stations to business park refurbishments, which keeps mastic packages in demand.

New wings at hospitals like Braintree Community Hospital, 4.6 miles to the east of Felsted, bring long runs of window and panel joints to seal. When units on a site such as Martels Industrial Estate, 2.5 miles to the west of Felsted, are refurbished or reclad, the panel joints and window perimeters are part of the mastic package.

Felsted is about 6 miles west of Braintree, in Essex. We cover commercial sites throughout Felsted. Felsted is one of 644 places we cover in Essex for mastic packages. London is covered too, some 34 miles away.

We cover the CM6 postcode districts for mastic packages. Buildings on Station Road, Braintree Road and Chelmsford Road are within our area for mastic packages. Just outside Felsted, we also work in Causeway End (1 mile south), Watch House Green (1 mile north-east), Little Dunmow (1 mile west), Bannister Green (1 mile east) and Brookstreet (1 mile west). Further afield, our area takes in Chelmsford (9 miles south), Braintree (6 miles east), Harlow (15 miles south-west), Maldon (14 miles south-east), Witham (9 miles south-east) and Saffron Walden (14 miles north-west).

Local landmarks in Felsted

In Felsted, that means premises near The Chequers pub and the streets around them. Well-known places in the area include Little Easton Moat (4.9 miles north-west) and Braintree Community Hospital (4.6 miles east). The countryside around Felsted includes Phyllis Currie Nature Reserve.

Map of Felsted © OpenStreetMap contributors

Why deal with it now?

Getting the mastic contractor involved early pays off. Early involvement means gaps, products and access are sorted before the programme bites. Called in at the end, the same issues surface during handover. Around Felsted, it’s better to renew all the failing joints at once. Photos of every joint help us quote for the whole job.

Larger quantities, tricky access or phasing all shape the price. Site requirements like inductions and permits play a part as well, along with the time of year for external work.

What you get with us

  • Our applicators hold CSCS cards
  • Fixed quotes based on photographs, drawings or a visit
  • Public liability insurance in place
  • Commercial sealant work since 2005

Read how commercial sealant jobs are priced or our accreditations.

Different surfaces, different methods

Fire-rated sealant where specified

Not every penetration suits a sealant. Other products are used for some services and gaps, and we will tell you if the detail calls for something else. Record requirements are agreed with the quote.

Kitchens and utility areas

Worktop upstands, sinks and splashbacks are sealed once the kitchen is fitted. The sealant is a kitchen-grade product, food-safe where food contact is possible.

Owners, agents and contractors

For main contractors, we work as the sealant subcontractor on new-build and refurbishment projects. We work to your programme, your specification and your site rules.

We take on planned maintenance as well as one-off repairs: working through a building or an estate in stages that fit your budget. Sites in Felsted can sit alongside others in a wider programme.

Your questions answered

Would you work within a site like Braintree Community Hospital?

Yes, hospitals are one of the sectors we cover. Each area is agreed with the ward or department and the estates team in advance.

Will you take on work at estates like Martels Industrial Estate, close to Felsted?

Yes, sites like Martels Industrial Estate are within our area, along with the rest of Felsted. To start, just call 01277 525 020 or email drawings and photos with the unit, the joints involved and your access times.

When is resealing likely to be due?

It depends on movement, UV and weather, cleaning, traffic and the product. Sealant joints are maintenance items, so inspect them regularly.

What does a mastic package normally include?

Inside and out: frame perimeters, movement joints, caulk where called for, sanitary and kitchens in one fixed quote.

How long does a job like this take?

That varies with the scale of the job, though a typical visit typically takes anything from a day of snagging to several weeks of plot-by-plot sealing on a phased scheme. For bigger or phased jobs, we will set out a timescale with the quote.

Do you take on multi-site work?

Yes. We take on portfolio and planned maintenance work, with each site phased to suit its occupants.

Do you take on mastic snagging only?

Yes. We can work through a mastic snag list area by area before handover and damaged joints are redone properly.

Accreditations

Trusted. Accredited. Insured.