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

Facade Sealing contractors in Brentwood

Looking for facade sealing in Brentwood? It’s simple: send details, get a quote, we seal, guaranteed.

  • New sealant peeling off old mastic
  • Water coming in around window frames
  • Air leaks through failed facade joints
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
A fixed quote for the work, with the scope in writing.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
London, the South East & Scotland
CHAS & Constructionline
£5m public liability

Facade sealing near Brentwood

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

Our process

We begin with a short walk round with whoever looks after the building, agreeing which joints are in scope, where to start and what must stay open. Then we strip out anything that has failed, prepare every joint and seal it. If you have more than one building in Brentwood, they can often be done on the same visit, with one quote covering them. Give us your access times and we’ll fit the work in.

  1. First we review photos, drawings or what we saw on a visit, and agree how each joint will be reached.
  2. Failed sealant is cut out along its full length.
  3. Both faces are cleaned and, where the product needs it, primed.
  4. Closed-cell rod fixes the depth, and the sealant grips two sides only.
  5. A facade-grade sealant rated for the movement goes in, tooled to a concave profile.
  6. The completed runs are checked with you, then the 12-month guarantee applies.

Preparing the site

  • Point out parking and an unloading spot
  • Point out any areas we must not close
  • Make sure the joints can be reached

Request a quote

Every job follows the same four steps: send details, get a quote, we seal, guaranteed. The first step is to give us a call on 01277 525 020 or send photos by email with what you know.

Get a quick quote

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About our facade sealing in Brentwood

Some clients need every window on a block resealed; others need a few leaking frames sorted. Either way, the method is the same: cut out, clean, back, prime where needed and seal. Each job carries our 12-month guarantee. If you’re dealing with air leaks through failed facade joints and new sealant peeling off old mastic, we can help, on perimeter joints where frames meet the structure, window and door perimeters and coping and flashing joints alike. For commercial sealant work in Brentwood, you deal with one contact from quote to sign-off, whether it’s one building or several.

In towns like Brentwood, sites are typically modest: small housing schemes, extensions to schools and surgeries, refurbished shops and offices. The perimeter and facade joints on a small scheme need the same sizing and preparation as on a big one.

Our 12-month guarantee is about workmanship, not wear and tear. Sealant wears with time, and movement, weather, cleaning and use decide how fast, so we spell out the cover before we begin.

Place
Brentwood (CM13, CM14, CM15, CM4)
Region
Essex
Guarantee
12 months on our workmanship
Price
A fixed quote before we start
Phone
01277 525 020
Updated
3 November 2026
The Mastic Doctor team standing beside their branded vans outside an office building

New build and refits around Brentwood

At about 19 miles from central London, Brentwood is within reach of the capital. Construction around the commuter belt mixes station-side flats with refurbished offices and units, which keeps mastic packages in demand. Rainfall across the South East, Brentwood included, is lower than in many parts of the UK. Still, external mastic needs dry faces within the maker’s temperature limits, which isn’t every day, which is why external dates are agreed with the site manager.

Hospital estates such as Nuffield Hospital (to the south-east of Brentwood) tend to grow and change in phases, often next to occupied wards, so facade and perimeter sealing has to fit the estates team’s plan. For a contractor at a hotel such as Brentwood Hotel, 0.8 miles to the south of Brentwood, the mastic often has to be finished before a reopening date.

Brentwood is about 19 miles north-east of London, in Essex. Any commercial site in Brentwood is covered. 644 places across Essex fall within our area, including Brentwood. We also cover London, some 19 miles away.

If you need facade sealing in CM13, CM14, CM15 and CM4, the process matches everywhere else we work: details, then a fixed price, then sealing and a 12-month guarantee. We cover commercial and managed buildings on High Street, London Road and Old Church Road and the roads nearby. Brentwood sits on or close to the A12 and A128. Sites close to Brentwood are covered too, including Shenfield (1 mile north-east), Hutton Mount (1 mile east), Ingrave (2 miles south-east), Hutton (2 miles east) and Doddinghurst (3 miles north). A short drive away, we cover Chelmsford (11 miles north-east), Basildon (8 miles south-east), Harlow (13 miles north-west), Canvey Island (14 miles south-east), Billericay (5 miles east) and Rayleigh (13 miles east). As one of the bigger centres in Essex, Brentwood has a broad mix of commercial, public and industrial buildings.

Around Brentwood

Locally, jobs take us to sites close to Sawyers Hall College, Weald Country Park and St Helen's Catholic Junior School. The nearest railway station is Brentwood station, about 0.9 miles south. A little further out are Brentwood Community Hospital (0.5 miles east). Open spaces near Brentwood include Thorndon Park.

Map of Brentwood © OpenStreetMap contributors

What the job involves on each surface

Perimeter joints at frames and structure

The joint around a framed system, where it meets the structure, needs sealant. We seal those perimeter joints rather than the system it surrounds.

Brick and stone facades

Joints in natural stone need care to avoid staining. The specified stone-compatible sealant is what we use, and mask the edges carefully.

Signs you need facade sealing in Brentwood

Not every failure is in the sealant: crumbling render, spalling concrete or flaking paint take the sealant with them. When the joint edges need repair first, we say so.

These are often picked up first by site or facilities staff:

  • Unsightly perimeter sealant on a visible elevation
  • Failed sealant on precast panel joints
  • Hard, chalky sealant that no longer flexes
  • Air leaks through failed facade joints

With historic properties like Ingatestone Hall, 4.4 miles to the north-east of Brentwood, in the area, refurbishment work often meets old masonry that needs compatible sealants.

Before you book anyone

  • What the guarantee covers, and for how long
  • How they handle RAMS and site documents
  • How joint depth will be controlled
  • How the joint faces will be prepared and primed

Choosing a commercial sealant contractor

Looking after the joints

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

  • Ask about asbestos in pre-2000 mastic
  • Inspect facade joints on a regular cycle
  • Combine resealing with other works that need access
  • Avoid patch repairs on failed facade joints

Keep a note of which product went in and when. Future work can then match the product and colour without guesswork.

Coordinate facade sealing with other external works. One set-up for several trades saves money.

Your questions answered

Can the mastic package for our job in Brentwood follow the site programme?

Yes. Send the programme and drawings, and we will plan the mastic to suit the stages. Tell us which site documents you need, such as RAMS, our insurance certificate or CSCS details, and they’re confirmed with the quote.

Do you cover business parks and estates near Brentwood, such as Warley Hill Business Park?

Yes, sites like Warley Hill Business Park are within our area, along with the rest of Brentwood. To start, just give us a call on 01277 525 020 or send details through our quote form with the unit, the joints involved and your access times.

Is it okay to overlay old mastic?

No. Overlaying is a shortcut that peels away quickly. Our method is a full cut-out, cleaning, backing and a new bead.

Is it fine to apply new sealant on top of old?

No. Failed sealant is removed and the faces cleaned back to sound, dry material first, because fresh silicone will not bond with aged silicone.

Can you follow the specification on our project?

Yes. The specification and the manufacturer’s installation guidance are what we work to.

Are your applicators CSCS-carded?

Yes. Should the site need card details in advance, tell us and we will confirm them with the quote.

Do you guarantee your work?

Yes. Our workmanship is backed for 12 months.

When to bring in a specialist

Paperwork matters too. Many sites expect CSCS cards, RAMS and proof of insurance, and we’ll confirm the paperwork you need with the quote.

What you see is the finished bead, but most of the work is hidden. Correct depth, the right primer and a sealant matched to the movement are easy to get wrong without experience.

What happens if it’s left?

Open facade joints also let air and dirt through: draughts around frames add to heating costs and complaints. A new seal closes the gap for both. In a town like Brentwood, a split, stained or mouldy joint is often the first thing visitors notice. Fresh sealant makes a building look maintained.

A quote for facade joints depends on quantities, condition and access. Ask us for a fixed quote.

What you get with us

  • Constructionline member for supplier checks
  • Work carried out by CSCS-carded applicators
  • Old sealant cut out, never sealed over
  • Colour agreed before work starts

Take a look at what affects the cost or our accreditations.

Accreditations

Trusted. Accredited. Insured.