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

Facade and window perimeter sealing in Shellow Bowells, Essex

Facade joint and window perimeter sealing on commercial buildings in Shellow Bowells. CHAS accredited and fully insured, with a 12-month guarantee.

  • Leaks at window and door perimeters
  • Weathered joints at frame-to-structure perimeters
  • Old perimeter mastic that has dried out
1
Send details
Send the specification, photos or a marked-up plan.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
London, the South East & Scotland
CHAS & Constructionline
£5m PL insurance

Facade sealing for Shellow Bowells sites

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

Maintenance after handover

Every sealant joint needs some looking after, and how long they last depends on how they’re treated. Our advice:

  • Walk the elevations once or twice a year
  • Check the asbestos register before old mastic is disturbed
  • Keep pressure washers away from fresh sealant
  • Report water ingress at frames as soon as it shows

Include facade joints in your planned maintenance inspections. Watch for splits, gaps at the edges, hardening and discolouration; note where they appear.

Deal with sections that fail early as soon as they show. Small repairs stop small leaks becoming large ones behind the facade.

Facade sealing in Shellow Bowells, done properly

External sealing depends on the weather more than most trades. Joints have to be dry and the air and surface temperature within the product’s range, and cold, damp starts can delay work. We build that into the programme and tell you if the forecast changes the plan. If you’re dealing with failed sealant on precast panel joints and patch repairs that keep failing, we can put it right, on perimeter joints where frames meet the structure, cladding panel joints and stone and brick facade joints alike. Most enquiries from Shellow Bowells start with one failed joint and grow into a wider look at the building: we look at the rest while we are there and tell you what we find.

Around smaller places like Shellow Bowells, building work normally means conversions of farm buildings, a few new houses or an extension to a hall or school. Each still needs a proper mastic package: window perimeters, facade joints and internal sealant to the specification.

Guaranteed is the last step of every job. Our workmanship is backed for 12 months, and the quote explains what it covers.

Where
Shellow Bowells (CM5)
Region
Essex
Cover
12 months on every job
Price
A fixed quote before we start
Telephone
01277 525 020
Updated
3 November 2026
The Mastic Doctor team standing beside their branded vans outside an office building

Surface by surface

Render and coated surfaces

Sealant can only hold as well as the render or paint beneath it. We remove flaking material so the bead bonds to a firm surface.

Perimeter joints at frames and structure

These frame-to-structure joints take a lot of movement and weather. We cut them out, prepare both faces and reseal to the specification with a product suited to glazing perimeters.

Honest limits

Before quoting, we check that sealant is the right answer. It won’t put right:

  • Providing access systems for the work
  • Joints too narrow for the movement they take, which need redesign
  • Leaks from roofs, gutters or failed flashings rather than sealant joints

Not sure which it is? You can ring 01277 525 020 or send photos by email and we will tell you honestly before you book.

Where we work in Shellow Bowells

  • Shopfront frames
  • Coping and flashing joints
  • Perimeter joints where frames meet the structure
  • Window and door perimeters
  • Cladding panel joints
  • Stone and brick facade joints

Shellow Bowells: questions and answers

Is hospital work, at somewhere like Chelmsford and Essex Hospital, something you do?

Yes, healthcare and care buildings are part of our work. Before anything starts, the estates team agrees permits, inductions and infection-control measures with us.

Is Shellow Bowells too small for you to travel to?

Not at all. Shellow Bowells is within our area. Our area covers London and the South East counties. Send photos and a list of what needs doing, and we will plan the job to need as few trips as possible.

Do you guarantee your work?

Yes. It runs for twelve months and covers how we prepared and sealed the joints, though not damage or work by other trades.

How long before the joints can be used?

Curing time varies by product, and we confirm it on the day.

Which sealant will you use?

Where there’s a specification, we use the product it names. Otherwise, we recommend a product to suit the joint’s movement, the substrate and the conditions, following the manufacturer’s guidance.

What hours do you work?

Give us your site hours and any access windows in your enquiry, and we will schedule the work to suit. You can reach the office between 8am and 5pm, Monday to Friday.

How many days will you need on site?

That varies with the scale of the job, but the work usually takes anything from a single day to several weeks, depending on joint lengths, access and the weather. For bigger or phased jobs, we’ll set out a timescale with the quote.

Building and refurbishing in Shellow Bowells

At about 25 miles from central London, Shellow Bowells is within reach of the capital. Building activity in the commuter belt runs from new flats near stations to business park refurbishments, so mastic packages have to keep pace with busy programmes. Shellow Bowells sits in one of the drier corners of the country, the South East. Even so, frost and condensation on steel and glass are common on winter mornings, so the external programme keeps a little slack.

University estates such as Writtle University College Cow Watering Campus, 3.2 miles east of Shellow Bowells, tend to have a rolling programme of new buildings and refurbishments, each with window perimeters and facade joints to seal. Hospital estates such as Chelmsford and Essex Hospital (5.7 miles east of Shellow Bowells) 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.

Shellow Bowells is about 7 miles west of Chelmsford, in Essex. Commercial clients in Shellow Bowells can call on us for facade joints. We work across 644 places in Essex, from busy centres to rural villages. For work in that direction, see our London page.

Business premises anywhere in CM5 are within our area. Close to Shellow Bowells, our area also takes in Willingale (1 mile west), Berners Roding (1 mile west), Radley Green (2 miles south), Chalk End (2 miles north-east) and Roxwell (2 miles east). Bigger towns within reach include Chelmsford (7 miles east), Basildon (13 miles south-east), Braintree (14 miles north-east), Harlow (9 miles west), Brentwood (8 miles south) and Maldon (15 miles east).

Around Shellow Bowells

Well-known places in the area include Willingale Doe (0.7 miles west) and Chelmsford and Essex Hospital (5.7 miles east).

Map of Shellow Bowells © OpenStreetMap contributors

Commercial clients in Shellow Bowells

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

CHAS accredited and a Constructionline member, we make supplier vetting simple. We are fully insured, and our insurance certificate can go with the quote.

How a job runs

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. After that, any old or failed material is removed, each joint is prepared and the new sealant goes in. For a building around Shellow Bowells, 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 plan access and the order of elevations with the client.
  2. We only seal when joints are dry and within the product’s temperature range.
  3. We remove the old bead and check the edges are sound.
  4. Joints are cleaned, primed if required and fitted with backing rod.
  5. Facade-grade sealant goes in and is tooled to a tidy concave profile.
  6. Once signed off, the work carries our 12-month guarantee.

What we need from you

  • Flag any permit to work we will need
  • Send any specification or drawings in advance
  • Agree which areas must stay open

Request a quote

Specifications, drawings and tender packages are welcome with any enquiry, and we’ll price against exactly what is specified. Smaller jobs need nothing more than photos and a few notes.

Get a quick quote

Read more

Why it’s worth doing now in Shellow Bowells

Scaffold or access already on site makes resealing much simpler. Coordinating facade sealing with other external works avoids paying for access twice, saving a second set-up. Converted and older buildings near places like Shellow Bowells tend to move, and aged sealant cracks. The right product, sized to the joint, copes much better.

Whether it’s a single area or a whole estate, the same things set the price: what’s in scope, how we reach it, what’s specified and when it needs doing. Call for a quote and we’ll put a fixed figure on it.

Why us?

  • Constructionline member for supplier checks
  • Commercial sealant work since 2005
  • One phone line for London, the South East and Scotland
  • CSCS-carded applicators

Read how commercial sealant jobs are priced or how we’re accredited.

Accreditations

Trusted. Accredited. Insured.