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

Mastic Sealing in Braughing

Our CSCS-carded applicators take on mastic sealing for building owners, managing agents and housing associations in Braughing. Send details for a fixed quote.

  • No planned programme for sealant
  • Movement joints with sealant missing
  • Worn sealant at communal door frames
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
Covering the South East & Scotland
Constructionline member
£5m PL insurance

Need mastic sealing in Braughing?

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

Leave it or put it right?

Open external joints let water into walls and around frames. That can lead to damp, staining and damage to finishes and those cost far more to put right. For buildings around smaller places like Braughing, water damage can go unnoticed for longer, especially where a building isn’t used daily, which gives a failed joint time to do damage. Renewing joints in good time avoids the problem.

The work involved drives the cost: stripping out, preparation, sealing, access and phasing. Call for a fixed quote and we will explain how it’s made up.

What you get with us

  • Standard and matched colours in many product ranges
  • A fixed quote before work starts
  • A Constructionline member, so easy to vet
  • 12-month guarantee on workmanship

See what affects the cost or how we’re accredited.

About our mastic sealing in Braughing

In buildings from before 2000, some old mastics contain asbestos. We check the asbestos register or survey before any old sealant is cut out and if it’s suspected, work stops until it’s tested. Removing asbestos-containing material isn’t something we do. The enquiries we see most involve failed external movement joints and estate-wide sealant that is simply worn out, across balcony and threshold joints, communal kitchens and washrooms and shopfronts below residential blocks. Most enquiries from Braughing start with one failed joint and grow into a wider look at the building: we check the joints around it and give you an honest view of what needs doing now and what can wait.

Owners and agents with buildings around smaller places such as Braughing tend to manage small terraces of association properties, converted barns and commercial units. Frame and wall-joint mastic on all of them ages and hardens.

The 12-month guarantee is for workmanship rather than 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
Braughing (SG11)
Region
Hertfordshire
Cover
A 12-month guarantee
Quotes
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

Braughing: questions and answers

Can you quote for mastic across several buildings in and around Braughing?

Yes, we quote for single buildings and for programmes across several blocks. Send the addresses and photos and we’ll give a fixed quote.

Is Braughing off your patch?

Not at all. Braughing is within our area. Our area covers London and the South East counties. Where we can, we group nearby jobs to make the most of each trip.

Does weather matter for sealant work?

Outside, yes. Sealant needs a dry joint and a temperature within the product’s range, so frost, rain or cold mornings can delay outside work. Internal work is rarely affected.

How do you handle work on occupied blocks?

Occupiers stay in the building throughout. We flag any areas that need internal access well before the dates so you can arrange it with occupiers.

What about access for upper-floor joints?

Access is discussed and agreed before the quote is fixed. Tell us the building height and any access already in place and we’ll confirm the approach in the quote.

Will you just go over the old sealant?

No. We cut the old material out and clean the joint back before sealing, because fresh silicone will not bond with aged silicone.

How long does a job like this take?

It depends on the scope, but the work usually takes a few days for most blocks, with larger programmes scheduled building by building. Larger or phased jobs take longer, and we will give you a timescale with the quote.

Frames, entrances and external joints in Braughing

Braughing sits in one of the drier corners of the country, the South East. Even so, frame mastic only goes on in dry, workable conditions, and south- and west-facing elevations, which take the most sun and rain, often age first. Central London is about 29 miles from Braughing. Commuter-belt towns tend to have plenty of managed blocks near stations and town centres; their frame mastic often ages block-wide.

For a school such as Jenyns First School and Nursery, perimeter mastic on windows and doors is a holiday job. If you own or manage units on a site such as Standon Business Park, which lies south of Braughing, failed mastic on frames, door surrounds and external joints can be dealt with unit by unit.

Braughing is about 6 miles north-west of Bishop's Stortford, in Hertfordshire. We cover commercial sites throughout Braughing, whether it’s a single job or part of a planned programme. Our Hertfordshire coverage takes in 371 places. Our London page has more on work in that area, about 29 miles away.

Business premises anywhere in SG11 are within our area for mastic joints. Buildings on The Street, Pentlows and Northfield are within our area. If your building is just outside Braughing, we cover Hay Street (1 mile north-west), Westmill (2 miles north-west), Albury (2 miles east), Gravesend (3 miles east) and Furneux Pelham (3 miles north-east). A short drive away, we cover Stevenage (9 miles west), Bishop's Stortford (6 miles south-east), Welwyn Garden City (12 miles south-west), Hitchin (13 miles west), Hoddesdon (11 miles south) and Cheshunt (14 miles south).

Landmarks near Braughing

Around Braughing, our work takes us to commercial buildings near The Axe And Compasses Public House, among other places. A little further out are Moated mound (3.7 miles east).

Map of Braughing © OpenStreetMap contributors

Common problems we fix in Braughing

Occasionally the substrate fails, not the sealant, such as crumbling render, brick arrises or frame edges. If the edges are unsound, we say so before quoting the sealing.

Typical triggers for a call:

  • Leaks at window and door perimeters
  • Communal area joints that look neglected
  • Cracked, hardened mastic round windows on a block
  • Movement joints with sealant missing

Churches, halls and community buildings such as Parish Church of St Mary the Virgin are looked after by trustees and committees like any other owner, and their frames, doors and external joints need mastic renewed in time.

Questions to ask before you book

  • Whether old or failed sealant will be cut out, not overlaid
  • Are they CHAS accredited or on Constructionline?
  • Will RAMS and insurance details be available?
  • How the joint faces will be prepared and primed

Questions to ask before you appoint anyone

How the job changes by surface

Estate-wide resealing programmes

Housing associations and agents often manage many similar blocks. Each block is priced and scheduled in order.

Tenement and older buildings

Natural stone can be marked by the wrong sealant, so we pick a grade that won’t mark it.

Building owners, agents and FMs in Braughing

Housing associations and managing agents often need work done across blocks and communal areas. We phase the work so people keep access, and each stage is agreed with your contact.

We work for building owners and managing agents on everything from one building to a spread of sites. One quote can cover more than one site, so there’s one set of paperwork to deal with.

Diagnose, treat, sign off

Diagnose, treat, sign off: that’s the shape of every visit. First comes an inspection and agreement on scope, then the work is carried out to the specified product and detail, and the job ends with a walk round and sign-off. Rural sites near Braughing may need directions, gate codes or a contact on site. Add it to your enquiry and we’ll build it into the plan.

  1. We check the asbestos register for older buildings and look at the joints.
  2. A fixed quote covers the joints, products and order of work.
  3. We strip out the old sealant.
  4. Joint faces are cleaned, backed and resealed.
  5. Buildings are completed in turn.

Before we start on site

  • For older buildings, check the asbestos register before work
  • Agree which areas must stay open
  • Share your working hours and any access restrictions

Getting a fixed quote

A good quote starts with a clear picture: the joints involved, quantities, access and the product called for. Share whatever details you have and we’ll fill any gaps with a visit.

Get a quick quote

Related advice

When to bring in a specialist

Some joints are best left to specialists: fire-rated seals that must follow a tested detail, trafficked floor joints and external movement joints among them. A poor seal in places like these tends to cost more to put right later.

For most general trades, sealant is a sideline. A specialist prepares properly, controls joint depth and picks a product with the right movement class.

Accreditations

Trusted. Accredited. Insured.