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

Construction and new-build mastic in Broad Street, East Sussex

Work needed on a mastic package in Broad Street? We assess it, carry out the work and guarantee our workmanship for 12 months.

  • Frame gaps too wide for sealant alone
  • A long mastic snag list close to completion
  • New external sealant already peeling away
1
Send details
Drawings, photos, a joint schedule or a site visit.
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
Signed off, with 12 months’ guarantee.
London, the South East & Scotland
CHAS & Constructionline
£5m public liability

Construction mastic in Broad Street

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

About our construction mastic in Broad Street

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. We work on brick and block movement joints, internal decorators’ caulk and cladding and panel joints, and what we are called in for most is frame perimeters left unsealed or poorly sealed and sanitary sealant damaged by following trades. Facilities teams, main contractors and managing agents in Broad Street tend to want the same three things: a clear scope, tidy work and joints that don’t fail again.

Sites around smaller places like Broad Street can be a fair drive from suppliers, so we come with everything the package needs. Send drawings or photographs and the programme and we will quote to suit.

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 are clear about what is covered before work starts.

The Mastic Doctor team standing beside their branded vans outside an office building
Place
Broad Street (TN36)
Wider area
East Sussex
Cover
A 12-month guarantee
Quotes
A fixed quote before we start
Telephone
01277 525 020
Last updated
3 November 2026

Your questions answered

Is Broad Street off your patch?

No. Places such as Broad Street are covered as much as the big towns. We work across Greater London and the South East. Where we can, we group nearby jobs to make the most of each trip.

Is hospital work, at somewhere like Conquest Hospital, something you do?

Yes. Healthcare sites are among the places we work. The estates team’s permit system and infection-control rules come first, and the work is planned around them.

Can the sealant be colour-matched?

That depends on the product specified. Some ranges offer many colours, others very few, so we’ll confirm the colours available for the specified product with the quote.

Can weather delay the job?

It can, when the joints are outside. Sealant won’t bond properly to a wet or frosty joint, so we watch the forecast and rearrange outside work if we have to. Internal work is far less affected.

Do you seal on top of existing sealant?

No. We cut the old material out and clean the joint back before sealing, since fresh sealant will not bond reliably to aged material.

How many days will you need on site?

The duration is planned around your programme and the access we’re given. We’ll give you an estimate of time on site when we quote.

Can you work plot by plot or floor by floor?

We work to your programme. Tell us the sequence and we will plan applicators around it so sealing follows the trades.

Signs you need construction mastic in Broad Street

Wide, tapered or inconsistent gaps around frames are a common problem. Every product has limits on how wide a joint it can bridge and gaps beyond it need packing or adjusting by the frame installer. Better to raise it at the start than seal a joint that’s bound to fail.

Most enquiries start with something like this:

  • Early adhesion failures on new external joints
  • Existing joints on a refurb that need cutting out and resealing
  • Frame gaps too wide for sealant alone
  • Caulk cracking where joints are moving more than expected

Historic houses such as Lamb House (to the north-east of Broad Street) are a reminder of the older buildings in the wider area, where sealing against old stone, brick or timber needs compatible products.

Questions to ask before you book

  • What the guarantee covers, and for how long
  • What site paperwork they can supply
  • Which product they’ll use, and why it suits the joint
  • Health and safety accreditation such as CHAS

Choosing a commercial sealant contractor

Maintenance after handover

Once the work is signed off, a little attention goes a long way:

  • Check frame gaps are within the sealant’s range before sealing
  • Allow flexibility for external sealing in damp or cold weather
  • Ask for joint and product checks before the package is urgent
  • Use the product the specification names

A new structure shifts as it loses construction moisture. Flexible sealants in the right joints handle normal movement, but caulk in a joint that moves more than expected may crack. If that happens, let us know.

Snag items left to the last week put handover at risk. Clearing snags area by area spreads the work out and keeps handover on track.

Work for main contractors and building owners

Hospitality, education, healthcare, office and retail clients come to us directly as well. We plan around the way the building is used, so the building keeps working while we do.

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

From enquiry to sign-off

A typical day starts with protection: masking tape along the joint edges and sheeting over anything nearby. On site, the work usually takes a few days on a modest refurbishment and longer on multi-plot or multi-storey schemes, and our waste is bagged and taken away as we go. Jobs in and around smaller places like Broad Street are usually planned as a single visit, so we ask for photos and rough sizes first. That way the right products come on the day.

  1. Drawings, the sealant specification and your programme come to us for pricing.
  2. You receive a fixed quote listing scope, products and phasing.
  3. You tell us what site paperwork you need, such as RAMS, an insurance certificate or CSCS details, and we confirm it with the quote.
  4. We seal each plot or floor as it’s released to us.
  5. Each joint is prepared, backed to depth and sealed in the product the specification names.
  6. Snags are cleared before handover and completed areas carry our 12-month guarantee.

Before we start on site

  • Confirm the product named in the specification
  • Agree which areas must stay open
  • Point out parking and an unloading spot

Getting a fixed quote

A handful of photographs and a postcode is the fastest way to a quote. Send them through the quote form, or call 01277 525 020 or send photos by email if you’d rather talk the job through.

Get a quick quote

Related advice

Sites and facades in and around Broad Street

Broad Street lies within about 3 miles of the sea. On a coastal site, facade and perimeter joints face driven rain and, closer to the beach, salt, which puts weight on correct joint sizing, priming and a sealant suited to the exposure. The South East is one of the drier parts of the UK. Even so, frost and condensation on steel and glass are common on winter mornings, so external mastic is timed for workable conditions and agreed with the site manager.

When a school such as Icklesham Church of England Primary School is extended or refurbished, the mastic package is often squeezed into the holidays. New wings at hospitals like Conquest Hospital, 4.3 miles south-west of Broad Street, bring long runs of window and panel joints to seal.

Broad Street is about 5 miles north-east of Hastings, in East Sussex. Businesses, contractors and managing agents in Broad Street use us for work on mastic packages. We work across 308 places in East Sussex. We also cover Brighton, some 35 miles away.

If you need construction mastic in TN36, the process matches everywhere else we work: send details, get a quote, we seal, guaranteed. Sites close to Broad Street are covered too, including Icklesham (1 mile east), Udimore (1 mile north), Cock Marling (2 miles north-east), Three Oaks (2 miles south-west) and Broadland Row (2 miles north-west). Further afield, our area takes in Hastings (5 miles south-west), Bexhill-on-Sea (9 miles south-west), St Leonards (6 miles south-west), Hastings Old Town (5 miles south-west), Belmont (5 miles south-west) and Hollington (5 miles south-west).

Around Broad Street

For rail, the closest station is Doleham station, roughly 1.8 miles west. A little further out are Camber Castle (3.7 miles east) and Winchelsea Court Hall Museum (2.5 miles east). Green spaces nearby include Flatropers Wood.

Map of Broad Street © OpenStreetMap contributors

What happens if it’s left?

Getting the mastic contractor involved early pays off. We can check joint widths, flag frames with gaps that won’t seal and confirm products against the specification, which avoids last-minute problems. Leave it late and they turn up on the snag list. Converted and older buildings near places like Broad Street tend to move, and aged sealant cracks. The right product, sized to the joint, copes much better.

Access often affects the price as much as the sealing: joints within easy reach take less time than ones that need access equipment. Tell us how the joints are reached and call for a quote.

Why choose Mastic Doctor in Broad Street

  • 12 months’ guarantee on every job
  • Constructionline member for supplier checks
  • Specification-led, product-correct work
  • Joints cleaned back to sound surfaces

See what affects the cost and our accreditations.

Surface by surface

Snagging before handover

Snags usually come from damage by following trades, missed joints or poor earlier work. We price snagging as part of the package or as a separate visit, depending on what suits the programme.

Window and door perimeters

Internal perimeters are usually sealed with a paintable product where decorating follows. The specification decides which with colours matched to the frame where needed.

Accreditations

Trusted. Accredited. Insured.