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

Mountain Street construction mastic

Planning work on a mastic package in Mountain Street? We look at it, seal it with the right product and hand it over with a 12-month guarantee.

  • Inconsistent sealant finishes from plot to plot
  • Perimeter gaps outside the sealant’s range
  • External joints sealed in damp or cold conditions that are now failing
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
12-month guarantee on our workmanship.
South East, London & Scotland
CHAS & Constructionline
£5m PL insurance

Construction mastic in Mountain Street

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

About our construction mastic in Mountain Street

Mastic follows everyone else, which means it absorbs every delay upstream. The sequence is set with the site team and updated as plots or floors are handed over. That keeps the work right first time and saves rework. Most enquiries involve different trades sealing to different standards and early adhesion failures on new external joints, on internal decorators’ caulk, brick and block movement joints and sanitary and kitchen joints. Most enquiries from Mountain Street 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.

For a site near Mountain Street, the mastic visit is planned so the right sealants, primers and backing rod are on hand, timed to the stage the job has reached. Drawings, photographs and the programme let us give a fixed quote.

Every job ends the same way: guaranteed. You get a 12-month guarantee on our workmanship, and we explain exactly what that covers when we quote.

Location
Mountain Street (CT4)
Region
Kent
Guarantee
12 months on our workmanship
Quote
A fixed quote before we start
Telephone
01277 525 020
Page updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

On site: what to expect

On arrival, we sign in, go through any site induction and check how permits are handled. Everything around the joints gets protected before any cutting starts, with the work itself normally taking anything from a day of snagging to several weeks of plot-by-plot sealing on a phased scheme. Jobs in and around smaller places like Mountain Street are normally planned as a single visit, so photographs and measurements up front really help. That way the right products come on the day.

  1. First we look at the scope on site or from drawings.
  2. A fixed quote sets out scope, products and phasing.
  3. Site paperwork is confirmed and our CSCS-carded applicators are inducted.
  4. We seal plot by plot or floor by floor in line with the programme.
  5. Problems we find, such as oversized gaps, are raised straight away.
  6. Final snagging is completed and the 12-month guarantee applies.

Preparing the site

  • Point out parking and an unloading spot
  • Point out any areas we must not close
  • Tell staff and tenants when we will be in

Request a quote

Let us know the site, the scope and your timescale, and a fixed quote will follow. The easiest way is to speak to us on 01277 525 020 or send photos by email.

Ask for a quote

Read more

Cost factors for mastic packages

A fixed quote reflects the actual work. It takes account of:

  • Travel to remote or island sites
  • The total length or number of joints
  • Removal of failed or old sealant
  • The site’s rules and procedures

Small jobs and large programmes are priced from the same things: what’s in scope, how we reach it, what’s specified and when it needs doing. Call for a quote and we will put a fixed figure on it.

Before you send an enquiry

Good information means a firmer quote. When you get in touch, include:

  • Approximate linear metres or a joint schedule
  • The product your specification calls for
  • Any dates the work must fit around
  • Anything awkward about access or site hours

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

Leave it or put it right?

When a package runs over budget, downgrading the product is a common first thought. The saving is small next to the cost of callbacks and defects. We price the specified product and will tell you plainly where an alternative would or wouldn’t work. Older rural buildings around Mountain Street move with the seasons, and rigid or tired sealant can’t keep up. A sealant with the right movement capability, correctly sized, lasts far better.

The product called for affects the cost, and so does the preparation. Access, phasing and site rules also count.

Why appoint us

  • Public liability insurance in place
  • Products installed to the manufacturer’s instructions
  • Matching to RAL references, product permitting
  • Health and safety: CHAS accredited

Take a look at our cost guide or how we’re accredited.

Commercial clients in Mountain Street

Hospitality, education, healthcare, office and retail clients book us directly too. The work is planned around how the building runs, so guests, pupils, patients or staff are disturbed as little as possible.

As a CHAS accredited contractor and Constructionline member, we are straightforward to vet for your supplier list. Our insurance certificate can be sent along with the quote.

When to call us in Mountain Street

A new building moves while it dries and settles. Plaster, screeds, timber and blockwork all shrink as they lose moisture. Choosing the right product for each joint reduces that.

Clients usually get in touch after noticing something like this:

  • A mastic package split between trades with no clear owner
  • Window and door perimeters that won’t pass inspection
  • Internal caulk splitting as the building dries out
  • Oversized or tapered gaps around new frames

Hospital estates such as Kent and Canterbury Hospital (to the east of Mountain Street) 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.

Questions to ask before you book

  • The terms of the workmanship guarantee
  • Will RAMS and insurance details be available?
  • The named product and why it was chosen
  • Whether their applicators hold CSCS cards

Questions to ask before you appoint anyone

FAQs: Mountain Street

Is a smaller place like Mountain Street outside your area?

Not at all: smaller places are covered as well as towns. We work across Greater London and the South East. Send photos and a list of what needs doing, and we will plan the job to need as few trips as possible.

Is hospital work, at somewhere like Kent and Canterbury Hospital, something you do?

Yes. Healthcare sites are among the places we work. Each area is agreed with the ward or department and the estates team in advance.

When can you be on site?

The office is staffed Monday to Friday, from 8am until 5pm. Let us know your site hours and access windows, and the work will be planned around them.

Can the sealant be colour-matched?

Often, yes. Sealants are made in a wide range of standard colours, and matching to RAL references or nearby finishes is commonly requested. We confirm what’s available for the specified product when we quote.

Do you seal on top of existing sealant?

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

Can you clear a mastic snag list before handover?

Yes. Damaged, missed or untidy joints are stripped and done again properly to suit the programme.

What about RAMS and site documents?

Requirements differ from site to site, so list what you need, whether RAMS, insurance or CSCS details, and we will confirm with the quote.

New build and refits around Mountain Street

Central London is about 49 miles from Mountain Street. Commuter-belt towns tend to see a steady flow of new flats, offices and commercial schemes, and main contractors there need mastic that keeps to the programme. 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.

For contractors building in or near Mountain Street, we seal to the drawings, the specification and the programme.

Mountain Street is about 6 miles south-west of Canterbury, in Kent. Businesses, contractors and managing agents in Mountain Street can call on us for mastic packages. We work across 931 places in Kent. There’s a separate page for London, roughly 49 miles from Mountain Street.

Commercial sites across CT4 are covered for mastic packages. If your building is just outside Mountain Street, we cover Chilham (1 mile north-east), Godmersham (1 mile south), Old Wives Lees (1 mile north), Shottenden (2 miles north-west) and Bilting (2 miles south). A short drive away, we cover Ashford (8 miles south-west), Canterbury (6 miles north-east), Sittingbourne (12 miles north-west), Folkestone (14 miles south-east), Whitstable (9 miles north) and Faversham (6 miles north-west).

Local landmarks in Mountain Street

We work on buildings around Woolpack Inn and Broadham Down, among other places. Mountain Street’s nearest station is Chilham station, roughly 0.8 miles north-east. A little further out are Kent and Canterbury Hospital (5.7 miles east) and Chilham Castle (under half a mile north).

Map of Mountain Street © OpenStreetMap contributors

Aftercare for building managers

Cleaning and maintenance staff play a part too. Share these points with them:

  • Keep scrapers and abrasive pads off new beads
  • Stick to the specified sealant rather than a generic substitute
  • Brief following trades on areas that have been sealed
  • Bring the mastic contractor in after the last trades are through

Record which products went where in the handover file. That helps the building owner maintain the joints later and avoids guesswork when joints are renewed. Tell us what records you need and we will confirm with the quote.

Oversized gaps are a problem better caught early. Filling a wide gap with sealant alone sets up a failure so packing or adjustment by the installer comes first. We raise them during our first walk of the area.

Accreditations

Trusted. Accredited. Insured.