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

Construction and new-build mastic in Luddesdown, Kent

Mastic packages for new-build and refurbishment projects in Luddesdown and across Kent. CHAS accredited and fully insured, with a 12-month guarantee.

  • Sanitary sealant damaged by following trades
  • A long mastic snag list close to completion
  • New external sealant already peeling away
1
Send details
Send the specification, photos or a marked-up plan.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
London, the South East & Scotland
Constructionline member
£5m PL insurance

Construction mastic near Luddesdown

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

How a job runs

In a busy building, we agree a sequence with your contact so the disruption stays in one area at once. Each area is protected, prepared and sealed, then handed back before we move to the next. Jobs in and around smaller places like Luddesdown 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. First we look at the scope on site or from drawings.
  2. A fixed quote sets out scope, products and phasing.
  3. Paperwork is agreed and applicators are inducted on site.
  4. We seal plot by plot or floor by floor in line with the programme.
  5. Any frame gaps or issues outside our scope are flagged to the site team.
  6. The package is closed out, snags cleared and backed by our 12-month guarantee.

What we need from you

  • Tell us what induction or permit system the site runs
  • Tell us which areas need to stay in use
  • Make sure the joints can be reached

Getting a fixed quote

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

Ask for a quote

Read more

About our construction mastic in Luddesdown

On refurbishments, the mastic package usually includes cutting out old sealant as well as sealing new work. Old beads come out completely, as fresh silicone can’t grip old. After that, the joints are prepared and sealed to the specification. We work on brick and block movement joints, floor and skirting junctions and sanitary and kitchen joints, and the usual reasons a site gets in touch are mastic snags holding up handover and perimeter gaps outside the sealant’s range. Most enquiries from Luddesdown 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 Luddesdown, building work normally means conversions of farm buildings, a few new houses or an extension to a hall or school. Perimeters, facade joints and internal sealant all need doing properly, however small the scheme.

Our 12-month guarantee is about workmanship, not wear and tear. How long a sealant joint lasts depends on movement, exposure, cleaning and use, so we’re clear about what is covered before work starts.

The Mastic Doctor team beside their liveried vans in front of an office building
Place
Luddesdown (DA13)
Wider area
Kent
Guarantee
A 12-month guarantee
Quote
Quoted before any work starts
Phone
01277 525 020
Page updated
3 November 2026

General trades versus a specialist

For a quick touch-up, site staff may be fine, but larger jobs are different: a specialist brings efficiency, a consistent finish and a 12-month guarantee.

Certain joints really need a specialist: 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.

When it isn’t the sealant

Sealant solves a lot, but not everything, and we are upfront when that’s the case. It won’t fix:

  • Damage to finishes by other trades after we’ve sealed
  • Oversized gaps that need packing or adjustment by others
  • Designing joint widths or choosing the specification (that sits with the designer)

Not sure which it is? You can phone 01277 525 020 or email a schedule or drawings and we’ll tell you honestly before you book.

What we seal

  • Internal decorators’ caulk
  • Brick and block movement joints
  • Sanitary and kitchen joints
  • Floor and skirting junctions
  • Window and door perimeters
  • Cladding and panel joints

Sites and facades in and around Luddesdown

Luddesdown is in the South East, one of the UK’s drier regions. That doesn’t stop wet spells, or frosty starts that leave panels too damp to seal, so the external programme keeps a little slack. Central London is about 23 miles from Luddesdown. Commuter-belt towns tend to see a steady flow of new flats, offices and commercial schemes, so mastic packages have to keep pace with busy programmes.

Older buildings in the area around Luddesdown, such as Cobham College, 1.2 miles to the north of Luddesdown, need care when sealed: the product has to suit soft or historic materials. For contractors refurbishing units at places like Bowes Industrial Centre, which lies west of Luddesdown, the mastic covers cladding panels, roller-door and window perimeters.

Luddesdown is about 4 miles south of Gravesend, in Kent. Luddesdown sits inside our coverage and the rest of Kent, with the same fixed quotes and 12-month guarantee as everywhere else. We work across 931 places in Kent. For work in that direction, see our London page.

Business premises anywhere in DA13 are within our area for mastic packages. Just outside Luddesdown, we also work in Henley Street (1 mile north), Gold Street (1 mile north-west), Foxendown (1 mile west), Sole Street (1 mile north-west) and Round Street (2 miles north-west). Further afield, our area takes in Maidstone (9 miles south-east), Sittingbourne (15 miles east), Dartford (9 miles north-west), Sevenoaks (11 miles south-west), Gravesend (4 miles north) and Tonbridge (13 miles south-west).

Landmarks near Luddesdown

Recent enquiries here include premises near The Golden Lion pub and Camer Park Country Park, among other places. The nearest railway station is Sole Street station, about 1.2 miles north-west of the centre. Other landmarks nearby include French Hospital (4.7 miles east) and Rochester Castle (4.6 miles east). For a walk, there’s Ranscombe Farm and Gad's Hill.

Map of Luddesdown © OpenStreetMap contributors

FAQs: Luddesdown

Can you work on a hospital site such as French Hospital?

Yes, healthcare and care buildings are part of our work. Work is phased so departments keep running, under the site’s own rules.

Is Luddesdown off your patch?

Not at all: smaller places are covered as well as towns. We work across Greater London and the South East. Good photos up front let us bring everything on the first visit.

Which sealant will you use?

If the job is specified, we follow the specification. If not, we choose for the movement, the surfaces and the conditions, in line with the manufacturer’s guidance.

What about RAMS and site documents?

Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we’ll confirm with the quote.

Do you work to architects’ specifications?

Yes. We follow the specification, along with the manufacturer’s installation guidance, and we raise anything unclear before work begins.

Do you do internal caulk as well as external mastic?

Inside and out: frame perimeters, movement joints, caulk where called for, sanitary and kitchens in one fixed quote.

Do you offer coloured sealant?

It depends on the product. Some ranges offer many colours, others very few, so the available colours are confirmed with the quote.

Common problems we fix in Luddesdown

Swapping the specified sealant for a cheaper general-purpose product is a common cause of failure. A general-purpose silicone on a facade or a caulk in a wet area won’t perform like the specified product. We stick to the specified product, or put any alternative to you first.

Clients normally get in touch after noticing one or more of the following:

  • Failed sealant in an existing building being refurbished
  • Perimeter gaps outside the sealant’s range
  • Early adhesion failures on new external joints
  • Different trades sealing to different standards

For contractors at a school such as Meopham School, sealing has to be finished before term starts.

What to look for in a quote

  • Whether primer will be used where the manufacturer specifies it
  • Is the sealant right for the movement and the substrate?
  • How the existing material will be dealt with
  • What the guarantee covers, and for how long

Our contractor checklist

Maintenance after handover

Every sealant joint needs some looking after, and their life depends on movement, exposure, cleaning and use. We suggest:

  • Keep product details for future maintenance
  • Brief the final clean team to avoid blades near sealant
  • Brief following trades on areas that have been sealed
  • Ask installers to correct oversized gaps first

If a joint is damaged after sealing, flag it early. Snags can be picked up in a planned close-out visit, priced as part of the package or separately.

Oversized gaps are a problem better caught early. Sealant stretched over an oversized gap won’t last, so the installer needs to correct it first. We flag them as soon as we see them.

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. Where an alternative is genuinely suitable, we will say so. Halls, stores and units around places like Luddesdown may not be checked every day, which gives a failed joint time to do damage. Renewing joints in good time avoids the problem.

Pricing mastic packages depends on how many there are, their condition and the access. Call for a quote.

Why appoint us

  • Standard and matched colours in many product ranges
  • Joints cleaned back to sound surfaces
  • CHAS accredited contractor
  • One phone line for London, the South East and Scotland

See our cost guide or how we’re accredited.

Accreditations

Trusted. Accredited. Insured.