Construction and new-build mastic in Stone, Kent
Mastic packages for new-build and refurbishment projects in Stone and across Kent. CHAS accredited and fully insured, with a 12-month guarantee.
- Failed sealant in an existing building being refurbished
- Perimeter gaps outside the sealant’s range
- Caulk cracking where joints are moving more than expected
Construction mastic near Stone
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
Construction mastic in Stone
Mastic Doctor has been a subcontractor on construction projects for over 20 years. Quantities come off the drawings, the sequence is agreed with the site manager and the work follows the trades. For construction mastic on a scheme in Stone, send drawings through our quote form, or phone or email us to talk it through. Most enquiries involve old sealant on a refurbishment that needs stripping before new work and external joints sealed in damp or cold conditions that are now failing, on sanitary and kitchen joints, floor and skirting junctions and cladding and panel joints. Looking for mastic applicators who cover Stone? We have been sealing commercial buildings since 2005.
In a smaller place such as Stone, construction tends to mean small housing schemes, conversions and extensions to community buildings. Even a small site needs its perimeter and facade joints sized, backed and sealed properly.
Work we carry out in Kent comes with a 12-month guarantee. Should something we installed fail, call 01277 525 020 or send photos by email and we’ll come back to it.
- Place
- Stone (DA9)
- Region
- Kent
- Guarantee
- 12 months on our workmanship
- Quote
- Fixed quote, scope in writing
- Telephone
- 01277 525 020
- Last updated
- 3 November 2026
Cost factors for mastic packages
Each job is priced on its own details. The main factors are:
- The site’s rules and procedures
- Whether the work must be split into stages
- The total length or number of joints
- Whether old sealant has to be cut out first
Small jobs and large programmes are priced from the same things: scope, access, product and programme. Call for a quote and we’ll put a fixed figure on it.
Before you send an enquiry
Whether it’s one area or a whole building, the same details help:
- Whether the building will be occupied during the work
- Your programme or deadline
- Access details, including height
- Specification clauses that apply
Send us photographs, drawings or a joint schedule and a fixed quote comes back to you. If the job needs a look first, we’ll arrange a site visit.
Aftercare for building managers
Problems stay small when the joints are checked regularly. Specifically:
- Stick to the specified sealant rather than a generic substitute
- Get the mastic subcontractor involved early in the programme
- Allow flexibility for external sealing in damp or cold weather
- Bring the mastic contractor in after the last trades are through
Tell the builders’ clean team which areas have new sealant. Blades and abrasive pads are the commonest cause of damage at the final clean.
Sanitary joints that fail early become defects soon after occupation. Leaks behind showers and basins damage finishes and floors, and the repair falls into the defects period. Proper preparation, with the right silicone first time, keeps it off the defects list.
Also near Stone
Also in Stone
Surface by surface
External facade and movement joints
External movement joints often need primer, depending on the substrate. We prime where the manufacturer specifies, and seal only with a dry joint inside the product’s temperature range.
Kitchens and utility areas
Worktop upstands, sinks and splashbacks are sealed once the kitchen is fitted. A kitchen-suitable sealant is used, food-safe where food contact is possible.
Your questions answered
Can you work at a site such as Bluewater Shopping Centre, by Stone?
Yes, sites like Bluewater Shopping Centre are within our area, along with the rest of Stone. Photos and a short description are enough for a first look.
Can you work around term dates at a campus such as University of Greenwich?
Yes, holiday working periods are the norm on campus jobs. We are CHAS accredited and a Constructionline member, and paperwork such as RAMS is confirmed with the quote.
Do you have public liability insurance?
Yes. Mastic Doctor is fully insured, public liability included.
Do you take on small jobs?
Whatever the size, the process is the same: details, then a fixed price, then sealing, then a 12-month guarantee.
Do you take on multi-site work?
Yes. Several buildings can share a single quote, and you deal with one contact throughout across South East England, Greater London and Scotland.
How long does a job like this take?
It depends on the scope, but the work usually takes as long as the agreed sequence needs, which comes down to joint lengths, access and handover dates. Larger or phased jobs take longer, and we’ll give you a timescale with the quote.
What’s the quickest route to a quote?
It works in four steps: send details, get a quote, we seal, guaranteed. Step one needs little more than photographs and a postcode.
Diagnose, treat, sign off
We bring the products specified for the job, along with primers and backing rod. Any old material is cut back to clean, sound faces, primer goes on where the manufacturer specifies it, and the sealant is tooled off neatly. If neighbouring businesses or buildings around Stone need work too, visits can be combined. Mention the building’s opening times and we’ll work within them.
- We walk the site or review drawings to understand the package.
- You receive a fixed quote covering scope, products and sequence.
- Site paperwork is confirmed and our CSCS-carded applicators are inducted.
- Sealing follows the programme as areas are released.
- Any frame gaps or issues outside our scope are flagged to the site team.
- Final snagging is completed and the 12-month guarantee applies.
Before we start on site
- Agree which areas must stay open
- Move anything stored against the joints
- Tell staff and tenants when we’ll be in
Get a fixed quote
Every quote starts with the facts: what’s there, how much of it, how we reach it and what’s specified. Send what you have, and we will arrange a site visit if anything is unclear.
Advice
For managing agents and facilities managers
CHAS accredited and a Constructionline member, we are straightforward to vet for your supplier list. We’re fully insured, and our insurance certificate can go with the quote.
Main contractors use us as their sealant subcontractor, on new build and refurbishment alike. Programme, specification and site rules come first, and our applicators hold CSCS cards.
Building and refurbishing in Stone
Central London is about 16 miles from Stone. Towns within reach of London tend to keep building, from flats to offices and schools, so mastic packages have to keep pace with busy programmes. Stone is in the South East, one of the UK’s drier regions. Winter mornings still bring frost and condensation on frames and panels, so we time external mastic for dry faces and agree it with the site team.
Hotels like Campanile Hotel (to the north-west of Stone) rarely close for long, so refurbishment mastic is phased floor by floor. On a healthcare site such as Darent Valley Hospital (1 mile south-west of Stone), new blocks and refurbishments go on while the hospital keeps running, so mastic work is sequenced carefully. When units on a site such as Bluewater Shopping Centre (less than half a mile south of Stone) are refurbished or reclad, the panel joints and window perimeters are part of the mastic package.
Stone is about 2 miles east of Dartford, in Kent. Any commercial site in Stone is covered, whether it’s a single job or part of a planned programme. Across Kent, 931 places are covered, Stone among them. London is covered too, around 16 miles from Stone.
If you need construction mastic in DA9, the process matches everywhere else we work: details, then a fixed price, then sealing and a 12-month guarantee. If your site is on Church Road, Perkins Close and Richardson Close or close by, we can quote for mastic packages. You will find Stone on or near the A296. Sites close to Stone are covered too, including Greenhithe (1 mile north-east), Swanscombe (1 mile east), Bean (2 miles south-east), Darenth (2 miles south) and Temple Hill (2 miles west). A short drive away, we cover Sevenoaks (12 miles south), Gravesend (5 miles east), Northfleet (3 miles east), Swanley (5 miles south-west), Kings Hill (13 miles south-east) and Windmill Hill (4 miles east).
What’s near Stone
Recent enquiries here include premises near Darenth Country Park, The White Hart Public House and Stone Lodge School and the streets around them. Stone’s nearest station is Stone Crossing station, about 0.5 miles north-west. Well-known places in the area include Stone Museum of Geology (1.3 miles west) and Darent Valley Hospital (1 mile south-west). Not far away are Chafford Gorges Nature Park and Sawyers Lake.
General trades versus a specialist
For a quick touch-up, site staff may be fine, but anything bigger is another matter: a specialist works through quantities efficiently, leaves a consistent finish and backs it with a 12-month guarantee.
For most general trades, sealant is a sideline. A specialist brings correct preparation, depth control with backing rod and a product suited to that particular joint.