Construction and new-build mastic in Borough Green, Kent
Planning work on a mastic package in Borough Green? We assess it, carry out the work and guarantee our workmanship for 12 months.
- A long mastic snag list close to completion
- Window and door perimeters that won’t pass inspection
- Frame gaps too wide for sealant alone
Construction mastic for Borough Green sites
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
How the job changes by surface
Snagging before handover
Snagging is often the final mastic stage. We can work through the snag list area by area, cutting out damaged joints and resealing them properly.
Window and door perimeters
A frame gap that’s too wide can’t just be filled with sealant. Gaps outside the product’s range are raised with the site team.
Construction mastic for commercial buildings in Borough Green
Getting a subcontractor through site induction should be simple. Our applicators are CSCS-carded, and we are CHAS accredited and a Constructionline member, with public liability insurance in place. Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we’ll confirm with the quote. If you’re dealing with cracks opening in caulked internal joints and a mastic package split between trades with no clear owner, we can help. Most enquiries from Borough Green 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.
Conversions around smaller places like Borough Green often join new frames to old masonry or timber, which leaves joints between old walls and new frames that need a sealant able to take the movement.
Guaranteed is the last step of every job. You get a 12-month guarantee on our workmanship, and we explain exactly what that covers when we quote.
- Place
- Borough Green (TN15)
- Region
- Kent
- Guarantee
- A 12-month guarantee
- Price
- Quoted before any work starts
- Call
- 01277 525 020
- Page updated
- 3 November 2026
Signs you need construction mastic in Borough Green
Shrinkage and settlement in the first months put new joints under strain. Plaster, screeds, timber and blockwork all shrink as they lose moisture, which opens up internal joints, particularly where caulk has been used in a joint that moves. Choosing the right product for each joint reduces that.
Look out for the following:
- Inconsistent sealant finishes from plot to plot
- Internal caulk splitting as the building dries out
- Existing joints on a refurb that need cutting out and resealing
- Perimeter gaps outside the sealant’s range
Work at a hotel such as The Bull Hotel (to the north of Borough Green) tends to be programmed around bookings, mastic included.
What to look for in a quote
- Whether primer will be used where the manufacturer specifies it
- Their public liability cover
- Can the work be phased to keep areas open?
- The named product and why it was chosen
What happens if it’s left?
A quick bead over a damaged joint can get an area past inspection, but it won’t last. New sealant laid on old or dirty sealant has nothing to bond to, and the defect comes back after handover. Damaged joints are removed and resealed from clean faces. Sealant hardens, cracks and loses grip with age, UV and movement. Renewing it in good time keeps the building weathertight.
We don’t publish prices, since every building and every scope is different. For a fixed figure, call for a quote and we will price your job on its own details.
Why appoint us
- CHAS accredited
- Our applicators hold CSCS cards
- RAL and finish matching where the product range allows
- Standard and matched colours in many product ranges
Take a look at how commercial sealant jobs are priced or how we’re accredited.
Looking after the joints
Sealant joints are maintenance items, and their life depends on movement, exposure, cleaning and use. We suggest:
- Allow flexibility for external sealing in damp or cold weather
- Check frame gaps are within the sealant’s range before sealing
- Ask cleaners to use soft cloths around fresh sealant
- Release areas for mastic once other trades have finished in them
Our 12-month guarantee covers the workmanship from sign-off. The guarantee covers how we sealed, not later damage by other trades.
Snag items left to the last week put handover at risk. A planned close-out through each area as it completes keeps the list short and keeps handover on track.
Also near Borough Green
Other services in Borough Green
Construction mastic in Borough Green: the local picture
Borough Green lies roughly 23 miles out from central London. 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 area within 2 miles of Borough Green holds several hotels. Hotel extensions and refits normally have to fit around bookings, so mastic dates are tight.
Extensions at sites like Sevenoaks Hospital, 4.9 miles west of Borough Green, usually sit beside working departments, and the mastic follows strict access rules. With historic properties like Old Soar Manor (2.1 miles south of Borough Green) in the area, refurbishment work often meets old masonry that needs compatible sealants.
Borough Green is about 5 miles east of Sevenoaks, in Kent. We cover commercial sites throughout Borough Green, whether it’s a single job or part of a planned programme. Borough Green is one of 931 places we cover in Kent. London is covered too, some 23 miles away.
We take on mastic packages across the TN15 postcode area, for business premises of every kind. Among the streets we cover are Station Road, High Street and Hill View. If your building is just outside Borough Green, we cover Basted (1 mile south), Platt (1 mile east), Crouch (1 mile south), Claygate Cross (1 mile south) and Comp (1 mile east). A short drive away, we cover Maidstone (10 miles east), Dartford (11 miles north), Sevenoaks (5 miles west), Royal Tunbridge Wells (11 miles south), Gravesend (10 miles north) and Tonbridge (7 miles south).
Local landmarks in Borough Green
Recent enquiries here include premises near Wrotham School, Red Lion Public House and Wrotham School. Borough Green has its own railway station: Borough Green & Wrotham station. Other landmarks nearby include Ightham Court (0.9 miles west) and Sevenoaks Hospital (4.9 miles west).
From enquiry to sign-off
On arrival, we sign in, go through any site induction and check how permits are handled. Floors, finishes and fittings next to the joints are covered before anything is cut or cleaned, and the work usually takes anything from a day of snagging to several weeks of plot-by-plot sealing on a phased scheme. For a job in Borough Green, the main thing is a clear picture of the work, so send photographs of each area. A fixed quote follows.
- We start with the drawings, specification and programme.
- We take off quantities and return a fixed quote.
- The sequence is agreed with the site manager.
- Plots or floors are sealed as they’re handed over.
- Every joint is cleaned, set to depth and sealed with the specified product.
- After snagging, the work is handed over under our 12-month guarantee.
Before we start on site
- Warn occupants and staff about the work
- Send asbestos survey details if the building is pre-2000
- Agree which areas must stay open
Getting a fixed quote
Tell us about the building, the joints and when you need the work done, and a fixed quote will follow. The easiest way is to call the office on 01277 525 020 or email a schedule or drawings.
Related advice
Work for main contractors and building owners
Agents, factors and owners’ representatives all follow the same route: send details, get a fixed quote, we seal, guaranteed. Keys, access and contacts can be agreed in advance.
CHAS accredited and a Constructionline member, we make supplier vetting simple. Our insurance certificate can be sent along with the quote.
Borough Green: questions and answers
Is Borough Green too small for you to travel to?
Not at all: smaller places are covered as well as towns. We work across Greater London and the South East. Where we can, we group nearby jobs to make the most of each trip.
Can you take on a job at a hospital such as Sevenoaks Hospital?
Yes. Healthcare sites are among the places we work. Before anything starts, the estates team agrees permits, inductions and infection-control measures with us.
When can you be on site?
Mention the site’s hours and access windows in your enquiry, and we will schedule the work to suit. Our office runs Monday to Friday, 8am until 5pm.
Will you just go over the old sealant?
No. Overlaying old sealant is a frequent cause of early failure, so it all comes out first.
Do you install fire-rated sealant as part of a package?
Where it’s specified, yes to the tested detail. If the detail calls for collars, wraps or batts instead, we’ll tell you.
How do you deal with asbestos in old sealant?
The duty to manage asbestos sits with the building’s dutyholder, so for older buildings we ask for the asbestos register first. If anything suspect turns up, we stop until it’s tested.
What joints do you seal on a new build?
External perimeters and movement joints, internal caulking where specified, sanitary and kitchen joints, plus snagging.