Mastic contractors in Borstal
Our CSCS-carded applicators take on mastic packages for new-build and refurbishment projects in Borstal. Send photos or drawings for a fixed quote.
- Sanitary sealant damaged by following trades
- Existing joints on a refurb that need cutting out and resealing
- Frame gaps too wide for sealant alone
Construction mastic across Borstal
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
When to bring in a specialist
Putting right a botched joint often costs more than sealing it well at the start, since all of it has to come out and the faces be cleaned back again. For that reason, many FMs and contractors use a sealant specialist from the outset.
Paperwork matters too. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and our CSCS-carded applicators are used to working under those rules.
Construction mastic in Borstal, done properly
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. That keeps the work right first time and saves rework. We work on floor and skirting junctions, sanitary and kitchen joints and internal decorators’ caulk, and what we’re called in for most is inconsistent sealant finishes from plot to plot and external joints sealed in damp or cold conditions that are now failing. One point of contact handles commercial sealant work in Borstal from the first photos to the final walk-round, whether it’s one building or several.
Building work in places the size of Borstal is usually small-scale: a handful of new houses, barn conversions, a school or hall extension. Even a small site needs its perimeter and facade joints sized, backed and sealed properly.
Guaranteed is the last step of every job. Our workmanship is backed for 12 months, and we explain exactly what that covers when we quote.
- Location
- Borstal (ME1, ME2)
- Region
- Medway
- Guarantee
- A 12-month guarantee
- Quote
- A fixed quote before we start
- Telephone
- 01277 525 020
- Last updated
- 3 November 2026
Your questions answered
Is Borstal too small for you to travel to?
No. Small places get the same service as large ones. We cover Greater London and the counties of the South East. Good photographs up front let us bring everything on the first visit.
Can you work at a site such as Strood Retail Park, by Borstal?
Yes, sites like Strood Retail Park are within our area, along with the rest of Borstal. A few photos and the unit address let us price the work.
What guarantee comes with a mastic package?
Our workmanship carries a 12-month guarantee from sign-off. The guarantee covers our work, not later damage by other trades.
How do we ask for a quote?
It works in four steps: send details, receive a fixed quote, we carry out the work, and it’s guaranteed. The first step only needs photographs and a postcode.
Can the sealant be colour-matched?
It depends on the product specified. Some ranges are wide, others limited, so the available colours are confirmed with the quote.
What happens if the weather stops external sealing?
External sealing goes ahead only with a dry joint inside the product’s temperature range. Wet or cold joints cause adhesion problems, so we wait rather than redo work.
How do you deal with asbestos in old sealant?
Managing asbestos is the dutyholder’s responsibility, so for older buildings we ask for the asbestos register first. If anything suspect turns up, we stop until it’s tested.
What the job involves on each surface
Window and door perimeters
Perimeter joints between frames and the structure are the weather line on any new building. They’re sealed with a low-modulus neutral-cure silicone or another product named in the specification.
Internal decorators’ caulk
Acrylic caulk fills internal gaps around trims, boards and frames ahead of decorating. It’s paintable and suits gaps that don’t move, and we use a flexible sealant where there’s movement.
Common problems we fix in Borstal
Dust is the enemy of adhesion on a construction site. Dust, film adhesive, damp and grease on the joint faces prevent a proper bond.
Typical triggers for a call:
- Missed perimeter joints on a new elevation
- Cracks opening in caulked internal joints
- Existing joints on a refurb that need cutting out and resealing
- Snag items on joints that need redoing before handover
For a contractor working at a hospital such as Medway Maritime Hospital (2.4 miles east of Borstal), perimeter and facade sealing is planned around patients and deliveries.
Comparing quotes
- Is depth set with backing rod, or bond-breaker tape in shallow joints?
- How the existing material will be dealt with
- The named product and why it was chosen
- How they handle RAMS and site documents
After the work
Problems stay small when the joints are checked regularly. In particular:
- Use the product the specification names
- Allow flexibility for external sealing in damp or cold weather
- Share drawings and the specification as soon as possible
- Bring the mastic contractor in after the last trades are through
Once an area is sealed, protect it from following trades. Fresh sealant needs its cure time before it’s cleaned, painted near or knocked; we confirm the time for each product.
One unsealed frame can let water into finished internal areas. On a new building that means remedial work after decorating. Checking perimeters before internal finishes go on avoids it.
Contractors’ notes for Borstal
The area within 2 miles of Borstal holds a good number of hotels. When hotels extend or refit, the work is usually squeezed between peak periods, mastic included. The South East is one of the drier parts of the UK. Still, external mastic needs dry faces within the maker’s temperature limits, which isn’t every day, so external mastic is timed for workable conditions and agreed with the site manager.
New units and refits on sites such as Strood Retail Park, 1.4 miles north of Borstal, need their panel and perimeter joints sealed to the specification. Further education sites such as MidKent College Gillingham Campus, 2.8 miles to the north-east of Borstal, are extended and refurbished from time to time, with mastic often programmed into the summer break.
Borstal is about 1 mile south-west of Rochester, in Medway. Any commercial site in Borstal is covered. Our Medway coverage takes in 54 places. Our London page has more on work in that area (26 miles or so).
Postcode districts covered here: ME1 and ME2. Among the streets we cover are Hill Road, Manor Lane and Mount Road. Main routes into Borstal include the M2, which helps when planning parking and deliveries for the job. Sites close to Borstal are covered too, including Rochester (1 mile north-east), Strood (1 mile north), Cuxton (1 mile west), North Halling (2 miles west) and Wouldham (2 miles south-west). Bigger towns within reach include Gillingham (4 miles east), Rainham (5 miles east), Park Wood (5 miles east), Lordswood (4 miles south-east), Twydall (4 miles east) and Hoo St Werburgh (5 miles north-east).
Landmarks near Borstal
In Borstal, that means premises near Sir Joseph Williamson's Mathematical School, Former Ordnance Store At Chatham Gun Wharf and St John Fisher RC Comprehensive School. The closest station to Borstal is Cuxton station, about 1 mile west of the centre. A little further out are Six Poor Travellers House (1.3 miles north-east) and Rochester Castle (1.3 miles north-east). Not far away are Blue Bell Hill and Ranscombe Farm.
Also near Borstal
Also in Borstal
When it isn’t the sealant
Some faults sit outside our scope, and we say so rather than covering them up:
- Faulty frames rather than failed sealant
- Designing joint widths or choosing the specification (that sits with the designer)
- Approving fire stopping as compliant
Not sure which it is? You can call the office on 01277 525 020 or email the details over and we’ll tell you honestly.
Where we work in Borstal
- Sanitary and kitchen joints
- Cladding and panel joints
- Floor and skirting junctions
- Brick and block movement joints
- Window and door perimeters
- Internal decorators’ caulk
From enquiry to sign-off
Occupied buildings need a little choreography. The work area is signed and kept contained, keep walkways clear and move on in phases so staff and visitors can carry on around us. For a job in Borstal, the main thing is a clear picture of the work. A fixed quote follows.
- First we take quantities off the drawings and read through the specification.
- You receive a fixed quote listing scope, products and phasing.
- You tell us what site paperwork you need, such as RAMS, an insurance certificate or CSCS details, and we confirm it with the quote.
- We seal each plot or floor as it’s released to us.
- Each joint is prepared, backed to depth and sealed in the product the specification names.
- Before handover, snags are dealt with and the package is signed off under our 12-month guarantee.
What we need from you
- Tell us what induction or permit system the site runs
- Send your site hours and access windows
- Tell staff and tenants when we’ll be in
Getting a fixed quote
Every job follows the same four steps: send details, get a quote, we seal, guaranteed. The first step is to phone 01277 525 020 or send details through our quote form with what you know.