Facade and window perimeter sealing in Capstone, Medway
Facade joint and window perimeter sealing on commercial buildings in Capstone and across Medway. CHAS accredited and fully insured, with a 12-month guarantee.
- New sealant peeling off old mastic
- Failed sealant on precast panel joints
- Water coming in around window frames
Facade sealing for businesses in Capstone
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
Surface by surface
Cladding panel joints
Where panels are sealed rather than open-jointed, the bead is part of the weather line. We cut out failed joints along their full length and rebuild them to the correct depth.
Precast concrete panels
Precast arrises sometimes crumble or carry old residue. We clean back to sound material and flag edges that need repair before sealing.
Facade sealing in Capstone
We don’t install glazing systems or replace glass. What we seal are the joints around them: perimeter joints where frames meet the structure, panel joints and window perimeters with products suited to facade or glazing perimeter joints. If you have weathered joints at frame-to-structure perimeters and new sealant peeling off old mastic, we can put it right, on shopfront frames, stone and brick facade joints and cladding panel joints alike. Searching for sealant specialists in Capstone? We’ve been sealing commercial buildings since 2005, CHAS accredited and a Constructionline member.
Around smaller places like Capstone, 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 workmanship is guaranteed for 12 months, in Capstone as everywhere else we work. If our installation lets you down in that time, we return and fix it.
- Where
- Capstone (ME7)
- Wider area
- Medway
- Guarantee
- 12 months on our workmanship
- Quotes
- Quoted before any work starts
- Telephone
- 01277 525 020
- Updated
- 3 November 2026
Sites and facades in and around Capstone
Capstone is within about 3 miles of the coast. Facades and window perimeters on coastal schemes take more wind-driven rain, and salt air nearer the shore, so we check the specified product suits the exposure before the first bead. At about 30 miles from central London, Capstone is within reach of the capital. Towns within reach of London tend to keep building, from flats to offices and schools, and each scheme needs its mastic sealed to programme.
Projects at schools like Hempstead Infant School work to term dates, so mastic is programmed tightly. For contractors on a campus like University for the Creative Arts - Rochester, which lies north-west of Capstone, facade and perimeter sealing has to fit around students and term dates. When units on a site such as Gillingham Business Park (0.8 miles north-east of Capstone) are refurbished or reclad, the panel joints and window perimeters are part of the mastic package.
Capstone is about 1 mile south-west of Gillingham, in Medway. Commercial clients in Capstone can call on us for facade joints. Our Medway coverage takes in 54 places, large and small. Sites around London have their own page, roughly 30 miles from Capstone.
If you need facade sealing in ME7, the process matches everywhere else we work: details, then a fixed price, then sealing and a 12-month guarantee. We also cover Darland (1 mile north), Hale (1 mile north-west), Hempstead (1 mile south-east), Gillingham (1 mile north-east) and Chatham (1 mile west) for facade joints. Further afield, our area takes in Rochester (4 miles north-west), Strood (4 miles north-west), Hoo St Werburgh (5 miles north), Rochester Riverside (3 miles north-west), Brompton (3 miles north-west) and Frindsbury (4 miles north-west).
Local landmarks in Capstone
In Capstone, that means premises near Chatham Grammar School for Girls, The Star pub and The Robert Napier School, among other places. The nearest railway station is Gillingham (Kent) station, about 2 miles north. Other landmarks nearby include Medway Maritime Hospital (1.7 miles north-west) and Pentagon Shopping Centre (2.3 miles north-west). Green spaces nearby include Burham Down and Blue Bell Hill.
Our process
Where the site stays busy, the work is phased so only one area is out of use at a time. Each section is protected, cleaned back and sealed, then handed back before the next one starts. If others near Capstone need work, visits can be combined, which keeps travel down. A fixed quote is given before anything starts.
- Access, site rules and timing are settled with the client up front.
- We only seal when joints are dry and within the product’s temperature range.
- Each joint is cut out and the edges inspected.
- Faces are cleaned, primed where needed and backed.
- Facade-grade sealant goes in and is tooled to a tidy concave profile.
- Once signed off, the work carries our 12-month guarantee.
Preparing the site
- Send your site hours and access windows
- For older buildings, check the asbestos register before work
- Have the specification and drawings to hand
Get a fixed quote
Send us photos, drawings or a joint schedule are often enough for a fixed quote. Where a site visit makes more sense, we will arrange one.
Related advice
What affects the price in Capstone
Your fixed quote is built from the real scope. It allows for:
- Access and working height
- Distance, for remote addresses
- How much existing material needs removing
- Induction, permit and paperwork requirements
Access can matter as much as the joints themselves: easy-to-reach joints are quicker than those that need equipment to get to. Tell us how the joints are reached and call for a quote.
Sending details for a quote
It doesn’t need to be a full survey. These details are enough to start:
- Access details, including height
- Your programme or deadline
- Photos of the joints, close up and from further back
- The asbestos register, for older buildings
Specifications, drawings and tender packages are welcome with any enquiry, and we will price the work to it. For smaller jobs, photographs and a description will do.
Keeping the joints sound
For the best life from the joints:
- Insist on a full cut-out when joints are renewed
- Confirm the survey covers external sealants in older buildings
- Brief window cleaners about newly sealed joints
- Record the product and colour used on each elevation
Hold back any cleaning crew until the joints have had their stated cure time. Keep high-pressure jets and strong chemicals away from new sealant, so brief your window cleaners.
Planned resealing is cheaper than reacting to leaks. Inspect regularly and reseal sections as they start to fail, rather than waiting for a ceiling stain.
More services for Capstone
Why it’s worth doing now in Capstone
Topping up a failed joint typically buys very little time. A full cut-out and fresh bead is the repair that holds, so you aren’t paying for the same joint twice. One visit to deal with every failing joint makes more sense than several trips to a place like Capstone, rather than one at a time. Photos of every joint help us quote for the whole job.
A quote for facade joints depends on quantities, condition and access, and any specification that applies. Ask us for a fixed quote.
Why appoint us
- Old sealant cut out, never sealed over
- Specification-led, product-correct work
- Standard and matched colours in many product ranges
- Fully insured
Take a look at what affects the cost and our accreditations.
FAQs: Capstone
Do you take on work at healthcare sites like Medway Maritime Hospital?
Yes, provided the work is planned with the site’s estates team. Each area is agreed with the ward or department and the estates team in advance.
Does your area include sites such as Gillingham Business Park, near Capstone?
Yes. Our area takes in Capstone and its surroundings, with estates and business parks such as Gillingham Business Park included. A few photos and the unit address let us price the work.
Do we need an asbestos check before resealing?
In older non-domestic buildings, old sealant can contain asbestos. The dutyholder’s asbestos register should be checked first, and if anything is suspected, we stop until it’s tested. We don’t remove asbestos-containing materials.
How long do sealant joints last?
It depends on movement, UV and weather, cleaning, traffic and the product. Treat them as maintenance items and inspect them regularly.
Can you find out why a window is leaking?
Yes. We check the sealant joints and report what we find. Where the cause seems to be elsewhere, we’d rather tell you than reseal pointlessly.
How long before the joints can be used?
The product and site conditions decide that. Some take light use quickly, others need longer to cure, and we confirm it before leaving site.
Does the weather affect the work?
For external joints, yes. Sealant needs a dry joint and a temperature within the product’s range, so damp, frosty or very cold days can stop external work. Internal work is rarely affected.
When to bring in a specialist
A short, simple internal joint is often within reach of a maintenance team. The usual problems come from preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.
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.