Construction and new-build mastic in Dunn Street, Kent
Our CSCS-carded applicators take on mastic packages for new-build and refurbishment projects in Dunn Street and the surrounding area. Send details for a fixed quote.
- Existing joints on a refurb that need cutting out and resealing
- Oversized or tapered gaps around new frames
- External joints sealed in damp or cold conditions that are now failing
Construction mastic near Dunn Street
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Honest limits
We seal joints; we don’t mend everything behind them. Sealant alone won’t deal with:
- Designing joint widths or choosing the specification (that sits with the designer)
- Frames fitted out of tolerance
- Defective windows, doors or glazing units (the supplier or installer’s job)
Not sure which it is? You can call 01277 525 020 or email the details over and we’ll tell you honestly before you book.
What we seal
- Sanitary and kitchen joints
- Internal decorators’ caulk
- Brick and block movement joints
- Floor and skirting junctions
- Window and door perimeters
- Cladding and panel joints
About our construction mastic in Dunn Street
Since 2005 we have worked alongside main contractors, developers and fit-out firms. Quantities come off the drawings, the sequence is agreed with the site manager and the work follows the trades. To price a package in Dunn Street, send drawings and the specification through our quote form. If you have sanitary sealant damaged by following trades and missed perimeter joints on a new elevation, we can help, whatever the surface. Most enquiries from Dunn Street 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.
Construction in and around smaller places such as Dunn Street is often barn conversions, small groups of houses or extensions to halls and schools. Perimeters, facade joints and internal sealant all need doing properly, however small the scheme.
We stand by our work with a 12-month guarantee. It covers how we prepared and applied the sealant.
- Location
- Dunn Street (ME7)
- Wider area
- Kent
- Cover
- 12 months on every job
- Quote
- Fixed quote, scope in writing
- Telephone
- 01277 525 020
- Page updated
- 3 November 2026
New build and refits around Dunn Street
Dunn Street sits in one of the drier corners of the country, the South East. That doesn’t stop wet spells, or frosty starts that leave panels too damp to seal, so external mastic is timed for workable conditions and agreed with the site manager. Central London is about 31 miles from Dunn Street. Construction around the commuter belt mixes station-side flats with refurbished offices and units, and main contractors there need mastic that keeps to the programme.
School extensions, at buildings such as Swingate Primary School, typically run to the summer holidays, mastic included. For contractors on a campus like University for the Creative Arts - Rochester (4.4 miles north-west of Dunn Street), facade and perimeter sealing has to fit around students and term dates. Hospital estates such as Spire Alexandra Hospital, 1.9 miles west of Dunn Street, tend to grow and change in phases, often next to occupied wards, so facade and perimeter sealing has to fit the estates team’s plan.
Dunn Street is about 3 miles south-east of Chatham, in Kent. Businesses, contractors and managing agents in Dunn Street use us for work on mastic packages. 931 places across Kent fall within our area, Dunn Street among them. There’s a separate page for London, about 31 miles away.
Commercial sites across ME7 are covered for mastic packages. Nearby places we also cover include Lidsing (1 mile north-west), Bredhurst (1 mile north-east), Scragged Oak (1 mile south-east), Kemsley Street (1 mile north-east) and Lower Cox Street (1 mile south-east) for mastic packages. Bigger towns within reach include Maidstone (5 miles south-west), Sittingbourne (7 miles east), Gravesend (11 miles north-west), Tonbridge (15 miles south-west), Faversham (14 miles east) and Northfleet (12 miles north-west).
What’s near Dunn Street
In Dunn Street, that means premises near South Wood and The Harrow pub, among other places. For rail, the closest station is Rainham (Kent) station, roughly 3.3 miles north-east of the centre. Other landmarks nearby include Medway megaliths (3.1 miles west) and KIMS hospital (2.8 miles south). The countryside around Dunn Street includes Burham Down and Boxley Hills.
Quoting for work in Dunn Street
Quotes vary with the job. Expect it to depend on:
- Whether the work must be split into stages
- How much existing material needs removing
- The site’s rules and procedures
- Any access equipment needed
Every site prices differently: the joint sizes, the specified product, access and working hours each have a bearing. A fixed quote follows once we understand the job.
Details that help us quote
Diagnosis starts before we arrive. Let us know:
- Your programme or deadline
- How the joints are reached, and at what height
- The postcode of the building
- What the building is and how it’s used
Need a figure for a tender or a budget? We’ll quote against your scope and drawings that you can work with. For a chat about it beforehand, phone 01277 525 020 or email drawings and photos.
Commercial clients in Dunn Street
Housing associations and managing agents often need work done across blocks and communal areas. We phase the work so people keep access, and each stage is agreed with your contact.
We take on planned maintenance as well as one-off repairs: resealing failed joints building by building, on a schedule that suits your budget. Sites in Dunn Street can sit alongside others in a wider programme across Kent.
Also near Dunn Street
Other services in Dunn Street
From enquiry to sign-off
Working in a building that stays open takes some planning. We sign and contain the area we are in, with routes through the building left open and work section by section so the rest of the building stays in use. Jobs in and around smaller places like Dunn Street are normally planned as a single visit, so photographs and measurements up front really help. That way the right products come on the day.
- We walk the site or review drawings to understand the package.
- You receive a fixed quote covering scope, products and sequence.
- Paperwork is agreed and applicators are inducted on site.
- Sealing follows the programme as areas are released.
- Any frame gaps or issues outside our scope are flagged to the site team.
- The package is closed out, snags cleared and backed by our 12-month guarantee.
Before we start on site
- Confirm the product named in the specification
- Send asbestos survey details if the building is pre-2000
- Move anything stored against the joints
Quotes
We quote a fixed sum against the scope you give us, so the cost is agreed before work starts. To ask for one, give us a call on 01277 525 020 or send photos by email.
Related advice
What happens if it’s left?
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 and external joints are where it shows first. Where an alternative is genuinely suitable, we will say so. Around Dunn Street, it’s better to renew all the failing joints at once. Photos of every joint help us quote for the whole job.
Quantities, awkward access and phased working all shape the price. Site requirements like inductions and permits play a part as well, along with the time of year for external work.
Why appoint us
- Public liability insurance in place
- One phone line for London, the South East and Scotland
- RAL and finish matching where the product range allows
- A Constructionline member, so easy to vet
Take a look at what affects the cost and our accreditations and insurance.
Doing it in-house
Using site staff can make sense for a small touch-up, but larger jobs are different: a specialist brings efficiency, a consistent finish and a 12-month guarantee.
Some joints are best left to specialists: fire-rated seals that must follow a tested detail, trafficked floor joints and external movement joints among them. Getting these wrong normally costs more in the end than doing them right.
FAQs: Dunn Street
Is Hempstead Valley Shopping Centre, near Dunn Street, within your area?
Yes. Our area takes in Dunn Street and its surroundings, with estates and business parks such as Hempstead Valley Shopping Centre included. A few photos and the unit address let us price the work.
Do you take on work at healthcare sites like Spire Alexandra Hospital?
Yes, provided the work is planned with the site’s estates team. We follow the site’s permits, sign-in and infection-control procedures in every area.
Do you do fire-rated sealing on new builds?
Where it’s specified, yes. We will flag if the detail needs a different product.
How long do sealant joints last?
It depends on movement, UV and weather, cleaning, traffic and the product. Sealant joints are maintenance items, so inspect them regularly.
What does a mastic package usually include?
External perimeters and movement joints, internal caulking where specified, sanitary and kitchen joints, plus snagging.
Can you seal external joints in wet or cold weather?
External sealant needs a dry joint and a temperature within the product’s range. Damp, frost or condensation on frames can stop work so we typically switch to internal work when that happens.
How long before the joints can be used?
We’ll confirm how long the chosen product needs to cure.