Dunn Street mastic sealing
Mastic sealing for building owners, managing agents and housing associations in Dunn Street and across Kent. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.
- Worn sealant at communal door frames
- Draught complaints from residents or tenants
- Complaints coming in block by block
Mastic sealing for Dunn Street sites
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
When something else is needed
Not every problem is a sealant problem, and we are upfront when that’s the case. These need a different solution:
- Materials that need asbestos testing before work
- Broken glass or failed sealed units
- Frames that are rotten, warped or broken
If in doubt, call the office on 01277 525 020 or email the details over and we’ll say what we think before you book.
Where we work in Dunn Street
- External wall and movement joints
- Shopfronts below residential blocks
- Communal kitchens and washrooms
- Balcony and threshold joints
- Communal entrances and stairwells
- Window and door perimeters on blocks
Mastic sealing for commercial buildings in Dunn Street
Older blocks and commercial buildings can have mastic that contains asbestos. We check the asbestos register or survey before any old sealant is cut out, and work stops for testing if there’s any doubt. Removing asbestos-containing material isn’t something we do. If you are dealing with occupiers reporting cold air round windows and water getting in round frames after rain, we can help, on communal kitchens and washrooms, communal entrances and stairwells and balcony and threshold joints alike. For commercial sealant work in Dunn Street, you deal with one contact from quote to sign-off, for single jobs and planned programmes alike.
For owners with a single building near Dunn Street, we plan to finish in one visit where possible. Photos of each elevation help us quote accurately.
We stand by our work: 12 months, guaranteed. It covers how we prepared and applied the sealant, and if something we did falls short, we return to it.
- Place
- Dunn Street (ME7)
- Wider area
- Kent
- Cover
- A 12-month guarantee
- Price
- A fixed quote before we start
- Call
- 01277 525 020
- Page updated
- 3 November 2026
How a job runs
Before we leave any area, we remove the tape, clean down and inspect every joint, ready for your sign-off. If an area should be left alone while the sealant cures, we say how long and put signs out. Rural sites near Dunn Street may need directions, gate codes or a contact on site. Add it to your enquiry and we will build it into the plan.
- We inspect each building and record the joints that have failed.
- The quote is fixed and split as suits you.
- Dates and areas are agreed so occupiers can be told.
- Failed sealant is removed and the faces prepared.
- Joints are resealed and tooled.
- Each building is checked and signed off with the 12-month guarantee.
What we need from you
- Make sure the joints can be reached
- Warn occupants and staff about the work
- Have the specification and drawings to hand
Quotes
Send us photos, drawings or a joint schedule and a fixed quote comes back to you. If the job needs a look first, we will arrange a site visit.
Related advice
Towns and villages near Dunn Street
What else we do in Dunn Street
Common problems we fix in Dunn Street
The edges of the material itself sometimes break away, such as crumbling render, brick arrises or frame edges. If the edges are unsound, we say so before quoting the sealing.
Common reasons buildings call us in:
- Draught complaints from residents or tenants
- Brittle perimeter mastic across a building
- Damp patches beside frames
- Complaints coming in block by block
Student blocks close to universities like University for the Creative Arts - Rochester (4.4 miles north-west of Dunn Street) are easiest to work on between tenancies.
What to look for in a quote
- Their public liability cover
- Is the sealant right for the movement and the substrate?
- Will CSCS-carded applicators be on site?
- Are they CHAS accredited or on Constructionline?
What sets the cost
Before we quote, we look at:
- Backing rod, priming and other preparation
- Removal of failed or old sealant
- Phasing around occupants
- The total length or number of joints
There’s no price list, because the scope varies so much from one building to the next. For a fixed figure, call for a quote and we will price your job on its own details.
Before you send an enquiry
A few photos plus some basic facts will normally do. It helps to include:
- Whether the building will be occupied during the work
- The product your specification calls for
- Where the site is, with the postcode
- Photos of the joints, close up and from further back
For a fixed quote, call the office on 01277 525 020 or email a schedule or drawings with the site address and an outline of the work. Our quote form is another easy route.
Your questions answered
Is Dunn Street off your patch?
No. Places such as Dunn Street are covered as much as the big towns. We work across Greater London and the South East. Good photographs up front let us bring everything on the first visit.
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.
How many days will you need on site?
The duration is planned around your programme and the access we are given. We will give you an estimate of time on site when we quote.
What guarantee do you give on resealing?
Our workmanship carries a 12-month guarantee, backed by public liability insurance.
When can the area be used after sealing?
Curing time varies by product, and we confirm it on the day, and flag anything to keep off until it has cured.
Does weather matter for sealant work?
Outside, yes. The joint has to be dry and within the product’s temperature range, so frost, rain or cold mornings can delay outside work. Inside work is seldom held up.
Will you come and look before quoting?
That depends on the size and complexity of the job. Straightforward work can often be priced from photographs and measurements, and bigger or more complex jobs normally get a visit.
Commercial clients in Dunn Street
For main contractors, we work as the sealant subcontractor, on new build and refurbishment alike. We work to your programme, your specification and your site rules, and our applicators hold CSCS cards.
When you manage a building on behalf of an owner, clear figures and clear communication matter. We quote a fixed sum, confirm the scope and walk the finished work with you or your representative, plus a 12-month guarantee.
Frames, entrances and external joints in Dunn Street
Dunn Street is in the South East, one of the UK’s drier regions. Outside work still depends on dry joints, and elevations facing the sun and the prevailing weather are typically where frame mastic ages first. Dunn Street is about 31 miles from central London. Commuter-belt towns tend to have plenty of managed blocks near stations and town centres.
For owners of several units at places like Hempstead Valley Shopping Centre (1.1 miles north of Dunn Street), one programme can deal with frame and external mastic across the lot. Older community buildings, Church of St Peter among them, often have frames of mixed ages whose mastic varies.
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 joints, as part of our coverage of Kent. Dunn Street is one of 931 places we cover in Kent for mastic joints. Sites around London have their own page, roughly 31 miles from Dunn Street.
Business premises anywhere in ME7 are within our area. Just outside Dunn Street, we also work in 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). 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).
Around Dunn Street
Locally, jobs take us to sites close to South Wood and The Harrow pub, among other places. For rail, the closest station is Rainham (Kent) station, roughly 3.3 miles north-east. Well-known places in the area 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.
Site staff or a sealant specialist?
What you see is the finished bead, but most of the work is hidden. Correct depth, the right primer and a sealant matched to the movement are where general trades tend to cut corners.
There’s also the paperwork. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and we’ll confirm the paperwork you need with the quote.