
Mastic sealing for building owners and managing agents in North Street, Medway
Looking for mastic sealing in North Street? It’s simple: send details, get a quote, we seal, guaranteed.
- Old repairs sealed over failed mastic
- Occupiers reporting cold air round windows
- The same joint failures repeated across a portfolio
Mastic sealing near North Street
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
From enquiry to sign-off
Diagnose, treat, sign off: that’s the shape of every visit. First comes an inspection and agreement on scope, then the work is carried out to the specified product and detail, and we finish with a walk round so the work can be signed off. Smaller jobs around North Street can be grouped with others nearby. You will have a fixed quote before work starts.
- First comes a look at the joints and, for older buildings, the asbestos records.
- The products and programme are set out in a fixed quote.
- Failed mastic is removed completely.
- Joint faces are cleaned, backed and resealed.
- We finish each building before moving to the next.
Getting the site ready
- Tell staff and tenants when we will be in
- Flag any permit to work we will need
- Point out any areas we must not close
Request a quote
To get a fixed quote, phone 01277 525 020 or send details through our quote form, telling us the site location and the nature of the job. You can also send details through our quote form.
Related advice
How we handle mastic sealing in North Street
We diagnose before we prescribe: which joints have failed, why, and whether sealant is the right answer. Failed mastic is stripped, the faces taken back to sound material, primed where the manufacturer specifies and resealed, with backing rod setting the depth where it’s needed. We work on window and door perimeters on blocks, shopfronts below residential blocks and communal entrances and stairwells, and what we’re called in for most is communal area joints that look neglected and draughts at frames across a block. For commercial sealant work in North Street, you deal with one contact from quote to sign-off, for single jobs and planned programmes alike.
Owners and agents with buildings around smaller places such as North Street tend to manage small terraces of association properties, converted barns and commercial units. Mastic around frames and on external joints wears out in time, whatever the building.
We stand behind the joints we seal: 12 months, guaranteed. That covers our preparation and application, and we come back if anything isn’t right.

- Location
- North Street (ME3)
- Region
- Medway
- Guarantee
- A 12-month guarantee
- Quote
- A fixed quote before we start
- Telephone
- 01277 525 020
- Updated
- 3 November 2026
Also near North Street
What else we do in North Street
Looking after buildings in and around North Street
The sea is no more than about 1 mile from North Street. Sea-facing elevations take driven rain and salt, and their mastic shows it before the sheltered sides do; plan inspections around that. The South East is one of the drier parts of the UK. Outside work still depends on dry joints, and the sunniest, most exposed sides of a building typically need attention first.
Student accommodation around universities such as University of Greenwich - Medway, 4 miles south-west of North Street, is typically managed block by block, which suits a planned mastic programme. Trustees of buildings like Church of St Peter and St Paul can bring frame and external mastic into a planned maintenance list.
North Street is about 5 miles north of Gillingham, in Medway. Anywhere in ME3, it works the same way: details in, fixed quote out, then sealing and a 12-month guarantee. North Street is one of 54 places we cover in Medway. For work in that direction, see our London page (30 miles or so).
Work on mastic joints is covered throughout ME3, whatever the building. We also cover Tunbridge Hill (1 mile south-west), Kingsnorth (1 mile south), Stoke (1 mile north-east), Fenn Street (1 mile north-west) and Sharnal Street (1 mile west). Further afield, our area takes in Gillingham (5 miles south), Chatham (7 miles south-west), Rochester (6 miles south-west), Rainham (5 miles south), Strood (6 miles south-west) and Luton (6 miles south-west).
Around North Street
Recent enquiries here include premises near The White Horse pub. The closest station to North Street is Gillingham (Kent) station, roughly 4.2 miles south-west. Nearby you’ll also find Medway Maritime Hospital (4.9 miles south-west) and Upnor Castle (4 miles south-west). Not far away are Bishop Saltings.
Common problems we fix in North Street
Poor preparation explains many failed joints. Without clean, sound faces and a primer where the product needs one it comes away from one face.
Common reasons buildings call us in:
- Leaks at window and door perimeters
- Cracked, hardened mastic round windows on a block
- A mix of products and colours from past repairs
- Repeated reactive repairs to the same buildings
Buildings close to stations like Gillingham (Kent) station (4.2 miles south-west of North Street) are often flats over shops, with frame mastic to keep sound.
Before you book anyone
- What the guarantee covers, and for how long
- Who will actually carry out the work
- Whether primer will be used where the manufacturer specifies it
- Is the sealant right for the movement and the substrate?
Leave it or put it right?
Replacing mastic before water gets in is a planned job. After water has got in, there may be damp, damaged plaster or decoration to put right too, and the complaints come with it. Converted and older buildings near places like North Street tend to move, and aged sealant cracks. A sealant with the right movement capability, correctly sized, lasts far better.
Small jobs and large programmes are priced from the same things: what’s in scope, how we reach it, what’s specified and when it needs doing. Call for a quote, and you’ll have a fixed figure to work with.
What you get with us
- A Constructionline member, so easy to vet
- Joints cleaned back to sound surfaces
- CSCS-carded applicators
- Public liability insurance in place
Take a look at our cost guide and our accreditations.
Quoting for work in North Street
Each job is priced on its own details. The things that drive the figure:
- How accessible the joints are
- The total length or number of joints
- Removal of failed or old sealant
- Specialist products, such as fire-rated or hygienic sealants
The specified product makes a difference, and so does the preparation, such as cutting out, priming or new backing rod. Access, phasing and site rules also count.
What to include in your enquiry
Good information means a firmer quote. When you get in touch, include:
- Anything awkward about access or site hours
- Any dates the work must fit around
- The type of building and who uses it
- Rough lengths or quantities, or drawings if you have them
Tell us about the building, the joints and when you need the work done, and we’ll put a fixed quote together. The easiest way is to call 01277 525 020 or email the details over.
North Street: questions and answers
Do you work for managing agents with blocks near Gillingham (Kent) station?
Yes. Managing agents, landlords, property factors and housing associations are who this service is for. We work to your notice and access arrangements.
Can being near the sea in North Street affect the sealant we need?
It can. Driven rain and salt are tougher on outside sealant than sheltered inland conditions. Product choice and preparation matter more, and sea-facing elevations are worth inspecting more often.
Can you work to our specification?
Yes. The specification and the manufacturer’s installation guidance are what we work to, and we raise anything unclear before work begins.
Who decides which product is used?
The specification comes first, if there is one. If there isn’t one, it comes down to the joint: its movement, its surfaces and what it has to cope with.
Do you cover North Street?
Yes. We take on work across North Street, and the same phone number covers every area.
Do you do block-wide mastic programmes?
Block-wide and estate programmes are common. The quote can be split however suits your budgeting.
What paperwork can you provide?
We’re CHAS accredited, a Constructionline member and carry public liability insurance. For specific documents, tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we’ll confirm with the quote.
Should maintenance staff do it?
There’s also the paperwork. Many sites expect CSCS cards, RAMS and proof of insurance, and our CSCS-carded applicators are used to working under those rules.
For a quick touch-up, site staff may be fine, but larger jobs are different: a specialist brings efficiency, a consistent finish and a 12-month guarantee.
For managing agents and facilities managers
FMs need a contractor who is easy to get on site. Let us know the documents you need (RAMS, insurance certificate, CSCS details) and we’ll confirm them with the quote.
For main contractors, we work as the sealant subcontractor on new-build and refurbishment projects. We work to your programme, your specification and your site rules, and our applicators hold CSCS cards.