Mastic sealing for building owners and managing agents in Chartway Street, Kent
Planning work on a mastic joint in Chartway Street? We look at it, seal it with the right product and hand it over with a 12-month guarantee.
- Patchy repairs in mismatched sealant
- Leaks at window and door perimeters
- Repeated reactive repairs to the same buildings
Mastic sealing in Chartway Street
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
About our mastic sealing in Chartway Street
For blocks and buildings in Chartway Street and across Kent, the process is the same: you send details, we return a fixed quote, the joints are resealed and the 12-month guarantee follows. Addresses, photos of typical joints and a rough idea of quantities let us give a quick quote or we can visit. We work on communal kitchens and washrooms, balcony and threshold joints and window and door perimeters on blocks, and the failures we are asked to look at most are no planned programme for sealant and a mix of products and colours from past repairs. For commercial sealant work in Chartway Street, you deal with one contact from quote to sign-off, whether it’s one building or several.
For owners with a single building near Chartway Street, we plan to finish in one visit where possible. Send photos of the frames and joints and we will give a fixed quote.
The 12-month guarantee is for workmanship rather than wear and tear. Sealant wears with time, and movement, weather, cleaning and use decide how fast, so we spell out the cover before we begin.
- Location
- Chartway Street (ME17)
- Wider area
- Kent
- Guarantee
- 12 months on our workmanship
- Quotes
- Fixed quote, scope in writing
- Call
- 01277 525 020
- Page updated
- 3 November 2026
How the job changes by surface
External movement joints
Brickwork, blockwork and panel joints let a building move. Failed sealant in a movement joint lets water in.
Commercial and mixed-use buildings
Commercial occupiers usually stay open during the work so the work is phased.
Looking after the joints
To get the most from the new sealant:
- Make it easy for occupiers to report draughts
- Have the asbestos survey to hand for older buildings
- Plan resealing building by building rather than complaint by complaint
- Log resealing dates block by block
Keep bins, bikes and deliveries away from low-level joints where you can. Damage at low level is the most common reason communal joints fail early.
Mastic fails gradually, then all at once in a wet spell. Acting at the first signs keeps it a straightforward reseal and the complaints that come with it.
Common questions from Chartway Street clients
Can you work at a site such as Park Wood Trading Estate, by Chartway Street?
Yes. Estates, retail parks and business parks around Chartway Street, Park Wood Trading Estate among them, are all within reach. A few photographs and the unit address let us price the work.
Can you quote for a block close to Harrietsham station?
Yes. Managing agents, landlords, property factors and housing associations are who this service is for. Send the address, photos of the elevations and your access arrangements, and we will give a fixed quote.
Is asbestos a concern with old mastic?
In older buildings, old mastic can contain asbestos. We check the asbestos register or survey before disturbing it and suspect material is tested first.
Can you send RAMS and CSCS details before starting?
We are 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.
Is mastic sealing guaranteed?
Our workmanship carries a 12-month guarantee, backed by public liability insurance.
Can you seal joints high up on a block?
Access is discussed and agreed before the quote is fixed. Tell us the number of storeys and whether scaffold or other access is planned, and we will tell you how we’d approach it.
Do you do block-wide mastic programmes?
Yes. We survey and price each building, then work through them in order, and the programme can start with the worst.
Diagnose, treat, sign off
The first thing on site is a walk round with your contact, to confirm the scope, the order of work and any areas we must keep clear. After that, any old or failed material is removed, each joint is prepared and the new sealant goes in. For work around Chartway Street, we aim to finish in one visit, so we ask for photographs and rough sizes first. That way the right products come on the day.
- A building-by-building inspection lists the failed joints.
- The quote is fixed and split as suits you.
- We agree the programme and dates with you.
- 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.
Before we start on site
- Let building users know which areas are affected
- Make sure the joints can be reached
- For older buildings, check the asbestos register before work
Get a fixed quote
Need a figure for a tender or a budget? Send the scope and any drawings, and we’ll return a fixed quote you can plan around. For a chat about it beforehand, speak to us on 01277 525 020 or email a schedule or drawings.
Related advice
For owners and agents in Chartway Street
The South East is one of the drier parts of the UK. Even so, frame mastic only goes on in dry, workable conditions, and elevations facing the sun and the prevailing weather are typically where frame mastic ages first. At about 36 miles from central London, Chartway Street is within reach of the capital. Within reach of London, blocks run by agents and associations are common around stations; their frame mastic often ages block-wide.
For a school such as Kingswood Primary School, perimeter mastic on windows and doors is a holiday job. For agents with blocks near Harrietsham station (3 miles north-east of Chartway Street), a block-wide mastic programme deals with frames, balconies and entrances in one go.
Chartway Street is about 5 miles south-east of Maidstone, in Kent. Across the ME17 postcode area, it works the same way: details in, fixed quote out, then sealing and a 12-month guarantee. We work across 931 places in Kent. There’s a separate page for London, about 36 miles away.
If you need mastic sealing in ME17, the process matches everywhere else we work: send details, get a quote, we seal, guaranteed. For a building on Chartway Street and Workhouse Lane or nearby, we can quote for mastic joints. If your building is just outside Chartway Street, we cover Kingswood (1 mile north-east), Ulcombe (1 mile south-east), Broomfield (2 miles north-east), Leeds (2 miles north) and Ashbank (2 miles north). A short drive away, we cover Maidstone (5 miles north-west), Ashford (12 miles south-east), Sittingbourne (10 miles north-east), Tonbridge (15 miles west), Faversham (13 miles north-east) and Kings Hill (10 miles west).
Near you in Chartway Street
For rail, the closest station is Harrietsham station, about 3 miles north-east. A little further out are Sutton Valence Castle (1 mile south-west) and KIMS hospital (5.1 miles north-west).
Why act early in Chartway Street
Draughts round window perimeters cost occupiers comfort and the windows usually get the blame. Resealing the perimeters is often the simpler fix where the frames themselves are sound. Around Chartway Street, it’s better to renew all the failing joints at once. Photos of every joint help us quote for the whole job.
Cost follows what’s involved: stripping out, preparation, sealing, access and phasing. Call for a fixed quote.
Why appoint us
- Joints cleaned back to sound surfaces
- Products installed to the manufacturer’s instructions
- CHAS accredited contractor
- 12 months’ guarantee on every job
Take a look at our cost guide and our accreditations and insurance.
Doing it in-house
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.
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.
When to call us in Chartway 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.
What tends to prompt an enquiry:
- Cracked, hardened mastic round windows on a block
- Draughts at frames across a block
- A mix of products and colours from past repairs
- Worn sealant at communal door frames
If you own or manage units on a site such as Park Wood Trading Estate, which lies north-west of Chartway Street, failed mastic on frames, door surrounds and external joints can be dealt with unit by unit.
Comparing quotes
- Whether old or failed sealant will be cut out, not overlaid
- How they handle RAMS and site documents
- Their public liability cover
- How joint depth will be controlled