Mastic sealing for building owners and managing agents in Hartley, Kent
Mastic sealing for building owners, managing agents and housing associations throughout Hartley and nearby, carried out by CSCS-carded applicators. Fully insured and CHAS accredited.
- Movement joints with sealant missing
- Old repairs sealed over failed mastic
- Estate-wide sealant that is simply worn out
Mastic sealing for businesses in Hartley
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
Mastic sealing in Hartley, done properly
Mastic Doctor has sealed joints on commercial and residential blocks since 2005. Our applicators are CSCS-carded and we hold public liability insurance. Resealed mastic joints in Hartley carry our 12-month guarantee. We work on balcony and threshold joints, external wall and movement joints and shopfronts below residential blocks, and the usual reasons a site gets in touch are estate-wide sealant that is simply worn out and water getting in round frames after rain. A single leaking joint is often how a building in Hartley first comes to us: we look at the rest while we’re there and tell you what we find.
In and around smaller places like Hartley, landlords and agents often look after small groups of housing association properties, converted farm buildings and community buildings. Mastic around frames and on external joints wears out in time, whatever the building.
Every job ends the same way: guaranteed. You get a 12-month guarantee on our workmanship, and the quote explains what it covers.
- Where
- Hartley (TN17)
- Region
- Kent
- Cover
- 12 months on every job
- Price
- A fixed quote before we start
- Telephone
- 01277 525 020
- Page updated
- 3 November 2026
Should maintenance staff do it?
For most general trades, sealant is a sideline. A specialist prepares properly, controls joint depth and picks a product with the right movement class, which is what makes a joint last.
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 easy to get wrong without experience.
Nearby places to Hartley
More services for Hartley
Why deal with it now?
Resealing ahead of leaks keeps it to a maintenance task. After water has got in, there may be damp, damaged plaster or decoration to put right too and occupiers notice. Converted and older buildings near places like Hartley tend to move, and aged sealant cracks. The right product, sized to the joint, copes much better.
No two sites price the same: joint size, product, access and site hours all play a part. Send the details and a fixed figure follows.
Why clients in Hartley choose us
- Commercial sealant work since 2005
- Fixed quotes based on photographs, drawings or a visit
- One contact handling all your sites
- Colour options checked against the specified product
Read our cost guide or how we’re accredited.
Mastic sealing around Hartley: how the place shapes the job
Hartley lies roughly 39 miles out from central London. Managed blocks of flats are a big part of commuter-belt property, and window and balcony mastic on them tends to age at the same rate. The South East is one of the drier parts of the UK. External mastic still waits for dry faces and the right temperature, and the sunniest, most exposed sides of a building normally need attention first.
For owners of several units at places like Hartley Dyke Business Centre, which lies north-east of Hartley, one programme can deal with frame and external mastic across the lot. Schools and community buildings such as High Weald Academy need frame and external mastic kept sound like any building.
Hartley is about 8 miles south-east of Paddock Wood, in Kent. We send applicators to Hartley for mastic joints. 931 places across Kent fall within our area, including Hartley. For work in that direction, see our Brighton page, about 33 miles away.
We take on mastic joints across the TN17 postcode area. For a building on Hartley Road, Campion Crescent and Hartley Court Gardens or nearby, send details and we’ll quote for mastic joints. Just outside Hartley, we also work in Swattenden (1 mile east), Cranbrook (1 mile north-east), Baker's Cross (2 miles north-east), Gill's Green (2 miles south) and Beal's Green (2 miles south). Bigger towns within reach include Maidstone (13 miles north), Royal Tunbridge Wells (11 miles west), Tonbridge (13 miles north-west), Kings Hill (14 miles north), Foley Park (14 miles north) and Paddock Wood (8 miles north-west).
Near you in Hartley
Around Hartley, our work takes us to commercial buildings near Crane Valley, among other places. Nearby you’ll also find Benenden Hospital (4.7 miles east) and Sissinghurst Castle (3.8 miles north-east).
What we can’t put right
Honesty saves time and money. New sealant won’t cure:
- Substrate edges that need repairing first
- Leaks from above rather than through a joint
- Broken glass or failed sealed units
Not sure which it is? You can ring 01277 525 020 or email a schedule or drawings and we will tell you honestly.
Joints and surfaces we work on
- Communal kitchens and washrooms
- External wall and movement joints
- Communal entrances and stairwells
- Shopfronts below residential blocks
- Window and door perimeters on blocks
- Balcony and threshold joints
Common questions from Hartley clients
Can you work at a site such as Hartley Dyke Business Centre, by Hartley?
Yes. We cover Hartley and the area around it, including industrial estates, business parks and retail parks such as Hartley Dyke Business Centre. A few photos and the unit address let us price the work.
Is a smaller place like Hartley outside your area?
No. Small places get the same service as large ones. Our area covers London and the South East counties. Send photographs and a list of what needs doing, and we will plan the job to need as few trips as possible.
Can you plan resealing across several buildings?
We can. We survey and price each building, then work through them in order starting wherever is most urgent.
How long does a typical visit take?
The duration is planned around your programme and the access we’re given. You’ll have an expected duration with the quote.
What do you charge?
That depends on the job: quantities, access, the product and any phasing. Call for a quote and we’ll price it properly.
What guarantee do you give on resealing?
Every building we reseal has a 12-month guarantee. It applies to our workmanship rather than damage or problems with the frames.
How soon can the area be used again?
That comes down to the sealant and the temperature. Some take light use quickly, others need longer to cure, so we will confirm the curing time on the day.
Do you need mastic sealing in Hartley?
Communal entrances and corridors see a lot of wear, and low-level joints get damaged. Cleaning products add to the wear.
Things that normally lead to an enquiry:
- Failed external movement joints
- Repeated reactive repairs to the same buildings
- Draught complaints from residents or tenants
- Window mastic that has split and shrunk
With historic buildings such as Scotney Castle (4.4 miles west of Hartley) in the wider area, owners of older properties around Hartley should expect mastic to need a product that suits old masonry.
Comparing quotes
- Will RAMS and insurance details be available?
- Their pre-qualification and accreditations
- The terms of the workmanship guarantee
- Their public liability cover
Different surfaces, different methods
Planned maintenance
Mastic wears out like any building component; how fast comes down to movement, weather, UV and the product. Regular inspection is the best way to plan resealing.
External movement joints
Brickwork, blockwork and panel joints let a building move. Once that sealant goes, rain can reach the wall.
Our process
A typical day starts with protection: masking tape along the joint edges and sheeting over anything nearby. On site, the work usually takes anything from a day to a few weeks, depending on the number of buildings and joints, and our waste is bagged and taken away as we go. For work around Hartley, we aim to finish in one visit, so we ask for photographs and rough sizes first. Then the right materials arrive with us.
- We inspect each building and record the joints that have failed.
- You get a fixed quote, per block or for the whole programme.
- We agree the programme and dates with you.
- Failed sealant is removed and the faces prepared.
- New sealant goes in with backing rod and primer where needed.
- We check the finished work and confirm the guarantee.
Before we start on site
- Have the specification and drawings to hand
- For older buildings, check the asbestos register before work
- Move anything stored against the joints
Request a quote
For a fixed quote, ring 01277 525 020 or email us, telling us the site location and the nature of the job. You can also send details through our quote form.