Mastic sealing for building owners and managing agents in Greenhill, Kent
Mastic sealing in Greenhill, backed by over 20 years in commercial sealing. Fully insured, with a 12-month guarantee.
- Open joints in brickwork or panels
- Leaks at window and door perimeters
- Worn sealant at communal door frames
Mastic sealing for Greenhill sites
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
What happens if it’s left?
Mixed repairs by different contractors leave a patchwork of products and colours. A block-wide reseal gives one product, one colour and one guarantee and one 12-month guarantee. Over time, UV, weather and movement wear any sealant out. Replacing it before it fails keeps water out.
The work involved drives the cost: stripping out, preparation, sealing, access and phasing. Call for a quote.
Why choose Mastic Doctor in Greenhill
- 12-month guarantee on workmanship
- Fully insured, including public liability cover
- A fixed quote before work starts
- Products installed to the manufacturer’s instructions
Read how commercial sealant jobs are priced and our accreditations and insurance.
Mastic sealing in Greenhill, done properly
Different joints need different sealants. Window perimeters and external joints often take a low-modulus neutral-cure silicone, and MS polymer sealants stick well to many substrates and often take paint. We will confirm the colours available for the specified product. We work on communal kitchens and washrooms, balcony and threshold joints and shopfronts below residential blocks, and the usual reasons a site gets in touch are repeated reactive repairs to the same buildings and window mastic that has split and shrunk. Sealant contractors, mastic applicators, sealant specialists: whatever the job title on the order, the work in Greenhill is the same: failed joints cut out, faces prepared and the right sealant laid to the right depth.
For landlords and associations with stock in and around Greenhill, grouping buildings into one visit saves travel. Send the addresses and photos and we will quote for all of them together.
Our 12-month guarantee is about workmanship, not wear and tear. How long a sealant joint lasts depends on movement, exposure, cleaning and use, so we spell out the cover before we begin.
- Place
- Greenhill (CT6)
- Wider area
- Kent
- Cover
- 12 months on every job
- Quote
- A fixed quote before we start
- Telephone
- 01277 525 020
- Last updated
- 3 November 2026
Building owners, agents and FMs in Greenhill
As a CHAS accredited contractor and Constructionline member, we are straightforward to vet for your supplier list. Our insurance certificate can be sent along with the quote.
Main contractors use us as their sealant subcontractor. We work to your programme, your specification and your site rules.
Looking after buildings in and around Greenhill
The sea is no more than about 1 mile from Greenhill. Blocks and commercial buildings facing the sea take the most weather on their window perimeters and external joints, so it’s worth inspecting those sides more often. Rainfall across the South East, Greenhill included, is lower than in many parts of the UK. Outside mastic still needs a dry joint and the right temperature, and elevations facing the sun and the prevailing weather are normally where frame mastic ages first.
If your remit includes a building such as Thornden Wood Primary School, frame and door mastic can be programmed for the holidays. For owners of several units at places like Eddington Business Park, 0.8 miles to the east of Greenhill, one programme can deal with frame and external mastic across the lot.
Greenhill is about 1 mile south-west of Herne Bay, in Kent. We cover Greenhill and the rest of Kent, with the same fixed quotes and 12-month guarantee as everywhere else. We work across 931 places in Kent. There’s a separate page for London, roughly 53 miles from Greenhill.
If you need mastic sealing in CT6, the process matches everywhere else we work: details, then a fixed price, then sealing and a 12-month guarantee. Buildings on Love Street Close, Herne Drive and Matthews Road are within our area for mastic joints. If your building is just outside Greenhill, we cover Eddington (1 mile east), Bullockstone (1 mile south-east), Herne Common (1 mile south-east), Herne Bay (1 mile north-east) and Herne (1 mile south-east). Further afield, our area takes in Canterbury (6 miles south), Margate (12 miles east), Ramsgate (13 miles east), Broadstairs (14 miles east), Whitstable (3 miles west) and Faversham (10 miles west).
Around Greenhill
We work on buildings around The Share And Coulter Public House, Curtis Wood and Herne Bay High School and the streets around them. Greenhill’s nearest station is Herne Bay station, about 0.6 miles north-east. Well-known places in the area include Whitstable and Tankerton Hospital (2.4 miles west) and Tankerton Castle (3.1 miles west). Open spaces near Greenhill include West Blean and Thornden Woods.
Questions we are asked in Greenhill
Can you work in a care home near Greenhill with residents in?
Yes, with the manager deciding the order and timing of rooms. Noise and disruption are kept to a minimum.
Our building in Greenhill is near the coast: does that change the sealant?
It can, yes: buildings near the sea take more wind-driven rain, and salt in the air nearer the shore. Product choice and preparation matter more, and sea-facing elevations are worth inspecting more often.
Do you take on small jobs?
Single areas, one-off repairs and whole buildings are all quoted the same way: details, then a fixed price, then sealing, then a 12-month guarantee.
Do you seal on top of existing sealant?
No. Sealing over old material is one of the classic causes of early joint failure, so it all comes out first.
Which sealant will you use?
A specification, where there is one, decides it. If there isn’t one, it comes down to the joint: its movement, its surfaces and what it has to cope with.
Can you send RAMS and CSCS details before starting?
Our credentials include CHAS, Constructionline and public liability insurance. Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we’ll confirm with the quote.
Can you take on resealing for a block portfolio?
We do. Most of our mastic sealing is for agents, factors, housing associations and portfolio landlords and work can be quoted per building or as a whole.
Quoting for work in Greenhill
Sealant work doesn’t have a standard rate, since sites vary so much. What we look at:
- Which sealant the job calls for
- Phasing around occupants
- Quantities, in metres or numbers
- How much existing material needs removing
The price depends on how many linear metres there are, what has to come out first and the access. Call for a fixed quote once you have the details.
What we need to price the job
To price the job accurately, we need a clear picture of the site. Useful things to include:
- Access details, including height
- The asbestos register, for older buildings
- What the building is and how it’s used
- Specification clauses that apply
Send us photos, drawings or a joint schedule and a fixed quote comes back to you. If the job needs a look first, we’ll arrange a site visit.
Looking after the joints
Cleaning and maintenance staff play a part too. Pass these on to them:
- Check sealant joints during planned building inspections
- Look at the sunniest and most exposed elevations first
- Plan resealing building by building rather than complaint by complaint
- Check the asbestos register before any old mastic is disturbed
Where a paintable product was specified, it can be painted after curing. Non-paintable silicone shouldn’t be painted over.
One failed perimeter typically means others on the same building are close, so it pays to look at the whole elevation. A planned reseal saves repeated visits.
On site: what to expect
Our CSCS-carded applicators arrive with the sealants, primers and backing rod the job calls for. Joint faces are cleaned back to sound, dry surfaces, the manufacturer’s primer is applied where it’s called for, and the sealant is tooled off neatly. Work in places the size of Greenhill is planned as a single visit where we can. Photos with rough sizes let us arrive with everything needed.
- First comes a look at the joints and, for older buildings, the asbestos records.
- A fixed quote covers the joints, products and order of work.
- Failed mastic is removed completely.
- The joints are prepared and resealed with the right product.
- We finish each building before moving to the next.
Getting the site ready
- Explain the parking and delivery arrangements
- Agree which areas must stay open
- Send your site hours and access windows
Get a fixed quote
Specifications, drawings and tender packages are welcome with any enquiry, and we will price the work to it. Smaller jobs need nothing more than photographs and a few notes.
Read more
When to call us in Greenhill
Occasionally the substrate fails, not the sealant, such as crumbling render, brick arrises or frame edges. If the edges are unsound, we say so before quoting the sealing.
Most enquiries start with one or more of the following:
- Failed external movement joints
- Old repairs sealed over failed mastic
- Leaks at window and door perimeters
- Estate-wide sealant that is simply worn out
If you’re responsible for a building such as St Peter, frame and door mastic needs the same attention as any other property.
Before you book anyone
- Do they follow the manufacturer’s priming guidance?
- Is depth set with backing rod, or bond-breaker tape in shallow joints?
- Who will actually carry out the work
- Their plan for phasing and protecting the area