Hollow Street mastic sealing
Mastic sealing for building owners, managing agents and housing associations in Hollow Street and across Kent. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.
- Communal area joints that look neglected
- Failed external movement joints
- A mix of products and colours from past repairs
Need mastic sealing in Hollow Street?
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
Looking after the joints
Sealant joints are maintenance items, and their life depends on movement, exposure, cleaning and use. Our advice:
- Have the asbestos survey to hand for older buildings
- Look at the sunniest and most exposed elevations first
- List the paperwork your organisation requires when you send details
- Avoid piecemeal callouts where you can
Log the date and extent of the resealing for each block. That makes future programmes easier to plan and gives you a history.
Budgets are easier to plan when sealant is part of planned maintenance. A programme can start with the worst buildings and work down the list.
Mastic sealing for commercial buildings in Hollow Street
Owners and agents typically inherit a building’s mastic rather than choose it and it slowly wears out: window perimeters, door frames, external joints and communal junctions all rely on it. Once it cracks, hardens or comes away, draughts and water find a way in, and occupiers start reporting it. We work on external wall and movement joints, communal kitchens and washrooms and balcony and threshold joints, and what we’re called in for most is occupiers reporting cold air round windows and failed external movement joints. Whoever orders the work in Hollow Street, the brief is normally the same: a clear scope, tidy work and joints that don’t fail again.
For owners with a single building near Hollow Street, we plan to finish in one visit where possible. Photos of each elevation help us quote accurately.
Every job we finish is backed by a 12-month workmanship guarantee, in Hollow Street as everywhere else we work. If a joint we sealed fails because of how it was installed, we come back and put it right.
- Location
- Hollow Street (CT3)
- Region
- Kent
- Guarantee
- A 12-month guarantee
- Quotes
- A fixed quote before we start
- Phone
- 01277 525 020
- Updated
- 3 November 2026
Also in Hollow Street
What affects the price in Hollow Street
Each job is priced on its own details. The things that drive the figure:
- How much existing material needs removing
- Joint width, depth and condition
- Whether the work must be split into stages
- The product specified
The work involved drives the cost: stripping out, preparation, sealing, access and phasing. Call for a fixed quote.
Sending details for a quote
For an accurate fixed quote, we need a clear picture of the site. Useful things to include:
- The asbestos register, for older buildings
- Whether the building will be occupied during the work
- Where the site is, with the postcode
- Drawings or a marked-up plan, if available
Let us know the site, the scope and your timescale, and we’ll put a fixed quote together. To get it moving, give us a call on 01277 525 020 or use the quote form.
When to bring in a specialist
A short, simple internal joint is often within reach of a maintenance team. The usual problems come from preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.
There’s also the paperwork. Many sites expect CSCS cards, RAMS and proof of insurance, and we’ll confirm the paperwork you need with the quote.
How the job changes by surface
Window and door perimeters on blocks
Blocks have a mix of frame materials, and the product is matched to the frame material and the masonry. We will confirm the colours available for the specified product.
Estate-wide resealing programmes
A programme can start with the worst buildings and work down. Quotes can be per block or for the full programme.
Common questions from Hollow Street clients
Will you take on a block within reach of Sturry station?
Yes. Blocks of any size are within what we do. Photos of each elevation help us quote accurately.
Is Chislet Business Park, near Hollow Street, within your area?
Yes, sites like Chislet Business Park are within our area, along with the rest of Hollow Street. Photos and a short description are enough for a first look.
How long do sealant joints last?
There’s no fixed lifespan: movement, exposure, cleaning, traffic and the product all play a part. Treat them as maintenance items and inspect them regularly.
Can you reseal a whole block or estate?
Block-wide and estate programmes are common. You get a fixed quote per building or for the whole job.
How do you choose the sealant?
If the job is specified, we follow the specification. If not, we choose for the movement, the surfaces and the conditions, in line with the manufacturer’s guidance.
What paperwork can you provide?
Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we will confirm with the quote. We are CHAS accredited and a Constructionline member.
How long does a job like this take?
It depends on the scope, though a typical visit usually takes a few days for most blocks, with larger programmes scheduled building by building. Larger or phased jobs take longer, and we will give you a timescale with the quote.
Planned mastic for Hollow Street portfolios
Hollow Street lies roughly 56 miles out from central London. Within reach of London, blocks run by agents and associations are common around stations. The South East is one of the drier 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 typically where frame mastic ages first.
Site managers at schools like Chislet Church of England Primary School can fit frame mastic into the summer works. If you look after a block within reach of Sturry station, which lies south-west of Hollow Street, frame and balcony mastic can be renewed on one programme.
Hollow Street is about 3 miles south-east of Herne Bay, in Kent. Across the CT3 postcode area, the process is the same: send details, get a fixed quote, we seal, and the work is guaranteed. 931 places across Kent fall within our area, Hollow Street among them. There’s a separate page for London, roughly 56 miles from Hollow Street.
Anyone looking for mastic sealing in CT3 gets the same process as the rest of our area: send details, get a quote, we seal, guaranteed. We also cover Chislet (1 mile north-east), Chitty (1 mile north-east), Old Tree (1 mile north-west), Boyden Gate (1 mile north) and Hoath (1 mile west) for mastic joints. Nearby towns on our patch include Canterbury (6 miles south-west), Margate (9 miles east), Dover (14 miles south), Ramsgate (10 miles east), Broadstairs (11 miles east) and Whitstable (7 miles west).
Around Hollow Street
Locally, jobs take us to sites close to Grove Ferry Picnic Area and Spires Academy. Hollow Street’s nearest station is Sturry station, about 3.6 miles south-west of the centre. Nearby you’ll also find St Martins Hospital (5.1 miles south-west). Green spaces nearby include West Blean and Thornden Woods.
What we’re called out for in Hollow Street
Topping up old mastic is a common shortcut. New sealant won’t grip failed sealant and the repair soon fails.
Typical triggers for a call:
- Water getting in round frames after rain
- Failed external movement joints
- Complaints coming in block by block
- Estate-wide sealant that is simply worn out
Property owners at sites such as Chislet Business Park, 1 mile to the south-west of Hollow Street, can have mastic renewed between lettings.
Before you book anyone
- Whether primer will be used where the manufacturer specifies it
- How they’ll work around occupants
- Will RAMS and insurance details be available?
- Proof of insurance
Our process
We schedule the visit to fit the site hours and access windows you give us. On the day, the work area is kept contained and tidy, and your contact hears from us before we move to the next area. For a building around Hollow Street, tell us how to find it and who will meet us. Add it to your enquiry and we will build it into the plan.
- A building-by-building inspection lists the failed joints.
- The quote is fixed and split as suits you.
- Dates and areas are agreed so occupiers can be told.
- Old mastic is removed and the joint faces prepared.
- New sealant goes in with backing rod and primer where needed.
- We check the finished work and confirm the guarantee.
What we need from you
- Confirm the product named in the specification
- Share your working hours and any access restrictions
- Explain the parking and delivery arrangements
Get a fixed quote
Specifications, drawings and tender packages are welcome with any enquiry, and we’ll price against exactly what is specified. Smaller jobs need nothing more than photos and a few notes.