Mastic sealing for building owners and managing agents in Ash, Kent
Mastic sealing in Ash, backed by over 20 years in commercial sealing. Fully insured, with a 12-month guarantee.
- Brittle perimeter mastic across a building
- Water getting in round frames after rain
- Failed external movement joints
Mastic sealing for Ash sites
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
About our mastic sealing in Ash
For blocks and buildings in Ash 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 shopfronts below residential blocks, external wall and movement joints and balcony and threshold joints, and the usual reasons a site gets in touch are window mastic that has split and shrunk and patchy repairs in mismatched sealant. Whether you call it commercial sealant work, mastic application or joint sealing, in Ash it comes down to the same thing: the right product in a properly prepared joint.
Owners with buildings around smaller places like Ash often group mastic work so one visit covers several properties. Send the addresses and photos and we’ll quote for all of them together.
What our 12-month guarantee covers is the way we did the job: preparation, application and finish. Damage, later alterations by others and movement beyond what the joint was designed for sit outside it.
- Place
- Ash (CT3)
- Region
- Kent
- Guarantee
- 12 months on every job
- Price
- A fixed quote before we start
- Phone
- 01277 525 020
- Updated
- 3 November 2026
Honest limits
We check first that sealant really is the fix. It isn’t the answer for:
- Substrate edges that need repairing first
- Leaks through the frame itself rather than the perimeter
- Roof leaks, gutters or failed flashings that aren’t sealant joints
Not sure which it is? You can ring 01277 525 020 or email the details over and we will tell you honestly.
Surfaces we seal
- Balcony and threshold joints
- Communal kitchens and washrooms
- Communal entrances and stairwells
- External wall and movement joints
- Window and door perimeters on blocks
- Shopfronts below residential blocks
Our process
Working in a building that stays open takes some planning. The work area is signed and kept contained, with routes through the building left open and move on in phases so staff and visitors can carry on around us. If neighbouring businesses or buildings around Ash need work too, visits can be combined. Mention the building’s opening times and we’ll work within them.
- 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.
- Old mastic is removed and the joint faces prepared.
- New sealant goes in with backing rod and primer where needed.
- Each building is checked and signed off with the 12-month guarantee.
Getting the site ready
- For older buildings, check the asbestos register before work
- Tell staff and tenants when we’ll be in
- Send your site hours and access windows
Getting a fixed quote
Need a figure for a tender or a budget? Send the scope and any drawings, and we will return a fixed quote that you can work with. For a chat about it beforehand, give us a call on 01277 525 020 or send photos by email.
Related advice
Also near Ash
Also in Ash
Quoting for work in Ash
A fixed quote reflects the actual work. It allows for:
- The total length or number of joints
- Location, for remote and island sites
- Any access equipment needed
- Working within restricted access windows
What a job costs comes down to the quantity of joints, what has to come out first and how the joints are reached. Call for a fixed quote once you have the details.
What we need to price the job
A good diagnosis starts with the right details. Tell us:
- Any specification or named product
- The asbestos register, for older buildings
- A wide shot and a close-up of the area
- Drawings or a marked-up plan, if available
Photos, drawings or a schedule of the joints are often enough for a fixed quote. Where a site visit makes more sense, we’ll arrange one.
Aftercare for building managers
Sealant joints are maintenance items, and their life depends on movement, exposure, cleaning and use. Our advice:
- Avoid piecemeal callouts where you can
- Share the asbestos register when you send details
- List the paperwork your organisation requires when you send details
- Start inspections with the most exposed faces
Add mastic joints to your cyclical inspections. Check for splits, open joints, brittle mastic and lifting edges, and note the building and elevation.
Failed mastic often goes unnoticed until heavy rain finds it. Resealing when cracking first shows avoids water damage and saves internal repairs.
What we are called out for in Ash
Buildings move with temperature and moisture, and the sealant takes up that movement. A joint that was too narrow, too thin or the wrong product can’t cope and fails early.
If one of these sounds familiar, it’s time for a closer look:
- Failed external movement joints
- Patchy repairs in mismatched sealant
- Window mastic that has split and shrunk
- Damaged joints in communal entrances and corridors
Historic properties like Goodnestone Park, 3.3 miles to the south-west of Ash, show the age of some local stock, where frame mastic must suit soft brick or stone.
Questions to ask before you book
- How they handle RAMS and site documents
- Proof of insurance
- Whether primer will be used where the manufacturer specifies it
- How they’ll work around occupants
Ash: questions and answers
Will you take on a block within reach of Sandwich station?
Yes, we work for agents, landlords and housing associations with blocks of every size. Give us the building’s details and say how residents are notified, and we’ll quote and plan to suit.
Will you take on work at estates like Birnham Farm Business Centre, close to Ash?
Yes. We cover Ash and the area around it, including industrial estates, business parks and retail parks such as Birnham Farm Business Centre. A few photographs and the unit address let us price the work.
Do you work to architects’ specifications?
Yes. The specification and the manufacturer’s installation guidance are what we work to.
How long does a job like this take?
The duration is planned around your programme and the access we are given. You’ll have an expected duration with the quote.
Is it fine to apply new sealant on top of old?
No. We cut the old material out and clean the joint back before sealing, because fresh silicone will not bond with aged silicone.
What if the old mastic contains asbestos?
Asbestos removal isn’t part of our work. Anything suspect is tested before we carry on in line with the dutyholder’s asbestos management.
How long will the new sealant last?
There isn’t a single answer, since movement, weather, cleaning and use all affect it. Regular inspection is the best way to catch problems early.
What happens if it’s left?
Sealing over failed mastic looks tidy for a while. It won’t grip the old sealant and soon comes away. Cutting out and resealing properly does it once. Small buildings around Ash suffer from failed joints as much as large ones. Early resealing avoids the damage that follows a leak.
Access often affects the price as much as the sealing: joints within easy reach take less time than ones that need access equipment. Mention the access as part of your enquiry.
Why us?
- Fully insured, including public liability cover
- Our applicators hold CSCS cards
- One contact handling all your sites
- Constructionline member
Take a look at our cost guide and how we’re accredited.
Looking after buildings in and around Ash
Ash is in the South East, one of the UK’s drier regions. External mastic still waits for dry faces and the right temperature, and elevations facing the sun and the prevailing weather are typically where frame mastic ages first. Ash is about 61 miles from central London. Managed blocks of flats are a big part of commuter-belt property.
For agents with blocks near Sandwich station (2.8 miles east of Ash), a block-wide mastic programme deals with frames, balconies and entrances in one go. For owners of several units at places like Birnham Farm Business Centre (1.4 miles south-east of Ash), one programme can deal with frame and external mastic across the lot.
Ash is about 7 miles north-west of Deal, 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. Our Kent coverage takes in 931 places. There’s a separate page for London, about 61 miles away.
If you need mastic sealing in CT3, the process matches everywhere else we work: send details, get a quote, we seal, guaranteed. Streets here include The Street, Goodban Square and Chilton Place. Nearby places we also cover include Guilton (1 mile west), Weddington (1 mile north-east), Durlock (1 mile west), Cop Street (1 mile north) and Coombe (1 mile south-east). Further afield, our area takes in Canterbury (9 miles west), Margate (8 miles north-east), Dover (10 miles south), Folkestone (14 miles south), Ramsgate (7 miles north-east) and Broadstairs (9 miles north-east).
Local landmarks in Ash
We work on buildings around The Chequer Inn. The closest station to Ash is Sandwich station, about 2.8 miles east. A little further out are White Mill (2.1 miles east). Not far away are Monk's Wall nature reserve.