Mastic Sealing in Dunk's Green
Sealant work in Dunk's Green for main contractors, managing agents and facilities managers: mastic sealing for building owners, managing agents and housing associations, with a fixed quote first.
- Estate-wide sealant that is simply worn out
- Draught complaints from residents or tenants
- No planned programme for sealant
Need mastic sealing in Dunk's Green?
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Common questions from Dunk's Green clients
Does your area include sites such as The Alders Industrial Estate, near Dunk's Green?
Yes. We cover Dunk's Green and the area around it, including industrial estates, business parks and retail parks such as The Alders Industrial Estate. Photos and a short description are enough for a first look.
Can you quote for a block close to Borough Green & Wrotham station?
Yes, we work for agents, landlords and housing associations with blocks of every size. Photos of each elevation help us quote accurately.
Can weather delay the job?
It can, for external work. Sealant won’t bond properly to a wet or frosty joint, so we watch the forecast and rearrange outside work if we have to. Internal work is far less affected.
How do you reach windows on upper floors?
We talk through access for each building when we quote. Tell us the building height and any access already in place and we’ll confirm the approach in the quote.
Will you just go over the old sealant?
No. Overlaying old sealant is a frequent cause of early failure, so it all comes out first.
What if the old mastic contains asbestos?
Asbestos removal isn’t part of our work. If old sealant is suspected, work stops until it’s tested in line with the dutyholder’s asbestos management.
Do you do block-wide mastic programmes?
Block-wide and estate programmes are common. You get a fixed quote per building or for the whole job.
Mastic sealing in Dunk's Green
There isn’t one mastic for every joint on a building. Window perimeters and external joints often take a low-modulus neutral-cure silicone, while hybrid polymer sealants grip many materials and are often paintable, and colours are confirmed for whichever product is used. We work on shopfronts below residential blocks, balcony and threshold joints and communal entrances and stairwells, and the failures we’re asked to look at most are damp patches beside frames and a mix of products and colours from past repairs. Most enquiries from Dunk's Green start with one failed joint and grow into a wider look at the building: we check the joints around it and give you an honest view of what needs doing now and what can wait.
For owners with a single building near Dunk's Green, we plan to finish in one visit where possible. Send photographs of the frames and joints and we will give a fixed quote.
We stand by our work with a 12-month guarantee. That covers our preparation and application, and we come back if anything isn’t right.
- Location
- Dunk's Green (TN11)
- Wider area
- Kent
- Cover
- 12 months on our workmanship
- Price
- Fixed quote, scope in writing
- Telephone
- 01277 525 020
- Last updated
- 3 November 2026
Common problems we fix in Dunk's Green
UV and rain age external sealant. The surface chalks, the body stiffens and cracks appear most of all on the sunniest and most exposed elevations.
Site and facilities staff are often the first to spot these:
- Old repairs sealed over failed mastic
- Draughts at frames across a block
- Damp patches beside frames
- The same joint failures repeated across a portfolio
Schools and community buildings such as Plaxtol Primary School need frame and external mastic kept sound like any building.
Before you book anyone
- What site paperwork they can supply
- Proof of insurance
- Is depth set with backing rod, or bond-breaker tape in shallow joints?
- Whether primer will be used where the manufacturer specifies it
Diagnose, treat, sign off
Before we leave any area, we remove the tape, clean down and inspect every joint. Where the sealant needs time to cure before use, we tell you and sign the area. For a building around Dunk's Green, tell us how to find it and who will meet us. Add it to your enquiry and we’ll build it into the plan.
- First we look at the mastic on each building and note what needs replacing.
- A fixed quote follows, split by block or building if that suits you.
- Dates, areas and access are agreed so residents or tenants can be told in advance.
- Failed mastic is removed and the faces taken back to sound, dry material.
- Deep joints get backing rod, faces are primed if the manufacturer specifies it, then the joint is sealed and tooled.
- Finished joints are looked over and the 12-month guarantee confirmed.
Before we start on site
- Clear stock, furniture or equipment away from the joints
- Let building users know which areas are affected
- Share your working hours and any access restrictions
Ask for a quote
Every job follows the same four steps: send details, get a quote, we seal, guaranteed. To take the first step, call the office on 01277 525 020 or email a schedule or drawings.
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What else we do in Dunk's Green
Quoting for work in Dunk's Green
Quotes vary with the job. Expect it to depend on:
- How much existing material needs removing
- Whether the work must be split into stages
- The size and state of each joint
- The total length or number of joints
The work involved drives the cost: stripping out, preparation, sealing, access and phasing. Call for a fixed quote and we’ll explain how it’s made up.
What we need to price the job
To price the job accurately, we need a clear picture of the site. Useful things to include:
- Asbestos survey details if the building is older
- Rough lengths or quantities, or drawings if you have them
- Whether the building will be occupied during the work
- When you need the work done
If there’s a specification, drawings or a tender package, send it with your enquiry, and we’ll price against exactly what is specified. For smaller jobs, photos and a description will do.
What the job involves on each surface
Commercial and mixed-use buildings
Commercial buildings have mastic at shopfronts, entrances and external joints. We work across portfolios on a planned basis.
Tenement and older buildings
Older buildings, including Scotland’s sandstone tenements, have their own joint details. We look at the substrate before choosing a sealant.
After the work
After handover, these steps help:
- Plan resealing building by building rather than complaint by complaint
- Check sealant joints during planned building inspections
- Have the asbestos survey to hand for older buildings
- Prioritise elevations facing the weather
Add mastic joints to your cyclical inspections. Watch for splits, open gaps, hard or chalky surfaces and mastic pulling away, and note the building and elevation.
The longer failed joints are left, the more likely the substrate edges break up. Once that happens, repairs come before resealing.
General trades versus a specialist
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.
Certain joints really need a specialist: fire-rated seals that must follow a tested detail, trafficked floor joints and external movement joints among them. Getting these wrong normally costs more in the end than doing them right.
Mastic sealing around Dunk's Green: how the place shapes the job
Central London is about 24 miles from Dunk's Green. Managed blocks of flats are a big part of commuter-belt property; their frame mastic often ages block-wide. The South East is one of the drier parts of the UK. Outside mastic still needs a dry joint and the right temperature, and the sunniest, most exposed sides of a building normally need attention first.
Trustees of buildings like Plaxtol Church can bring frame and external mastic into a planned maintenance list. Property owners at sites such as The Alders Industrial Estate (2.9 miles east of Dunk's Green) can have mastic renewed between lettings.
Dunk's Green is about 4 miles north of Tonbridge, in Kent. We cover commercial sites throughout Dunk's Green, whether it’s a single job or part of a planned programme. Dunk's Green is one of 931 places in Kent on our list for mastic joints. For work in that direction, see our London page.
Business premises anywhere in TN11 are within our area. Sites close to Dunk's Green are covered too, including Plaxtol (1 mile north), Roughway (1 mile east), Claygate Cross (2 miles north), Crouch (2 miles north) and Pittswood (2 miles south). Further afield, our area takes in Maidstone (10 miles east), Dartford (14 miles north), Sevenoaks (6 miles west), Royal Tunbridge Wells (8 miles south), Gravesend (13 miles north) and Tonbridge (4 miles south).
Around Dunk's Green
Around Dunk's Green, our work takes us to commercial buildings near Hadlow Rural Community School, The Kentish Rifleman Public House and Ivy Hatch Nature Reserve and the streets around them. The nearest railway station is Borough Green & Wrotham station, roughly 2.8 miles north of the centre. Well-known places in the area include Tonbridge Cottage Hospital (5.3 miles south) and Ightham Court (3.1 miles north). For a walk, there’s Barden Lake.