Mastic sealant contractors in Harvel
Mastic sealing for Harvel, from a contractor working since 2005. Fully insured and CHAS accredited.
- Leaks at window and door perimeters
- Window mastic that has split and shrunk
- Open joints in brickwork or panels
Mastic sealing in Harvel
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
How we handle mastic sealing in Harvel
On a residential block, the work happens around people’s lives. Dates, areas and the order of work are agreed with you in advance, giving you what you need to notify residents. Entrances and stairwells are kept in use while we work. We work on external wall and movement joints, window and door perimeters on blocks and communal entrances and stairwells, and what we’re called in for most is draught complaints from residents or tenants and damp patches beside frames. Sealant contractors, mastic applicators, sealant specialists: whatever the job title on the order, the work in Harvel is the same: failed joints cut out, faces prepared and the right sealant laid to the right depth.
For buildings around smaller places like Harvel, we group work so one trip covers it. Send photographs of the frames and joints and we will give a fixed quote.
What our 12-month guarantee covers is the way we did the job: the preparation, the sealing and the tooling. It doesn’t extend to damage, other trades’ later work or movement the joint was never designed to take.
- Location
- Harvel (DA13)
- Region
- Kent
- Cover
- 12 months on every job
- Quotes
- Quoted before any work starts
- Telephone
- 01277 525 020
- Last updated
- 3 November 2026
What the job involves on each surface
Tenement and older buildings
Some old mastics in pre-2000 buildings contain asbestos, so we check the asbestos register or survey first. Suspect material is tested before work continues.
Planned maintenance
We can work into your cyclical maintenance plan on a timetable you set.
Keeping the joints sound
Sealant joints are maintenance items, and how long they last depends on how they’re treated. Our advice:
- Plan resealing building by building rather than complaint by complaint
- Encourage occupiers to report problems at frames
- Make mastic part of routine maintenance checks
- Log resealing dates block by block
Include sealant in planned building 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’re called out for in Harvel
Buildings move with temperature and moisture, and the sealant takes up that movement. If the joint or the product wasn’t suited to the movement, it splits and fails early.
If one of these sounds familiar, it’s time for a closer look:
- Complaints coming in block by block
- The same joint failures repeated across a portfolio
- Movement joints with sealant missing
- Cracked, hardened mastic round windows on a block
Churches, halls and community buildings such as Church of Our Lady of the Meadow are looked after by trustees and committees like any other owner, and their frames, doors and external joints need mastic renewed in time.
What your quote should include
- Do they follow the manufacturer’s priming guidance?
- Are they CHAS accredited or on Constructionline?
- What site paperwork they can supply
- Whether old or failed sealant will be cut out, not overlaid
Mastic sealing around Harvel: points for this area
Harvel sits in one of the drier corners of the country, the South East. Outside mastic still needs a dry joint and the right temperature, and south- and west-facing elevations, which take the most sun and rain, often age first. Harvel lies roughly 23 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.
Historic properties like Cobham College (3.4 miles north-east of Harvel) show the age of some local stock, where frame mastic must suit soft brick or stone. If your remit includes a building such as Culverstone Green Primary School, frame and door mastic can be programmed for the holidays.
Harvel is about 6 miles south of Gravesend, in Kent. Anywhere in DA13, the process is the same: details in, fixed quote out, then sealing and a 12-month guarantee. 931 places across Kent fall within our area, including Harvel. Sites around London have their own page, about 23 miles away.
We cover the DA13 postcode districts. We cover commercial and managed buildings on St Francis Road, Hart Lane and Harvel Street. If your building is just outside Harvel, we cover Priestwood Green (1 mile north), Culverstone Green (1 mile south-west), Priestwood (1 mile north), South Street (1 mile north-west) and Vigo Village (1 mile south). Further afield, our area takes in Maidstone (9 miles south-east), Dartford (9 miles north-west), Sevenoaks (9 miles south-west), Royal Tunbridge Wells (15 miles south), Gravesend (6 miles north) and Tonbridge (11 miles south).
Near you in Harvel
Locally, jobs take us to sites close to Meopham School and Trosley Country Park and the streets around them. For rail, the closest station is Sole Street station, roughly 2.7 miles north. Other landmarks nearby include Leybourne Castle (3.6 miles south-east) and Coldrum Long Barrow (1.6 miles south). Not far away are Ranscombe Farm.
Also near Harvel
More services for Harvel
Questions about Harvel
Is Bowes Industrial Centre, near Harvel, within your area?
Yes, sites like Bowes Industrial Centre are within our area, along with the rest of Harvel. Send details of the unit and the work through our quote form for a quick quote.
Will you take on a block within reach of Sole Street station?
Yes, and several blocks can go on one quote. Photos of each elevation help us quote accurately.
How do you handle work on occupied blocks?
Residents and tenants carry on as normal. We flag any areas that need internal access well before the dates so it can be arranged.
How soon can the area be used again?
Curing time varies by product, and we confirm it on the day, and sign any area that should be left alone.
Can you take on resealing for a block portfolio?
Yes, block and estate work is a core part of what we do. We work through buildings in a planned order with dates agreed in advance.
Can weather delay the job?
It can, for external work. Wet joints and cold, damp or frosty conditions stop the sealant bonding properly, so we watch the forecast and rearrange outside work if we have to. Internal work is far less affected.
What guarantee do you give on resealing?
Our workmanship carries a 12-month guarantee and we hold public liability insurance.
Our process
When we get to site, we report to your site contact and complete whatever induction the building runs. Everything around the joints gets protected before any cutting starts, and the work usually takes a day or two for a single block, longer for an estate programme. For a building around Harvel, tell us how to find it and who will meet us. Add it to your enquiry and we will build it into the plan.
- First comes a look at the joints and, for older buildings, the asbestos records.
- The products and programme are set out in a fixed quote.
- Failed mastic is removed completely.
- Joint faces are cleaned, backed and resealed.
- Buildings are completed in turn.
Preparing the site
- Have the specification and drawings to hand
- Tell staff and tenants when we’ll be in
- Share your working hours and any access restrictions
Quotes
Let us know the site, the scope and your timescale, and we’ll put a fixed quote together. The easiest way is to give us a call on 01277 525 020 or email us.
Advice
Should maintenance staff do it?
A short, simple internal joint is often within reach of a maintenance team. Where it goes wrong is preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.
Using site staff can make sense for a small touch-up, but larger jobs are different: a specialist works through quantities efficiently, leaves a consistent finish and backs it with a 12-month guarantee.
Why act early in Harvel
Piecemeal repairs over the years often leave mismatched sealant. A block-wide reseal gives one product, one colour and one guarantee and one 12-month guarantee. Older rural buildings around Harvel move with the seasons, and rigid or tired sealant can’t keep up. The right product, sized to the joint, copes much better.
There’s no price list, since every building and every scope is different. Call for a quote.
What you get with us
- Sealing commercial buildings since 2005
- CSCS-carded applicators
- Old sealant cut out, never sealed over
- Constructionline member for supplier checks
Read our cost guide or our accreditations.