Mastic sealing for building owners and managing agents in Gravesend, Kent
Mastic sealing for building owners, managing agents and housing associations in Gravesend and across Kent. CHAS accredited and fully insured, with a 12-month guarantee.
- Leaks at window and door perimeters
- The same joint failures repeated across a portfolio
- Occupiers reporting cold air round windows
Need mastic sealing in Gravesend?
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
How the job changes by surface
Commercial and mixed-use buildings
Mixed-use buildings combine shops below with flats or offices above, so phasing has to suit both. We plan around the site hours and access windows you give us.
Estate-wide resealing programmes
An estate of similar buildings suits a rolling programme. Each block is priced and scheduled in order.
About our mastic sealing in Gravesend
Older blocks and commercial buildings can have mastic that contains asbestos. We check the asbestos register or survey before any old sealant is cut out, and work stops for testing if there’s any doubt. Removing asbestos-containing material isn’t something we do. We work on window and door perimeters on blocks, communal entrances and stairwells and external wall and movement joints, and what we are called in for most is open joints in brickwork or panels and no planned programme for sealant. Facilities teams, main contractors and managing agents in Gravesend tend to want the same three things: a fixed quote, no surprises on site and a 12-month guarantee behind the result.
In a town such as Gravesend, buildings managed by agents and landlords range from flats over shops to small blocks and offices. Window and door perimeters, external joints and communal areas all need their mastic renewed from time to time.
Guaranteed is the last step of every job. Our workmanship is backed for 12 months, and the quote explains what it covers.
- Where
- Gravesend (DA12, DA11)
- Region
- Kent
- Cover
- A 12-month guarantee
- Price
- Quoted before any work starts
- Telephone
- 01277 525 020
- Updated
- 3 November 2026
What we’re called out for in Gravesend
Communal entrances and corridors see a lot of wear, and low-level joints get damaged. Cleaning products add to the wear.
Things that normally lead to an enquiry:
- Old repairs sealed over failed mastic
- Repeated reactive repairs to the same buildings
- Brittle perimeter mastic across a building
- Movement joints with sealant missing
Landlords with units on estates such as Canal Industrial Park, 0.7 miles to the north of Gravesend, can bring frame, door and external mastic across several units into one programme.
What your quote should include
- Proof of insurance
- How the existing material will be dealt with
- Can the work be phased to keep areas open?
- Are they CHAS accredited or on Constructionline?
Mastic sealing in Gravesend: the local picture
Gravesend is within about 2 miles of the coast. 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, Gravesend included, is lower than in many parts of the UK. Outside work still depends on dry joints, while the elevations that take the most sun tend to show hardened mastic first.
For agents with blocks near Gravesend station (0.9 miles north-west of Gravesend), a block-wide mastic programme deals with frames, balconies and entrances in one go. If you’re responsible for a building such as Christ Church Milton, frame and door mastic needs the same attention as any other property.
Gravesend is about 9 miles north-west of Gillingham, in Kent. We cover commercial sites throughout Gravesend, whether it’s a single job or part of a planned programme. 931 places across Kent fall within our area, including Gravesend. London is covered too, some 21 miles away.
Anyone looking for mastic sealing in DA12 and DA11 gets the same process as the rest of our area: send details, get a quote, we seal, guaranteed. We cover commercial and managed buildings on Christ Church Road, Hillside Drive and Laurel Avenue and the roads nearby. With the A2 and A226 nearby, Gravesend is straightforward for us to reach. If your building is just outside Gravesend, we cover Windmill Hill (1 mile north-west), Milton-next-Gravesend (1 mile north-east), Denton (1 mile east), Singlewell or Ifield (1 mile south) and Northfleet (1 mile west). Bigger towns within reach include Maidstone (13 miles south-east), Dartford (7 miles west), Sevenoaks (13 miles south-west), Swanley (9 miles west), Kings Hill (11 miles south) and Foley Park (12 miles south-east).
What’s near Gravesend
Locally, jobs take us to sites close to Northfleet Urban Country Park, St John's Catholic Comprehensive and St John's Catholic Comprehensive, among other places. For rail, the closest station is Gravesend station, roughly 0.9 miles north-west. A little further out are Gravesham Museum (0.9 miles north-west) and Stone Castle (4.5 miles west). Green spaces nearby include Sawyers Lake and Gad's Hill.
From enquiry to sign-off
Site rules come first: sign-in, induction and whatever permit system the building uses. With the paperwork done, the joints are worked through in the order agreed with your site contact. If you have more than one building in Gravesend, they can often be done on the same visit, with one quote covering them. Give us your access times and we will fit the work in.
- Each block or building is walked and the failed joints recorded with the likely cause.
- We send a fixed quote that sets out the joints, the products and the programme.
- Dates, areas and access are agreed so residents or tenants can be told in advance.
- We remove the old mastic completely and clean the joint faces back.
- Backing rod and primer go in where the joint and the product need them, then new sealant is applied and tooled.
- Finished joints are looked over and the 12-month guarantee confirmed.
What we need from you
- Share your working hours and any access restrictions
- Make sure the joints can be reached
- Have the specification and drawings to hand
Ask for a quote
Send us photos, drawings or a joint schedule and a fixed quote comes back to you. Where a site visit makes more sense, we’ll arrange one.
Related advice
Places near Gravesend
Other services in Gravesend
Aftercare for building managers
Sealant joints are maintenance items, and their life depends on movement, exposure, cleaning and use. We suggest:
- Avoid piecemeal callouts where you can
- Check sealant joints during planned building inspections
- Protect low-level joints in entrances
- Ask residents or tenants to report leaks and draughts early
Encourage occupiers to report water or draughts at frames. A quick report keeps a small repair small.
One failed perimeter usually means others on the same building are close, so it pays to look at the whole elevation. A planned reseal saves repeated visits.
Honest limits
Honesty saves time and money. New sealant won’t cure:
- Water coming in from the roof or rainwater goods
- Asbestos-containing sealant, which we don’t remove
- Leaks through the frame itself rather than the perimeter
Not sure which it is? You can call 01277 525 020 or email the details over and we will tell you honestly.
Joints and surfaces we work on
- Balcony and threshold joints
- Window and door perimeters on blocks
- Shopfronts below residential blocks
- Communal kitchens and washrooms
- External wall and movement joints
- Communal entrances and stairwells
Should maintenance staff do it?
There’s also the paperwork. Many sites expect CSCS cards, RAMS and proof of insurance, and our CSCS-carded applicators are used to working under those rules.
Redoing a failed joint usually costs more than getting it right at the outset, since all of it has to come out and the faces be cleaned back again. That’s why many clients bring in a specialist from the beginning.
Your questions answered
Will you take on work at estates like Canal Industrial Park, close to Gravesend?
Yes. We cover Gravesend and the area around it, including industrial estates, business parks and retail parks such as Canal Industrial Park. Send details of the unit and the work through our quote form for a quick quote.
Can you quote for a block close to Gravesend station?
Yes. Blocks of any size are within what we do. Send the address, photographs of the elevations and your access arrangements, and we will give a fixed quote.
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 hold CHAS accreditation and Constructionline membership.
Do you work with property factors and landlords?
Yes, block and estate work is a core part of what we do. Buildings are scheduled in turn with dates agreed in advance.
Can weather delay the job?
Outside, yes. Sealant needs a dry joint and a temperature within the product’s range, so damp, frosty or very cold days can stop external work. Internal work is rarely affected.
Can you seal joints high up on a block?
Every block is different. We agree access with you at quote stage so there are no surprises.
Will you just go over the old sealant?
No. Failed sealant is removed and the faces cleaned back to sound, dry material first, since fresh sealant will not bond reliably to aged material.