Kent · England
External & façade joints in Riverhead, Kent
Movement joints in Riverhead need attention? We remove the old material, prepare the joints and seal them properly.
- Joints with sealant missing in places
- Damp patches traced to an open external joint
- Weathered mastic that no longer stretches
External mastic in Riverhead
Short cuts in external joints show up within a season or two. New sealant over old, joints packed with mortar and beads with no backing all tend to fail early. We take the old material out and do it properly. Typical jobs include sealant that has lost its bond to the brick or render and brick movement joints where the sealant has split, on copings & trims, concrete & block and brickwork movement joints.
In and around Riverhead, older properties sit alongside newer ones, each with its own outside joints. Older gutters and trims need their joints resealed; newer brick and render need their movement joints kept sound.
There’s a 12-month guarantee on every job.
- Location
- Riverhead (TN13, TN14)
- Region
- Kent
- Guarantee
- 12 months on all our work
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Why act early in Riverhead
Resealing a run of joints in one go is generally better than patching one at a time. Joints of the same age tend to fail together, and access only has to be arranged once. Homes in smaller places like Riverhead can face more weather, and failed outside joints let damp into walls. Inside, a split seal lets water into floors and panels just as it would anywhere.
There are no prices on our website, because each job is priced on what it involves. Call for a quick quote.
Why book with us
- White, clear, grey or another colour, product permitting
- We never seal over old sealant
- A sealant colour to suit the surroundings
- Tidy, careful work
How we quote for external mastic
Your quote is based on your job. We take into account:
- Mould in or behind the old joints
- The old material and how stubborn it is
- Any working-time requirements on site
- The type of sealant required
A few things move the cost up or down: the old material and how easily it comes out, whether mould needs treating, and whether the work is at height. Your quote takes all of that into account.
What to tell us for a quote
To make quoting easier, let us know:
- Access, such as stairs, a lift or height
- Where the job is, and your postcode
- The problem you’ve noticed
- The rough size of the job
Getting a quote is simple: let us know what needs doing and where. Photos by email help us understand the job, and we will come back to you with a quote.
Also near Riverhead
Also in Riverhead
Landlord and commercial work in Riverhead
Housing providers, facilities teams and property managers book us too. Several sites can go on one quote, and we are fully insured for the work.
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance that we can handle for you.
When it isn’t the sealant
New sealant cannot fix everything, and we’d rather say so up front. Sealant will not put right:
- Rising or penetrating damp from elsewhere in the wall
- Movement that’s more than a sealant joint can take
- Adding movement joints to masonry that has none
Not sure which it is? You can ring 0345 464 0079 or drop us an email and we will tell you honestly.
Joints and surfaces we work on
- Copings & trims
- Brickwork movement joints
- Joints between brick and frames
- Façade panels
- Concrete & block
- Render & cladding joints
Walls and rooflines in Riverhead
London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. Historic houses like Knole House (about 2 miles south-east) are a reminder that the area around Riverhead has older buildings as well as new. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth.
If you look after a building such as Amherst School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. For an older house near a landmark such as Church of St Mary, an extension built onto an older house moves differently, and the joint between them takes the strain.
Riverhead is about 1 mile west of Sevenoaks, in Kent. We provide external mastic to householders, landlords and businesses in Riverhead. Riverhead is one of 922 places in Kent we cover for external mastic. You can also see our page for London, roughly 19 miles from Riverhead.
Here we cover the TN13 and TN14 postcode area for external mastic. Streets in the area include London Road, Hamlin Road and Witches Lane, all of which we cover. Other places close to Riverhead include Dunton Green (1 mile north), Bessels Green (1 mile south-west), Sevenoaks (1 mile east), Chipstead (1 mile west) and Kippington (1 mile south). Larger places within reach include Maidstone (15 miles east), Dartford (11 miles north), Royal Tunbridge Wells (11 miles south), Gravesend (14 miles north-east), Tonbridge (8 miles south-east) and Northfleet (13 miles north-east).
Landmarks near Riverhead
In Riverhead, that means homes and buildings near The Beehive Public House, Trinity School and Montreal Park, among other places. For rail, the closest station is Sevenoaks station, roughly 0.8 miles south-east. Nearby you will also find Kemsing Castle Bank (3 miles north-east) and Sevenoaks Museum (1.4 miles south-east). The countryside around Riverhead includes Dryhill Nature Reserve and Betsom's Hill.
When to call us in Riverhead
Buildings move more than people expect. Clay bricks expand slightly over their life, concrete and block shrink, and everything moves with temperature and wet. The sealant in the movement joints takes that strain.
Most people get in touch when they notice something like this:
- Moss and dirt in joints with no sealant left
- Rain getting behind render or cladding at a joint
- Gaps where render, brick and frames meet
- Movement joints filled with mortar instead of sealant
For landlords with property near Sevenoaks station, outside joints that have cracked can let damp into a rental, so check them between lets.
Questions to ask before booking
- Whether VAT is included
- Whether they seal over old material or remove it
- What guarantee comes with the work
- How hidden problems are handled
What we do, step by step
We bring everything the job needs with us, so you do not need to buy or prepare anything. After a quick look at the joints together, the area is protected and the work begins. Most jobs take anything from a few hours to several days, depending on the building. In a smaller place like Riverhead, parking is seldom the issue; lanes, gates and long drives are worth mentioning. If the job is outside, tell us about side access and how high the joints are.
- First, the joints are inspected and the access agreed.
- Every bit of old sealant and any mortar or debris is cut out.
- The faces are brushed clean and primed where the product requires it.
- We fit closed-cell backing rod to control the depth.
- We apply the sealant, tool it and check the whole run.
Preparing for the visit
- Tell us about access, such as stairs, a lift or high-level joints
- Let us know if you’ve seen damp or leaks
- On commercial sites, let us know about site rules
Getting a quote
We don’t publish a price list. Instead, we give you a clear quote for your job. To arrange one, phone 0345 464 0079 or email us.
Related advice
Your questions about external mastic in Riverhead
Can you do external mastic in Riverhead?
Yes. We work across London and the South East, and Riverhead is part of that. You can call 0345 464 0079 or send us an email and tell us what needs doing, and we will send you a clear quote.
Can you help a landlord with a rental near Sevenoaks station?
Yes. We work for landlords and letting agents as well as householders, and several properties can go on one quote. Just call 0345 464 0079 or email us with the address and what needs doing, and we’ll give you a clear quote.
Are you an approved applicator?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we are part of it.
Is it OK to fill a movement joint with cement?
No. Mortar locks the joint solid, so the wall cracks somewhere else instead. It needs a flexible sealant over backing rod.
How often do external joints need resealing?
It depends on the exposure, the movement and the product. Treat it as a maintenance item and look at it yearly and reseal when it splits.
Is there any odour?
Possibly a little. Any smell clears as the sealant cures, and ventilation helps.
Where do you work from?
Our base is Crawley. We work across South East England, London and Scotland.
How much does external mastic cost in Riverhead?
It depends on the job, so we quote each one individually. For a quick quote, phone 0345 464 0079 or send us an email with a short description of the job.
Aftercare tips
Once the sealant has cured, a few habits help it last:
- Fix overflowing gutters above sealed joints
- Have failed joints looked at early
- Never let anyone fill a movement joint with mortar
- Clear growth from the base of walls and joints
Have a quick look at the joints each spring. Splits, gaps at the edges or plants in the joint are early warning signs.
Act while the splits are small. At that stage it’s a simple cut out and reseal.