Kent · England
Calcott External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for householders, landlords and businesses in Calcott. Fully insured, ARBOMaster approved and guaranteed for a year.
- Rain getting behind render or cladding at a joint
- Cracked joints where brick meets render or frames
- Failed sealant between panels on a façade
How we handle external mastic in Calcott
A movement joint is only as good as its depth. Backing rod controls how deep the sealant goes and keeps it off the back of the joint, so it bonds to the two sides only and can stretch. We work on copings & trims, joints between brick and frames and render & cladding joints, and the jobs we see most are damp patches traced to an open external joint and joints with sealant missing in places.
Outside joints can only be sealed when they’re dry, so work in Calcott is booked around the forecast. Let us know about access to every wall, plus any garages or outbuildings.
We guarantee the work for a year. If something isn’t right with it in that time, tell us and we’ll put it right.
- Location
- Calcott (CT3)
- Wider area
- Kent
- Cover
- A year, on every job
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Walls and rooflines in Calcott
Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Letting a property close to Sturry station? Then failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Calcott is about 3 miles south of Herne Bay, in Kent. Anywhere in CT3, we cover external mastic for homes and businesses. We cover 922 towns and villages across Kent. Our Chelmsford page covers work nearby.
Work in CT3 works the same way as everywhere else we cover. We also cover the places around Calcott: Hicks Forstal (1 mile north-east), Broad Oak (1 mile south), Sturry (1 mile south), Herne Common (1 mile north) and Westbere (2 miles south-east). Further out, we also cover Canterbury (3 miles south-west), Margate (12 miles east), Dover (15 miles south-east), Ramsgate (13 miles east), Broadstairs (14 miles east) and Whitstable (4 miles north-west).
Local landmarks in Calcott
Around Calcott, our work takes us to homes and buildings near Frank Montgomery School, Spires Academy and Curtis Wood. The closest station to Calcott is Sturry station, roughly 1.5 miles south. Well-known places in the area include Canterbury Castle (3.8 miles south-west) and St Martins Hospital (3.2 miles south). The countryside around Calcott includes West Blean and Thornden Woods.
Quotes for external mastic in Calcott
Some jobs are bigger than they look, and some smaller. What affects the quote:
- The amount of work
- Any working-time requirements on site
- Whether old sealant or filler has to be cut out
- Whether there’s mould to deal with
Every job is a little different, so each one gets its own quote. Size, access and the product the joint needs all make a difference, and we’ll explain the quote if you ask.
What we need to know
What to tell us when you ask for a quote:
- What’s wrong with the joints now
- The address or postcode of the job
- Access, such as stairs, a lift or height
- Any previous sealing or DIY work
For external mastic in Calcott, call 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and we’ll agree the price before any work begins.
How to look after the new joints
After the cure time, these simple habits help:
- Avoid pressure-washing directly into sealant joints
- Show decorators and builders where the movement joints are
- Keep movement joints as flexible joints, not mortar
- Look over the joints every year, ideally after winter
If you have more work done on the wall, such as new render, cladding or an opening, show the contractor the movement joints. They should be kept open and resealed, not filled.
If you can see gaps, plants or bare sections in a joint, have it checked. Early work is quicker and leaves a better finish.
Towns and villages near Calcott
Other services in Calcott
DIY versus a professional finish
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
A DIY attempt doesn’t rule out a professional job. We remove it and do the joint properly.
What sealant work cannot fix
We’d rather tell you now than do work that will not last, so these are the limits:
- Subsidence or other structural problems
- Cutting new joints into brickwork, which is building work rather than sealant work
- Failed render or damaged cladding panels
If you’re not sure, just call 0345 464 0079 or drop us an email and we will give you a straight answer before booking.
Joints and surfaces we work on
- Render & cladding joints
- Façade panels
- Joints between brick and frames
- Concrete & block
- Copings & trims
- Brickwork movement joints
Work for landlords, hotels and businesses
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements and we will quote.
We also work for property managers and facilities teams. Several sites can go on one quote.
FAQs for Calcott
Is Calcott within the area you cover?
Yes, Calcott is covered. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Is Calcott in your area for external mastic?
Yes, Calcott is within the area we cover. Our work covers London and the South East. You can ring 0345 464 0079 or drop us an email and tell us what needs doing, and we will give you a clear quote.
Can I add another job to the visit?
Yes. More than one area can go on one quote.
What sealant do you use?
It depends on the joint: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. We use products from Arbo and Everbuild.
Is it messy?
Very little: the area around the joints is protected first, and we clear up the old sealant and our materials before we leave.
Is it worth trying it myself?
Some simple jobs can be done by a careful DIYer. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
When will the joints need doing again?
It depends on the exposure, the movement and the product. Sealant is a maintenance item, so check the joints once a year.
How long should I leave it?
It depends on the product and the conditions. Before we leave, we will tell you the cure time.
What happens on the day
At the end, we look at the finished work together and explain the cure time. The work normally takes anything from a few hours to several days, depending on the building, depending on the size of the job. Somewhere like Calcott needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- Each joint is checked and the colour of the new sealant agreed.
- Failed sealant is removed back to clean, sound faces.
- Backing rod goes in so the sealant can stretch between the two faces.
- Primer is applied wherever the sealant needs it.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Preparing for the visit
- Let us know about parking restrictions
- Mention any sign-in or site rules at work premises
- Mention any leaks or damp you’ve noticed
Get a quote
Need a quote? Please call 0345 464 0079 or drop us an email and tell us about the job. You’ll know what we plan to do, and what it will cost, before any work begins.
Related advice
Signs you need external mastic in Calcott
Sometimes a movement joint was filled with mortar or a rigid filler by mistake. With the joint locked solid, the movement turns into cracks elsewhere in the wall.
These are the problems we are asked about most:
- Sealant pulling away from one side of the joint
- Gaps where render, brick and frames meet
- Moss and dirt in joints with no sealant left
- Movement joints filled with mortar instead of sealant
Schools such as Sturry Church of England Primary School are buildings too, and its movement joints, gutters and trims need looking after like any other building’s.
Questions to ask before booking
- How much experience the applicator has
- What the quote includes, VAT included or not
- Which colour the sealant will be
- How the surfaces are prepared before sealing