Kent · England
Sarre External Mastic
We cover Sarre for sealing brickwork movement joints, render, cladding and façade joints. Old material cut out, joints cleaned and sealed neatly and a one-year guarantee.
- Old sealant gone brittle and cracked
- Movement joints with cracked, split or missing sealant
- Failed seals between different materials
External mastic in Sarre
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, leaving it bonded to two faces so it can move with the wall. We are often asked to deal with sealant that has lost its bond to the brick or render and failed sealant between panels on a façade, across brickwork movement joints, joints between brick and frames and façade panels.
Outside joints can only be sealed when they’re dry, so work in Sarre is booked around the forecast. Let us know about access to every wall, plus any garages or outbuildings.
Every job is covered by our one-year guarantee.
- Location
- Sarre (CT7)
- Region
- Kent
- Cover
- A year, on every job
- Quotes
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Signs you need external mastic in Sarre
Joints sealed without backing rod, or far too deep, rarely last. If the sealant sticks to the back as well as the sides, it cannot stretch and rips as the joint opens.
Any of these means the joints need attention:
- Weeds or debris growing in open joints
- Failed sealant between panels on a façade
- Rain getting behind render or cladding at a joint
- Hard, crazed mastic that has stopped moving
If you look after a building such as St Nicholas At Wade Church of England Primary School, its movement joints, gutters and trims need looking after like any other building’s.
What to look for in a quote
- How the joint is cleaned and prepared
- What product goes in the joint
- What the quote includes, VAT included or not
- Is the old sealant removed completely?
When it is not the sealant
We’ll always be straight with you, so here’s what sealant can’t fix:
- Subsidence or other structural problems
- Cracks in the bricks or render themselves, away from the joints
- Damp that is not coming from the joint
If in doubt, phone 0345 464 0079 or drop us an email and we’ll say what we think.
Where we work in Sarre
- Brickwork movement joints
- Concrete & block
- Render & cladding joints
- Façade panels
- Joints between brick and frames
- Copings & trims
How the visit works
The work is kept neat and contained to the area we are working on, so you can carry on as normal. Expect the work to take anything from a few hours to several days, depending on the building, and we tell you how long to leave it before we go. In a small place like Sarre, access is normally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- First we look over the joints with you, agree which to renew and talk through access.
- Old sealant and any debris are cut and raked out.
- The joint faces are cleaned and primed where the sealant needs it.
- Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
- The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.
Getting ready for the visit
- Let us know about earlier repairs to the joints
- Mention any parking rules near the property
- Where the joints are inside, avoid wetting them before we arrive
Ask for a quote
Every job is quoted individually, so start by telling us what you need. Simply call 0345 464 0079 or drop us an email and describe the job.
Advice
How we quote for external mastic
Every job gets its own quote. These are the things that affect it:
- The type of sealant required
- The size of the job
- Any working-time requirements on site
- Whether old sealant or filler has to be cut out
Homes and businesses are quoted the same way: the amount of work, the access and the products needed, plus any working-time requirements on site. Call for a quick quote and we’ll explain what it covers.
What we need to know
To help us quote quickly, let us know:
- The problem you’ve noticed
- Access, such as stairs, a lift or height
- If someone has resealed it before
- The address or postcode of the job
Need a quote? Please call 0345 464 0079 or email us and tell us about the job. You’ll know what we plan to do, and what it will cost, before any work begins.
What the job involves on each surface
Brickwork movement joints
Brick moves with heat and moisture, and grows a little over time. The movement joint takes that up, so the sealant in it must stay soft and stretchy.
Render joints
Rendered walls have joints at beads, openings and changes of material. They’re resealed in a sealant that suits the render.
FAQs for Sarre
Does the coastal weather in Sarre affect outside sealant?
Near the sea, outside joints face more wind, rain and salt than they would inland, so the choice of sealant and the preparation matter even more. It’s worth checking the walls that face the sea first.
Do you work for landlords with property near Minster station?
Yes. We work for landlords and letting agents as well as householders. Just phone 0345 464 0079 or drop us an email with the address and what needs doing, and we will give you a clear quote.
Can a movement joint be filled with mortar?
No. A mortar-filled joint can’t move, so the wall cracks somewhere else instead. It needs a flexible sealant over backing rod.
How long will you be here?
It depends on the size of the job, but most jobs take anything from a few hours to several days, depending on the building. We’ll give you a better idea when we quote.
How do I get a quote for external mastic in Sarre?
Every job is different, so each one gets its own quote. To get one, ring 0345 464 0079 or drop us an email and let us know what needs doing and where.
Will there be a smell?
Possibly a little. Any smell clears as the sealant cures.
Is the work guaranteed?
Yes, for a year. If anything is not right with the work within the year, let us know and we’ll sort it.
What do you put in the joint?
It depends on the joint: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. We use products from Arbo and Everbuild.
Other services in Sarre
Looking after it afterwards
No joint lasts for ever, but care makes a real difference. Our tips:
- Walk round the building once a year and look at the joints
- Keep high-pressure jets off the joints
- Tell anyone working on the walls about the movement joints
- Ask before painting over external sealant
Keep the joints clear of soil, plants and climbing growth. Damp material against the sealant shortens its life.
Once a joint can’t move, the wall finds another way, usually as cracking in the brickwork or render nearby. Catch it early and you reduce the risk.
Why act early in Sarre
Running new sealant over the old bead rarely lasts. New sealant doesn’t bond well to old, weathered sealant, so the old joint is cut out fully first. Older cottages and farmhouses around Sarre can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Leaving a failed joint usually makes the job bigger, not smaller, as water and mould keep getting in. If you are unsure, call 0345 464 0079 or drop us an email for an honest opinion and a quote.
Why book with us
- White, clear, grey or another colour, product permitting
- We agree the colour with you first
- Every job guaranteed for a year
- Neat joints and a tidy finish
Take a look at our cost guide and customer reviews.
External mastic in Sarre: local notes
Sarre is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. That is hard on movement joints and outside wall joints, especially on the side facing the sea. With historic houses such as Quex Park (about 4.1 miles north-east) nearby, there’s older building stock in the area around Sarre as well as newer homes. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth.
Letting a property close to Minster station? Then outside joints that have cracked can let damp into a rental, so check them between lets. In the older streets around Church of Saint Nicholas, old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Sarre is about 5 miles south-east of Herne Bay, in Kent. Sarre gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Our Kent coverage runs to 922 places, and Sarre is one of them. You can also see our page for Chelmsford, roughly 42 miles from Sarre.
Here we cover the CT7 postcode area for external mastic. Local streets include Island Road, Old Road and Chantry Park, all of which we cover. We also cover the places around Sarre: St Nicholas at Wade (1 mile north-east), West Stourmouth (1 mile south), East Stourmouth (2 miles south), Monkton (2 miles east) and Upstreet (2 miles south-west). Within a short drive, we also cover Canterbury (8 miles south-west), Margate (7 miles north-east), Dover (14 miles south), Ramsgate (7 miles east), Broadstairs (8 miles east) and Whitstable (9 miles west).
Around Sarre
Locally, jobs take us to homes and businesses close to Grove Ferry Picnic Area and Kings Head Inn and the streets around them. The closest station to Sarre is Minster station, about 3.5 miles east of the centre. Other landmarks nearby include Powell-Cotton Museum (3.8 miles north-east).