Kent · England
Dover External Mastic
Problem with your movement joints in Dover? We cut out the old, prepare the joints and apply the right sealant, with a 12-month guarantee.
- Joints with sealant missing in places
- Panel joints letting water in
- Cracked joints where brick meets render or frames
About our external mastic in Dover
Getting the depth right is half the job. 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 render & cladding joints, façade panels and copings & trims, and people most often call us about rain getting behind render or cladding at a joint and gaps where render, brick and frames meet.
Dover mixes older houses and their gutters with newer estates of brick, render and uPVC trims. All of those joints move, so they need a flexible sealant rather than a rigid filler.
You’re covered for a year from the day we finish. If anything is not right with it, call 0345 464 0079 or email us.
What we’re called out for in Dover
The wrong product in a moving joint is a classic cause. A stiff, general-purpose sealant cannot cope with a joint that moves a lot, so it pulls away from the edges.
Any of these means the joints need attention:
- Joints where the bead has come unstuck
- Joints with sealant missing in places
- Panel joints letting water in
- Movement joints filled with mortar instead of sealant
Managing a site like Shatterlocks Infant School? Then its movement joints, gutters and trims need looking after like any other building’s.
What your quote should include
- Is the old sealant removed completely?
- What happens if the job turns out different
- What the cure time is
- Is VAT in the price?
External mastic in Dover: local notes
Dover is within about 2 miles of the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. That’s hard on movement joints and outside wall joints, especially on the side facing the sea. Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For landlords with property near Dover Priory station, split movement joints are easy to miss on a rental until damp shows inside. In the older streets around Parish Church of St Andrew Buckland, the joints between older walls, newer extensions and the roofline need a sealant that can move.
Dover is in Kent. Every kind of property in Dover is covered for external mastic, old or new, large or small. Every job comes with our 12-month guarantee. Dover is one of 922 places in Kent we cover. Chelmsford is on our list too, around 54 miles away.
Here we cover the CT17, CT16, CT15 and CT14 postcode area for external mastic. If you need external mastic at a property on London Road, High Street and Church Road or a nearby road, we can help. Main roads around Dover include the A2 and A20, which makes travel easy. We also cover the places around Dover: River (1 mile north-west), Maxton (1 mile south), Kearsney (1 mile north-west), Whitfield (1 mile north) and Temple Ewell (2 miles north-west). Within a short drive, we also cover Canterbury (14 miles north-west), Folkestone (7 miles south-west), Ramsgate (15 miles north), Deal (7 miles north-east), Hythe (11 miles south-west) and Walmer (6 miles north-east). Dover is among the bigger towns we cover in Kent.
Local landmarks in Dover
Locally, jobs take us to homes and businesses close to Connaught Park, The Bull pub and St Edmund's Catholic School, among other places. Dover’s nearest station is Dover Priory station, roughly 0.9 miles south of the centre. Well-known places in the area include Dover Castle (1.3 miles south-east) and Crabble Corn Mill (0.7 miles west). Open spaces near Dover include Dover Western Heights.
What happens if it’s left?
A low-modulus sealant is chosen because it moves without pulling hard at the edges. That protects surfaces like brick, render and concrete. Too stiff a sealant can pull at the edges and break them. Draughts from a gap round a frame, damp under a sill or water behind a bath panel all start small, and early is when they’re cheapest and quickest to sort.
No two jobs are quite the same, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all play a part, and we will explain the quote if you ask.
Why book with us
- A choice of colours where the product allows
- Arbo and Everbuild products
- An ARBOMaster approved applicator
- Colour picked to suit the job
Read what affects the cost or our reviews.
What affects the quote in Dover
Some jobs are bigger than they look, and some smaller. The main factors:
- When we can work, for business premises
- How many rooms, windows or areas are involved
- Whether old sealant or filler has to be cut out
- The number and length of the joints
The cost reflects the work involved, not guesswork. That is why we ask about the job first and send you a clear quote before any work starts.
What we need to know
What to tell us when you ask for a quote:
- Whether it has been sealed before
- What’s wrong with the joints now
- Roughly how big the job is
- Access, such as stairs, a lift or height
If you’re in Dover and need external mastic, phone 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and we will agree the price before any work begins.
Aftercare tips
Once the sealant has cured, a few habits help it last:
- Walk round the building once a year and look at the joints
- Have failed joints looked at early
- Ask before painting over external sealant
- Wash walls gently around the sealant
Look over the joints once a year, ideally after winter. Watch for splits, edges coming away or growth in the joint.
Act while the splits are small. At that stage it’s a simple cut out and reseal with no damage behind it to deal with.
Should I try it myself first?
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and doesn’t move well, and the joint depth matters as much as the finish.
Sealing over old silicone is the commonest DIY error. New silicone won’t bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
How the visit works
Every visit runs the same way: we look at the joints together, protect the area around them, carry out the job and clear up. Most jobs take a few hours for a handful of joints, longer for a whole elevation. For a job in Dover, we need access to where the work is and somewhere nearby to park. For outside work, let us know about side access, gates and any upper-floor joints.
- We inspect the joints and agree which need resealing and how they’ll be reached.
- The old mastic and anything lodged in the joint is removed.
- We clean both faces of the joint and prime them where the product calls for it.
- Backing rod goes in next, setting the depth and keeping the sealant off the back of the joint.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
Before we arrive
- Tell us about any water getting in
- For indoor joints, keep the area dry beforehand if you can
- Move anything stored near the joints
How to get a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is. When it suits you, call 0345 464 0079 or email us.
Related advice
Different surfaces, different methods
Concrete and blockwork
Big joints in concrete need careful depth control. Backing rod sized to the joint sets it so the sealant is not too deep.
Joints between dissimilar materials
Joints where frames, sills or panels meet the wall are common leak points. We cut out the old sealant and reseal with a product suited to both surfaces.
FAQs for Dover
Is Dover in your area for external mastic?
Yes. We work across London and the South East, and Dover is part of that. Just call 0345 464 0079 or send us an email with a few details of the job, and we will send you a clear quote.
I let a flat near Dover Priory station. Can you help?
Yes, landlords and agents are among the people we work for. You can call 0345 464 0079 or send us an email with the details for a clear quote.
How long should I leave it?
Cure times vary by product. Before we leave, we’ll tell you the cure time.
Do you use backing rod?
We fit closed-cell backing rod wherever the joint depth needs controlling. It sets the sealant depth and prevents three-sided bonding so the bead can stretch.
Can you seal joints between render and window frames?
Yes. Where different materials meet is one of the most common joints we seal. We use a flexible sealant suited to both surfaces with primer where required.
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.
Can I add another job to the visit?
Yes. Just list everything you need.
Do you have insurance?
Yes. We’re fully insured.