Kent · England
External & façade joints in Wrotham, Kent
External mastic for Wrotham, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Joints with sealant missing in places
- Old sealant gone brittle and cracked
- Joints where the bead has come unstuck
Why it’s worth doing now in Wrotham
A properly done movement joint is an even line in a colour that suits the wall. A rushed bead with no backing looks untidy and does not last. In a small place like Wrotham, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
No two jobs are quite the same, so we quote each one individually. Size, access and the product the joint needs all make a difference, and we’ll explain the quote if you ask.
What you get with us
- We’re fully insured
- Over 20 years’ experience
- ARBOMaster approved applicator
- Arbo and Everbuild products
See how sealant jobs are priced and our reviews.
How we handle external mastic in Wrotham
Failed sealant is cut out, the depth set with closed-cell backing rod, and the joint resealed with a low-modulus sealant made for outside. We pick a colour that sits well with the wall so the joint does not stand out. We’re often asked to deal with movement joints filled with mortar instead of sealant and gaps where render, brick and frames meet, across render & cladding joints, concrete & block and copings & trims.
Around Wrotham, older buildings can be stone, brick or timber-framed, many with extensions added later. Where one material meets another is where water normally gets in, and they need the right sealant at the right depth.
We stand behind the work with a 12-month guarantee.
- Place
- Wrotham (TN15)
- Wider area
- Kent
- Guarantee
- One year on every job
- Price
- A clear price before we start
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Wrotham questions
Will you come out to Wrotham?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Do you work for landlords with property near Borough Green & Wrotham station?
Yes, landlords and agents are among the people we work for. You can ring 0345 464 0079 or send us an email with the details for a clear quote.
Should I point up the gap in my brickwork?
No, not where the gap is a movement joint. Filling it with mortar defeats its purpose. A flexible sealant is the right fill.
Do you work at height?
That depends on how high the joints are and the ground below. Low-level joints are straightforward; for higher ones, send details and we will confirm the access.
Will you leave a mess?
Not at all. We work neatly, protect the area around the joints and tidy up afterwards.
What is a movement joint?
Walls move with heat, cold and moisture, so long walls have planned gaps to take that movement. The gap is sealed with a flexible sealant over backing rod.
Do you remove the old sealant?
Yes, always, and completely. New silicone doesn’t stick to old silicone, so the joint is cleaned back first.
Is there any odour?
There can be a smell while the sealant cures, but it fades. Ventilation helps.
Different surfaces, different methods
Copings and trims
Coping joints that leak let water straight down into the wall. Resealing them is a small job that protects a lot.
Concrete and blockwork
Big joints in concrete need careful depth control. Backing rod sized to the joint sets it.
Wrotham buildings and the weather
Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. With historic houses such as Old Soar Manor (about 3.2 miles south) nearby, there’s older building stock in the area around Wrotham as well as newer homes. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth.
For site and facilities teams at buildings such as Wrotham School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. For landlords with property near Borough Green & Wrotham station, failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Wrotham is about 6 miles east of Sevenoaks, in Kent. Wrotham gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Wrotham is one of 922 towns and villages in Kent we cover for external mastic. Our London page covers work nearby, about 22 miles away.
Postcode districts we cover here for external mastic: TN15. Whether your property is on High Street, Old London Road and West Street or anywhere close by, our applicators can take on the job. Nearby, we also carry out external mastic in Labour-in-vain (1 mile north), Fairseat (2 miles north-east), Trottiscliffe (2 miles east), Hodsoll Street (2 miles north) and Vigo Village (3 miles north-east). We also work in nearby towns such as Maidstone (10 miles east), Dartford (10 miles north), Sevenoaks (6 miles west), Royal Tunbridge Wells (12 miles south), Gravesend (9 miles north) and Tonbridge (8 miles south).
What’s near Wrotham
Typical jobs here are in homes near The George And Dragon Public House, Borough Green Primary School and Trosley Country Park and the streets around them. The nearest railway station is Borough Green & Wrotham station, about 1.1 miles south. Nearby you will also find Beechin Wood Archery Museum (2 miles south-east) and Ightham Court (1.3 miles south-west).
How it works
There’s no need to move everything out, only the area right around the joints. We protect the rest, and the work takes a few hours to a few days, depending on the length of joint and the access in most cases. Somewhere like Wrotham needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- First, the joints are inspected and the access agreed.
- Every bit of old sealant and any mortar or debris is cut out.
- Joint faces are cleaned back and primed if the sealant needs it.
- Backing rod sized to the joint goes in to set the depth.
- We apply the sealant, tool it and check the whole run.
Preparing for the visit
- Mention if the joints have been sealed before
- Move anything stored near the joints
- Keep children and pets away from the work area
Getting a quote
Every job is quoted individually. Simply phone 0345 464 0079 or email us and describe the job.
Read more
DIY versus a professional finish
Sealing over old silicone is the commonest DIY error. Silicone doesn’t stick to old silicone, so it lifts and traps water and mould underneath. All the old material has to come out first.
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
What affects the quote in Wrotham
You’ll get a clear quote before we start. It takes into account:
- The old material and how stubborn it is
- Which sealant suits the joint
- Working hours on commercial sites
- The number and length of the joints
We don’t show prices on the website, because the cost depends so much on the job itself. For a quick quote, please call 0345 464 0079 or drop us an email.
Asking for a quote
When you contact us, it’s useful to know:
- Any previous sealing or DIY work
- What the problem is, such as mould, gaps, leaks or cracking
- Roughly how big the job is
- Where the property is
For external mastic in Wrotham, ring 0345 464 0079 or drop us an email. Tell us what the problem is and where, and we will agree the price before any work begins.
What sealant work cannot fix
We will always be straight with you, so here’s what sealant can’t fix:
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Subsidence or other structural problems
- Failed render or damaged cladding panels
If in doubt, call 0345 464 0079 or send us an email and we will say what we think.
Joints and surfaces we work on
- Brickwork movement joints
- Render & cladding joints
- Joints between brick and frames
- Copings & trims
- Concrete & block
- Façade panels
When to call us in Wrotham
Joints sealed without backing rod, or far too deep, rarely last. Sealant bonded to three sides has nowhere to go and tears as soon as the joint widens.
It’s worth asking for a quote if you see:
- Old sealant gone brittle and cracked
- Joints where the bead has come unstuck
- Cracked joints where brick meets render or frames
- Rain getting behind render or cladding at a joint
For an older house near a landmark such as Church of St George, the joints between older walls, newer extensions and the roofline need a sealant that can move.
Questions to ask before you book
- Whether they’re fully insured
- Who does the work, and how experienced they are
- Whether all the old sealant comes out first
- What guarantee comes with the work