Medway · England
External & façade joints in St Mary Hoo, Medway
External mastic for St Mary Hoo, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Sealant pulling away from one side of the joint
- Moss and dirt in joints with no sealant left
- Brick movement joints where the sealant has split
Your questions about external mastic in St Mary Hoo
Do you cover St Mary Hoo for external mastic?
Yes. Our work covers London and the South East, and St Mary Hoo is part of that. You can call 0345 464 0079 or send us an email and tell us what needs doing.
Is St Mary Hoo within the area you cover?
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.
Where is Mr Mastic based?
We’re based in Crawley, West Sussex, and we cover South East England, London and all of Scotland.
What is a movement joint?
It’s a deliberate gap that lets the wall expand and contract without cracking. It’s sealed with a flexible sealant, not mortar.
Is it worth trying it myself?
That depends on the joint. High-level, external movement and fire-rated joints are professional jobs, while a short indoor joint may be within reach.
Can I add another job to the visit?
Yes. Tell us about everything you’d like done and we’ll quote it together.
When is the sealant fully cured?
Different products cure at different speeds, so follow the cure time we give you when we finish.
What do you need from me for a quote?
The location, the problem and the rough size of the job. If you can, email a few pictures.
About our external mastic in St Mary Hoo
Many failed façade joints only get noticed once there’s a stain or a damp patch inside. We look over the joints, agree the ones to renew and reseal with a flexible, weatherproof product in a colour to suit. If you’re dealing with plants rooting in failed movement joints and damp patches traced to an open external joint, we can put it right.
External sealant needs dry, clean surfaces, so work around St Mary Hoo is planned for dry weather. Tell us about access to all sides of the building, including outbuildings and garages.
Our work is backed for twelve months.
- Location
- St Mary Hoo (ME3)
- Wider area
- Medway
- Cover
- One year on every job
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
How we quote for external mastic
We quote each job individually. These are the things that affect it:
- The old material and how stubborn it is
- Which sealant suits the joint
- Whether there’s mould to deal with
- How easy the joints are to reach
There are no prices on our website, because each job is priced on what it involves. For a quick quote, please ring 0345 464 0079 or send us an email.
What to tell us for a quote
You don’t need to know the technical terms. Just tell us:
- A few photos by email, if you can
- The problem you’ve noticed
- How we’d reach the joints
- Where the job is, and your postcode
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we’ll explain how we’d tackle it. When it suits you, ring 0345 464 0079 or email us.
Do you need external mastic in St Mary Hoo?
Sometimes a movement joint was filled with mortar or a rigid filler, often by someone who didn’t know what it was for. The joint can’t move, so the wall cracks somewhere else instead.
It’s worth asking for a quote if you see:
- Old sealant gone brittle and cracked
- Movement joints with cracked, split or missing sealant
- Water getting into walls through failed joints
- Joints pointed up with cement by mistake
Around St Mary Hoo, as everywhere, external mastic is only as good as the preparation behind it.
Questions to ask before booking
- How long the guarantee is
- What insurance they hold
- Whether the sealant suits the joint
- What the cure time is
Keeping the joints in good condition
Once the sealant has cured, a few habits help it last:
- Walk round the building once a year and look at the joints
- Deal with leaking gutters that soak the joints below
- Act on the first splits you see
- Do not let climbing plants root in the sealant
Make sure anyone working on the wall later knows where the movement joints are. 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.
Why it’s worth doing now in St Mary Hoo
Mortar or ordinary filler might look like a quick way to close an open joint, but it locks the joint solid. The wall then cracks somewhere else. The correct repair is a flexible sealant with the right backing. Older cottages and farmhouses around St Mary Hoo can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Every job is a little different, 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.
What you get with us
- Rated 4.9 stars on Google
- An ARBOMaster approved applicator
- Quality sealants from Arbo and Everbuild
- You choose the colour before work begins
Take a look at what affects the cost and customer reviews.
Also near St Mary Hoo
Other services in St Mary Hoo
What the job involves on each surface
Cladding and façade panels
If the façade has a specified sealant, that is what we use, or one the system allows. Send us any details you have about the façade.
Concrete and blockwork
Concrete and block walls shrink as they dry and move with temperature. We reseal their joints with backing rod and a flexible product.
When something else is needed
We will not take on work that will not last, so here’s what sealant cannot put right:
- Subsidence or other structural problems
- Cracking across the wall rather than at a joint
- Failed render or damaged cladding panels
Not sure which it is? You can ring 0345 464 0079 or email us and we’ll tell you honestly before you book.
Surfaces we seal
- Joints between brick and frames
- Façade panels
- Brickwork movement joints
- Concrete & block
- Copings & trims
- Render & cladding joints
St Mary Hoo buildings and the weather
St Mary Hoo is within about 2 miles of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. Both are hard on movement joints and outside wall joints, which can dry out and crack sooner where a building faces 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.
If you live in an older home near Church of St Mary, old and new materials meet at the roofline and walls, which is where sealant earns its keep.
St Mary Hoo is about 4 miles south of Canvey Island, in Medway. Jobs in St Mary Hoo get the same care as everywhere else we work: old sealant removed completely, careful preparation and a 12-month guarantee. We cover 68 towns and villages across Medway, from the larger towns to small villages. We also work in Chelmsford, about 20 miles from St Mary Hoo.
We work across the ME3 postcode area for external mastic and the streets around it. We also cover Fenn Street (1 mile south-west), High Halstow (1 mile south-west), Sharnal Street (2 miles south-west), Tunbridge Hill (2 miles south) and Kingsnorth (2 miles south). Further out, we also cover Gillingham (6 miles south), Chatham (8 miles south), Rochester (6 miles south-west), Rainham (7 miles south), Strood (7 miles south-west) and Luton (7 miles south).
Near you in St Mary Hoo
Well-known places in the area include Bay Museum (3.6 miles north) and Medway Maritime Hospital (6 miles south-west). The countryside around St Mary Hoo includes Bishop Saltings.
What we do, step by step
There’s no need to move everything out, only the area right around the joints. We protect the rest, and the job takes a few hours to a few days, depending on the length of joint and the access in most cases. For a village or hamlet like St Mary Hoo, the journey is planned in advance: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- Each joint is checked and the colour of the new sealant agreed.
- Failed sealant is removed back to clean, sound faces.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- We prime the faces where required.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Getting ready for the visit
- For business premises, tell us about site rules or sign-in
- Move anything stored near the joints
- Tell us about any water getting in
Ask for a quote
Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we’ll talk you through the work.