Medway · England
Upper Halling External Mastic
External mastic in Upper Halling from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Leaking joints around cladding and façade panels
- Rigid filler in a joint that should flex
- Cracked joints where brick meets render or frames
Upper Halling questions
Do you cover Upper Halling for external mastic?
Yes. We work across London and the South East, and Upper Halling is part of that. You can phone 0345 464 0079 or send us an email and let us know what needs doing, and we will give you a clear price.
Will you come out to Upper Halling?
Yes, smaller places are covered as well as towns. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Will there be a smell?
Possibly a little. Any smell clears as the sealant cures.
Can you match the colour of my brickwork?
Exterior sealants are made in a range of colours, from greys and browns to whites and stone shades. We choose the closest to your brick or render.
Do I need to be at home?
We need access to the joints, so we’ll agree that with you when we book. For inside work, that normally means someone being in.
Are you an approved applicator?
Yes. Mr Mastic is an ARBOMaster approved applicator.
I’m a tenant. Can you help?
Yes, but check with your landlord or agent first. Landlords are often happy for the work to be arranged.
What sealant do you use?
Quality sealants from brands including Arbo and Everbuild, picked for each joint. We explain the product when we quote.
How we handle external mastic in Upper Halling
A movement joint is a deliberate break that lets a wall expand and contract. The sealant in it has to stretch and squeeze for years, so once it splits or hardens, the joint stops working and water gets in. We are often asked to deal with weathered mastic that no longer stretches and rigid filler in a joint that should flex, on façade panels, concrete & block and brickwork movement joints.
In a village or hamlet like Upper Halling, older cottages and farm buildings often stand in the open, so walls and rooflines take the full force of wind and rain. Joints on those walls need a sealant that moves with the building and stays in place.
Every job is covered by our one-year guarantee, wherever you are in Medway.
- Where
- Upper Halling (ME2)
- Wider area
- Medway
- Guarantee
- 12 months on all our work
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Common problems we fix in Upper Halling
UV, rain and frost all age exterior sealant. Over the years it hardens, cracks on the surface and loses its give, so the joint eventually tears or comes away from one side.
People normally contact us when they notice one of these:
- Weeds or debris growing in open joints
- Failed seals between different materials
- Sealant pulling away from one side of the joint
- Water getting into walls through failed joints
Letting a property close to Halling station? Then failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Comparing quotes
- What happens if they find a problem under the old sealant
- How much experience the applicator has
- What the quote includes, VAT included or not
- What guarantee comes with the work
The process
On the day, we start by going over the job with you. Surfaces next to the work are protected before any work begins. Most jobs take anything from a few hours to several days, depending on the building. Somewhere as small as Upper Halling, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- 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.
- The joint faces are cleaned and primed where the sealant needs it.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.
How to prepare
- For business premises, tell us about site rules or sign-in
- Let us know about earlier repairs to the joints
- Where the joints are inside, avoid wetting them before we arrive
Get a quote
Asking for a quote is easy: let us know what needs doing and where, and roughly how big it is. Photos by email help us understand the job.
Related advice
What happens if it’s left?
Pointing a movement joint with mortar might seem a neat fix, but it stops the joint moving. The wall then cracks somewhere else. A flexible sealant over backing rod is what the joint needs. In a small place like Upper Halling, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
There are no prices on our website, because the cost depends so much on the job itself. For a quick quote, please ring 0345 464 0079 or drop us an email and we’ll talk you through it.
Why choose Mr Mastic in Upper Halling
- A choice of colours where the product allows
- We never seal over old sealant
- Colour agreed with you before any work starts
- Colour picked to suit the job
Take a look at how sealant jobs are priced or what customers say.
Places near Upper Halling
More services for Upper Halling
DIY sealant or a professional job?
If you are set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
What we can’t put right
New sealant cannot fix everything, and we will tell you before any work starts. Sealant won’t put right:
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Structural movement, which needs a surveyor or engineer
- Cracking across the wall rather than at a joint
If you’re not sure, just ring 0345 464 0079 or email us and we will give you a straight answer before you book.
Where we work in Upper Halling
- Joints between brick and frames
- Brickwork movement joints
- Concrete & block
- Façade panels
- Render & cladding joints
- Copings & trims
How to look after the new joints
Good habits help new joints last longer. A few tips:
- Fix overflowing gutters above sealed joints
- Check external joints each spring
- Make sure movement joints are not pointed over
- Wash walls gently around the sealant
Do not paint over the new sealant unless we have said the product is paintable. Many exterior sealants aren’t designed to be painted.
Act while the splits are small. At that stage it’s a simple cut out and reseal before water has had years to get in.
How the job changes by surface
Brickwork movement joints
Clay brickwork grows slightly over its life and moves with the weather. The movement joint takes that up, so the sealant in it must stay soft and stretchy.
Render joints
Render has movement joints and stop beads that need sealing. We reseal them with a flexible exterior sealant that suits the render colour.
Walls and rooflines in Upper Halling
Historic houses like Starkey Castle (about 1.7 miles north-east) are a reminder that the area around Upper Halling has older buildings as well as new. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material. London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For site and facilities teams at buildings such as Halling Primary School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. Homes close to Church of St John the Baptist include some older properties, and old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Upper Halling is about 4 miles south-west of Rochester, in Medway. We provide external mastic to homeowners, landlords and businesses in Upper Halling. Our Medway coverage runs to 68 places, Upper Halling among them. We also work in London, about 25 miles from Upper Halling.
All of ME2 is covered for external mastic, from the main roads to the quietest streets. That includes homes and businesses on The Street, Browndens Road and Meadow Crescent and the roads around them. Neighbouring places we cover for external mastic include Halling (1 mile north-east), Holborough (1 mile south-east), Paddlesworth (1 mile south), Wouldham (1 mile east) and North Halling (1 mile north-east). Larger places within reach include Gillingham (7 miles east), Chatham (4 miles east), Rochester (4 miles north-east), Rainham (8 miles east), Strood (4 miles north-east) and Luton (5 miles east).
Around Upper Halling
Typical jobs here are in homes near Black Boy pub, Holborough Marshes and The Holmesdale School and the streets around them. For rail, the closest station is Halling station, about 0.8 miles east of the centre. Well-known places in the area include Leybourne Castle (3.1 miles south) and St. Catherine's Hospital (4.2 miles north-east). Green spaces nearby include Blue Bell Hill and Ranscombe Farm.