Medway · England
External Mastic in North Halling
Movement joints in North Halling need attention? We cut out the old, prepare the joints and apply the right sealant, with a 12-month guarantee.
- Joints where the bead has come unstuck
- Plants rooting in failed movement joints
- Failed sealant between panels on a façade
External mastic in North Halling, done properly
Getting the depth right is half the job. Closed-cell backing rod sets the depth and stops the sealant sticking to the back, leaving it bonded to two faces so it can move with the wall. We are often asked to deal with joints where the bead has come unstuck and weathered mastic that no longer stretches, across joints between brick and frames, façade panels and concrete & block.
External sealant needs dry, clean surfaces, so work around North Halling is planned for dry weather. Let us know about access to every wall, plus any garages or outbuildings.
The work is covered for a year after we finish. If anything is not right with it, ring 0345 464 0079 or email us.
- Where
- North Halling (ME2)
- Region
- Medway
- Cover
- One year on every job
- Quotes
- A clear price before we start
- Call
- 0345 464 0079
- Updated
- 26 October 2026
DIY versus a professional finish
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
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.
FAQs for North Halling
Do you cover North Halling for external mastic?
Yes, North Halling is within the area we cover. Our work covers London and the South East. You can call 0345 464 0079 or email us and tell us what needs doing, and we will send you a clear quote.
Is North Halling within the area you cover?
Yes, North Halling is covered. Our work covers London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
How do I get a quote for external mastic in North Halling?
The cost depends on the size of the job, access and how much old sealant has to come out. Ask us for a quote.
What is a movement joint?
A movement joint is a planned break in the wall that absorbs expansion and shrinkage. It should be filled with flexible sealant, never mortar.
Are you an approved applicator?
Yes. We hold ARBOMaster approved applicator status, and we’re fully insured.
Will it make a mess?
No. We protect the surfaces around the joints, and we tidy up before we go.
Can a movement joint be filled with mortar?
No. A mortar-filled joint can’t move, so the movement cracks the wall elsewhere. It needs a flexible sealant over backing rod.
Can you reach joints on upper floors?
Each building is different. Send us photos and a rough idea of the height.
When something else is needed
Sealant isn’t the answer to every problem, and we will tell you before any work starts. It won’t solve:
- Adding movement joints to masonry that has none
- Loose or hollow render, which needs re-rendering
- Subsidence or other structural problems
If you’re not sure, just phone 0345 464 0079 or email us and we will give you a straight answer before you book.
What we seal
- Joints between brick and frames
- Façade panels
- Render & cladding joints
- Brickwork movement joints
- Concrete & block
- Copings & trims
How it works
There’s no need to move everything out before we come, only the area right around the joints. We protect the rest, and the work takes anything from a few hours to several days, depending on the building for a typical job. In a small place like North Halling, access is generally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- Each joint is checked and the colour of the new sealant agreed.
- We take out the old sealant until the faces are sound.
- Backing rod goes in so the sealant can stretch between the two faces.
- Primer is applied wherever the sealant needs it.
- 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
- Mention any tricky access
- Let us know if you’ve seen damp or leaks
Get a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints.
Read more
Why deal with it now?
Running new sealant over the old bead rarely lasts. The new layer cannot bond properly to old, weathered material, so the old joint is cut out fully first. In a small place like North Halling, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
A failed joint rarely gets cheaper to fix by waiting. If you are not sure whether it needs doing, phone 0345 464 0079 or drop us an email and we’ll give you an honest view and a quote.
Why North Halling clients choose us
- We leave the area clean and tidy
- An ARBOMaster approved applicator
- Rated 4.9 stars on Google
- Sanitary silicone with an anti-fungal additive in wet areas
Read our cost guide or what customers say.
Towns and villages near North Halling
What else we do in North Halling
North Halling buildings and the weather
Historic houses like Starkey Castle (about 0.6 miles east) are a reminder that the area around North 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. Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
For landlords with property near Cuxton station, failed wall and movement joints let damp in, so they’re worth checking between tenancies. Homes close to Church of St Michael and All Angels include some older properties, and old and new materials meet at the roofline and walls, which is where sealant earns its keep.
North Halling is about 3 miles south-west of Rochester, in Medway. Jobs in North Halling get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Our Medway coverage runs to 68 places, and North Halling is one of them. Our London page covers work nearby, about 25 miles away.
Here we cover the ME2 postcode area for external mastic. If you need external mastic at a property on Bavins Court, Formby Road and Pilgrims Road or a nearby road, we can help. Nearby, we also carry out external mastic in Cuxton (1 mile north-east), Halling (1 mile south), Upper Bush (1 mile north-west), Lower Bush (1 mile north-west) and Wouldham (1 mile south-east). Further out, we also cover Gillingham (6 miles east), Chatham (4 miles east), Rochester (3 miles north-east), Rainham (7 miles east), Luton (4 miles east) and Park Wood (7 miles east).
Around North Halling
We work in homes and buildings around Nashenden Down and Sir Joseph Williamson's Mathematical School and the streets around them. The nearest railway station is Cuxton station, about 0.9 miles north-east of the centre. A little further out are Six Poor Travellers House (3 miles north-east) and Pentagon Shopping Centre (3.6 miles east). For a walk, there’s Blue Bell Hill and Ranscombe Farm.
Aftercare tips
No joint lasts for ever, but care makes a real difference. A few tips:
- Check the sealant is paintable before painting near it
- Clear growth from the base of walls and joints
- Make sure movement joints are not pointed over
- Have failed joints looked at early
Make sure anyone working on the wall later knows where the movement joints are. They must stay as flexible joints, never rendered or pointed over.
A joint that has stopped moving pushes the movement elsewhere, normally as cracking in the brickwork or render nearby. Catch it early and you reduce the risk.
What affects the cost of external mastic
We do not publish a price list, because no two jobs are the same. What we look at:
- The old material and how stubborn it is
- Access and height
- When we can work, for business premises
- Any mould that needs treating
Rather than a set price list, we price the job in front of us: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
What we need to know
What to tell us when you ask for a quote:
- The address or postcode of the job
- How we’d reach the joints
- Photos by email, if that is easy
- Whether it has been sealed before
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is. Whenever you are ready, ring 0345 464 0079 or drop us an email.
Do you need external mastic in North Halling?
Buildings move more than people expect. Brickwork grows a little over the years, blockwork and concrete shrink, and all of it moves with heat and moisture. All of that ends up in the joint sealant.
The problems people generally mention when they call are:
- Water getting into walls through failed joints
- Gaps where render, brick and frames meet
- Plants rooting in failed movement joints
- Joints where the bead has come unstuck
For site and facilities teams at buildings such as Cuxton Community Infant School, larger buildings have long runs of movement joint that eventually need resealing.
What to look for in a quote
- How much experience the applicator has
- How the joint is cleaned and prepared
- Which colour the sealant will be
- What guarantee comes with the work