Kent · England
External & façade joints in Lower Hartlip, Kent
Specialist external mastic for Lower Hartlip: careful preparation, the right product and tidy work. Call for a quick quote.
- Sealant pulling away from one side of the joint
- Damp patches traced to an open external joint
- Gaps where render, brick and frames meet
What we can’t put right
Before booking, it’s worth knowing the limits too:
- Cracked brickwork or render that needs a builder or plasterer
- Rising or penetrating damp from elsewhere in the wall
- Loose or hollow render, which needs re-rendering
If in doubt, call 0345 464 0079 or email us and we will say what we think before you book.
Joints and surfaces we work on
- Concrete & block
- Façade panels
- Copings & trims
- Joints between brick and frames
- Brickwork movement joints
- Render & cladding joints
About our external mastic in Lower Hartlip
Ground-floor and low-level joints are straightforward to reach. For joints higher up, give us some details of the building and we will confirm what access is needed. If you have weathered mastic that no longer stretches and movement joints filled with mortar instead of sealant, we can put it right, whatever the surface.
External sealant needs dry, clean surfaces, so work around Lower Hartlip is planned for dry weather. Let us know about access to every wall, plus any garages or outbuildings.
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.
- Location
- Lower Hartlip (ME9)
- Wider area
- Kent
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Lower Hartlip buildings and the weather
Lower Hartlip is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That is 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 an older house near a landmark such as Church of St Michael, an extension built onto an older house moves differently, and the joint between them takes the strain. Schools such as Hartlip Endowed Church of England Primary School are buildings too, and larger buildings have long runs of movement joint that eventually need resealing. For landlords with property near Newington station, failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Lower Hartlip is about 3 miles south-east of Gillingham, in Kent. We carry out external mastic for householders, landlords and businesses in Lower Hartlip and the surrounding area. 922 places in Kent are on our list, from the larger towns to small villages. For nearby work, see our Chelmsford page.
Jobs for external mastic in ME9 works the same way as everywhere else we cover. We cover properties on Lower Hartlip Road, Grainey Field and Old House Lane. Nearby, we also carry out external mastic in Hartlip (1 mile west), Breach (1 mile north-east), Newington (1 mile east), Moor Street (1 mile north-west) and Meresborough (1 mile west). Larger places within reach include Maidstone (8 miles south-west), Sittingbourne (4 miles east), Gravesend (13 miles north-west), Faversham (11 miles east), Northfleet (14 miles north-west) and Minster (8 miles north-east).
Local landmarks in Lower Hartlip
In Lower Hartlip, that means homes and buildings near Foxburrow Wood and Leigh Academy Rainham and the streets around them. The nearest railway station is Newington station, about 1.1 miles north-east. Nearby you will also find Court Hall Museum (3.8 miles east) and Bayford Court (4.3 miles east). Green spaces nearby include Detling Hill and Bishop Saltings.
Looking after it afterwards
Once the sealant has cured, a few habits help it last:
- Never let anyone fill a movement joint with mortar
- Keep soil, plants and ivy away from the joints
- Keep high-pressure jets off the joints
- Show decorators and builders where the movement joints are
Keep pressure washers away from the sealant. High-pressure water can lift the edges over time.
If you can see gaps, plants or bare sections in a joint, have it checked. Early work is quicker and leaves a better finish.
Common questions in Lower Hartlip
Is Lower Hartlip within the area you cover?
Yes, smaller places are covered as well as towns. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Does the coastal weather in Lower Hartlip affect outside sealant?
Coastal homes put outside sealant through more weather than inland ones, so preparation and the right sealant matter all the more. Walls facing the sea are usually the first to need attention.
Can you reach joints on upper floors?
That depends on how high the joints are and the ground below. Low-level joints are straightforward; for higher ones, send details and we’ll confirm the access.
Do you take out the old sealant first?
Yes, always, and completely. New silicone does not stick to old silicone, so any old material comes out before anything new goes in.
I rent my home. Can I book you?
We’re happy to deal with the tenant, landlord or agent. Get your landlord’s agreement first.
Can you quote for more than one area?
Yes. More than one area can go on one quote.
Can you seal over the old sealant?
No, it will not last. It may look fine at first, but the new layer lifts away from the old one. The old sealant has to come out completely.
Can landlords and businesses book you?
Yes. As well as householders, we work for landlords, agents, businesses and hotels across Kent.
What affects the quote in Lower Hartlip
Your quote is based on your job. We take into account:
- The number and length of the joints
- Any working-time requirements on site
- How many rooms, windows or areas are involved
- How much old sealant there is and how hard it is to remove
Rather than a set price list, we look at what your job involves: how many joints, what’s in them now and how we reach them. You’ll know the price before we begin.
What we need to know
What to tell us when you ask for a quote:
- If it’s domestic, commercial or a hotel
- The address or postcode of the job
- Any previous sealing or DIY work
- What’s wrong with the joints now
For a quote, phone 0345 464 0079 or drop us an email and tell us where the job is and what the problem looks like. We’ll give you a clear price before any work starts.
Why act early in Lower Hartlip
Resealing a run of joints in one go is normally better than patching one at a time. Joints of the same age tend to fail together. Older cottages and farmhouses around Lower Hartlip can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Doing several joints on one visit generally makes better use of the time than several visits, so tell us about everything that needs sealing. We will send you a clear quote for the lot.
Why choose Mr Mastic in Lower Hartlip
- Full insurance on every job
- Sealant colour chosen to suit
- Rated 4.9 stars on Google
- You choose the colour before work begins
Read what affects the cost and what customers say.
What we do, step by step
Good joint work is mostly preparation, so that is where we spend the time. Every joint is cleaned and dried before new material goes in. In total, it generally takes a few hours for a handful of joints, longer for a whole elevation. In a small place like Lower Hartlip, access is normally 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.
- Failed sealant is removed back to clean, sound faces.
- 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.
Before we arrive
- Let us know about parking restrictions
- Let us know about stairs, lifts or work at height
- Clear items away from the joints we are working on
Get a quote
Getting a quote is simple: let us know the job and the location and its rough size. Photos by email help us understand the job.
Read more
Work for landlords, hotels and businesses
Hotels need rooms back in use, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
If you manage several properties in or around Lower Hartlip, several properties can be quoted together. Just tell us the addresses and what each one needs, and photos by email help.
Different surfaces, different methods
Cladding and façade panels
Panels heat up and cool down quickly, so the joint sealant has to cope with frequent movement. The sealant is chosen with that in mind.
Concrete and blockwork
The face of concrete or block is often dusty, so preparation is key. We prime where the sealant needs it before the bead.