Hampshire · England
External Mastic in Hill Brow
Sealing brickwork movement joints, render, cladding and façade joints for homes and businesses in Hill Brow and across Hampshire. Fully insured, ARBOMaster approved and guaranteed for a year.
- Rain getting behind render or cladding at a joint
- Panel joints letting water in
- Old sealant gone brittle and cracked
Work for landlords, hotels and businesses
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Resealing at the right time is simple maintenance that we can handle for you.
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements and we’ll give you a quote.
How we handle external mastic in Hill Brow
As ARBOMaster approved applicators, we choose exterior sealants to suit the joint and the surfaces. Some surfaces need a primer before sealing and we use one wherever it does. If you’re dealing with sealant pulling away from one side of the joint and moss and dirt in joints with no sealant left, we can help, on render & cladding joints, brickwork movement joints and concrete & block alike.
Somewhere as small as Hill Brow, homes and farm buildings often face open ground, where walls and rooflines take the weather head on. Joints on those walls need a sealant that moves with the building and stays in place.
There’s a 12-month guarantee on every job, large or small.
- Where
- Hill Brow (GU33)
- Wider area
- Hampshire
- Guarantee
- A year, on every job
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
How we quote for external mastic
Jobs vary more than people expect. The main factors:
- The number of rooms or windows
- When we can work, for business premises
- Whether there’s mould to deal with
- How much old sealant there is and how hard it is to remove
Leaving a failed joint normally makes the job bigger, not smaller, as water and mould keep getting in. If you’re not sure whether it needs doing, ring 0345 464 0079 or email us and we’ll give you an honest view and a quote.
Asking for a quote
When you contact us, it’s useful to know:
- Where the property is
- The type of property
- Access, such as stairs, a lift or height
- What the problem is, such as mould, gaps, leaks or cracking
Asking for a quote is easy: tell us what needs doing and where. Photos by email help us understand the job.
DIY versus a professional finish
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions.
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it does not work out, we can still put it right.
What happens on the day
There is not much for you to do on the day. Point us to the joints and we will get on with it. The job generally takes a few hours for a handful of joints, longer for a whole elevation, including the tidy-up. Somewhere as small as Hill Brow, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We start by walking round the building and agreeing the joints and the access.
- 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.
- We fit closed-cell backing rod to control the depth.
- The exterior sealant is applied, tooled and checked along its length.
Preparing for the visit
- Where the joints are inside, avoid wetting them before we arrive
- Keep children and pets away from the work area
- Let us know if you’ve seen damp or leaks
Get a quote
If you are in Hill Brow and need external mastic, phone 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and you will get a clear quote before any work starts.
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Why it’s worth doing now in Hill Brow
Done well, a resealed joint is a neat, straight line that suits the wall. A rushed bead with no backing looks untidy and doesn’t last. Older cottages and farmhouses around Hill Brow can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
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. The price is agreed before we begin.
Why Hill Brow clients choose us
- Tidy, careful work
- Approved under the ARBOMaster scheme
- More than 20 years in sealant work
- A choice of colours where the product allows
See what affects the cost and what customers say.
Do you need external mastic in Hill Brow?
A lot of failed joints come down to preparation: joint faces that were dusty or damp, unprimed where they needed it, or still carrying old sealant. The new sealant then lets go long before it should.
It’s worth asking for a quote if you see:
- Movement joints filled with mortar instead of sealant
- Panel joints letting water in
- Gaps where render, brick and frames meet
- Water getting into walls through failed joints
If you look after a building such as Liss Junior School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
What your quote should include
- What the quote includes, VAT included or not
- How the joint is cleaned and prepared
- Is the old sealant removed completely?
- How long to leave it before use
FAQs for Hill Brow
Can you do external mastic in Hill Brow?
Yes, Hill Brow is within the area we cover. Our work covers London and the South East. Just ring 0345 464 0079 or send us an email with a few details of the job.
Will you come out to Hill Brow?
Yes, we do. We work across London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
I rent my home. Can I book you?
We can work for tenants, landlords or agents. Just make sure your landlord agrees.
Are you an approved applicator?
Yes. We are approved under the ARBOMaster scheme, the approved applicator scheme for Arbo sealants.
Can you quote for more than one area?
Yes. More than one area can go on one quote.
What’s an expansion joint in brickwork?
A movement joint is a planned break in the wall that absorbs expansion and shrinkage. It’s sealed with a flexible sealant, not mortar.
Are you insured?
Yes, we’re fully insured for domestic and commercial work.
Should I try DIY first?
You can, for simple jobs. Preparation is everything: all the old sealant out, and a clean, dry joint. If it does not work out, we can redo it.
Walls and rooflines in Hill Brow
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Rented homes near Liss station change hands often, and split movement joints are easy to miss on a rental until damp shows inside. In the older streets around Rake Mission Church, an extension built onto an older house moves differently, and the joint between them takes the strain.
Hill Brow is about 3 miles north-east of Petersfield, in Hampshire. Across the GU33 area, we can carry out external mastic at your property. We cover 683 towns and villages across Hampshire, from the larger towns to small villages. We also work in Portsmouth, about 18 miles from Hill Brow.
All of GU33 is within our area for external mastic, from the main roads to the quietest streets. You will find streets such as London Road, Plantation Road and Malvern Road, and we cover them all. With the B2070 close by, Hill Brow is easy for our applicators to reach for external mastic. We also cover the places around Hill Brow: Durford Wood (1 mile west), Liss (1 mile north-west), West Liss (1 mile north-west), Rake (1 mile north-east) and The Mint (1 mile north). We also work in nearby towns such as Havant (13 miles south), Horndean (10 miles south-west), Alton (9 miles north-west), Waterlooville (12 miles south-west), Petersfield (3 miles south-west) and Purbrook (13 miles south-west).
Around Hill Brow
Around Hill Brow, our work takes us to homes and buildings near Whistle Stop pub. Hill Brow’s nearest station is Liss station, roughly 1.1 miles north-west. Other landmarks nearby include Bear Museum (3.4 miles south-west) and Petersfield Community Hospital (3.5 miles south-west). Open spaces near Hill Brow include Liss Riverside Railway Walk South and Wheatham Hill.
Nearby places to Hill Brow
More services for Hill Brow
Aftercare tips
Looking after new joints is easy, and it makes a real difference:
- Keep high-pressure jets off the joints
- Walk round the building once a year and look at the joints
- Keep movement joints as flexible joints, not mortar
- Keep water from gutters off the wall
Only paint over the joint if we have confirmed the sealant can take paint. Many exterior sealants are not designed to be painted.
An open movement joint lets rain into the wall every time it pours. That can lead to damp patches, staining and frost damage, all bigger jobs than a reseal.