Hampshire · England
Hattingley External Mastic
External mastic for Hattingley, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Hard, crazed mastic that has stopped moving
- Cracked joints where brick meets render or frames
- Movement joints filled with mortar instead of sealant
External mastic for homes and businesses in Hattingley
Where two different materials meet, such as brick and render or blockwork and metal, they move at different rates. A flexible sealant bridges the two. If you have weeds or debris growing in open joints and damp patches traced to an open external joint, we can help.
External sealant needs dry, clean surfaces, so work around Hattingley is planned for dry weather. Let us know about access to every wall, plus any garages or outbuildings.
A 12-month guarantee comes as standard, so you’re covered after we have gone.
- Where
- Hattingley (GU34)
- Region
- Hampshire
- Guarantee
- One year on every job
- Quotes
- A clear price before we start
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Walls and rooflines in Hattingley
Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. Historic houses like Bentworth Hall (about 1.9 miles north-east) are a reminder that the area around Hattingley has older buildings as well as new. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth.
Homes close to Church of St Andrew include some older properties, and older walls, gutters and the joints where extensions meet them need a flexible sealant.
Hattingley is about 5 miles west of Alton, in Hampshire. Hattingley gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a 12-month guarantee. Our area takes in 683 places across Hampshire, large and small. There’s also a page for Southampton, roughly 20 miles from Hattingley.
We cover every part of GU34 for external mastic and the streets around it. We also cover the places around Hattingley: South Town (1 mile east), New Copse (1 mile north-east), Soldridge (2 miles south), Medstead (2 miles south-east) and Holt End (2 miles north-east). Further out, we also cover Basingstoke (9 miles north), Winchester (11 miles south-west), Fleet (15 miles north-east), Alton (5 miles east), Petersfield (11 miles south-east) and Bordon (10 miles east).
Around Hattingley
Well-known places in the area include Barton Castle (1.4 miles west) and Alton Community Hospital (4.1 miles east). The countryside around Hattingley includes King's Hill.
What sealant work can’t fix
It helps to know what we can’t do too:
- Cutting new joints into brickwork, which is building work rather than sealant work
- Failed render or damaged cladding panels
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
Not sure which it is? You can phone 0345 464 0079 or send us an email and we will tell you honestly before you book.
Surfaces we seal
- Copings & trims
- Joints between brick and frames
- Concrete & block
- Façade panels
- Render & cladding joints
- Brickwork movement joints
How the visit works
Our applicators work methodically: protect, prepare, seal, tidy. For most jobs that takes a few hours to a few days, depending on the length of joint and the access. Somewhere like Hattingley needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- First, the joints are inspected and the access agreed.
- 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
- Keep pets and children clear of the area while we work
- On commercial sites, let us know about site rules
- Try not to wet indoor joints just before the visit
Ask for a quote
If you’re in Hattingley and need external mastic, phone 0345 464 0079 or send us an email. Tell us what the problem is and where, and you’ll get a clear quote before we start.
Read more
Towns and villages near Hattingley
What else we do in Hattingley
What affects the cost of external mastic
Jobs vary more than people expect. The main factors:
- Whether the work is at height
- The size of the job
- Which sealant suits the joint
- Whether there’s mould to deal with
Combining jobs into one visit is usually more efficient than separate visits, so it’s worth mentioning everything you’d like done. You will get one clear quote for the whole job.
What we need to know
Before you ask for a quote, have a think about:
- A few pictures by email, if you can
- Any previous sealing or DIY work
- How we’d reach the joints
- The problem you’ve noticed
There’s no standard price list. Instead, we send you a clear quote for your job. To arrange one, phone 0345 464 0079 or email us.
Leave it or put it right?
Pointing a movement joint with mortar might seem a neat fix, but it stops the joint moving. The movement then cracks the brickwork or render nearby. The correct repair is a flexible sealant with the right backing. Where a wall is exposed, as many are in small places like Hattingley, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
Leaving a failed joint normally makes the job bigger, not smaller, as water and mould keep getting in. If you are unsure, call 0345 464 0079 or send us an email and we will give you an honest view and a quote.
Why Hattingley clients choose us
- White, clear, grey or another colour, product permitting
- More than 20 years in sealant work
- One-year guarantee on every job
- Tidy, careful work
Take a look at our cost guide or our reviews.
What we are called out for in Hattingley
The wrong product in a moving joint is a classic cause. A high-modulus or general-purpose sealant can be too rigid for a busy joint, and it tears off the sides.
If you can see any of these, it’s time to have the joints looked at:
- Failed sealant between panels on a façade
- Water getting into walls through failed joints
- Sealant that has lost its bond to the brick or render
- Moss and dirt in joints with no sealant left
For site and facilities teams at buildings such as Medstead Church of England Primary School, larger buildings have long runs of movement joint that eventually need resealing.
Before you book anyone
- What happens if they find a problem under the old sealant
- Are they insured?
- Is VAT in the price?
- How the surfaces are prepared before sealing
Landlords, agents and businesses in Hattingley
Housing providers, facilities teams and property managers book us too in Hattingley and across Hampshire. Several sites can be quoted together, and we are fully insured for the work.
Mouldy or split sealant often shows up at the end of a tenancy. Several properties can go on one quote.
Hattingley questions
What guarantee comes with external mastic in Hattingley?
All our work, in Hattingley and everywhere else, comes with a 12-month guarantee. We are fully insured, and an ARBOMaster approved applicator.
Do you cover Hattingley for external mastic?
Yes. Our work covers London and the South East, and Hattingley is part of that. Just ring 0345 464 0079 or drop us an email with a few details of the job, and we’ll give you a clear price.
How much does external mastic cost in Hattingley?
Every job is different, so each one gets its own quote. For a quick quote, ring 0345 464 0079 or send us an email and tell us what needs doing and where.
When will the joints need doing again?
It depends on the exposure, the movement and the product. Sealant is a maintenance item, so check the joints once a year.
Can you do several jobs on one visit?
Yes. More than one area can be quoted together.
Can you reach joints on upper floors?
That depends on the building and the joints. We work on joints that can be reached safely. Tell us about the building and we will confirm what access is needed.
What do you put in the joint?
The product depends on the job: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. Brands we use include Arbo and Everbuild.
Can you match the colour of my brickwork?
The sealant colour is picked to suit the wall so the joint blends in. Exterior sealants come in a good range of colours.
How the job changes by surface
Concrete and blockwork
The face of concrete or block is often dusty, so preparation is key. A primer goes on where the product requires one before the bead.
Brickwork movement joints
Clay brickwork grows slightly over its life and moves with the weather. The movement joint takes that up, so its sealant has to stay flexible.