Hampshire · England
External & façade joints in Hundred Acres, Hampshire
External mastic in Hundred Acres 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
- Moss and dirt in joints with no sealant left
- Brick movement joints where the sealant has split
When it isn’t the sealant
To be straight with you, some problems need a different trade:
- Walls that need new movement joints cut into them
- Failed render or damaged cladding panels
- Subsidence or other structural problems
If in doubt, call 0345 464 0079 or send us an email and we will say what we think.
Where we work in Hundred Acres
- Joints between brick and frames
- Façade panels
- Brickwork movement joints
- Render & cladding joints
- Copings & trims
- Concrete & block
External mastic in Hundred Acres
A movement joint is only as good as its depth. 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. If you have damp patches traced to an open external joint and leaking joints around cladding and façade panels, we can put it right, whatever the surface.
Somewhere as small as Hundred Acres, homes and farm buildings often face open ground, where walls and rooflines take the weather head on. Gutter joints and wall joints there need a sealant that can flex and stay put.
A one-year guarantee comes with the work, just as it does everywhere we cover.
- Place
- Hundred Acres (PO17)
- Wider area
- Hampshire
- Guarantee
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Different surfaces, different methods
Render joints
Rendered walls have joints at beads, openings and changes of material. They’re resealed in a sealant that suits the render.
Joints between dissimilar materials
Joints where frames, sills or panels meet the wall are common leak points. The old joint is removed and a sealant that bonds to both sides goes in.
Landlords, agents and businesses in Hundred Acres
Letting agents and landlords in Hundred Acres can book us as well as householders. Sealant work between tenants is a simple way to keep a property in good order before the next move-in.
For anyone letting property in or around Hundred Acres, several properties can be quoted together. Just tell us the addresses and what each one needs.
Quotes for external mastic in Hundred Acres
There’s no set price list, because jobs vary so much. The quote depends on:
- Which sealant suits the joint
- When we can work, for business premises
- How much there is to do
- Whether there’s mould to deal with
Every job is a little different, so we quote each one individually. Size, access and the product the joint needs all play a part, and we will explain the quote if you ask.
Helping us quote
You don’t need to know the technical terms. Just tell us:
- Where the job is, and your postcode
- A few photos by email, if you can
- The type of property
- Roughly how big the job is
Need a quote? Please phone 0345 464 0079 or email us and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.
Why it’s worth doing now in Hundred Acres
Pointing a movement joint with mortar might seem a neat fix, but it locks the joint solid. 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 Hundred Acres, 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, ring 0345 464 0079 or drop us an email and we will give you an honest view and a quote.
Why Hundred Acres customers choose us
- We leave the area clean and tidy
- Anti-fungal sanitary silicone in wet areas
- Trusted Arbo and Everbuild sealants
- 4.9 on Google from 180+ five-star reviews
Read what affects the cost and customer reviews.
External mastic in Hundred Acres: local notes
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.
If you let a flat or house near Fareham station, split movement joints are easy to miss on a rental until damp shows inside. In the older streets around Church of St Nicholas, older walls, gutters and the joints where extensions meet them need a flexible sealant.
Hundred Acres is about 4 miles north-east of Fareham, in Hampshire. Across the PO17 area, we can carry out external mastic at your property. Across Hampshire, we cover 683 places, Hundred Acres among them. There’s also a page for Portsmouth, roughly 7 miles from Hundred Acres.
Work in PO17 works the same way as everywhere else we cover. You will find streets such as Hundred Acres Road and Southwick Road, all of which we cover. Nearby, we also carry out external mastic in North Boarhunt (1 mile south-east), Wickham Common (1 mile south-west), Crockerhill (2 miles south-west), Welborne (2 miles south-west) and Boarhunt (2 miles south). Larger places within reach include Winchester (13 miles north-west), Gosport (7 miles south), Havant (8 miles east), Eastleigh (9 miles north-west), Fareham (4 miles south-west) and Horndean (6 miles east).
What’s near Hundred Acres
The closest station to Hundred Acres is Fareham station, about 3.5 miles south-west. Other landmarks nearby include Fareham Shopping Centre (3.3 miles south) and Portchester Castle (4.7 miles south-east). Not far away are St Clair's Meadow and Portsdown Hill.
What happens on the day
Good joint work is mostly preparation, so that is where we spend the time. Joints are cleaned back and dried before anything new goes in. In total, it usually takes a few hours to a few days, depending on the length of joint and the access. Somewhere like Hundred Acres 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.
- 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.
Getting ready for the visit
- Try not to wet indoor joints just before the visit
- Keep children and pets away from the work area
- Mention any parking rules near the property
Getting a quote
To get a quote, call 0345 464 0079 or email us and tell us where the job is and what the problem looks like. You’ll have a clear quote before any work starts.
Advice
How to look after the new joints
Once the sealant has cured, a few habits help it last:
- Wash walls gently around the sealant
- Have failed joints looked at early
- Fix overflowing gutters above sealed joints
- Walk round the building once a year and look at the joints
Do not let soil, plants or ivy build up against the new joints. Anything that holds water against the joint wears it out sooner.
Water getting behind cladding or render can go unnoticed for a long time. By the time there’s a damp patch, the damage can be well established, so it’s worth resealing at the first signs.
Places near Hundred Acres
More services for Hundred Acres
Your questions about external mastic in Hundred Acres
Do you work for landlords with property near Fareham station?
Yes, we work for landlords and letting agents. Just phone 0345 464 0079 or email us and tell us about the property, and we’ll give you a clear price.
Do you cover Hundred Acres for external mastic?
Yes, Hundred Acres is within the area we cover. Our work covers London and the South East. You can phone 0345 464 0079 or drop us an email and tell us what needs doing.
What sealant do you use?
We choose the sealant for the joint, not the other way round. Movement, water and weather all affect the choice.
What colours does the sealant come in?
We choose a sealant colour to suit the brick, stone or render. There’s a wide choice of exterior colours.
Do you guarantee your work?
Yes: twelve months. If anything isn’t right with the work within the year, let us know and we’ll sort it.
What is a movement joint?
It’s a deliberate gap that lets the wall expand and contract without cracking. It’s sealed with a flexible sealant, not mortar.
Is it worth trying it myself?
It depends on the job. High-level, external movement and fire-rated joints are professional jobs.
Are you an approved applicator?
Yes. We hold ARBOMaster approved applicator status and we’re fully insured too.