Hampshire · England
External & façade joints in Privett, Hampshire
Sealing brickwork movement joints, render, cladding and façade joints for homes and businesses in Privett and across Hampshire. Fully insured, ARBOMaster approved and guaranteed for a year.
- Old sealant gone brittle and cracked
- Failed seals between different materials
- Movement joints filled with mortar instead of sealant
How we handle external mastic in Privett
A movement joint is a deliberate break that lets a wall expand and contract. Its sealant has to flex with the building, season after season, and when it fails, the wall takes the strain and water finds a way in. We work on façade panels, joints between brick and frames and brickwork movement joints, and people most often call us about leaking joints around cladding and façade panels and sealant pulling away from one side of the joint.
In and around Privett, older properties sit alongside newer ones, each with its own outside joints. Older homes need their gutter and trim joints kept tight, newer ones their movement joints.
We guarantee the work for a year. If something isn’t right with it in that time, tell us and we will put it right.
- Location
- Privett (PO12, PO13)
- Wider area
- Hampshire
- Guarantee
- 12 months on all our work
- Quote
- A clear price before we start
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Landlords, agents and businesses in Privett
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance.
DIY sealant or a professional job?
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
If you’re set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it does not work out, we can still put it right.
Do you need external mastic in Privett?
Sometimes a movement joint was filled with mortar or a rigid filler. With the joint locked solid, the movement turns into cracks elsewhere in the wall.
Any of these means the joints need attention:
- Moss and dirt in joints with no sealant left
- Movement joints with cracked, split or missing sealant
- Joints pointed up with cement by mistake
- Water getting into walls through failed joints
In the older streets around St Faith's Church, the joints between older walls, newer extensions and the roofline need a sealant that can move.
What to look for in a quote
- When the joint can take water or movement
- Which sealant they’ll use, and why
- What guarantee comes with the work
- Whether you can choose the colour
Leave it or put it right?
It often makes sense to reseal all the failing joints on an elevation together. Joints of the same age tend to fail together and it means sorting access once. Homes in smaller places like Privett can face more weather, and failed outside joints let damp into walls. Inside, a split seal lets water into floors and panels just as it would anywhere.
Homes and businesses are quoted the same way: the amount of work, the access and the products needed, along with when we can work on site. Call for a quick quote and we’ll go through it with you.
Why choose Mr Mastic in Privett
- 180+ five-star Google reviews
- Trusted Arbo and Everbuild sealants
- White, clear, grey or another colour, product permitting
- Domestic, commercial and hotel work
See what affects the cost or our reviews.
How it works
When we get to you, we compare the joints with what we discussed. If anything is different, we explain it before carrying on. Most jobs then take a few hours to a few days, depending on the length of joint and the access. Parking around Privett is normally easier than in a town centre, but mention any lanes, gates or long drives. If the job is outside, tell us about side access and how high the joints are.
- We look at every joint and agree a colour to suit the wall.
- Failed sealant is removed back to clean, sound faces.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- Primer is applied wherever the sealant needs it.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
How to prepare
- Mention any tricky access
- Tell us if parking is tricky
- Let us know if you’ve seen damp or leaks
How to get a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we will explain how we’d tackle it. Whenever you’re ready, call 0345 464 0079 or send us an email.
Advice
Towns and villages near Privett
Also in Privett
Different surfaces, different methods
Concrete and blockwork
Concrete and block walls shrink as they dry and move with temperature. Their movement joints are sealed over backing rod with a flexible sealant.
Brickwork movement joints
Brick moves with heat and moisture, and grows a little over time. The movement joint takes that up, so the sealant in it must stay soft and stretchy.
Quotes for external mastic in Privett
There’s no set price list, because no two jobs are the same. The quote depends on:
- How many areas need sealing
- Any mould that needs treating
- How much old sealant there is and how hard it is to remove
- Which sealant suits the joint
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
Photos by email are helpful but not essential. Please mention:
- The rough size of the job
- The type of property
- A few pictures by email, if you can
- What the problem is, such as mould, gaps, leaks or cracking
Need a quote? Please ring 0345 464 0079 or send us an email with a few details. We’ll explain what we’d do and give you a clear quote before we start.
FAQs for Privett
Is external mastic in a coastal place like Privett any different?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. Choosing the right sealant for the frame and wall, laid at the right depth, helps it last.
Do you cover smaller places like Privett?
Yes, Privett is covered. We work across London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Can I do it myself?
That depends on the joint. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
Is there a guarantee?
Yes. All our work carries a 12-month guarantee.
What’s an expansion joint in brickwork?
Walls move with heat, cold and moisture, and planned joints take up that movement. It’s closed with backing rod and a flexible sealant.
Do you work at height?
That depends on the building and the joints. Where joints can be reached safely, we’ll do them. Tell us about the building and we will confirm what access is needed.
Do you work for hotels and businesses?
Yes. Commercial and hotel work is a large part of what we do, as well as homes. We can talk about working times when we quote.
Where do you work from?
We’re a Crawley-based firm, with over 20 years’ experience. Our area covers South East England, London and Scotland.
Outside joints around Privett
Privett is within about 1 mile of 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. The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
For site and facilities teams at buildings such as Gomer Infant School, larger buildings have long runs of movement joint that eventually need resealing. Letting a property close to Portsmouth Harbour station? Then outside joints that have cracked can let damp into a rental, so check them between lets.
Privett is about 1 mile south-west of Gosport, in Hampshire. Whether you’re in the middle of Privett or further out, external mastic is available for homes and businesses alike. We cover 683 towns and villages across Hampshire.
Our applicators cover all of PO12 and PO13 for external mastic and the streets around it. We cover properties on Bay Road, Gomer Lane and Vectis Road. Nearby, we also carry out external mastic in Alverstoke (1 mile south-east), Clayhall (1 mile south-east), Haslar (2 miles south-east), Portsmouth Point (2 miles east) and Portsea (2 miles east). We also work in nearby towns such as Havant (9 miles north-east), Eastleigh (14 miles north-west), Fareham (4 miles north), Horndean (10 miles north-east), Hedge End (10 miles north-west) and Waterlooville (8 miles north-east).
Around Privett
We work in homes and buildings around Wiltshire Lamb pub, Bay House School and St Vincent College, among other places. For rail, the closest station is Portsmouth Harbour station, about 2.3 miles east. Nearby you will also find Tricorn Centre (3.1 miles east) and Search (1.5 miles east). For a walk, there’s West of the River Alver and Portsdown Hill.