Hampshire · England
Leigh Park External Mastic
External mastic in Leigh Park from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Damp patches traced to an open external joint
- Joints where the bead has come unstuck
- Rigid filler in a joint that should flex
External mastic in Leigh Park, done properly
Low-level joints can usually be done from the ground. Where joints are higher up, tell us about the building when you get in touch and we will confirm what access is needed. Common call-outs are for movement joints with cracked, split or missing sealant and weathered mastic that no longer stretches, on render & cladding joints, concrete & block and copings & trims.
In and around Leigh Park, older properties sit alongside newer ones, each with its own outside joints. Older gutters and trims need their joints resealed; newer brick and render need their movement joints kept sound.
The work is guaranteed for twelve months. If something is not right with it in that time, tell us and we will put it right.
- Where
- Leigh Park (PO9)
- Wider area
- Hampshire
- Cover
- One year on every job
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Questions from Leigh Park
Do you work for landlords with property near Havant station?
Yes, we work for letting agents and landlords. Just call 0345 464 0079 or send us an email and tell us about the property, and we’ll give you a clear price.
Is external mastic in a coastal place like Leigh Park any different?
Coastal weather is harder on outside sealant: there’s more wind-driven rain and, closer to the shore, salt in the air. The right product, a clean joint and the right depth all help it cope.
Do you seal joints where cladding meets other materials?
Yes. Where different materials meet is one of the most common joints we seal. The sealant is chosen to bond to both sides with primer where required.
How long does the job take?
Typically it takes anything from a few hours to several days, depending on the building. Larger jobs naturally take longer.
Where do you work from?
Mr Mastic is based in Crawley. We cover Leigh Park and the rest of Hampshire.
Is it worth trying it myself?
That depends on the joint. High-level, external movement and fire-rated joints are professional jobs.
What is a movement joint?
Brickwork, render and cladding all move a little, and planned joints take up that movement. The gap is sealed with a flexible sealant over backing rod.
Can a movement joint be filled with mortar?
No. Cement or mortar cannot stretch, so the joint stops doing its job. If it has already been filled, we can normally cut it out and reseal it.
Why it’s worth doing now in Leigh Park
The longer a joint stays open, the more water the wall takes in. In cold weather, frost can damage wet brick and render, so the damage spreads beyond the joint. Around Leigh Park, water from a failed joint in an older home can soak into timber and plaster, and that’s a much bigger job than renewing the sealant.
The cost depends on the size of the job, how hard the old material is to remove and access to the work. We give a clear quote before any work starts.
Why Leigh Park customers choose us
- Every job guaranteed for a year
- A choice of colours where the product allows
- Homes, businesses and hotels
- We are fully insured
Quotes for external mastic in Leigh Park
The price is agreed before any work begins. It’s based on:
- Access and height
- The type of sealant required
- The size of the job
- Any mould that needs treating
Leaving a failed joint generally makes the job bigger, not smaller, as water and mould keep getting in. If you are not sure whether it needs doing, call 0345 464 0079 or drop us an email for an honest opinion and a quote.
Helping us quote
What to tell us when you ask for a quote:
- A few photos by email, if you can
- Any access issues, like height or stairs
- If it’s domestic, commercial or a hotel
- The rough size of the job
Every job is quoted individually. Just call 0345 464 0079 or send us an email with the details, and photos are welcome.
How to look after the new joints
No joint lasts for ever, but care makes a real difference. A few tips:
- Make sure movement joints are not pointed over
- Show decorators and builders where the movement joints are
- Get split or bare joints resealed while the damage is small
- Keep water from gutters off the wall
Have a quick look at the joints each spring. Splits, gaps at the edges or plants in the joint are early warning signs.
Small splits are the time to act. Then it’s a straightforward cut-out and reseal.
Outside joints around Leigh Park
Leigh Park is within about 2 miles of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. Both are hard on movement joints and outside wall joints, which can dry out and crack sooner where a building faces the weather. Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Letting a property close to Havant station? Then failed wall and movement joints let damp in, so they’re worth checking between tenancies. If you look after a building such as Riders Infant School, its movement joints, gutters and trims need looking after like any other building’s.
Leigh Park is about 1 mile north of Havant, in Hampshire. We carry out external mastic for householders, landlords and businesses in Leigh Park. Leigh Park is one of 683 places in Hampshire we cover. For nearby work, see our Portsmouth page (6 miles or so).
We cover every part of the PO9 postcode area for external mastic. That includes homes and businesses on Riders Lane, Iping Avenue and Sunwood Road and the roads around them. Neighbouring places we cover for external mastic include Havant (1 mile south), Durrants (1 mile north-east), Denvilles (1 mile south-east), Rowlands Castle (2 miles north-east) and Langstone (2 miles south). Larger places within reach include Gosport (8 miles south-west), Fareham (9 miles west), Horndean (3 miles north), Hedge End (14 miles west), Petersfield (10 miles north) and Locks Heath (12 miles west).
Around Leigh Park
We work in homes and buildings around St Albans Church and Park Community School. The nearest railway station is Havant station, about 1 mile south. Well-known places in the area include Warblington Castle (1.9 miles south-east) and Havant Museum (1.3 miles south). Green spaces nearby include Windmill Hill and Southmoor Nature Reserve.
Places near Leigh Park
More services for Leigh Park
How it works
On the day, we look over the joints with you first. We protect the surfaces around the joints before we start. Most jobs take anything from a few hours to several days, depending on the building. A visit to Leigh Park is planned like any other: the time, the access and where to park are agreed in advance. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- Each joint is checked and the colour of the new sealant agreed.
- Failed sealant is removed back to clean, sound faces.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- We prime the faces where required.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Before we arrive
- Mention any leaks or damp you’ve noticed
- Plan for the work area to be out of bounds to pets and children
- Tell us if parking is tricky
Get a quote
There’s no standard price list, because every job is different. Instead, we send you a clear quote for your job. To get started, phone 0345 464 0079 or send us an email.
Advice
Do you need external mastic in Leigh Park?
Many joints fail because they were sealed too deep or with nothing behind them. Sealant bonded to three sides has nowhere to go and tears as soon as the joint widens.
Signs it’s time to call us include:
- Joints where the bead has come unstuck
- Cracked joints where brick meets render or frames
- Joints with sealant missing in places
- Damp patches traced to an open external joint
In the older streets around St Francis, an extension built onto an older house moves differently, and the joint between them takes the strain.
What to look for in a quote
- Whether VAT is included
- Whether all the old sealant comes out first
- How the colour is chosen
- What preparation is included
Landlords, agents and businesses in Leigh Park
For anyone letting property in or around Leigh Park, jobs at different addresses can go on one quote. Send us the addresses and the work at each, and pictures by email help.
We work for letting agents and landlords as well as householders. Resealing between tenancies keeps a property looking cared for.
What the job involves on each surface
Render joints
Water behind render can lead to blown patches. A sound joint keeps the render dry behind and protects the render itself.
Joints between dissimilar materials
Brick against render, concrete against metal, stone against timber: every change of material is a joint. A flexible sealant bridges the two.