Hampshire · England
External Mastic in Lee-on-the-Solent
Sealing brickwork movement joints, render, cladding and façade joints for Lee-on-the-Solent, backed by a 12-month guarantee. Ask us for a quote.
- Weeds or debris growing in open joints
- Sealant that has lost its bond to the brick or render
- Old sealant gone brittle and cracked
Looking after it afterwards
To keep the joints looking good and working properly:
- Show decorators and builders where the movement joints are
- Have failed joints looked at early
- Keep soil, plants and ivy away from the joints
- Wash walls gently around the sealant
Keep the joints clear of soil, plants and climbing growth. Damp material against the sealant shortens its life.
Leave a failed movement joint and water keeps getting into the wall. Over time it can mean damp inside, stained render or frost-damaged brick.
External mastic for homes and businesses in Lee-on-the-Solent
Failed sealant is cut out, the depth set with closed-cell backing rod, and the joint resealed with a low-modulus sealant made for outside. The colour is chosen to suit the brick or render so the joint doesn’t stand out. Typical jobs include movement joints with cracked, split or missing sealant and leaking joints around cladding and façade panels, across concrete & block, brickwork movement joints and façade panels.
Houses in smaller places like Lee-on-the-Solent can stand more in the open than those in a built-up town, and walls and rooflines facing the weather take the worst of it. That’s where gutter joints and wall joints tend to fail first.
A 12-month guarantee comes with the work, just as it does everywhere we cover.
- Place
- Lee-on-the-Solent (PO13)
- Wider area
- Hampshire
- Guarantee
- A year, on every job
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Nearby places to Lee-on-the-Solent
What else we do in Lee-on-the-Solent
How the visit works
The work is kept neat and contained to the joints we are treating. The job normally takes anything from a few hours to several days, depending on the building, and we tell you how long to leave it before we go. Parking around Lee-on-the-Solent is generally easier than in a town centre, but mention any lanes, gates or long drives. For outside work, side access and the height of the joints help us plan.
- We inspect the joints and agree which need resealing and how they’ll be reached.
- We cut out the failed sealant and rake out any dirt or growth.
- The joint faces are cleaned and primed where the sealant needs it.
- Backing rod goes in next, setting the depth and keeping the sealant off the back of the joint.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
How to prepare
- Mention any sign-in or site rules at work premises
- Plan for the work area to be out of bounds to pets and children
- For indoor joints, keep the area dry beforehand if you can
Getting a quote
We don’t publish a price list, because every job is different. Instead, your job gets its own clear quote. To get started, phone 0345 464 0079 or send us an email.
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Work for landlords, hotels and businesses
We work for letting agents and landlords as well as homeowners. Resealing between tenancies is a simple way to keep a property in good order before the next move-in.
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance that we can handle for you.
DIY versus a professional finish
If you’ve already had a go yourself, that’s fine. We cut it out and start again.
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
What affects the quote in Lee-on-the-Solent
Every job gets its own quote. This is what makes a difference:
- The type of sealant required
- How many areas need sealing
- Whether there’s mould to deal with
- The number and length of the joints
Homes and businesses are quoted the same way: the amount of work, how we reach it and what it needs, along with when we can work on site. Ask us for a quote and we’ll explain what it covers.
What to tell us for a quote
When you call or email, these details help:
- Any access issues, like height or stairs
- The rough size of the job
- If it’s domestic, commercial or a hotel
- Photos by email, if that’s easy
Call for a quick quote, or email us if that is easier. Tell us about the joints that need doing and we will explain what’s involved and give you a clear price.
How the job changes by surface
Copings and trims
Metal and stone copings both move with temperature, so a flexible sealant suits them best year round.
Concrete and blockwork
Wide joints in concrete need the depth controlling carefully. Backing rod sized to the joint sets it and keep the sealant to the right depth.
When something else is needed
Before booking, it’s worth knowing the limits too:
- Failed render or damaged cladding panels
- Adding movement joints to masonry that has none
- Structural movement, which needs a surveyor or engineer
If you are not sure, just call 0345 464 0079 or email us and we’ll give you a straight answer before booking.
Joints and surfaces we work on
- Brickwork movement joints
- Render & cladding joints
- Joints between brick and frames
- Concrete & block
- Copings & trims
- Façade panels
Lee-on-the-Solent questions
Do you work for landlords with property near Fareham station?
Yes, rental work is part of what we do. You can phone 0345 464 0079 or send us an email with the address and a few details, and we will give you a fixed price before work begins.
Is external mastic in a coastal place like Lee-on-the-Solent any different?
Coastal homes put outside sealant through more weather than inland ones, so the choice of sealant and the preparation matter even more. It’s worth checking the walls that face the sea first.
Is there any odour?
Some sealants have a smell while they cure, which fades as it sets. Opening a window helps.
What information do you need?
Only a few details: where it is, what you’ve noticed and how we reach it. After that, simply call 0345 464 0079 or send us an email.
Where are you based?
Mr Mastic is based in Crawley. We cover Lee-on-the-Solent and the rest of Hampshire, along with the rest of our area.
Why do you put foam in the joint first?
We fit closed-cell backing rod wherever the joint depth needs controlling. It controls the depth and stops the sealant bonding to the back so the bead can stretch.
Do you come to Lee-on-the-Solent?
Yes. We’re based in Crawley and work across South East England, London and Scotland, Lee-on-the-Solent included.
Do you take out the old sealant first?
Yes. All of the old material is cut out and the joint cleaned before applying anything new.
What external mastic looks like in Lee-on-the-Solent
Lee-on-the-Solent is within about 1 mile of the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. 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, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Letting a property close to Fareham station? Then split movement joints are easy to miss on a rental until damp shows inside. In the older streets around Church of St Faith, older walls, gutters and the joints where extensions meet them need a flexible sealant. Schools such as Lee-On-the-Solent Infant and Nursery School are buildings too, and larger buildings have long runs of movement joint that eventually need resealing.
Lee-on-the-Solent is about 2 miles west of Gosport, in Hampshire. Lee-on-the-Solent gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Lee-on-the-Solent is one of 683 places in Hampshire we cover.
Jobs for external mastic in PO13 works the same way as everywhere else we cover. You will find streets such as High Street, Victoria Square and Wheatcroft Road. If you’re just outside Lee-on-the-Solent, we cover Crofton (1 mile north), Peel Common (1 mile north), Rowner (2 miles north-east), Bridgemary (2 miles north-east) and Gosport (2 miles east). Further out, we also cover Havant (10 miles north-east), Eastleigh (13 miles north-west), Fareham (3 miles north), Horndean (11 miles north-east), Chandler's Ford (15 miles north-west) and Hedge End (9 miles north-west).
Local landmarks in Lee-on-the-Solent
Locally, jobs take us to homes and businesses close to Crofton School and Baycroft School and the streets around them. Lee-on-the-Solent’s nearest station is Fareham station, roughly 3.5 miles north. Well-known places in the area include Fareham Shopping Centre (3.6 miles north) and Gosport War Memorial Hospital (2.1 miles east). For a walk, there’s West of the River Alver.