Hampshire · England
External & façade joints in Waterlooville, Hampshire
Problem with your movement joints in Waterlooville? We cut out the old, prepare the joints and apply the right sealant, with a 12-month guarantee.
- Water getting into walls through failed joints
- Gaps where render, brick and frames meet
- Hard, crazed mastic that has stopped moving
Landlords, agents and businesses in Waterlooville
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance that we can handle for you.
How we handle external mastic in Waterlooville
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 line blends in. If you have gaps where render, brick and frames meet and rigid filler in a joint that should flex, we can put it right.
In a town like Waterlooville, older houses with traditional gutters sit alongside newer estates with uPVC rooflines and rendered walls. All of those joints move, so they need a flexible sealant rather than a rigid filler.
You’re covered for a year from the day we finish. If anything is not right with it, call 0345 464 0079 or drop us an email.
- Location
- Waterlooville (PO7, PO8)
- Region
- Hampshire
- Guarantee
- A year, on every job
- Price
- A clear price before work begins
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Why it’s worth doing now in Waterlooville
Mortar or ordinary filler might look like a quick way to close an open joint, 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. In a family home in Waterlooville, a failed seal around a bath or a frame lets water into places you cannot see, like the floor under a bath, the back of a panel or the inside of a wall. Left alone, that means rot, damp and a bigger repair.
Leaving a failed joint normally makes the job bigger, not smaller. If you’re not sure whether it needs doing, ring 0345 464 0079 or drop us an email and we will give you an honest view and a quote.
Why book with us
- Homes, businesses and hotels
- Trusted Arbo and Everbuild sealants
- We are fully insured
- A choice of colours where the product allows
See our cost guide or what customers say.
Quotes for external mastic in Waterlooville
We quote each job individually. This is what makes a difference:
- How many areas need sealing
- The product the joint needs
- The size of the job
- How easy the joints are to reach
A few things move the cost up or down: how much old sealant there is and how stubborn it is, any mould to treat, and whether we need extra access for height. We take all of that into account in your quote.
What we need to know
When you contact us, these details help:
- Any access issues, like height or stairs
- What the problem is, such as mould, gaps, leaks or cracking
- Where the property is
- The rough size of the job
Every job is quoted individually, so start by telling us what you need. Simply ring 0345 464 0079 or send us an email and describe the job and send photos if you have them.
Also near Waterlooville
Also in Waterlooville
When something else is needed
New sealant cannot fix everything, and we will tell you before we start. Sealant will not put right:
- Cutting new joints into brickwork, which is building work rather than sealant work
- Cracks in the bricks or render themselves, away from the joints
- Movement that is more than a sealant joint can take
If you’re not sure, just ring 0345 464 0079 or drop us an email and we will give you a straight answer.
Surfaces we seal
- Copings & trims
- Joints between brick and frames
- Concrete & block
- Brickwork movement joints
- Façade panels
- Render & cladding joints
Can I do it myself?
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly, so tell us about it when you ask for a quote.
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
What we do, step by step
There isn’t much for you to do on the day. Point us to the joints and we will get on with it. The work itself takes anything from a few hours to several days, depending on the building. Parking in a town like Waterlooville is normally straightforward, but tell us if there’s a driveway or any restrictions, and mention if the work is upstairs, in a flat or high on the outside.
- We look at every joint and agree a colour to suit the wall.
- 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.
- We gun in low-modulus sealant and tool it neatly.
How to prepare
- Mention any tricky access
- Mention any sign-in or site rules at work premises
- Let us know about earlier repairs to the joints
Getting a quote
For external mastic in Waterlooville, ring 0345 464 0079 or send us an email. Tell us what the problem is and where, and we’ll agree the price before any work begins.
Related advice
How the job changes by surface
Joints between dissimilar materials
Brick against render, concrete against metal, stone against timber: every change of material is a joint. We seal the joint with a flexible exterior sealant.
Concrete and blockwork
Concrete faces can be dusty and porous, so preparation is key. A primer goes on where the product requires one.
Walls and rooflines in Waterlooville
Waterlooville is close to 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. With historic houses such as Warblington Castle (about 4 miles south-east) nearby, there’s older building stock in the area around Waterlooville as well as newer homes. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material.
If you let a flat or house near Bedhampton station, failed wall and movement joints let damp in, so they’re worth checking between tenancies. Managing a site like Hart Plain Junior School? Then movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. If you live in an older home near Saint George's, older walls, gutters and the joints where extensions meet them need a flexible sealant.
Waterlooville is about 6 miles north of Portsmouth, in Hampshire. Every kind of property in Waterlooville can book us for external mastic, old or new, large or small. Every job comes with our 12-month guarantee. Waterlooville is one of 683 towns and villages in Hampshire we cover for external mastic. For nearby work, see our Portsmouth page (6 miles or so).
We work across PO7 and PO8 for external mastic and the streets around it. You will find streets such as London Road, Chillingham Square and Aysgarth Road. We also cover the places around Waterlooville: Hart Plain (1 mile north), Purbrook (1 mile south), Cowplain (1 mile north), Soake (1 mile north-west) and Purbrook Heath (1 mile south-west). Larger places within reach include Gosport (8 miles south-west), Eastleigh (15 miles north-west), Fareham (7 miles west), Hedge End (12 miles west), Petersfield (9 miles north-east) and Locks Heath (10 miles west).
Around Waterlooville
We work in homes and buildings around Cowplain Community School and The Denmead Queen pub, among other places. The closest station to Waterlooville is Bedhampton station, about 2.6 miles south-east. Nearby you will also find Queen Alexandra Hospital (2.7 miles south-west) and Havant Museum (3.3 miles south-east). Not far away are Portsdown Hill and Southmoor Nature Reserve.
Common questions in Waterlooville
Can you do external mastic in Waterlooville?
Yes, Waterlooville is within the area we cover. Our work covers London and the South East. Just call 0345 464 0079 or drop us an email with a few details of the job, and we will send you a clear quote.
Does living near the coast affect external mastic in Waterlooville?
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 remove the old sealant?
Yes, every time. New sealant won’t bond properly to old, so any old material comes out before anything new goes in.
Can you quote for more than one area?
Yes, we can. More than one area can go on one quote.
What’s an expansion joint in brickwork?
Brickwork, render and cladding all move a little, so long walls have planned gaps to take that movement. It’s closed with backing rod and a flexible sealant.
Is it OK to seal over old sealant?
No, and we never do. It may look fine at first, but the new layer lifts away from the old one. The old sealant has to come out completely.
Where is Mr Mastic based?
Our base is in Crawley, West Sussex, and we cover South East England, London and all of Scotland.
Will you leave a mess?
No. The area is protected while we work and cleaned up afterwards.