Hampshire · England
External Mastic in Netley
Problem with your movement joints in Netley? We cut out the old, prepare the joints and apply the right sealant, with a one-year guarantee.
- Plants rooting in failed movement joints
- Sealant that has lost its bond to the brick or render
- Cracked joints where brick meets render or frames
External mastic in Netley
For buildings in Netley, we reseal external joints of all kinds, from brick movement joints to cladding panels. The preparation is the same whatever the wall: clean, sound faces and a controlled depth. If you’re dealing with failed seals between different materials and weeds or debris growing in open joints, we can put it right, whatever the surface.
Houses in smaller places like Netley 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.
You get a 12-month guarantee, the same in Netley as everywhere else we work.
- Location
- Netley (SO31)
- Wider area
- Hampshire
- Cover
- 12 months on all our work
- Price
- A clear price before work begins
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
DIY sealant or a professional job?
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it doesn’t work out, we can still put it right.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
Towns and villages near Netley
Other services in Netley
How the job changes by surface
Joints between dissimilar materials
Different materials may need different primers. Both surfaces are cleaned and primed as the product requires.
Brickwork movement joints
Clay brickwork grows slightly over its life and moves with the weather. That movement goes into the joint, so the sealant in it must stay soft and stretchy.
Quotes for external mastic in Netley
The quote reflects the job in front of us. We take into account:
- Mould in or behind the old joints
- The size of the job
- The product the joint needs
- How many areas need sealing
Leaving a failed joint generally makes the job bigger, not smaller, as water and mould keep getting in. If you’re not sure whether it needs doing, ring 0345 464 0079 or drop us an email and we’ll give you an honest view and a quote.
Helping us quote
There’s no need for technical detail. It helps if you can tell us:
- If someone has resealed it before
- A few photos by email, if you can
- The problem you’ve noticed
- The rough size of the job
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we will explain how we’d tackle it. When it suits you, call 0345 464 0079 or send us an email.
What external mastic looks like in Netley
Netley is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. That is hard on movement joints and outside wall joints, especially on the side facing the sea. London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you look after a building such as Netley Abbey Infant School, its movement joints, gutters and trims need looking after like any other building’s. Homes close to Church of St Edward the Confessor include some older properties, and an extension built onto an older house moves differently, and the joint between them takes the strain.
Netley is about 3 miles north-east of Hythe, in Hampshire. Netley gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Netley is one of 683 places in Hampshire we cover.
Every address in SO31 is covered for external mastic. Streets in the area include Station Road, The Crescent and Hunt Avenue, and we cover them all. If you’re just outside Netley, we cover Butlocks Heath (1 mile north-east), Hound (1 mile south-east), Weston (1 mile north-west), Old Netley (1 mile north-east) and Lowford (1 mile north-east). Within a short drive, we also cover Winchester (13 miles north), Gosport (10 miles south-east), Eastleigh (6 miles north), Fareham (7 miles east), Horndean (15 miles east) and Totton (8 miles west).
Around Netley
Around Netley, our work takes us to homes and buildings near Grove Park Business and Enterprise College, Westwood Woodland Park and The Hamble School. Netley has its own railway station: Netley station. A little further out are Bursledon Brickworks Industrial Museum (2.5 miles east) and Coldeast (2.8 miles east). The countryside around Netley includes Mercury Marshes.
Aftercare tips
Good habits help new joints last longer. Our tips:
- Keep movement joints as flexible joints, not mortar
- Walk round the building once a year and look at the joints
- Deal with leaking gutters that soak the joints below
- Get split or bare joints resealed while the damage is small
Keep the joints clear of soil, plants and climbing growth. Damp material against the sealant shortens its life.
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.
For landlords and businesses
From a single let to a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a one-year guarantee.
We work for letting agents and landlords as well as homeowners. Resealing between tenancies keeps a property looking cared for.
Do you need external mastic in Netley?
If plants are growing out of a joint, the sealant has usually failed or was never there. Dirt and roots then trap moisture in the joint.
People normally contact us when they notice one of these:
- Old sealant gone brittle and cracked
- Joints where the bead has come unstuck
- Gaps where render, brick and frames meet
- Leaking joints around cladding and façade panels
If you let a flat or house near Netley station, outside joints that have cracked can let damp into a rental, so check them between lets.
What to look for in a quote
- What happens if the job turns out different
- Which colour the sealant will be
- What the cure time is
- What insurance they hold
How the visit works
The work is kept neat and contained to the area we are working on. Expect the work to take anything from a few hours to several days, depending on the building, and we explain the cure time before we leave. Parking around Netley is usually 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 inspect the joints and agree which need resealing and how they’ll be reached.
- Old sealant and any debris are cut and raked out.
- We clean both faces of the joint and prime them where the product calls for it.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.
Before we arrive
- Tell us about any previous sealing or DIY attempts
- Clear items away from the joints we are working on
- Tell us about access, such as stairs, a lift or high-level joints
How to get a quote
For external mastic in Netley, call 0345 464 0079 or email us. A short description of the job and where it is helps us quote, and we will agree the price before any work begins.
Related advice
Netley: your questions answered
Do you work for landlords with property near Netley station?
Yes. We work for letting agents and landlords as well as householders. Just call 0345 464 0079 or email us with the address and what needs doing, and we will send you a clear quote.
Do you cover smaller places like Netley?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Is it OK to fill a movement joint with cement?
No. Mortar locks the joint solid, so the movement cracks the wall elsewhere. Use a flexible sealant with backing rod.
Do you work at height?
It depends on the height and the site. Ground-floor joints are simple; for higher ones, send details and we’ll confirm the access.
Is it OK to seal over old sealant?
No, it will not last. It can look neat for a few weeks, but the new bead soon lifts. The old sealant has to come out completely.
Should I try DIY first?
You can, for simple jobs. Preparation is everything: all the old sealant out, and a clean, dry joint. We can always put it right if it fails.
What should I tell you?
Tell us what needs doing and where, with pictures by email if possible. We’ll ask anything else we need to know.
Will you leave a mess?
Not at all. The area is protected while we work and cleaned up afterwards.