Hampshire · England
North Fareham External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for homeowners, landlords and businesses in North Fareham. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Rigid filler in a joint that should flex
- Sealant pulling away from one side of the joint
- Movement joints with cracked, split or missing sealant
External mastic for homes and businesses in North Fareham
External mastic is a job where short cuts show quickly. New sealant over old, joints packed with mortar and beads with no backing all tend to fail early. We take the old material out and do it properly. If you have cracked joints where brick meets render or frames and rain getting behind render or cladding at a joint, we can put it right, on façade panels, render & cladding joints and concrete & block alike.
Outside joints can only be sealed when they’re dry, so work in North Fareham is booked around the forecast. Let us know about access to every wall, plus any garages or outbuildings.
You’re covered for a year from the day we finish. If anything isn’t right with it, ring 0345 464 0079 or drop us an email.
- Location
- North Fareham (PO17)
- Wider area
- Hampshire
- Guarantee
- A year, on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Common questions in North Fareham
Will you come out to North Fareham?
Yes, smaller places are covered as well as towns. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Is external mastic in a coastal place like North Fareham any different?
Near the sea, outside joints face more wind, rain and salt than they would inland, so the choice of sealant and the preparation matter even more. It’s worth checking the walls that face the sea first.
How long does external mastic last?
That varies with the weather the wall faces, how much it moves and the sealant used. Sealant is a maintenance item, so check the joints once a year.
Is it worth trying it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. Most DIY failures come from sealing over old material, wet joints or too much sealant.
What do you put in the joint?
It depends on the joint: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. We use products from Arbo and Everbuild.
Do you work for hotels and businesses?
Yes. Commercial and hotel work is a large part of what we do. Working times can be discussed when we quote.
What should I tell you?
Only a few details: the address or postcode, what’s wrong and any access issues. After that, simply call 0345 464 0079 or send us an email.
Can new sealant go over the old?
No, because it fails. We remove every bit of old sealant first.
North Fareham buildings and the weather
North Fareham 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. 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.
Rented homes near Fareham station change hands often, and split movement joints are easy to miss on a rental until damp shows inside. Homes close to Parish Church of St Peter and St Paul include some older properties, and old and new materials meet at the roofline and walls, which is where sealant earns its keep.
North Fareham is about 1 mile north-east of Fareham, in Hampshire. Jobs in North Fareham get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Across Hampshire, we cover 683 places, and North Fareham is one of them. Our Portsmouth page covers work nearby.
Our applicators cover all of the PO17 postcode area for external mastic and the streets around it. If you’re just outside North Fareham, we cover Wallington (1 mile south), Fareham Common (1 mile south), Crockerhill (1 mile north), Welborne (1 mile north-west) and Boarhunt (1 mile east). Within a short drive, we also cover Winchester (15 miles north-west), Gosport (4 miles south), Havant (8 miles east), Eastleigh (10 miles north-west), Horndean (8 miles east) and Totton (15 miles west).
Around North Fareham
We work in homes and buildings around The Golden Lion Public House, Cams Hill School and Wykeham House School and the streets around them. North Fareham’s nearest station is Fareham station, roughly 1.3 miles south-west of the centre. Other landmarks nearby include Carron Row Farm Museum (2.7 miles west) and Fareham Shopping Centre (1 mile south). Open spaces near North Fareham include Portsdown Hill and West of the River Alver.
What we cannot put right
We will always be straight with you, so here’s what sealant cannot fix:
- Damp that is not coming from the joint
- Loose or hollow render, which needs re-rendering
- Subsidence or other structural problems
If you’re not sure, just ring 0345 464 0079 or email us and we will give you a straight answer before booking.
Where we work in North Fareham
- Concrete & block
- Copings & trims
- Brickwork movement joints
- Façade panels
- Joints between brick and frames
- Render & cladding joints
Do you need external mastic in North Fareham?
The wrong product in a moving joint is a classic cause. A stiff, general-purpose sealant cannot cope with a joint that moves a lot, and it tears off the sides.
It’s worth asking for a quote if you see:
- Failed sealant between panels on a façade
- Joints pointed up with cement by mistake
- Plants rooting in failed movement joints
- Sealant pulling away from one side of the joint
If you look after a building such as Harrison Primary School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
What your quote should include
- Whether all the old sealant comes out first
- What happens if the job turns out different
- Which sealant they’ll use, and why
- How the joint is cleaned and prepared
Why act early in North Fareham
Pointing a movement joint with mortar might seem a neat fix, but it locks the joint solid. The wall then cracks somewhere else. A flexible sealant over backing rod is what the joint needs. Where a wall is exposed, as many are in small places like North Fareham, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
Leaving a failed joint normally makes the job bigger, not smaller, as water and mould keep getting in. If you are not sure whether it needs doing, phone 0345 464 0079 or send us an email for an honest opinion and a quote.
Why us?
- Fully insured
- Domestic, commercial and hotel work
- An ARBOMaster approved applicator
- Neat joints and a tidy finish
What affects the cost of external mastic
You will get a clear quote before any work starts. It takes into account:
- How many rooms, windows or areas are involved
- How easy the joints are to reach
- The number and length of the joints
- Whether old sealant or filler has to be cut out
What you pay reflects the work, not a rough estimate. That is why we ask a few questions first.
What to tell us for a quote
Photos by email are helpful but not essential. Try to tell us:
- The rough size of the job
- Any previous sealing or DIY work
- If it’s domestic, commercial or a hotel
- Where the job is, and your postcode
For external mastic in North Fareham, call 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and you will get a clear quote before we start.
How it works
At the end, we look at the finished work together. The work normally takes anything from a few hours to several days, depending on the building, depending on the size of the job. Somewhere as small as North Fareham, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We inspect the joints and agree which need resealing and how they’ll be reached.
- The old mastic and anything lodged in the joint is removed.
- We clean both faces of the joint and prime them where the product calls for it.
- Backing rod goes in next, setting the depth and keeping the sealant off the back of the joint.
- 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
- For business premises, tell us about site rules or sign-in
- Clear the area around the work
Ask for a quote
Every job is quoted individually, so the first step is telling us about yours. Just phone 0345 464 0079 or send us an email with the details and send photos if you have them.
Read more
Aftercare tips
So the new joints stay in good condition:
- Point out the joints to other trades
- Have failed joints looked at early
- Don’t let climbing plants root in the sealant
- Check the sealant is paintable before painting near it
Don’t let soil, plants or ivy build up against the new joints. Anything that holds water against the joint wears it out sooner.
Once a joint cannot move, the wall finds another way, often as cracks near the joint. Catch it early and you reduce the risk.
Places near North Fareham
Also in North Fareham
What the job involves on each surface
Joints between dissimilar materials
Different materials may need different primers. We prepare both faces so the sealant bonds properly.
Cladding and façade panels
Cladding and façade panels are usually separated by sealed joints. We reseal them with a sealant suited to the panel material.