Hampshire · England
Fareham Common External Mastic
External mastic for Fareham Common, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Water getting into walls through failed joints
- Weeds or debris growing in open joints
- Panel joints letting water in
External mastic in Fareham Common
Getting the depth right is half the job. Closed-cell backing rod sets the depth and stops the sealant sticking to the back, so it bonds to the two sides only and can stretch. If you have moss and dirt in joints with no sealant left and rain getting behind render or cladding at a joint, we can put it right.
In and around Fareham Common, older properties sit alongside newer ones, each with its own outside joints. Older homes need their gutter and trim joints kept tight, newer ones their movement joints.
There’s a 12-month guarantee on every job, large or small.
- Location
- Fareham Common (PO16, PO14)
- Region
- Hampshire
- Cover
- 12 months on all our work
- Quotes
- A clear price before work begins
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
What happens on the day
We work through the job in order: protect, prepare, seal, tidy. Typically it takes a few hours to a few days, depending on the length of joint and the access, and the area is left clean. A visit to Fareham Common 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.
- First we look over the joints with you, agree which to renew and talk through access.
- 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.
- Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
How to prepare
- Let us know about stairs, lifts or work at height
- Clear items away from the joints we are working on
- Try not to wet indoor joints just before the visit
Getting a quote
Asking for a quote is easy: let us know the job and the location and its rough size. Photos by email help us understand the job, and we will take it from there.
Related advice
Also near Fareham Common
Also in Fareham Common
Work for landlords, hotels and businesses
For anyone letting property in or around Fareham Common, several properties can go on one quote. Send us the addresses and the work at each.
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance.
Walls and rooflines in Fareham Common
Fareham Common is close to 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. The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
For site and facilities teams at buildings such as Wykeham House School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. Rented homes near Fareham station change hands often, and split movement joints are easy to miss on a rental until damp shows inside. For an older house near a landmark such as Parish Church of St Peter and St Paul, old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Fareham Common is about 1 mile east of Fareham, in Hampshire. For external mastic in and around Fareham Common, it’s easy to get a quote: please call 0345 464 0079 or email us. We cover Hampshire from our Crawley base. Our area takes in 683 places across Hampshire, large and small.
Here we cover the PO16 and PO14 postcode area for external mastic. We cover properties on Bath Lane, Osborn Road and High Street and the roads around them. Being close to the A32, Fareham Common is easy for our applicators to reach for external mastic. Other places close to Fareham Common include Wallington (1 mile north-east), Fareham (1 mile west), North Fareham (1 mile north), Boarhunt (2 miles north-east) and Crockerhill (2 miles north). Within a short drive, we also cover Gosport (3 miles south), Havant (8 miles east), Eastleigh (11 miles north-west), Horndean (8 miles north-east), Totton (15 miles west) and Chandler's Ford (13 miles north-west).
Landmarks near Fareham Common
Locally, jobs take us to homes and businesses close to Harrison Primary School, The Red Lion Hotel and Cams Hill School. The nearest railway station is Fareham station, roughly 0.8 miles west of the centre. Nearby you’ll also find Portchester Castle (2.8 miles east) and Carron Row Farm Museum (2.6 miles west). For a walk, there’s West of the River Alver and Portsdown Hill.
Should I try it myself first?
If you’ve already had a go yourself, that is fine. We cut it out and start again, so just mention it when you contact us.
If you are set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
What the job involves on each surface
Copings and trims
Copings expand and contract through the day, so the joints need a sealant that stays flexible.
Cladding and façade panels
Panel systems often rely on sealant between and around the panels. Each joint gets a sealant that suits the panel and its movement.
Why deal with it now?
Running new sealant over the old bead rarely lasts. The new layer can’t bond properly to old, weathered material, so we always take the old sealant out. Homes in smaller places like Fareham Common can face more weather, and failed outside joints let damp into walls. Inside, a split seal lets water into floors and panels just as it would anywhere.
Instead of a standard rate, we look at what your job involves: the amount of work, the old material and the access. The price is agreed before we begin.
Why Fareham Common customers choose us
- Experience in homes, commercial sites and hotels
- An ARBOMaster approved applicator
- Sanitary silicone with an anti-fungal additive in wet areas
- Quality sealants from Arbo and Everbuild
Read our cost guide and our reviews.
FAQs for Fareham Common
Is external mastic in a coastal place like Fareham Common 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. Walls facing the sea are generally the first to need attention.
Do you work for landlords with property near Fareham station?
Yes, we work for landlords and agents. Just phone 0345 464 0079 or drop us an email and tell us about the property, and we’ll send you a clear quote.
Can a movement joint be filled with mortar?
No. A mortar-filled joint cannot move, so the wall cracks somewhere else instead. It needs a flexible sealant over backing rod.
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.
Is there any odour?
It depends on the product. Some smell for a while, some hardly at all.
What do you put in the joint?
Quality sealants from brands including Arbo and Everbuild, picked for each joint. We will tell you what we’re using and why.
How often do external joints need resealing?
That depends on the wall, the weather and the movement. Signs to watch for are cracking, hardening and gaps at the edges.
Can you work on commercial sites?
Yes. Hotels, offices and other businesses use us, and we are fully insured.
Aftercare tips
How long the joints last depends on use and care. We suggest:
- Fix overflowing gutters above sealed joints
- Ask before painting over external sealant
- Avoid pressure-washing directly into sealant joints
- Never let anyone fill a movement joint with mortar
Do not let soil, plants or ivy build up against the new joints. Anything that holds water against the joint wears it out sooner.
If you can see gaps, plants or bare sections in a joint, have it checked. Earlier resealing means a smaller job and a better result.
Honest limits
Before booking, it’s worth knowing the limits too:
- Walls that need new movement joints cut into them
- Failed render or damaged cladding panels
- Cracks in the bricks or render themselves, away from the joints
Not sure which it is? You can ring 0345 464 0079 or email us and we’ll tell you honestly.
Surfaces we seal
- Façade panels
- Joints between brick and frames
- Brickwork movement joints
- Copings & trims
- Concrete & block
- Render & cladding joints