Hampshire · England
External Mastic in Fullerton
External mastic across Fullerton and nearby, with every bit of old sealant taken out first and a 12-month guarantee.
- Failed sealant between panels on a façade
- Failed seals between different materials
- Joints where the bead has come unstuck
Fullerton questions
Can you help a landlord with a rental near Andover station?
Yes, landlords and agents are among the people we work for. You can call 0345 464 0079 or drop us an email with the details for a clear quote.
Can you do external mastic in Fullerton?
Yes, Fullerton is within the area we cover. We work across London and the South East. You can phone 0345 464 0079 or drop us an email and let us know what needs doing, and we’ll send you a clear quote.
Can a movement joint be filled with mortar?
No. Cement or mortar can’t stretch and the joint fails. If it has already been filled, we can normally cut it out and reseal it.
What should I tell you?
A short description and the location, with photos by email if possible. We will ask anything else we need to know.
Where do you work from?
We work from Crawley. Our applicators cover Fullerton.
What is a movement joint?
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 there a guarantee?
Yes. All our work carries a one-year guarantee.
How long does external mastic take?
A typical job takes a few hours for a handful of joints, longer for a whole elevation, including preparation and clearing up. Your quote will say how long we expect yours to take.
External mastic for homes and businesses in Fullerton
External mastic is a job where short cuts show quickly. New sealant over old, joints packed with mortar and beads with no backing rarely last long. We strip the joint back and start again. If you have movement joints filled with mortar instead of sealant and gaps where render, brick and frames meet, we can put it right.
External sealant needs dry, clean surfaces, so work around Fullerton is planned for dry weather. Tell us about access to all sides of the building, including outbuildings and garages.
Every job comes with a 12-month guarantee, wherever you are in Hampshire.
- Where
- Fullerton (SP11)
- Wider area
- Hampshire
- Cover
- 12 months on all our work
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Why act early in Fullerton
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. In a small place like Fullerton, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
Some things make a job bigger or smaller: the old material and how easily it comes out, any mould to treat, and whether the work is at height. We take all of that into account in your quote.
What you get with us
- Old sealant always removed completely
- An ARBOMaster approved applicator
- Homes, businesses and hotels
- Quality sealants from Arbo and Everbuild
See our cost guide or customer reviews.
When it isn’t the sealant
Some problems need a builder, plumber or other trade rather than us:
- Damp that isn’t coming from the joint
- Cutting new joints into brickwork, which is building work rather than sealant work
- Cracks in the bricks or render themselves, away from the joints
If you’re not sure, just phone 0345 464 0079 or email us and we will give you a straight answer.
Surfaces we seal
- Copings & trims
- Render & cladding joints
- Façade panels
- Concrete & block
- Joints between brick and frames
- Brickwork movement joints
What we do, step by step
At the end, we look at the finished work together and tell you how long to leave it. The work normally takes a few hours to a few days, depending on the length of joint and the access, depending on how much there is to do. In a small place like Fullerton, access is usually the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We start by checking each joint, agreeing the ones to redo and how we will reach them.
- Old sealant and any debris are cut and raked out.
- 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.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
How to prepare
- Plan for the work area to be out of bounds to pets and children
- Mention any leaks or damp you’ve noticed
- Try not to wet indoor joints just before the visit
Ask for a quote
Asking for a quote is easy: let us know the job and the location. Photos by email help us understand the job, and we will come back to you with a quote.
Advice
Landlords, agents and businesses in Fullerton
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. Several properties can be quoted together.
If you manage several properties in or around Fullerton, several properties can go on one quote. Send us the addresses and the work at each.
What the job involves on each surface
Concrete and blockwork
Big joints in concrete need careful depth control. We size the backing rod to the gap and keep the sealant to the right depth.
Render joints
Cracks along render joints let water in behind the coat. A sound joint keeps the render dry behind.
What affects the quote in Fullerton
For a quick quote, just ask. The main things that affect it are:
- Any mould that needs treating
- Whether the work is at height
- The product the joint needs
- The number of rooms or windows
No two jobs are quite the same, so we quote each one individually. Size, access and the product the joint needs all make a difference.
Helping us quote
Before you ask for a quote, have a think about:
- The address or postcode of the job
- Whether it has been sealed before
- What’s wrong with the joints now
- How we’d reach the joints
If you’re in Fullerton and need external mastic, ring 0345 464 0079 or drop us an email. Tell us what the problem is and where, and you’ll get a clear quote before work begins.
When to call us in Fullerton
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 and make things worse.
People generally contact us when they notice one of these:
- Sealant pulling away from one side of the joint
- Weathered mastic that no longer stretches
- Plants rooting in failed movement joints
- Gaps where render, brick and frames meet
Homes close to Church of St Nicholas include some older properties, and old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Questions to ask before booking
- The length of the guarantee
- What preparation is included
- What happens if the job turns out different
- What insurance they hold
What external mastic looks like in Fullerton
Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Letting a property close to Andover station? Then failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Fullerton is about 4 miles south of Andover, in Hampshire. For external mastic in and around Fullerton, please call 0345 464 0079 or drop us an email for a quick quote. We cover Hampshire from our Crawley base, Fullerton included. We cover 683 towns and villages across Hampshire. You can also see our page for Southampton, roughly 16 miles from Fullerton.
All of SP11 is covered for external mastic, from the main roads to the quietest streets. We also cover the places around Fullerton: Cottonworth (1 mile north-east), Chilbolton (1 mile east), Leckford (1 mile south), Wherwell (1 mile north-east) and Wherwell Wood (2 miles north). Within a short drive, we also cover Winchester (9 miles south-east), Eastleigh (14 miles south), Andover (4 miles north), Chandler's Ford (12 miles south), Romsey (11 miles south) and Hyde (9 miles south-east).
Landmarks near Fullerton
Around Fullerton, our work takes us to homes and buildings near Longstock Park, among other places. The closest station to Fullerton is Andover station, roughly 4.3 miles north of the centre. Other landmarks nearby include Andover War Memorial Hospital (4.6 miles north). Green spaces nearby include Anton Lakes and Mill Lake.