Hampshire · England
External & façade joints in Horton Heath, Hampshire
External mastic in Horton Heath from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Weathered mastic that no longer stretches
- Cracked joints where brick meets render or frames
- Rigid filler in a joint that should flex
About our external mastic in Horton Heath
We cut out failed sealant, set the joint depth with closed-cell backing rod and reseal with a low-modulus exterior sealant. The colour is chosen to suit the brick or render so the joint does not stand out. We work on façade panels, brickwork movement joints and copings & trims, and common reasons people get in touch are leaking joints around cladding and façade panels and movement joints with cracked, split or missing sealant.
Outbuildings, garages and conservatories around homes in places like Horton Heath add more joints to look after. Leaks usually start at a gutter end, a garage door frame or where an extension meets the house.
You get a 12-month guarantee, the same in Horton Heath as everywhere else we work.
- Where
- Horton Heath (SO50)
- Wider area
- Hampshire
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
FAQs for Horton Heath
Will you come out to Horton Heath?
Yes. Horton Heath is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
I let a flat near Hedge End station. Can you help?
Yes, we work for landlords and letting agents. You can ring 0345 464 0079 or drop us an email with the address and a few details, and we’ll give you a fixed price before we start.
Do you guarantee your work?
Yes, always. There’s a 12-month guarantee on every job, large or small.
Will the old sealant be removed?
Always. Sealing over the old bead is the commonest cause of early failure, and it’s something we never do.
How long does the job take?
A typical job takes a few hours for a handful of joints, longer for a whole elevation, including preparation and clearing up. We will confirm how long when we quote.
What does external mastic cost?
Size, access and the old material all affect the cost. Ask us for a quote and we’ll talk you through it.
How long should I leave it?
Different products cure at different speeds, so follow the cure time we give you.
Should I try DIY first?
You can, for simple jobs. The key is preparation: remove all the old material and work on a clean, dry joint. We can always put it right if it fails.
Nearby places to Horton Heath
More services for Horton Heath
Why act early in Horton Heath
An open joint keeps letting water into the wall with every downpour. In cold weather, frost can damage wet brick and render near the open joint, so the problem grows beyond the joint itself. Around Horton Heath, water from a failed joint in an older home can soak into timber and plaster, which is far harder to put right than the sealant itself.
Doing several joints on one visit normally makes better use of the time than several visits. We will give you a clear quote for the lot.
Why Horton Heath customers choose us
- Homes, businesses and hotels
- Every job guaranteed for a year
- 20+ years of sealant experience
- Old sealant always removed completely
See our cost guide and our reviews.
For landlords and businesses
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements and we will give you a quote.
Housing providers, facilities teams and property managers book us too in Horton Heath and across Hampshire. Several sites can be quoted together, and we are fully insured for the work.
Aftercare tips
Good habits help new joints last longer. A few tips:
- Keep high-pressure jets off the joints
- Clear growth from the base of walls and joints
- Make sure movement joints are not pointed over
- Keep water from gutters off the wall
Follow the cure time we give you before the joint is knocked or disturbed. The surface skins over quickly, but full cure takes longer.
Gaps, plants or missing sealant in a joint are worth getting looked at. Early work is quicker and leaves a better finish.
When something else is needed
To be straight with you, there are a few things sealant will not fix:
- Cutting new joints into brickwork, which is building work rather than sealant work
- Render that is blown, hollow or coming away
- Cracks in the bricks or render themselves, away from the joints
If in doubt, call 0345 464 0079 or send us an email and we’ll say what we think before you book.
Where we work in Horton Heath
- Brickwork movement joints
- Render & cladding joints
- Façade panels
- Concrete & block
- Copings & trims
- Joints between brick and frames
DIY versus a professional finish
If you’ve already had a go yourself, that is fine. We cut it out and start again.
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Different surfaces, different methods
Render joints
Render has movement joints and stop beads that need sealing. We reseal them with a flexible exterior sealant that suits the render colour.
Copings and trims
Coping and trim joints face rain and sun head on. We reseal them with an exterior sealant suited to the material.
Outside joints around Horton Heath
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. Historic houses like South Stoneham House (about 3.7 miles west) are a reminder that the area around Horton Heath has older buildings as well as new. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material.
Rented homes near Hedge End station change hands often, and outside joints that have cracked can let damp into a rental, so check them between lets. In the older streets around Church of the Holy Cross, old and new materials meet at the roofline and walls, which is where sealant earns its keep. Managing a site like Fair Oak Infant School? Then larger buildings have long runs of movement joint that eventually need resealing.
Horton Heath is about 2 miles south-east of Eastleigh, in Hampshire. From the centre of Horton Heath to the outskirts, we cover external mastic for every kind of property, from flats and houses to offices and hotels. Horton Heath is one of 683 places in Hampshire where we work for external mastic.
Postcode districts we cover here for external mastic: SO50. If you need external mastic at a property on The Lillies, Botley Road and Centaury Gardens or a nearby road, our applicators can take on the job. Nearby, we also carry out external mastic in Fair Oak (1 mile north), Durley (2 miles east), Boorley Green (2 miles south-east), Wintershill (2 miles east) and Durley Street (2 miles east). Further out, we also cover Winchester (7 miles north), Gosport (12 miles south-east), Havant (15 miles south-east), Fareham (8 miles south-east), Horndean (13 miles east) and Totton (9 miles west).
What’s near Horton Heath
We work in homes and buildings around The Old George Public House, Wyvern Technology College and Wyvern Technology College. Horton Heath’s nearest station is Hedge End station, roughly 1.4 miles south of the centre. A little further out are Moorgreen Hospital (2 miles south-west) and Eastleigh Museum (2.7 miles north-west). Not far away are Bishops Waltham Branch LNR.
How the visit works
At the end, we look at the finished work together and explain the cure time. The work normally takes anything from a few hours to several days, depending on the building, depending on the size of the job. In a smaller place like Horton Heath, parking is seldom the issue; lanes, gates and long drives are worth mentioning. For outside work, side access and the height of the joints help us plan.
- First, the joints are inspected and the access agreed.
- We cut out the old mastic and rake out anything in the joint.
- The faces are brushed clean and primed where the product requires it.
- We fit closed-cell backing rod to control the depth.
- We apply the sealant, tool it and check the whole run.
How to prepare
- Tell us about any water getting in
- Let us know about parking restrictions
- Mention if the joints have been sealed before
How to get a quote
To get a quote, ring 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. You will have a clear quote before work begins.