Buckinghamshire · England
External Mastic in Horsleys Green
Movement joints in Horsleys Green need attention? We remove the old material, prepare the joints and seal them properly, with a 12-month guarantee.
- Brick movement joints where the sealant has split
- Hard, crazed mastic that has stopped moving
- Sealant pulling away from one side of the joint
Landlords, agents and businesses in Horsleys Green
Mouldy or split sealant often shows up at the end of a tenancy. Several properties can go on one quote.
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. We’ve worked in hotels as well as homes and businesses.
About our external mastic in Horsleys Green
Ground-floor and low-level joints are straightforward to reach. For joints higher up, give us some details of the building and we will confirm what access is needed. We work on brickwork movement joints, copings & trims and joints between brick and frames, and common reasons people get in touch are gaps where render, brick and frames meet and weeds or debris growing in open joints.
External sealant needs dry, clean surfaces, so work around Horsleys Green is planned for dry weather. Let us know about access to every wall, plus any garages or outbuildings.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we will sort it.
- Location
- Horsleys Green (HP14)
- Wider area
- Buckinghamshire
- Cover
- 12 months on all our work
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Keeping the joints in good condition
So the new joints stay in good condition:
- Check the sealant is paintable before painting near it
- Keep soil, plants and ivy away from the joints
- Deal with leaking gutters that soak the joints below
- Look over the joints every year, ideally after winter
Do not let soil, plants or ivy build up against the new joints. Anything that holds water against the joint wears it out sooner.
An open movement joint lets rain into the wall every time it pours. Over time it can mean damp inside, stained render or frost-damaged brick which cost more to put right than the joint.
Honest limits
New sealant cannot fix everything, and we will tell you before we start. It won’t solve:
- Rising or penetrating damp from elsewhere in the wall
- Cracking across the wall rather than at a joint
- Walls that need new movement joints cut into them
Not sure which it is? You can phone 0345 464 0079 or email us and we will tell you honestly.
Surfaces we seal
- Façade panels
- Brickwork movement joints
- Copings & trims
- Joints between brick and frames
- Render & cladding joints
- Concrete & block
What happens if it’s left?
An open joint keeps letting water into the wall with every downpour. In cold weather, frost can damage wet brick and render around the joint, so the damage spreads beyond the joint. Around Horsleys Green, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
Instead of a standard rate, we look at what your job involves: how many joints, what’s in them now and how we reach them. You will know the price before we begin.
What you get with us
- 12-month guarantee on every job
- Domestic, commercial and hotel work
- Fully insured
- Anti-fungal sanitary silicone in wet areas
Take a look at our cost guide and customer reviews.
What we’re called out for in Horsleys Green
If plants are growing out of a joint, the sealant has generally failed or was never there. Dirt and roots then trap moisture in the joint and make things worse.
If you can see any of these, it’s time to have the joints looked at:
- Leaking joints around cladding and façade panels
- Old sealant gone brittle and cracked
- Movement joints with cracked, split or missing sealant
- Rigid filler in a joint that should flex
Letting a property close to Saunderton station? Then failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Questions to ask before you book
- Who turns up on the day
- What guarantee comes with the work
- What preparation is included
- What insurance they hold
What external mastic looks like in Horsleys Green
Historic houses like West Wycombe Park House (about 2.7 miles east) are a reminder that the area around Horsleys Green has older buildings as well as new. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth. 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.
Schools such as The Mary Towerton School At Studley Green are buildings too, and its movement joints, gutters and trims need looking after like any other building’s. Historic houses such as West Wycombe Park House, about 2.7 miles east, show how far back building around Horsleys Green goes, and older homes nearby need a sealant that suits their walls.
Horsleys Green is about 5 miles west of High Wycombe, in Buckinghamshire. Horsleys Green gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a one-year guarantee. Horsleys Green is one of 263 towns and villages in Buckinghamshire we cover. For nearby work, see our Reading page, about 15 miles away.
Every address in HP14 is covered for external mastic. We also cover the places around Horsleys Green: Beacon's Bottom (1 mile north), Studley Green (1 mile east), Waterend (1 mile north), The City (1 mile north) and Green End (1 mile north-east). Within a short drive, we also cover Aylesbury (12 miles north), High Wycombe (5 miles east), Chesham (12 miles east), Marlow (6 miles south-east), Amersham (11 miles east) and Beaconsfield (10 miles east).
Around Horsleys Green
We work in homes and buildings around Studley Arms, among other places. The nearest railway station is Saunderton station, about 2.6 miles north-east. Other landmarks nearby include Wycombe Hospital (5 miles east). For a walk, there’s Bald Hill and Yoesden.
DIY sealant or a professional job?
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
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.
Questions from Horsleys Green
Do you cover smaller places like Horsleys Green?
Yes, Horsleys Green is covered. We work across London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Can you do external mastic in Horsleys Green?
Yes, Horsleys Green is within the area we cover. We work across London and the South East. You can ring 0345 464 0079 or drop us an email and tell us what needs doing, and we will give you a clear quote.
Do I have to be there?
If the work is inside, we need someone to let us in. After that, you can carry on with your day.
Is there a guarantee?
Yes, for a year. If anything is not right with the work within the year, let us know and we will sort it.
What colours does the sealant come in?
Exterior sealants are made in a range of colours, from greys and browns to whites and stone shades. We pick the one that suits your wall best.
How long does external mastic last?
It varies from wall to wall: joints on exposed walls or with a lot of movement age sooner. A yearly look will tell you when they need doing. Our work comes with a 12-month guarantee.
What information do you need?
The location, the problem and the rough size of the job. Photos by email help too.
How long before the joint can be used?
Most sealants are touch-dry well before they’re fully cured. We will give you the cure time for the product we used.
How it works
A visit follows a simple pattern: we check the joints, protect the area around them, carry out the job and clear up. Most jobs take a few hours to a few days, depending on the length of joint and the access. Somewhere as small as Horsleys Green, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We look at every joint and agree a colour to suit the wall.
- Failed sealant is removed back to clean, sound faces.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- Primer is applied wherever the sealant needs it.
- We gun in low-modulus sealant and tool it neatly.
Preparing for the visit
- Mention any tricky access
- Keep pets and children clear of the area while we work
- Clear the area around the work
How to get a quote
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is, and email pictures if that is easy.