Bracknell Forest · England
External & façade joints in Martins Heron, Bracknell Forest
External mastic in Martins Heron from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Failed seals between different materials
- Hard, crazed mastic that has stopped moving
- Movement joints filled with mortar instead of sealant
What the job involves on each surface
Brickwork movement joints
Vertical joints in long brick walls let the brickwork expand without cracking. We reseal them with a low-modulus sealant over backing rod coloured to suit the wall.
Concrete and blockwork
Big joints in concrete need careful depth control. Backing rod sized to the joint sets it.
External mastic in Martins Heron
On houses, flats and commercial buildings across Martins Heron, we reseal joints in brickwork, render, cladding and façade panels. The preparation is the same whatever the wall: clean joint faces and the right depth. If you are dealing with rigid filler in a joint that should flex and plants rooting in failed movement joints, we can put it right.
In and around Martins Heron, 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.
You’re covered for a year from the day we finish. If there’s a problem with it, please call 0345 464 0079 or email us.
- Place
- Martins Heron (RG12, SL5)
- Region
- Bracknell Forest
- Cover
- 12 months on all our work
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Why it’s worth doing now in Martins Heron
A low-modulus sealant is chosen because it moves without pulling hard at the edges. That matters on brick, render and concrete, which can be weaker at the face. Too stiff a sealant can pull at the edges and break them. Homes in smaller places like Martins Heron 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.
What you pay reflects the work, not guesswork. That’s why we ask about the job first and give you a clear quote before we start.
Why us?
- Colour picked to suit the job
- Anti-fungal sanitary silicone in wet areas
- Old sealant always removed completely
- Arbo and Everbuild products
See our cost guide and what customers say.
Landlords, agents and businesses in Martins Heron
In hotels, rooms out of use cost money, so the work can be planned room by room around your bookings where we can. We have worked in hotels as well as homes and businesses.
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
Aftercare tips
Aftercare is simple:
- Keep soil, plants and ivy away from the joints
- Wash walls gently around the sealant
- Check the sealant is paintable before painting near it
- Point out the joints to other trades
Don’t let soil, plants or ivy build up against the new joints. Damp material against the sealant shortens its life.
Leaks behind façade panels and render often go unseen. When it finally shows inside, the joint may have been open for years.
Towns and villages near Martins Heron
What else we do in Martins Heron
Walls and rooflines in Martins Heron
The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. Bracknell, which Martins Heron is part of, is one of England’s post-war new towns. Many homes date from the post-war decades and were built in phases, so neighbouring houses often have rooflines and wall joints of the same age, wearing out at the same time.
If you let a flat or house near Martins Heron station, failed wall and movement joints let damp in, so they’re worth checking between tenancies. In the older streets around St Paul, older walls, gutters and the joints where extensions meet them need a flexible sealant. Managing a site like Harmans Water Primary School? Then movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Martins Heron is about 1 mile east of Bracknell, in Bracknell Forest. For external mastic in and around Martins Heron, please phone 0345 464 0079 or send us an email for a quick quote. We’re based in Crawley and cover Bracknell Forest, Martins Heron included. Across Bracknell Forest, we cover 41 places, Martins Heron among them. We also work in Reading, around 11 miles away.
Every address in RG12 and SL5 is within our area for external mastic. That includes homes and businesses on Bog Lane, Radnor Road and London Road. If you’re just outside Martins Heron, we cover The Warren (1 mile south), Jennett's Park (1 mile west), Forest Park (1 mile south), Bullbrook (1 mile north-west) and Harmans Water (1 mile south-west). Larger places within reach include Sandhurst (5 miles south-west), Binfield (3 miles north-west), Popeswood (3 miles west), College Town (5 miles south-west), Farley Wood (3 miles west) and Amen Corner (3 miles west).
Near you in Martins Heron
Typical jobs here are in homes near Ranelagh School and LVS Ascot and the streets around them. Martins Heron has its own railway station: Martins Heron station. Nearby you’ll also find Heatherwood Hospital (1.5 miles east) and The Lexicon (1.3 miles north-west). Open spaces near Martins Heron include Heath Lake and Wildmoor Heath.
Honest limits
In fairness, there are a few things sealant won’t fix:
- Loose or hollow render, which needs re-rendering
- Cracked brickwork or render that needs a builder or plasterer
- Adding movement joints to masonry that has none
If in doubt, phone 0345 464 0079 or email us and we’ll say what we think.
Joints and surfaces we work on
- Façade panels
- Brickwork movement joints
- Render & cladding joints
- Concrete & block
- Copings & trims
- Joints between brick and frames
Common questions in Martins Heron
I let a flat near Martins Heron station. Can you help?
Yes. We work for letting agents and landlords as well as homeowners. Just ring 0345 464 0079 or email us with the address and what needs doing, and we’ll give you a clear price.
Should the sealant in an older Martins Heron home be renewed?
Normally, yes, if it’s cracked, shrunk, mouldy or coming away. The key is cutting all the old sealant out, as new sealant will not bond to it.
What should I tell you?
Where the job is, what the problem is and roughly how big it is. If you can, email a few photos.
Where are you based?
Our base is Crawley, with over 20 years’ experience. We work across South East England, London and Scotland.
Do you come to Martins Heron?
Yes. We cover Martins Heron, as part of our work across South East England, London and Scotland. For a quote, phone 0345 464 0079 or drop us an email.
Is it OK to seal over old sealant?
No, it won’t last. It may look fine at first, but the new layer lifts away from the old one. Removing the old sealant completely is the only lasting way.
Do you work at height?
It depends on the height and the site. Ground-floor joints are simple; for higher ones, send details and we will confirm the access.
Do you seal joints where cladding meets other materials?
Yes. Where different materials meet is one of the most common joints we seal. We use a flexible sealant suited to both surfaces with primer where required.
How it works
Our applicators work methodically: protect, prepare, seal, tidy. Typically it takes a few hours to a few days, depending on the length of joint and the access. For a job in Martins Heron, we agree the time, the access and parking before the day. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- We start by checking each joint, agreeing the ones to redo and how we will reach them.
- We cut out the failed sealant and rake out any dirt or growth.
- 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.
Preparing for the visit
- Mention any tricky access
- Keep children and pets away from the work area
- Tell us about any water getting in
Ask for a quote
To get a quote, phone 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 we start.
Related advice
What affects the cost of external mastic
You will get a clear quote before we start. It takes into account:
- How much old sealant there is and how hard it is to remove
- Access and height
- The product the joint needs
- When we can work, for business premises
Doing several joints on one visit is usually more efficient than separate visits, so it’s worth mentioning everything you’d like done. We will give you a clear price for the lot.
Helping us quote
Photos by email are helpful but not essential. Try to tell us:
- Access, such as stairs, a lift or height
- If it’s domestic, commercial or a hotel
- A few pictures by email, if you can
- Any previous sealing or DIY work
Quotes start with a quick conversation. Describe the problem, the location and the size of the job. When it suits you, phone 0345 464 0079 or drop us an email.