Windsor and Maidenhead · England
External & façade joints in Broomhall, Windsor and Maidenhead
External mastic across Broomhall and nearby, with old sealant always removed completely and a 12-month guarantee.
- Water getting into walls through failed joints
- Failed sealant between panels on a façade
- Movement joints with cracked, split or missing sealant
For landlords and businesses
Hotels need rooms back in use, 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.
Landlords and agents in Broomhall can book us as well as homeowners. Sealant work between tenants keeps a property looking cared for before the next move-in.
About our external mastic in Broomhall
Low-level joints can normally be done from the ground. For joints higher up, give us some details of the building and we’ll confirm what access is needed. We’re often asked to deal with rigid filler in a joint that should flex and moss and dirt in joints with no sealant left, across render & cladding joints, brickwork movement joints and joints between brick and frames.
Around Broomhall, garages, outbuildings and extensions all add to the joints on the outside of a home. Gutter ends, garage door frames and the joints where an extension meets the house are typical spots for leaks.
A 12-month guarantee comes as standard, so you are covered after we’ve gone.
- Where
- Broomhall (SL5)
- Region
- Windsor and Maidenhead
- Guarantee
- One year on every job
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Places near Broomhall
What else we do in Broomhall
External mastic in Broomhall: local notes
Historic houses like Botleys Mansion (about 4.4 miles east) are a reminder that the area around Broomhall has older buildings as well as new. Where a home is older, 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.
For landlords with property near Sunningdale station, outside joints that have cracked can let damp into a rental, so check them between lets. Homes close to Holy Trinity Church include some older properties, and an extension built onto an older house moves differently, and the joint between them takes the strain.
Broomhall is about 4 miles south-west of Egham, in Windsor and Maidenhead. For external mastic in and around Broomhall, please call 0345 464 0079 or email us for a quick quote. We cover Windsor and Maidenhead from our Crawley base. Across Windsor and Maidenhead, we cover 57 places, and Broomhall is one of them. Reading is on our list too, around 15 miles away.
All of SL5 is covered for external mastic. Streets in the area include London Road, Abbey Wood and Cedar Drive. Other places close to Broomhall include Sunningdale (1 mile north-west), Brick Hill (1 mile south), South Ascot (2 miles west), Windlesham (2 miles south-west) and Chobham (3 miles south-east). Further out, we also cover Maidenhead (10 miles north-west), Windsor (6 miles north), Boyn Hill (9 miles north-west), North Ascot (3 miles north-west), Cookham (12 miles north) and Furze Platt (11 miles north-west). Being one of Windsor and Maidenhead’s larger places, Broomhall has every kind of property, from flats to offices.
Near you in Broomhall
Typical jobs here are in homes near Charters School, Silwood Park and Holy Trinity CofE Primary School, among other places. Broomhall has its own railway station: Sunningdale station. Other landmarks nearby include Chobham Museum (3.3 miles south) and Heatherwood Hospital (2.7 miles north-west). For a walk, there’s Gracious Pond and Virginia Water Lake.
Keeping the joints in good condition
A little care helps the new joints last. We recommend:
- Check external joints each spring
- Wash walls gently around the sealant
- Show decorators and builders where the movement joints are
- Fix overflowing gutters above sealed joints
Have a quick look at the joints each spring. Watch for splits, edges coming away or growth in the joint.
Act while the splits are small. At that stage it’s a simple cut out and reseal with no damage behind it to deal with.
What we’re called out for in Broomhall
Weeds, moss and debris in a joint are a sign the sealant has gone. Roots and dirt hold water against the wall and make things worse.
Common reasons people contact us include:
- Failed sealant between panels on a façade
- Gaps where render, brick and frames meet
- Sealant that has lost its bond to the brick or render
- Rigid filler in a joint that should flex
For site and facilities teams at buildings such as Sunningdale School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
What to look for in a quote
- What happens if the job turns out different
- How long to leave it before use
- Whether they seal over old material or remove it
- Who does the work, and how experienced they are
Different surfaces, different methods
Joints between dissimilar materials
Each side of the joint may need its own preparation. We prepare both faces so the sealant bonds properly.
Render joints
Cracks along render joints let water in behind the coat. Resealing the joints early keeps water out and helps it last.
Broomhall: your questions answered
Can you help a landlord with a rental near Sunningdale station?
Yes. We work for letting agents and landlords as well as householders. You can call 0345 464 0079 or drop us an email with the details for a clear quote.
Will you come out to Broomhall?
Yes. Broomhall is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Can you work on commercial sites?
Yes. We’ve worked for hotels, offices and other businesses and we are fully insured.
How do I get a quote for external mastic in Broomhall?
Size, access and the old material all affect the cost. Call for a quick quote and we’ll talk you through it.
Why do you put foam in the joint first?
Backing rod controls the sealant depth and keeps it off the back of the joint. Then the sealant bonds to two faces and can move.
Do you take out the old sealant first?
Yes, always, and completely. New silicone does not stick to old silicone, so any old material comes out before anything new goes in.
Is there a guarantee?
Yes. There’s a 12-month guarantee on every job.
Should I point up the gap in my brickwork?
No. Mortar locks the joint solid, so the movement cracks the wall elsewhere. Use a flexible sealant with backing rod.
DIY versus a professional finish
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
How it works
You don’t need to clear the whole room or building, just the space around the work. We protect the rest, and the job takes anything from a few hours to several days, depending on the building in most cases. For a job in Broomhall, we agree the time, the access and parking before the day. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- We start by checking each joint, agreeing the ones to redo and how we’ll reach them.
- The old mastic and anything lodged in the joint is removed.
- 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.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
How to prepare
- Clear the area around the work
- Mention if the joints have been sealed before
- Where the joints are inside, avoid wetting them before we arrive
Ask for a quote
For a quote, call 0345 464 0079 or send us an email with the location and a short description of the problem. We’ll give you a clear quote before any work starts.
Read more
What sealant work can’t fix
Honest advice matters more to us than a booking, so here’s what new sealant will not do:
- Loose or hollow render, which needs re-rendering
- Cracked brickwork or render that needs a builder or plasterer
- Structural movement, which needs a surveyor or engineer
Not sure which it is? You can ring 0345 464 0079 or drop us an email and we’ll tell you honestly before booking.
What we seal
- Façade panels
- Copings & trims
- Joints between brick and frames
- Render & cladding joints
- Concrete & block
- Brickwork movement joints