Surrey · England
External & façade joints in Bisley, Surrey
Movement joints in Bisley need attention? We cut out the old, prepare the joints and apply the right sealant.
- Moss and dirt in joints with no sealant left
- Joints pointed up with cement by mistake
- Joints with sealant missing in places
External mastic in Bisley
Joints in render and cladding are easy to overlook until a damp patch appears. We look over the joints, agree the ones to renew and reseal with a flexible, weatherproof product. We work on brickwork movement joints, copings & trims and joints between brick and frames, and people most often call us about sealant pulling away from one side of the joint and rigid filler in a joint that should flex.
Outbuildings, garages and conservatories around homes in places like Bisley add more joints to look after. Gutter ends, garage door frames and the joints where an extension meets the house are typical spots for leaks.
All of our work is guaranteed for twelve months, and the guarantee is the same wherever you are.
- Location
- Bisley (GU24)
- Region
- Surrey
- Cover
- A year, on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
DIY sealant or a professional job?
The biggest DIY mistake is sealing over old sealant. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. All the old material has to come out first.
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.
How the job changes by surface
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.
Joints between dissimilar materials
Different materials may need different primers. Both surfaces are cleaned and primed as the product requires.
What affects the cost of external mastic
Jobs vary more than people expect. The main factors:
- The product the joint needs
- Working hours on commercial sites
- How many areas need sealing
- Mould in or behind the old joints
What it costs depends on the size of the job, how much old material has to come out and how easy the joints are to reach. We give a clear quote before we start.
Asking for a quote
You do not need to know the technical terms. Just tell us:
- The type of property
- Roughly how big the job is
- Access, such as stairs, a lift or height
- Pictures of the joints, sent by email
Getting a quote is simple: let us know the job and the location and its rough size. Photos by email help us understand the job, and we’ll take it from there.
How to look after the new joints
After the cure time, these simple habits help:
- Leave the joints unpainted unless we’ve said otherwise
- Never let anyone fill a movement joint with mortar
- Wash walls gently around the sealant
- Walk round the building once a year and look at the joints
If you have more work done on the wall, such as new render, cladding or an opening, show the contractor the movement joints. They should be kept open and resealed, not filled.
Once a joint can’t move, the wall finds another way, often as cracks near the joint. Catch it early and you reduce the risk.
Walls and rooflines in Bisley
Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
In the older streets around Church of St John the Baptist, an extension built onto an older house moves differently, and the joint between them takes the strain. If you let a flat or house near Brookwood station, outside joints that have cracked can let damp into a rental, so check them between lets. If you look after a building such as Bisley CofE Primary School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Bisley is about 3 miles west of Woking, in Surrey. Wherever you are in the GU24 postcode area, we cover external mastic for homes and businesses. Bisley is one of 395 towns and villages in Surrey where we work. For nearby work, see our Reading page (17 miles or so).
Jobs for external mastic in GU24 is quoted and booked the same way as anywhere else. Whether your property is on Hawthorn Way, Germander Drive and Wilcot Close or a nearby road, our applicators can take on the job. With the A322 close by, Bisley is easy for our applicators to reach for external mastic. Other places close to Bisley include Lucas Green (1 mile north-west), West End (1 mile north), Knaphill (1 mile south-east), Sheet's Heath (1 mile south) and Penny Pot (1 mile north-east). Within a short drive, we also cover Guildford (6 miles south-east), Woking (3 miles east), Camberley (4 miles west), Farnham (11 miles south-west), Egham (8 miles north-east) and Walton-on-Thames (11 miles east).
Landmarks near Bisley
Around Bisley, our work takes us to homes and buildings near Gordon's School, Bisley and West End Commons and The Crown pub, among other places. Bisley’s nearest station is Brookwood station, about 1.6 miles south. Other landmarks nearby include The Peacocks (3.3 miles east) and The Museum of The National Rifle Association (1.4 miles south-west). Green spaces nearby include Brookwood Lye.
When it isn’t the sealant
New sealant cannot fix everything, and we’ll tell you before any work starts. It won’t solve:
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Adding movement joints to masonry that has none
- Cracked brickwork or render that needs a builder or plasterer
If in doubt, phone 0345 464 0079 or drop us an email and we will say what we think before booking.
What we seal
- Concrete & block
- Façade panels
- Joints between brick and frames
- Brickwork movement joints
- Copings & trims
- Render & cladding joints
Why it’s worth doing now in Bisley
An open joint keeps letting water into the wall with every downpour. Wet masonry is more easily damaged by frost around the joint, so the problem grows beyond the joint itself. In a smaller place like Bisley, wherever a wall is exposed, a failed outside joint is a real source of damp. Indoors, a failed seal lets water into floors and panels as it would anywhere.
Homes and businesses are quoted the same way: the amount of work, how we reach it and what it needs. Call for a quick quote and we’ll explain what it covers.
Why Bisley clients choose us
- Experience in homes, commercial sites and hotels
- A 12-month guarantee on all work
- Fully insured
- Old sealant always removed completely
See how sealant jobs are priced and our reviews.
How the visit works
Good joint work is mostly preparation, and we don’t rush it. Every joint is cleaned and dried before new material goes in. In total, it usually takes a few hours for a handful of joints, longer for a whole elevation. For a job in Bisley, 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 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.
- Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
How to prepare
- Mention any parking rules near the property
- Let us know about stairs, lifts or work at height
- Plan for the work area to be out of bounds to pets and children
How to get a quote
For a quick quote, get us on the phone, or send an email if you’d rather. Describe what needs sealing and we’ll explain what’s involved before giving you a price.
Advice
Bisley: your questions answered
Can you do external mastic in Bisley?
Yes. We work across London and the South East, and Bisley is part of that. You can ring 0345 464 0079 or send us an email and tell us what needs doing, and we’ll give you a clear price.
I let a flat near Brookwood station. Can you help?
Yes, landlords and agents are among the people we work for. Just ring 0345 464 0079 or email us with the address and what needs doing, and we’ll give you a clear quote.
Can you do several jobs on one visit?
Yes. Tell us about everything you’d like done and we will quote it together.
Are you ARBOMaster approved?
Yes. We hold ARBOMaster approved applicator status.
What does external mastic cost?
We don’t publish prices, because the cost depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
Is there a guarantee?
Yes. All our work carries a 12-month guarantee.
How often do external joints need resealing?
There’s no fixed answer: sunny, exposed elevations and busy joints wear faster. A yearly look will tell you when they need doing. Our work comes with a one-year guarantee.
Why do you put foam in the joint first?
We fit closed-cell backing rod wherever the joint depth needs controlling. It controls the depth and stops the sealant bonding to the back.