Surrey · England
Brookwood External Mastic
External mastic for Brookwood, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Movement joints filled with mortar instead of sealant
- Plants rooting in failed movement joints
- Sealant that has lost its bond to the brick or render
External mastic in Brookwood, done properly
Low-level joints can normally be done from the ground. For joints higher up, give us some details of the building and we will confirm what’s needed to reach them safely. If you’re dealing with sealant pulling away from one side of the joint and rain getting behind render or cladding at a joint, we can help.
Older homes in small places like Brookwood may be stone, brick or timber-framed, often with later extensions. The joints where those materials meet are the weak points, and they need the right sealant at the right depth.
Big or small, it’s backed by our one-year guarantee.
- Place
- Brookwood (GU24)
- Region
- Surrey
- Guarantee
- 12 months on all our work
- Quotes
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Brookwood buildings and the weather
Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Homes close to Saint Saviour's Church include some older properties, and old and new materials meet at the roofline and walls, which is where sealant earns its keep. Schools such as Brookwood Primary School are buildings too, and its movement joints, gutters and trims need looking after like any other building’s.
Brookwood is about 3 miles west of Woking, in Surrey. For external mastic in and around Brookwood, please phone 0345 464 0079 or email us for a quick quote. We’re based in Crawley and cover Surrey, Brookwood included. Brookwood is one of 395 towns and villages in Surrey where we work for external mastic. We also work in Reading, about 18 miles from Brookwood.
Every address in GU24 is within our area for external mastic. Streets in the area include Sheet's Heath Lane, Connaught Road and Heath Drive. We also cover the places around Brookwood: Sheet's Heath (1 mile north), Knaphill (1 mile north-east), Bisley (1 mile north), Lucas Green (2 miles north) and West End (2 miles north). Within a short drive, we also cover Guildford (5 miles south-east), Woking (3 miles east), Camberley (4 miles north-west), Farnham (9 miles south-west), Egham (9 miles north-east) and Walton-on-Thames (11 miles north-east).
Near you in Brookwood
Around Brookwood, our work takes us to homes and buildings near Knowl Hill School, Nag's Head Inn and Brookwood Lye. Brookwood has its own railway station: Brookwood station. Other landmarks nearby include Brookwood Hospital (1.1 miles north-east) and The Peacocks (3.5 miles east). Green spaces nearby include Brookwood Lye.
Questions from Brookwood
Can you do external mastic in Brookwood?
Yes, Brookwood is within the area we cover. We work across London and the South East. You can call 0345 464 0079 or send us an email and let us know what needs doing.
Can you help a landlord with a rental near Brookwood station?
Yes, rental work is part of what we do. You can call 0345 464 0079 or drop us an email with the address and a few details, and we will give you a fixed price before work begins.
Can you match the colour of my brickwork?
The aim is a neat, even joint in a colour that suits the wall. Colour is agreed with you before we begin.
What do you need from me for a quote?
Let us know what needs doing and where, plus pictures if you have them. We’ll ask anything else we need to know.
Do I have to be there?
For indoor joints, yes, someone needs to let us in. Once we have agreed the job, you don’t need to watch us work.
How long should I leave it?
Many sealants skin over quickly but take longer to cure fully. We’ll tell you how long to leave the joint.
Do you do commercial work?
Yes. We’ve worked for hotels, offices and other businesses.
Do you remove the old sealant?
Yes, always, and completely. New sealant won’t bond properly to old, so the joint is cleaned back first.
How it works
All our tools and materials come with us in the van, so there’s nothing for you to buy. Once we have agreed what’s being done, we protect the area and start. It normally takes anything from a few hours to several days, depending on the building. Somewhere like Brookwood needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- We start by walking round the building and agreeing the joints and the access.
- 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.
- Backing rod sized to the joint goes in to set the depth.
- The exterior sealant is applied, tooled and checked along its length.
Getting ready for the visit
- Let us know about earlier repairs to the joints
- Where the joints are inside, avoid wetting them before we arrive
- Tell us about access, such as stairs, a lift or high-level joints
Getting a quote
Asking for a quote is easy: let us know the job and the location. Photos by email help us understand the job.
Read more
How the job changes by surface
Cladding and façade panels
Panels heat up and cool down quickly, so the joint sealant has to cope with frequent movement. The sealant is chosen with that in mind.
Copings and trims
Metal and stone copings both move with temperature, so a flexible sealant suits them best year round.
Places near Brookwood
Other services in Brookwood
Looking after it afterwards
After the cure time, these simple habits help:
- Act on the first splits you see
- Don’t let climbing plants root in the sealant
- Wash walls gently around the sealant
- Walk round the building once a year and look at the joints
Have a quick look at the joints each spring. Watch for splits, edges coming away or growth in the joint.
Water getting behind cladding or render can go unnoticed for a long time. By the time there’s a damp patch, the damage can be well established so early resealing is worth it.
What happens if it’s left?
The longer a joint stays open, the more water the wall takes in. In cold weather, frost can damage wet brick and render, so the problem grows beyond the joint itself. Older cottages and farmhouses around Brookwood can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
There are no prices on our website, because each job is priced on what it involves. Call for a quick quote.
Why book with us
- Old sealant always removed completely
- Every job guaranteed for a year
- Sealant colour chosen to suit
- A choice of colours where the product allows
See what affects the cost or our reviews.
When something else is needed
Sealant is not the answer to every problem, and we’ll tell you before any work starts. It will not solve:
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Cracks in the bricks or render themselves, away from the joints
- Cutting new joints into brickwork, which is building work rather than sealant work
If in doubt, call 0345 464 0079 or email us and we will say what we think.
Where we work in Brookwood
- Façade panels
- Joints between brick and frames
- Render & cladding joints
- Brickwork movement joints
- Concrete & block
- Copings & trims
DIY versus a professional finish
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
A DIY attempt does not rule out a professional job. We remove it and do the joint properly.
Signs you need external mastic in Brookwood
Every building moves. Clay bricks expand slightly over their life, concrete and block shrink, and everything moves with temperature and wet. The sealant in the movement joints takes that strain.
Common reasons people contact us are:
- Movement joints filled with mortar instead of sealant
- Damp patches traced to an open external joint
- Leaking joints around cladding and façade panels
- Failed seals between different materials
For landlords with property near Brookwood station, split movement joints are easy to miss on a rental until damp shows inside.
Before you book anyone
- Is VAT in the price?
- When the joint can take water or movement
- Who turns up on the day
- Whether the sealant suits the joint