Surrey · England
External & façade joints in Godalming, Surrey
Sealing brickwork movement joints, render, cladding and façade joints in Godalming, with a one-year guarantee on every job. Call for a quick quote.
- Movement joints filled with mortar instead of sealant
- Sealant that has lost its bond to the brick or render
- Weathered mastic that no longer stretches
External mastic in Godalming, done properly
Joints between dissimilar materials, like brick against render or concrete against a steel frame, see movement from both sides. A flexible exterior sealant takes up that movement where a rigid filler would soon crack. Typical jobs include water getting into walls through failed joints and joints pointed up with cement by mistake, across joints between brick and frames, copings & trims and brickwork movement joints.
Outbuildings, garages and conservatories around homes in places like Godalming add more joints to look after. Leaks usually start at a gutter end, a garage door frame or where an extension meets the house.
Big or small, it’s backed by our one-year guarantee.
- Place
- Godalming (GU7, GU8)
- Wider area
- Surrey
- Guarantee
- One year on every job
- Quotes
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
What we’re called out for in Godalming
Weeds, moss and debris in a joint are a sign the sealant has gone. Dirt and roots then trap moisture in the joint.
If you can see any of these, it’s time to have the joints looked at:
- Sealant pulling away from one side of the joint
- Leaking joints around cladding and façade panels
- Damp patches traced to an open external joint
- Plants rooting in failed movement joints
For landlords with property near Godalming station, failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Comparing quotes
- Whether all the old sealant comes out first
- What the cure time is
- The length of the guarantee
- Who does the work, and how experienced they are
What affects the cost of external mastic
The quote reflects the job in front of us. We look at:
- Any mould that needs treating
- How many areas need sealing
- The number and length of the joints
- Which sealant suits the joint
Rather than a set price list, we look at what your job involves: the amount of work, the old material and the access. The price is agreed before we begin.
What to tell us for a quote
Photos by email are helpful but not essential. Try to tell us:
- Whether it’s a home or a business
- Any access issues, like height or stairs
- The rough size of the job
- Photos by email, if that is easy
Getting a quote is simple: tell us what needs doing and where. A few photos by email make the job easier to understand.
The process
Once we’re on site, we check the joints match what you told us. If we find something unexpected, we talk it through with you first. Most jobs then take a few hours to a few days, depending on the length of joint and the access. A visit to Godalming is planned like any other: the time, the access and where to park are agreed in advance. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- We start by walking round the building and agreeing the joints and the access.
- Every bit of old sealant and any mortar or debris is cut out.
- The faces are brushed clean and primed where the product requires it.
- Backing rod sized to the joint goes in to set the depth.
- We apply the sealant, tool it and check the whole run.
Before we arrive
- Mention any parking rules near the property
- Let us know if you’ve seen damp or leaks
- Keep pets and children clear of the area while we work
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 talk you through the work.
Advice
Looking after it afterwards
Good habits help new joints last longer. A few tips:
- Tell anyone working on the walls about the movement joints
- Never let anyone fill a movement joint with mortar
- Check the sealant is paintable before painting near it
- Keep high-pressure jets off the joints
Give the sealant the cure time we tell you before anything rubs against it. Most exterior sealants skin fast but take longer to cure right through.
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.
Common questions in Godalming
Is Godalming within the area you cover?
Yes, Godalming is covered. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Can you do external mastic in Godalming?
Yes. We work across London and the South East, and Godalming is part of that. You can phone 0345 464 0079 or send us an email and let us know what needs doing.
How long before the joint can be used?
Cure times vary by product and the conditions. We tell you how long to leave it before we go.
Can you match the colour of my brickwork?
Exterior sealants are made in a range of colours, from greys and browns to whites and stone shades. We choose the closest to your brick or render.
Are you ARBOMaster approved?
Yes. Mr Mastic is an ARBOMaster approved applicator and we’re fully insured too.
Where do you work from?
We’re a Crawley-based firm, with over 20 years’ experience. We work across South East England, London and Scotland.
Do you have insurance?
Yes. Mr Mastic is fully insured, and we’ve been doing sealant work for more than 20 years.
How long will you be here?
That depends on the amount of work, but as a guide it takes a few hours to a few days, depending on the length of joint and the access. We’ll tell you when we quote.
Surface by surface
Cladding and façade panels
If the façade has a specified sealant, that’s what we use or an approved alternative. Tell us what the building has when you get in touch.
Joints between dissimilar materials
Brick against render, concrete against metal, stone against timber: every change of material is a joint. We seal the joint with a flexible exterior sealant so the movement is taken up.
External mastic in Godalming: local notes
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. With historic houses such as Loseley Park (about 2.2 miles north) nearby, there’s older building stock in the area around Godalming as well as newer homes. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth.
Managing a site like Moss Lane School? Then movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. Homes close to St Edmund Church include some older properties, and older walls, gutters and the joints where extensions meet them need a flexible sealant.
Godalming is about 5 miles south of Guildford, in Surrey. For external mastic in and around Godalming, it’s easy to get a quote: please call 0345 464 0079 or send us an email. We cover Surrey from our Crawley base. 395 places in Surrey are on our list, large and small. For nearby work, see our Crawley page, about 19 miles away.
Work in GU7 and GU8 works the same way as everywhere else we cover. Streets in the area include High Street, Station Road and Market Mews, and we cover them all. Being close to the A3100 and B2130, Godalming is simple for us to get to for external mastic. We also cover Aaron's Hill (1 mile west), Busbridge (1 mile south-east), Farncombe (1 mile north), Tuesley (1 mile south) and Upper Eashing (1 mile west). We also work in nearby towns such as Guildford (5 miles north), Woking (9 miles north), Camberley (11 miles north-west), Farnham (8 miles west), Dorking (13 miles east) and Frimley (10 miles north-west).
What’s near Godalming
Around Godalming, our work takes us to homes and buildings near The Richmond Arms Public House, Godalming College and St Hilary's School, among other places. Godalming has its own railway station: Godalming station. Nearby you’ll also find Guildford Castle (3.9 miles north-east) and Godalming Museum (under half a mile north). Not far away are Frith Hill and Farncombe Wood.
Work for landlords, hotels and businesses
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance.
We regularly work with letting and managing agents. Tell us the address, the job and how access works.
DIY sealant or a professional job?
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is.
Sealing over old silicone is the commonest DIY error. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. All the old material has to come out first.