Surrey · England
External & façade joints in Grafham, Surrey
Sealing brickwork movement joints, render, cladding and façade joints for Grafham, backed by a 12-month guarantee. Call for a quick quote.
- Sealant that has lost its bond to the brick or render
- Plants rooting in failed movement joints
- Failed sealant between panels on a façade
How we handle external mastic in Grafham
External mastic is a job where short cuts show quickly. Overfilled joints, missing backing rod and sealant laid over old sealant all tend to fail early. We strip the joint back and start again. If you’re dealing with cracked joints where brick meets render or frames and sealant pulling away from one side of the joint, we can help, on façade panels, joints between brick and frames and render & cladding joints alike.
Outside joints can only be sealed when they’re dry, so work in Grafham is booked around the forecast. Tell us about access to all sides of the building, including outbuildings and garages.
Our work is backed for twelve months.
- Location
- Grafham (GU5)
- Wider area
- Surrey
- Guarantee
- One year on every job
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
When to call us in Grafham
Sometimes a movement joint was filled with mortar or a rigid filler, often by someone who didn’t know what it was for. The joint can’t move, so the wall cracks somewhere else instead.
These are the problems we are asked about most:
- Moss and dirt in joints with no sealant left
- Movement joints filled with mortar instead of sealant
- Sealant that has lost its bond to the brick or render
- Leaking joints around cladding and façade panels
If you live in an older home near Church of St Andrew, the joints between older walls, newer extensions and the roofline need a sealant that can move.
Before you book anyone
- What happens if they find a problem under the old sealant
- What guarantee comes with the work
- Is VAT in the price?
- What product goes in the joint
Work for landlords, hotels and businesses
Mouldy or split sealant often shows up at the end of a tenancy. Several properties can be quoted together.
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
How the job changes by surface
Concrete and blockwork
Blockwork and concrete shrink over time and move with the seasons. We reseal their joints with backing rod and a flexible product.
Render joints
Render is weaker at the surface than brick, so a sealant that stretches easily protects the edges. Priming is done where the sealant calls for it.
Looking after it afterwards
Aftercare is simple:
- Keep water from gutters off the wall
- Check external joints each spring
- Keep movement joints as flexible joints, not mortar
- Check the sealant is paintable before painting near it
Follow the cure time we give you before the joint is knocked or disturbed. Most exterior sealants skin fast but take longer to cure right through.
A joint that has stopped moving pushes the movement elsewhere, generally as cracking in the brickwork or render nearby. Resealing it early helps prevent that.
What we can’t put right
It helps to know what we can’t do too:
- Loose or hollow render, which needs re-rendering
- Structural movement, which needs a surveyor or engineer
- Cracks in the bricks or render themselves, away from the joints
If in doubt, call 0345 464 0079 or drop us an email and we will say what we think.
Surfaces we seal
- Joints between brick and frames
- Copings & trims
- Façade panels
- Render & cladding joints
- Concrete & block
- Brickwork movement joints
Grafham buildings and the weather
With historic houses such as Chilworth Manor (about 3.8 miles north) nearby, there’s older building stock in the area around Grafham as well as newer homes. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth. 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.
If you let a flat or house near Chilworth station, outside joints that have cracked can let damp into a rental, so check them between lets.
Grafham is about 6 miles south of Guildford, in Surrey. Anywhere in GU5, we can carry out external mastic at your property. Across Surrey, we cover 395 places, and Grafham is one of them. Our Crawley page covers work nearby.
All of GU5 is within our area for external mastic, from the main roads to the quietest streets. If you’re just outside Grafham, we cover Birtley Green (1 mile north), Shamley Green (1 mile north), Thorncombe Street (1 mile west), Stroud Common (1 mile north-east) and Rowly (2 miles east). Within a short drive, we also cover Guildford (6 miles north), Woking (11 miles north), Camberley (14 miles north-west), Farnham (11 miles west), Reigate (15 miles east) and Dorking (10 miles north-east).
Local landmarks in Grafham
Around Grafham, our work takes us to homes and buildings near Cucknell's Wood and the streets around them. The nearest railway station is Chilworth station, roughly 3.5 miles north of the centre. Nearby you will also find Godalming Museum (3.6 miles north-west) and Guildford Castle (4.9 miles north). For a walk, there’s St Martha's Hill and Colyer's Hanger and Lower Lake.
Nearby places to Grafham
Also in Grafham
FAQs for Grafham
Is Grafham within the area you cover?
Yes, Grafham 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.
Is Grafham in your area for external mastic?
Yes, Grafham is within the area we cover. Our work covers London and the South East. You can phone 0345 464 0079 or email us and tell us what needs doing, and we’ll give you a clear quote.
How long does external mastic take?
Most jobs take a few hours to a few days, depending on the length of joint and the access, including the preparation. We will confirm how long when we quote.
Do you guarantee your work?
Yes: twelve months. If there’s a problem with our work in that time, tell us and we will put it right.
Where do you work from?
Our base is Crawley. Our area covers South East England, London and Scotland.
Why do you put foam in the joint first?
The foam is closed-cell backing rod. It stops the sealant going in too deep and bonding to three sides.
Is there any odour?
Some sealants have a smell while they cure. Ventilation helps.
Can tenants book the work?
Of course. Ask your landlord first, and we can send them the quote if that helps.
Leave it or put it right?
Sealing over the top of old mastic doesn’t hold for long. New sealant doesn’t bond well to old, weathered sealant, so the old joint is cut out fully first. Older cottages and farmhouses around Grafham can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all play a part, and we’ll explain the quote if you ask.
Why book with us
- More than 20 years in sealant work
- Every job guaranteed for a year
- You choose the colour before work begins
- A choice of colours where the product allows
Read what affects the cost or customer reviews.
What we do, step by step
Once we’re on site, we check the joints match what you told us. If anything is different, we explain it before carrying on. After that, the work takes a few hours to a few days, depending on the length of joint and the access. For a village or hamlet like Grafham, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. 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.
- We fit closed-cell backing rod to control the depth.
- The exterior sealant is applied, tooled and checked along its length.
Before we arrive
- Tell us about any previous sealing or DIY attempts
- Plan for the work area to be out of bounds to pets and children
- Move anything stored near the joints
Ask for a quote
There’s no standard price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To arrange one, call 0345 464 0079 or send us an email.