Surrey · England
External & façade joints in Farncombe, Surrey
Sealing brickwork movement joints, render, cladding and façade joints for homeowners, landlords and businesses in Farncombe. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Joints where the bead has come unstuck
- Rain getting behind render or cladding at a joint
- Plants rooting in failed movement joints
External mastic in Farncombe
We cut out failed sealant, set the joint depth with closed-cell backing rod and reseal with a low-modulus exterior sealant. We pick a colour that sits well with the wall. Common call-outs are for rigid filler in a joint that should flex and failed seals between different materials, on brickwork movement joints, façade panels and concrete & block.
Homes around Farncombe range from older cottages to newer houses, with walls and rooflines of every type. Older gutters and trims need their joints resealed; newer brick and render need their movement joints kept sound.
We stand behind the work with a 12-month guarantee, so you are not left on your own once the job is done.
- Place
- Farncombe (GU7)
- Wider area
- Surrey
- Guarantee
- 12 months on all our work
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
What sealant work can’t fix
Before you book, it’s worth knowing the limits:
- Render that is blown, hollow or coming away
- Walls that need new movement joints cut into them
- Movement that’s more than a sealant joint can take
If you are not sure, just ring 0345 464 0079 or send us an email and we’ll give you a straight answer before booking.
Joints and surfaces we work on
- Brickwork movement joints
- Joints between brick and frames
- Copings & trims
- Render & cladding joints
- Façade panels
- Concrete & block
Leave it or put it right?
Low-modulus sealants stretch easily, so they put less strain on the joint edges. That matters on brick, render and concrete, which can be weaker at the face. A stiffer product can damage the joint edge as it fails. In a smaller place like Farncombe, wherever a wall is exposed, a failed outside joint is a real source of damp. Inside, a split seal lets water into floors and panels just as it would anywhere.
No two jobs are quite the same, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all make a difference, and we will explain the quote if you ask.
Why us?
- White, clear, grey or coloured to suit, where the product allows
- Sanitary silicone with an anti-fungal additive in wet areas
- Arbo and Everbuild products
- A sealant colour to suit the surroundings
Take a look at how sealant jobs are priced and our reviews.
What happens on the day
Every visit runs the same way: we look at the joints together, mask and protect the surrounding surfaces, carry out the job and tidy away. Most jobs take a few hours to a few days, depending on the length of joint and the access. A visit to Farncombe 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 inspect the joints and agree which need resealing and how they’ll be reached.
- Old sealant and any debris are cut and raked out.
- We clean both faces of the joint and prime them where the product calls for it.
- Backing rod goes in next, setting the depth and keeping the sealant off the back of the joint.
- The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.
How to prepare
- Where the joints are inside, avoid wetting them before we arrive
- Mention any tricky access
- Let us know about earlier repairs to the joints
Getting a quote
For external mastic in Farncombe, call 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and you’ll get a clear quote before any work starts.
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FAQs for Farncombe
Is Farncombe in your area for external mastic?
Yes. We work across London and the South East, and Farncombe is part of that. Just phone 0345 464 0079 or email us with a few details of the job, and we’ll send you a clear quote.
Can you help a landlord with a rental near Farncombe station?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. You can ring 0345 464 0079 or send us an email with the details for a clear quote.
Do the sealants smell?
Possibly a little. Any smell clears as the sealant cures, and ventilation helps.
Will the old sealant be removed?
Yes. Sealing over old sealant is the main reason resealing fails early, so we never do it.
Do I have to be there?
That depends on where the joints are. Inside work needs someone to give us access.
Should I point up the gap in my brickwork?
No. A mortar-filled joint cannot move, so the wall cracks somewhere else instead. Use a flexible sealant with backing rod.
Do you use backing rod?
Backing rod goes into deeper joints as a matter of course. It controls the depth and stops the sealant bonding to the back, so the joint can move.
Do you have insurance?
Yes, we’re fully insured.
Nearby places to Farncombe
What else we do in Farncombe
What affects the cost of external mastic
Some jobs are bigger than they look, and some smaller. What affects the quote:
- The number of rooms or windows
- When we can work, for business premises
- How easy the joints are to reach
- The type of sealant required
Doing several joints on one visit is normally more efficient than separate visits. You’ll get one clear quote for the whole job.
Asking for a quote
What to tell us when you ask for a quote:
- Pictures of the joints, sent by email
- Any previous sealing or DIY work
- The type of property
- Where the property is
For a quote, call 0345 464 0079 or email us with the location and a short description of the problem. You’ll have a clear quote before we start.
What external mastic looks like in Farncombe
London and the South East are among 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 1.2 miles north) nearby, there’s older building stock in the area around Farncombe as well as newer homes. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material.
In the older streets around St John the Evangelist Church, old and new materials meet at the roofline and walls, which is where sealant earns its keep. If you look after a building such as Farncombe Church of England Infant School, larger buildings have long runs of movement joint that eventually need resealing. Letting a property close to Farncombe station? Then failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Farncombe is about 4 miles south-west of Guildford, in Surrey. Homes, rented property, offices and hotels in Farncombe is covered for external mastic, old or new, large or small. Every job comes with our 12-month guarantee. Across Surrey, we cover 395 places, and Farncombe is one of them. For nearby work, see our Crawley page, about 19 miles away.
We work across GU7 for external mastic and the streets around it. External mastic is available to properties on Station Road, Old Station Road and Walnut Tree Gardens and the roads around them. Close by, we work in Godalming (1 mile south), Aaron's Hill (1 mile south-west), Busbridge (1 mile south), Upper Eashing (2 miles south-west) and Lower Eashing (2 miles west). Larger places within reach include Guildford (4 miles north-east), Woking (8 miles north), Camberley (11 miles north-west), Farnham (8 miles west), Dorking (12 miles east) and Frimley (10 miles north-west).
Around Farncombe
Locally, jobs take us to homes and businesses close to Broadwater School, Farncombe Wood and The Freeholders pub, among other places. There’s a railway station in Farncombe itself: Farncombe station. Nearby you will also find Charterhouse School Museum (0.6 miles west) and Guildford Castle (2.9 miles north-east). The countryside around Farncombe includes Frith Hill and Farncombe Wood.
Keeping the joints in good condition
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Keep soil, plants and ivy away from the joints
- Keep movement joints as flexible joints, not mortar
- Ask before painting over external sealant
- Avoid pressure-washing directly into sealant 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.
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 the job involves on each surface
Joints between dissimilar materials
Where a frame or panel meets masonry, water often finds a way in. We cut out the old sealant and reseal with a product suited to both surfaces.
Concrete and blockwork
Wide joints in concrete need the depth controlling carefully. We size the backing rod to the gap so the sealant isn’t too deep.
DIY sealant or a professional job?
Sealing over old silicone is the commonest DIY error. New silicone won’t bond to old, so it peels away and traps moisture behind it. Everything old must be removed first.
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly, so tell us about it when you ask for a quote.