Surrey · England
Onslow Village External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for Onslow Village, backed by a one-year guarantee. Call for a quick quote.
- Damp patches traced to an open external joint
- Joints pointed up with cement by mistake
- Weathered mastic that no longer stretches
External mastic in Onslow Village, done properly
On houses, flats and commercial buildings across Onslow Village, we reseal joints in brickwork, render, cladding and façade panels. Every joint gets the same careful preparation: clean joint faces and the right depth. Common call-outs are for hard, crazed mastic that has stopped moving and joints where the bead has come unstuck, across façade panels, joints between brick and frames and render & cladding joints.
In and around Onslow Village, older properties sit alongside newer ones, each with its own outside joints. Older homes need their gutter and trim joints kept tight, newer ones their movement joints.
You get a one-year guarantee, the same in Onslow Village as everywhere else we work.
- Where
- Onslow Village (GU2, GU3)
- Wider area
- Surrey
- Cover
- 12 months on all our work
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
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, then guaranteed for a year.
A DIY attempt doesn’t rule out a professional job. We remove it and do the joint properly, so tell us about it when you ask for a quote.
Walls and rooflines in Onslow Village
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. Historic houses like Guildford Castle (about 1.3 miles east) are a reminder that the area around Onslow Village has older buildings as well as new. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material.
For site and facilities teams at buildings such as Onslow Infant School, larger buildings have long runs of movement joint that eventually need resealing. If you let a flat or house near Guildford station, failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Onslow Village is about 2 miles south-west of Guildford, in Surrey. Our applicators cover external mastic for homeowners, landlords and businesses in Onslow Village, as part of our work across Surrey. Our area takes in 395 places across Surrey. Crawley is on our list too, around 20 miles away.
Here we cover the GU2 and GU3 postcode area for external mastic. Streets in the area include Gill Avenue, Farnham Road and Orchard Road, all of which we cover. With the A31 close by, Onslow Village is easy for our applicators to reach. Neighbouring places we cover for external mastic include Littleton (1 mile south), Wood Street Village (2 miles north-west), Compton (2 miles south-west), Binscombe (2 miles south) and Fairlands (2 miles north). We also work in nearby towns such as Woking (6 miles north), Camberley (9 miles north-west), Farnham (9 miles west), Egham (14 miles north), Walton-on-Thames (13 miles north-east) and Dorking (12 miles east).
What’s near Onslow Village
Typical jobs here are in homes near Guildford County School, Academy of Contemporary Music and Broadstreet, among other places. The closest station to Onslow Village is Guildford station, about 1 mile east. Nearby you’ll also find Guildford Castle (1.3 miles east) and Guildford Cathedral Treasury (0.7 miles north-east). For a walk, there’s Pewley Down and Lower Lake.
Quotes for external mastic in Onslow Village
Jobs vary more than people expect. What affects the quote:
- Whether there’s mould to deal with
- Which sealant suits the joint
- The old material and how stubborn it is
- Working hours on commercial sites
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you are unsure, ring 0345 464 0079 or drop us an email and we’ll give you an honest view and a quote.
Helping us quote
Photos by email are helpful but not essential. Please mention:
- If someone has resealed it before
- Access, such as stairs, a lift or height
- Where the job is, and your postcode
- A few photos by email, if you can
We don’t publish a price list. Instead, we send you a clear quote for your job. To get started, phone 0345 464 0079 or send us an email.
Looking after it afterwards
Once the sealant has cured, a few habits help it last:
- Act on the first splits you see
- Walk round the building once a year and look at the joints
- Make sure movement joints are not pointed over
- Leave the joints unpainted unless we’ve said otherwise
Keep pressure washers away from the sealant. A strong jet can damage the edges of the bead and let water in behind.
A joint that has stopped moving pushes the movement elsewhere, often as cracks near the joint. Resealing it early helps prevent that.
Nearby places to Onslow Village
What else we do in Onslow Village
Your questions about external mastic in Onslow Village
Can you help a landlord with a rental near Guildford station?
Yes, rental work is part of what we do. You can phone 0345 464 0079 or drop us an email with the address and a few details, and we’ll give you a fixed price before we start.
Will you come out to Onslow Village?
Yes, smaller places are covered as well as towns. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Do you do commercial work?
Yes. Hotels, offices and other businesses use us.
How do you reach high-level joints?
It depends on the height and the site. Low-level joints are straightforward; for higher work, tell us about the building and we’ll confirm what’s needed.
Can you seal joints between render and window frames?
Yes. Different materials move at different rates, so a flexible sealant is needed where they meet. We choose one that suits both surfaces.
How long does external mastic take?
Typically it takes a few hours for a handful of joints, longer for a whole elevation. Bigger jobs take longer, and we will say how long yours will take.
Do I have to be there?
If the work is inside, we need someone to let us in. Once we have agreed the job, you don’t need to watch us work.
Is the work guaranteed?
Yes. All our work carries a 12-month guarantee.
How it works
Once we’re on site, we compare the joints with what we discussed. 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. In a smaller place like Onslow Village, parking is seldom the issue; lanes, gates and long drives are worth mentioning. For outside work, side access and the height of the joints help us plan.
- 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.
- Joint faces are cleaned back and primed if the sealant needs it.
- We fit closed-cell backing rod to control the depth.
- We apply the sealant, tool it and check the whole run.
Before we arrive
- For indoor joints, keep the area dry beforehand if you can
- Let us know about earlier repairs to the joints
- On commercial sites, let us know about site rules
Get a quote
Getting a quote is simple: let us know what needs doing and where and its rough size. Photos by email help us understand the job, and we’ll come back to you with a quote.
Related advice
Signs you need external mastic in Onslow Village
UV, rain and frost all age exterior sealant. In time it goes hard, crazes on the surface and stops stretching, so the joint eventually tears or comes away from one side.
Look out for these signs:
- Hard, crazed mastic that has stopped moving
- Moss and dirt in joints with no sealant left
- Rain getting behind render or cladding at a joint
- Leaking joints around cladding and façade panels
Homes close to All Saints' Church include some older properties, and an extension built onto an older house moves differently, and the joint between them takes the strain.
Comparing quotes
- How the joint is cleaned and prepared
- What the quote includes, VAT included or not
- Whether they’re fully insured
- Whether all the old sealant comes out first
What sealant work can’t fix
Before you book, it’s worth knowing the limits:
- Cracking across the wall rather than at a joint
- Movement that is more than a sealant joint can take
- Adding movement joints to masonry that has none
If in doubt, call 0345 464 0079 or drop us an email and we will say what we think before you book.
What we seal
- Brickwork movement joints
- Render & cladding joints
- Concrete & block
- Façade panels
- Copings & trims
- Joints between brick and frames
Why it’s worth doing now in Onslow Village
The longer a joint stays open, the more water the wall takes in. Wet masonry is more easily damaged by frost around the joint, so the problem grows beyond the joint itself. Homes in smaller places like Onslow Village can face more weather, and failed outside joints let damp into walls. 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. Size, access and the product the joint needs all make a difference, and we will explain the quote if you ask.
Why book with us
- A choice of colours where the product allows
- We never seal over old sealant
- You choose the colour before work begins
- We are fully insured
Read our cost guide or our reviews.