Surrey · England

Woking External Mastic

External mastic for Woking, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.

  • Weeds or debris growing in open joints
  • Rain getting behind render or cladding at a joint
  • Joints with sealant missing in places

External mastic in Woking

Quotes for external mastic in Woking

Every job gets its own quote. This is what makes a difference:

  • Any working-time requirements on site
  • The product the joint needs
  • The old material and how stubborn it is
  • The size of the job

Instead of a standard rate, we price the job in front of us: how many joints, what’s in them now and how we reach them. You’ll know the price before we begin.

What we need to know

You do not need to know the technical terms. Just tell us:

  • The type of property
  • The problem you’ve noticed
  • The rough size of the job
  • Access, such as stairs, a lift or height

We don’t publish a price list, because every job is different. Instead, we send you a clear quote for your job. To arrange one, call 0345 464 0079 or drop us an email.

External mastic for homes and businesses in Woking

We cut out failed sealant, set the joint depth with closed-cell backing rod and reseal with a low-modulus exterior sealant. The colour is chosen to suit the brick or render so the joint does not stand out. We work on render & cladding joints, brickwork movement joints and concrete & block, and people most often call us about failed sealant between panels on a façade and weeds or debris growing in open joints.

Larger buildings in Woking have plenty of movement joints, cladding joints and roofline trims. When those fail, water gets behind the face of the building, often unseen until it shows inside.

All of our work is guaranteed for twelve months.

Applicator reaching up to seal an external door frame on a sunny day
Place
Woking (GU21, GU22, GU24, GU3)
Wider area
Surrey
Guarantee
A year, on every job
Quotes
A clear quote up front
Telephone
0345 464 0079
Last updated
26 October 2026

When it is not the sealant

We’d rather tell you now than do work that won’t last, so these are the limits:

  • Render that is blown, hollow or coming away
  • Structural movement, which needs a surveyor or engineer
  • Damp from another source, such as a leaking gutter or a bridged damp-proof course

Not sure which it is? You can call 0345 464 0079 or send us an email and we’ll tell you honestly before you book.

What we seal

  • Brickwork movement joints
  • Copings & trims
  • Render & cladding joints
  • Joints between brick and frames
  • Concrete & block
  • Façade panels

How the job changes by surface

Joints between dissimilar materials

Joints where frames, sills or panels meet the wall are common leak points. We cut out the old sealant and reseal with a product suited to both surfaces.

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.

Landlord and commercial work in Woking

A neglected joint can let water reach the structure, which matters even more when someone else lives there. Resealing at the right time is simple maintenance that we can handle for you.

We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.

Why it’s worth doing now in Woking

Pointing a movement joint with mortar might seem a neat fix, but it locks the joint solid. The movement then cracks the brickwork or render nearby. A flexible sealant over backing rod is what the joint needs. In flats, shops and offices in Woking, a failed joint can let water into the unit below or behind a wall, where it’s often found late and is bigger to put right.

Homes and businesses are quoted the same way: the amount of work, the access and the products needed. Ask us for a quote and we’ll go through it with you.

Why book with us

  • An ARBOMaster approved applicator
  • Anti-fungal sanitary silicone in wet areas
  • We agree the colour with you first
  • Experience in homes, commercial sites and hotels

Take a look at what affects the cost or what customers say.

Keeping the joints in good condition

Looking after new joints is easy:

  • Check the sealant is paintable before painting near it
  • Never let anyone fill a movement joint with mortar
  • Avoid pressure-washing directly into sealant joints
  • Keep water from gutters off the wall

Make sure anyone working on the wall later knows where the movement joints are. They should be kept open and resealed, not filled.

Leaks behind façade panels and render often go unseen. By the time there’s a damp patch, the damage can be well established so early resealing is worth it.

Walls and rooflines in Woking

With historic houses such as Botleys Mansion (about 4.3 miles north-east) nearby, there’s older building stock in the area around Woking 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, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.

For landlords with property near Woking station, failed wall and movement joints let damp in, so they’re worth checking between tenancies. Homes close to Church of St Mary of Bethany include some older properties, and an extension built onto an older house moves differently, and the joint between them takes the strain. Schools such as Goldsworth Primary School are buildings too, and movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.

Woking is about 24 miles south-west of London, in Surrey. From the centre of Woking to the outskirts, we cover external mastic for every kind of property, from flats and houses to offices and hotels. Our Surrey coverage runs to 395 places, and Woking is one of them. Reading is on our list too, around 20 miles away.

Jobs for external mastic in GU21, GU22, GU24 and GU3 is quoted and booked the same way as anywhere else. You will find streets such as High Street, Market Walk and Gloucester Square. Woking sits on or near the A247 and A320, so getting to you is simple. Neighbouring places we cover for external mastic include Goldsworth Park (1 mile west), St John's (1 mile west), Horsell (1 mile north-east), Westfield (1 mile south-east) and Mimbridge (2 miles north). We also work in nearby towns such as Guildford (5 miles south), Camberley (7 miles west), Epsom (13 miles east), Farnham (12 miles south-west), Ewell (14 miles east) and Egham (8 miles north). As one of the bigger places in Surrey, Woking has every kind of property, from flats to offices.

What’s near Woking

Around Woking, our work takes us to homes and buildings near The Red Lion pub, Woking High School and Hoe Valley Linear Park, among other places. The closest station to Woking is Woking station, roughly 0.7 miles east. Well-known places in the area include The Peacocks (0.6 miles east) and The Hockey Museum (0.7 miles east). Green spaces nearby include Brookwood Lye.

Map of Woking © OpenStreetMap contributors

How it works

Once we’re on site, we compare the joints with what we discussed. If we find something unexpected, we talk it through with you first. After that, the work takes anything from a few hours to several days, depending on the building. For homes and businesses in busier parts of Woking, parking needs a little planning. For flats, mention stairs, lifts and shared entrances as well.

  1. We inspect the joints and agree which need resealing and how they’ll be reached.
  2. We cut out the failed sealant and rake out any dirt or growth.
  3. Both sides are cleaned back to sound material and primed if needed.
  4. Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
  5. The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.

How to prepare

  • Let us know about earlier repairs to the joints
  • Keep children and pets away from the work area
  • Mention any parking rules near the property

Getting a quote

A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and email pictures if that is easy.

Get a price

Read more

Common questions in Woking

Is there a guarantee on external mastic in Woking?

All our work, in Woking and everywhere else, comes with a 12-month guarantee. We are fully insured, and an ARBOMaster approved applicator.

I let a flat near Woking station. Can you help?

Yes, rental work is part of what we do. You can call 0345 464 0079 or email us with the address and a few details, and we’ll give you a fixed price before work begins.

How do you reach high-level joints?

It depends on the building. Send us photos and a rough idea of the height and we will confirm how they can be reached safely.

What does external mastic cost?

The cost depends on the size of the job, access and how much old sealant has to come out. Call for a quick quote.

Why do you put foam in the joint first?

Backing rod controls the sealant depth and keeps it off the back of the joint. Then the sealant bonds to two faces and can move.

Do I have to be there?

Access is agreed with you when the job is booked. For inside work, that normally means someone being in.

Is it messy?

We keep the work tidy. We protect what’s around the joints, and we clear up when we are done.

Do you work for hotels and businesses?

Yes. We can plan bigger jobs in stages to suit the site.

20+ yearsMastic and sealant specialists
ARBOMaster approvedApproved applicator for Arbo sealants
Fully insuredDomestic, commercial and hotels
One-year guaranteeOn every job