Surrey · England
External & façade joints in Hammer, Surrey
Sealing brickwork movement joints, render, cladding and façade joints in Hammer, with a one-year guarantee on every job. Call for a quick quote.
- Joints with sealant missing in places
- Damp patches traced to an open external joint
- Joints pointed up with cement by mistake
Outside joints around Hammer
London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
If you let a flat or house near Haslemere station, outside joints that have cracked can let damp into a rental, so check them between lets. In the older streets around St. Stephen's Church, the joints between older walls, newer extensions and the roofline need a sealant that can move.
Hammer is about 9 miles south of Farnham, in Surrey. Anywhere in GU27, we cover external mastic for homes and businesses. Hammer is one of 395 towns and villages in Surrey we cover for external mastic. For nearby work, see our Portsmouth page (24 miles or so).
We cover every part of GU27 for external mastic. If you need external mastic at a property on Hammer Lane, Moor Road and Copse Road or a nearby road, we can help. We also cover the places around Hammer: Woolmer Hill (1 mile south), Hammer Bottom (1 mile west), Shottermill (1 mile east), Bramshott Chase (1 mile north) and Linchmere (1 mile south-west). Larger places within reach include Guildford (14 miles north-east), Farnham (9 miles north), Cranleigh (12 miles east), Ash (11 miles north), Godalming (9 miles north-east) and Farncombe (10 miles north-east).
What’s near Hammer
Locally, jobs take us to homes and businesses close to The Prince of Wales pub and Camelsdale Primary School and the streets around them. Hammer’s nearest station is Haslemere station, about 1.5 miles east. Nearby you’ll also find Haslemere and District Hospital (2 miles east). For a walk, there’s Lynchmere Commons and Wheeler's Down.
About our external mastic in Hammer
Ground-floor and low-level joints are straightforward to reach. Where joints are higher up, tell us about the building when you get in touch and we’ll confirm what access is needed. We work on concrete & block, joints between brick and frames and copings & trims, and common reasons people get in touch are joints with sealant missing in places and water getting into walls through failed joints.
Older homes in small places like Hammer may be stone, brick or timber-framed, often with later extensions. The joints where those materials meet are the weak points, and they need the right sealant at the right depth.
All of our work is guaranteed for twelve months.
- Where
- Hammer (GU27)
- Wider area
- Surrey
- Guarantee
- A year, on every job
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Nearby places to Hammer
More services for Hammer
How the visit works
Every visit runs the same way: we look at the joints together, mask and protect the surrounding surfaces, do the work and tidy away. It normally takes a few hours for a handful of joints, longer for a whole elevation. For a village or hamlet like Hammer, the journey is planned in advance: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- First, the joints are inspected and the access agreed.
- 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.
- We fit closed-cell backing rod to control the depth.
- The exterior sealant is applied, tooled and checked along its length.
Before we arrive
- Mention any tricky access
- Let us know if you’ve seen damp or leaks
- Let us know about parking restrictions
Get a quote
There’s no standard price list. Instead, your job gets its own clear quote. To get started, ring 0345 464 0079 or drop us an email.
Read more
When to call us in Hammer
Weeds, moss and debris in a joint are a sign the sealant has gone. Dirt and roots then trap moisture in the joint and make things worse.
People generally contact us when they notice one of these:
- Rigid filler in a joint that should flex
- Water getting into walls through failed joints
- Weathered mastic that no longer stretches
- Failed sealant between panels on a façade
Managing a site like Woolmer Hill School? Then larger buildings have long runs of movement joint that eventually need resealing.
What to look for in a quote
- What guarantee comes with the work
- What happens if they find a problem under the old sealant
- What insurance they hold
- What product goes in the joint
Leave it or put it right?
A low-modulus sealant is chosen because it moves without pulling hard at the edges. That matters on brick, render and concrete, which can be weaker at the face. Too stiff a sealant can pull at the edges and break them. Around Hammer, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
Combining jobs into one visit is normally more efficient than separate visits, so it’s worth mentioning everything you’d like done. You’ll get one clear quote for the whole job.
Why us?
- Every job guaranteed for a year
- Any old sealant cut out fully, not covered over
- A sealant colour to suit the surroundings
- Tidy, careful work
Take a look at what affects the cost and what customers say.
Quotes for external mastic in Hammer
Every job gets its own quote. This is what makes a difference:
- The amount of work
- Which sealant suits the joint
- How many rooms, windows or areas are involved
- Mould in or behind the old joints
There are no prices on our website, because the cost depends so much on the job itself. For a quick quote, please phone 0345 464 0079 or drop us an email and we will talk you through it.
What we need to know
Before you ask for a quote, have a think about:
- Access, such as stairs, a lift or height
- The type of property
- Roughly how big the job is
- Photos by email, if that’s easy
For external mastic in Hammer, ring 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and we’ll agree the price before any work begins.
Looking after it afterwards
A little care helps the new joints last. We recommend:
- Keep high-pressure jets off the joints
- Leave the joints unpainted unless we have said otherwise
- Point out the joints to other trades
- Act on the first splits you see
Don’t paint over the new sealant unless we have said the product is paintable. Many exterior sealants aren’t designed to be painted.
Water getting behind cladding or render can go unnoticed for a long time. When it finally shows inside, the joint may have been open for years, so it’s worth resealing at the first signs.
Hammer: your questions answered
I let a flat near Haslemere station. Can you help?
Yes, we work for landlords and agents. Just ring 0345 464 0079 or send us an email and tell us about the property, and we’ll give you a clear quote.
Is Hammer within the area you cover?
Yes. Hammer is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Is it OK to fill a movement joint with cement?
No. Rigid materials can’t move with the wall. Where a joint has been mortared, it can often be raked out and sealed properly.
Can you match the colour of my brickwork?
We aim for a joint that suits the wall rather than one that jumps out. Colour is agreed with you before we begin from the range available.
Do you guarantee your work?
Yes. All our work carries a 12-month guarantee.
Do you do commercial work?
Yes. We can plan bigger jobs in stages.
Will it make a mess?
Very little: the area around the joints is protected first, and we tidy up before we go.
Are you ARBOMaster approved?
Yes. Mr Mastic is an ARBOMaster approved applicator and we are fully insured too.
What we cannot put right
Sealant is not the answer to every problem, and we will tell you before any work starts. It won’t solve:
- Render that is blown, hollow or coming away
- Adding movement joints to masonry that has none
- Structural movement, which needs a surveyor or engineer
If in doubt, phone 0345 464 0079 or send us an email and we will say what we think.
Joints and surfaces we work on
- Render & cladding joints
- Concrete & block
- Façade panels
- Copings & trims
- Joints between brick and frames
- Brickwork movement joints
How the job changes by surface
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.
Brickwork movement joints
Brick walls have vertical movement joints to absorb expansion. They’re resealed over backing rod with a low-modulus sealant in a colour to suit the brick.