Hampshire · England
North Camp External Mastic
Sealing brickwork movement joints, render, cladding and façade joints in North Camp, with a one-year guarantee on every job. Call for a quick quote.
- Weeds or debris growing in open joints
- Rain getting behind render or cladding at a joint
- Hard, crazed mastic that has stopped moving
External mastic in North Camp, done properly
Joints between dissimilar materials, like brick against render or concrete against a steel frame, see movement from both sides. A flexible sealant bridges the two where a rigid filler would soon crack. We work on render & cladding joints, brickwork movement joints and concrete & block, and people most often call us about failed seals between different materials and water getting into walls through failed joints.
In a smaller place like North Camp, some homes face open ground, so exposed walls and rooflines take more wind-driven rain. That is where gutter joints and wall joints tend to fail first.
You’re covered for a year from the day we finish. If there’s a problem with it, please phone 0345 464 0079 or drop us an email.
- Place
- North Camp (GU14, GU11)
- Region
- Hampshire
- Cover
- 12 months on all our work
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
What we do, step by step
When we get to you, we compare the joints with what we discussed. If anything is different, we explain it before carrying on. Most jobs then take a few hours to a few days, depending on the length of joint and the access. For a job in North Camp, we agree the time, the access and parking before the day. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- 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.
- Backing rod sized to the joint goes in to set the depth.
- The exterior sealant is applied, tooled and checked along its length.
How to prepare
- Mention any sign-in or site rules at work premises
- Tell us about any previous sealing or DIY attempts
- Plan for the work area to be out of bounds to pets and children
Ask for 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 add photos by email if you can.
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What affects the cost of external mastic
Every job gets its own quote. These are the things that affect it:
- Working hours on commercial sites
- How many areas need sealing
- The size of the job
- Which sealant suits the joint
A failed joint rarely gets cheaper to fix by waiting. If you’re unsure, call 0345 464 0079 or drop us an email for an honest opinion and a quote.
What to tell us for a quote
To help us quote quickly, please include:
- Any previous sealing or DIY work
- Where the job is, and your postcode
- Photos by email, if that’s easy
- What the problem is, such as mould, gaps, leaks or cracking
To get a quote, ring 0345 464 0079 or email us with the location and a short description of the problem. We will give you a clear price before any work starts.
External mastic in North Camp: local notes
Historic houses like Farnham Castle (about 4.8 miles south-west) are a reminder that the area around North Camp 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. The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
For landlords with property near North Camp station, outside joints that have cracked can let damp into a rental, so check them between lets. In the older streets around St Mark, an extension built onto an older house moves differently, and the joint between them takes the strain. Schools such as St Mark's Church of England Aided Primary School are buildings too, and its movement joints, gutters and trims need looking after like any other building’s.
North Camp is about 1 mile south-east of Farnborough, in Hampshire. From the centre of North Camp to the outskirts, we cover external mastic for every kind of property. We cover 683 towns and villages across Hampshire. Our Reading page covers work nearby, about 15 miles away.
All of GU14 and GU11 is covered for external mastic. That includes homes and businesses on Rae Road, Etps Road and Camp Road. North Camp is on the A3011, so it’s easy for us to get to. Other places close to North Camp include Mytchett (1 mile north-east), Farnborough (1 mile north-west), Ash Vale (1 mile south-east), Southwood (2 miles west) and Cove (2 miles north-west). Larger places within reach include Basingstoke (15 miles west), Fleet (4 miles west), Alton (13 miles south-west), Yateley (5 miles north-west), Bordon (12 miles south-west) and Hook (9 miles west).
Around North Camp
In North Camp, that means homes and buildings near Ramillies Park, National Aerospace Library and The Tumble Down Dick Pub, among other places. For rail, the closest station is North Camp station, roughly 0.9 miles east. A little further out are Royal Army Dental Corps Historical Museum (0.7 miles south) and Frimley Park Hospital (2.7 miles north). Not far away are Danger Hill and Rowhill Nature Reserve.
Keeping the joints in good condition
Good habits help new joints last longer. A few tips:
- Look over the joints every year, ideally after winter
- Never let anyone fill a movement joint with mortar
- Leave the joints unpainted unless we have said otherwise
- Wash walls gently around the sealant
Avoid pressure-washing straight into the joints. High-pressure water can lift the edges.
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 early resealing is worth it.
Also in North Camp
Common questions in North Camp
I let a flat near North Camp station. Can you help?
Yes, we work for landlords and agents. Just phone 0345 464 0079 or send us an email and tell us about the property, and we will give you a clear quote.
Do you cover smaller places like North Camp?
Yes. North Camp 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.
What’s an expansion joint in brickwork?
A vertical gap in a long brick wall is generally a movement joint. It gives the wall room to move.
Is it OK to fill a movement joint with cement?
No, not if it’s a movement joint. Pointing it stops it working, and the wall may crack nearby. A flexible sealant is the right fill.
Do you seal joints where cladding meets other materials?
Yes. The old joint is removed, both surfaces cleaned and primed where needed, and a flexible sealant applied. The colour is chosen to suit.
Will the old sealant be removed?
Yes. We cut out all the old sealant and clean the joint before applying anything new.
Is there a guarantee?
Yes. Every job comes with our 12-month guarantee.
Where is Mr Mastic based?
Our base is in Crawley, and we cover South East England, London and all of Scotland.
Landlords, agents and businesses in North Camp
In hotels, rooms out of use cost money, so the work can be planned room by room. We’ve worked in hotels as well as homes and businesses.
We regularly work with letting and managing agents. Tell us the address, the job and how access works.
DIY versus a professional finish
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
If you are set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
What sealant work cannot fix
A few problems are outside what sealant work can do:
- Movement that’s more than a sealant joint can take
- Rising or penetrating damp from elsewhere in the wall
- Loose or hollow render, which needs re-rendering
If you’re not sure, just phone 0345 464 0079 or email us and we will give you a straight answer.
What we seal
- Render & cladding joints
- Concrete & block
- Copings & trims
- Brickwork movement joints
- Joints between brick and frames
- Façade panels
How the job changes by surface
Cladding and façade panels
Panel systems often rely on sealant between and around the panels. Each joint gets a sealant that suits the panel and its movement.
Concrete and blockwork
The face of concrete or block is often dusty, so cleaning and priming matter. A primer goes on where the product requires one before the bead.