Hampshire · England
External Mastic in Wildmoor
Sealing brickwork movement joints, render, cladding and façade joints for householders, landlords and businesses in Wildmoor. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Old sealant gone brittle and cracked
- Joints where the bead has come unstuck
- Cracked joints where brick meets render or frames
External mastic in Wildmoor
Movement joints let brickwork, render and cladding expand and shrink without cracking. Its sealant has to flex with the building, season after season, so once it splits or hardens, the joint stops working and water gets in. Typical jobs include rigid filler in a joint that should flex and old sealant gone brittle and cracked, on façade panels, brickwork movement joints and concrete & block.
External sealant needs dry, clean surfaces, so work around Wildmoor is planned for dry weather. Tell us about access to all sides of the building, including outbuildings and garages.
You get a 12-month guarantee, the same in Wildmoor as everywhere else we work.
- Location
- Wildmoor (RG27)
- Wider area
- Hampshire
- Guarantee
- 12 months on all our work
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
What sealant work cannot fix
We won’t take on work that won’t last, so these are the limits:
- Loose or hollow render, which needs re-rendering
- Cracked brickwork or render that needs a builder or plasterer
- Damp that is not coming from the joint
If you’re not sure, just call 0345 464 0079 or send us an email and we will give you a straight answer before booking.
Where we work in Wildmoor
- Copings & trims
- Brickwork movement joints
- Render & cladding joints
- Façade panels
- Joints between brick and frames
- Concrete & block
Should I try it myself first?
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is.
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
Also near Wildmoor
Other services in Wildmoor
Signs you need external mastic in Wildmoor
A lot of failed joints come down to preparation: joint faces that were dusty or damp, unprimed where they needed it, or still carrying old sealant. The new sealant then lets go long before it should.
Common reasons people contact us include:
- Plants rooting in failed movement joints
- Failed sealant between panels on a façade
- Rain getting behind render or cladding at a joint
- Failed seals between different materials
Homes close to Church of St. Leonard include some older properties, and an extension built onto an older house moves differently, and the joint between them takes the strain.
Comparing quotes
- What the cure time is
- Which colour the sealant will be
- Whether VAT is included
- What insurance they hold
Looking after it afterwards
Simple care keeps the joints in good condition. We recommend:
- Show decorators and builders where the movement joints are
- Keep high-pressure jets off the joints
- Deal with leaking gutters that soak the joints below
- Make sure movement joints are not pointed over
Give the sealant the cure time we tell you before anything rubs against it. The surface skins over quickly, but full cure takes longer.
An open movement joint lets rain into the wall every time it pours. Over time it can mean damp inside, stained render or frost-damaged brick which cost more to put right than the joint.
Wildmoor: your questions answered
Will you come out to Wildmoor?
Yes. Wildmoor is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Can you do external mastic in Wildmoor?
Yes, Wildmoor is within the area we cover. We work across London and the South East. You can phone 0345 464 0079 or send us an email and tell us what needs doing, and we’ll send you a clear quote.
What do you need from me for a quote?
Let us know what needs doing and where, plus pictures if you have them. If we need more, we will ask.
Will the old sealant be removed?
Always. Sealing over the old bead is the commonest cause of early failure, and it’s something we never do.
Can you match the colour of my brickwork?
There’s a good range of exterior colours, including greys, browns, whites and stone tones. We choose the closest to your brick or render.
Can new sealant go over the old?
No, and we never do. It can look neat for a few weeks, but the new bead soon lifts. Removing the old sealant completely is the only lasting way.
Can you seal joints between render and window frames?
Yes. Different materials move at different rates, so the joint between them must be flexible. The sealant is matched to both sides.
How do I get a quote for external mastic in Wildmoor?
Size, access and the old material all affect the cost. Call for a quick quote.
What we do, step by step
You do not need to clear the whole room or building, just the space around the work. We protect the rest, and the work takes a few hours to a few days, depending on the length of joint and the access for a typical job. In a small place like Wildmoor, access is generally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First we look over the joints with you, agree which to renew and talk through access.
- 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.
- Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
Preparing for the visit
- Mention any parking rules near the property
- For indoor joints, keep the area dry beforehand if you can
- Tell us about any water getting in
Getting a quote
Asking for a quote is easy: let us know what needs doing and where and its rough size. A few photos by email make the job easier to understand, and we will take it from there.
Related advice
Wildmoor buildings and the weather
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. With historic houses such as The Vyne (about 3 miles west) nearby, there’s older building stock in the area around Wildmoor as well as newer homes. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material.
For landlords with property near Bramley (Hants) station, failed wall and movement joints let damp in, so they’re worth checking between tenancies. Schools such as The Loddon School are buildings too, and its movement joints, gutters and trims need looking after like any other building’s.
Wildmoor is about 4 miles north-east of Basingstoke, in Hampshire. Whether you are in the middle of Wildmoor or further out, external mastic is available for homes and businesses alike. Across Hampshire, we cover 683 places, and Wildmoor is one of them. Reading is on our list too, around 10 miles away.
Work in RG27 is quoted and booked the same way as anywhere else. Neighbouring places we cover for external mastic include Chineham (1 mile west), Water End (2 miles south), Andwell (2 miles south), Old Basing (2 miles south-west) and Lychpit (2 miles south-west). Further out, we also cover Basingstoke (4 miles south-west), Farnborough (11 miles east), Fleet (8 miles east), Aldershot (12 miles east), Alton (10 miles south) and Yateley (9 miles east).
Landmarks near Wildmoor
For rail, the closest station is Bramley (Hants) station, roughly 2.8 miles north-west. Other landmarks nearby include Festival Place (3.7 miles south-west) and Basing House (2.5 miles south-west). For a walk, there’s The Mill Field.
Why deal with it now?
It often makes sense to reseal all the failing joints on an elevation together. They’ve weathered the same way, and access only has to be arranged once. Around Wildmoor, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you’re not sure whether it needs doing, ring 0345 464 0079 or email us for an honest opinion and a quote.
Why Wildmoor clients choose us
- Rated 4.9 stars on Google
- 20+ years of sealant experience
- ARBOMaster approved applicator
- Sanitary silicone with an anti-fungal additive in wet areas
Read our cost guide and customer reviews.
Quotes for external mastic in Wildmoor
We quote each job individually. These are the things that affect it:
- The number of rooms or windows
- The old material and how stubborn it is
- The size of the job
- The product the joint needs
The cost reflects the work involved, not guesswork. That’s why we ask a few questions first.
What to tell us for a quote
To make quoting easier, please include:
- What the problem is, such as mould, gaps, leaks or cracking
- How many joints, rooms or windows are involved
- Any previous sealing or DIY work
- A few photos by email, if you can
If you’re in Wildmoor and need external mastic, phone 0345 464 0079 or email us. A short description of the job and where it is helps us quote, and we will agree the price before any work begins.