Hampshire · England
External Mastic in Forest Corner
External mastic for Forest Corner and the surrounding area: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Joints pointed up with cement by mistake
- Leaking joints around cladding and façade panels
- Weathered mastic that no longer stretches
Different surfaces, different methods
Cladding and façade panels
Panels heat up and cool down quickly, so the joint sealant has to cope with frequent movement. The sealant is chosen with that in mind.
Joints between dissimilar materials
Wherever two materials meet, they move differently. We seal the joint with a flexible exterior sealant so the movement is taken up.
About our external mastic in Forest Corner
We cut out failed sealant, set the joint depth with closed-cell backing rod and reseal with a low-modulus exterior sealant. We pick a colour that sits well with the wall so the line blends in. We work on copings & trims, joints between brick and frames and render & cladding joints, and common reasons people get in touch are failed sealant between panels on a façade and failed seals between different materials.
Around Forest Corner, older buildings can be stone, brick or timber-framed, many with extensions added later. Where one material meets another is where water normally gets in.
Every job comes with a one-year guarantee.
- Location
- Forest Corner (BH24)
- Wider area
- Hampshire
- Cover
- 12 months on all our work
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
What affects the cost of external mastic
We quote each job individually. These are the things that affect it:
- How much old sealant there is and how hard it is to remove
- The number of rooms or windows
- Working hours on commercial sites
- Which sealant suits the joint
Combining jobs into one visit usually makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. You will get one clear quote for the whole job.
What to tell us for a quote
To help us quote quickly, let us know:
- What the problem is, such as mould, gaps, leaks or cracking
- The rough size of the job
- A few pictures by email, if you can
- Access, such as stairs, a lift or height
For external mastic in Forest Corner, ring 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and you will get a clear quote before any work starts.
More services for Forest Corner
Signs you need external mastic in Forest Corner
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.
The most common problems we see are:
- Old sealant gone brittle and cracked
- Movement joints with cracked, split or missing sealant
- Damp patches traced to an open external joint
- Joints pointed up with cement by mistake
Managing a site like Poulner Infant School? Then movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Before booking anyone
- What preparation is included
- Whether you can choose the colour
- How long the guarantee is
- Is VAT in the price?
What we cannot put right
To be straight with you, there are a few things sealant won’t fix:
- Render that is blown, hollow or coming away
- Cutting new joints into brickwork, which is building work rather than sealant work
- 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 before booking.
Where we work in Forest Corner
- Joints between brick and frames
- Copings & trims
- Façade panels
- Brickwork movement joints
- Render & cladding joints
- Concrete & block
Forest Corner questions
Is Forest Corner within the area you cover?
Yes. Forest Corner 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.
Do you cover Forest Corner for external mastic?
Yes, Forest Corner is within the area we cover. Our work covers London and the South East. You can ring 0345 464 0079 or send us an email and tell us what needs doing, and we’ll send you a clear quote.
Can you do several jobs on one visit?
Of course. Doing several areas at once is generally more efficient, so mention them when you ask for a quote.
What do you need from me for a quote?
Only a few details: where it is, what you’ve noticed and how we reach it. Then ring 0345 464 0079 or send us an email.
Do you take out the old sealant first?
Yes. Sealing over the old bead is the commonest cause of early failure, so we never do it.
How much does external mastic cost in Forest Corner?
The cost depends on the size of the job, access and how much old sealant has to come out. Call for a quick quote.
Do I have to be there?
We need access to the joints, so we’ll agree that with you when we book. Indoors, that generally means someone at home.
When is the sealant fully cured?
That depends on the sealant used, so please follow the time we give you.
Can I do it myself?
Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
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.
What happens if it’s left?
Resealing a run of joints in one go is usually better than patching one at a time. Joints of the same age tend to fail together. In a small place like Forest Corner, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
Homes and businesses are quoted the same way: how much there is to do, how we reach it and what it needs. Call for a quick quote and we’ll explain what it covers.
Why book with us
- You choose the colour before work begins
- One-year guarantee on every job
- More than 20 years in sealant work
- Rated 4.9 stars on Google
Take a look at how sealant jobs are priced and customer reviews.
Outside joints around Forest Corner
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. With historic houses such as Avon Tyrrell House (about 3.6 miles south) nearby, there’s older building stock in the area around Forest Corner as well as newer homes. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth.
In the older streets around St John the Baptist, an extension built onto an older house moves differently, and the joint between them takes the strain.
Forest Corner is about 1 mile east of Ringwood, in Hampshire. Every kind of property in Forest Corner can book us for external mastic, old or new, large or small. The work is guaranteed for a year. Our area takes in 683 places across Hampshire, large and small. We also work in Southampton, about 16 miles from Forest Corner.
Postcode districts we cover here for external mastic: BH24. External mastic is available to properties on Burcombe Lane, St Aubyns Lane and Picket Hill. Other places close to Forest Corner include Foulford (1 mile south-east), Shobley (1 mile north-east), Hangersley (1 mile north-west), Poulner (1 mile west) and Hightown (1 mile south-west). Larger places within reach include Totton (12 miles north-east), Lymington (11 miles south-east), Romsey (15 miles north-east), Hythe (15 miles east), New Milton (8 miles south-east) and Barton on Sea (9 miles south-east).
Around Forest Corner
Locally, jobs take us to homes and businesses close to The London Tavern and Ringwood School Academy and the streets around them. A little further out are St Leonard's Hospital (5.3 miles south-west). Open spaces near Forest Corner include Blashford Lakes and Linbrook Lake.
The process
At the end, we look at the finished work together and explain the cure time. The work normally takes anything from a few hours to several days, depending on the building, depending on the size of the job. For a village or hamlet like Forest Corner, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- We start by checking each joint, agreeing the ones to redo and how we’ll reach them.
- The old mastic and anything lodged in the joint is removed.
- Both sides are cleaned back to sound material and primed if needed.
- Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
- The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.
How to prepare
- Tell us about access, such as stairs, a lift or high-level joints
- Mention any parking rules near the property
- Let us know about earlier repairs to the joints
How to get a quote
Call for a quick quote, or email us if that is easier. Tell us about the joints that need doing and we will talk you through the work.