Surrey · England
Fernhurst External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for Fernhurst, backed by a one-year guarantee. Ask us for a quote.
- Joints with sealant missing in places
- Hard, crazed mastic that has stopped moving
- Failed seals between different materials
About our external mastic in Fernhurst
Joints between dissimilar materials, like brick against render or concrete against a steel frame, see movement from both sides. A flexible exterior sealant takes up that movement. If you have failed seals between different materials and joints pointed up with cement by mistake, we can put it right, whatever the surface.
In a village or hamlet like Fernhurst, older cottages and farm buildings often stand in the open, so walls and rooflines take the full force of wind and rain. Joints on those walls need a sealant that moves with the building and stays in place.
All our work is covered by our one-year guarantee.
- Location
- Fernhurst (GU27)
- Region
- Surrey
- Guarantee
- 12 months on all our work
- Price
- A clear price before we start
- Call
- 0345 464 0079
- Updated
- 26 October 2026
What affects the cost of external mastic
The quote reflects the job in front of us. We take into account:
- Working hours on commercial sites
- How many rooms, windows or areas are involved
- Which sealant suits the joint
- Any mould that needs treating
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed, along with when we can work on site. Ask us for a quote and we will go through it with you.
What to tell us for a quote
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- What the problem is, such as mould, gaps, leaks or cracking
- How we’d reach the joints
- Where the property is
- The type of property
Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we will talk you through the work.
Work for landlords, hotels and businesses
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
We work for landlords and agents as well as householders. Resealing between tenancies keeps a property looking cared for before the next move-in.
How the job changes by surface
Concrete and blockwork
Wide joints in concrete need the depth controlling carefully. We size the backing rod to the gap and keep the sealant to the right depth.
Copings and trims
Coping and trim joints face rain and sun head on. Each is resealed with a weatherproof, flexible sealant.
What external mastic looks like in Fernhurst
London and the South East are among the drier parts 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 Cowdray House (about 4.3 miles south) nearby, there’s older building stock in the area around Fernhurst as well as newer homes. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material.
If you let a flat or house near Haslemere station, split movement joints are easy to miss on a rental until damp shows inside. If you look after a building such as Fernhurst Primary School, its movement joints, gutters and trims need looking after like any other building’s. In the older streets around The Parish Church of St Margaret, old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Fernhurst is about 10 miles east of Petersfield, in Surrey. We provide external mastic to homeowners, landlords and businesses in Fernhurst and nearby, as part of our work across Surrey. Fernhurst is one of 395 towns and villages in Surrey where we work for external mastic. There’s also a page for Portsmouth, roughly 23 miles from Fernhurst.
Jobs for external mastic in GU27 is quoted and booked the same way as anywhere else. Local streets include Church Road, Merle Way and Bishops Close, all of which we cover. Other places close to Fernhurst include Kingsley Green (1 mile north), Woolmer Hill (2 miles north-west), Linchmere (2 miles north-west), Redford (3 miles south-west) and Haslemere (3 miles north). Further out, we also cover Guildford (15 miles north-east), Farnham (11 miles north), Cranleigh (12 miles north-east), Ash (14 miles north), Godalming (10 miles north-east) and Farncombe (11 miles north-east).
Local landmarks in Fernhurst
For rail, the closest station is Haslemere station, about 2.7 miles north of the centre. Other landmarks nearby include Haslemere and District Hospital (2.9 miles north). Green spaces nearby include Blackdown and Cooksbridge Meadow.
What we do, step by step
There is not much for you to do on the day. Show us the job and we will take it from there. The work itself takes a few hours to a few days, depending on the length of joint and the access. Somewhere as small as Fernhurst, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First, the joints are inspected and the access agreed.
- Every bit of old sealant and any mortar or debris is cut out.
- Joint faces are cleaned back and primed if the sealant needs it.
- We fit closed-cell backing rod to control the depth.
- The exterior sealant is applied, tooled and checked along its length.
Preparing for the visit
- Clear items away from the joints we are working on
- Where the joints are inside, avoid wetting them before we arrive
- Let us know if you’ve seen damp or leaks
How to get a quote
We do not publish a price list. Instead, your job gets its own clear quote. To get started, phone 0345 464 0079 or drop us an email.
Related advice
FAQs for Fernhurst
Do you cover smaller places like Fernhurst?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Do you cover Fernhurst for external mastic?
Yes, Fernhurst is within the area we cover. Our work covers London and the South East. Just call 0345 464 0079 or drop us an email with a few details of the job.
When will the joints need doing again?
It depends on the exposure, the movement and the product. Sealant is a maintenance item, so check the joints once a year.
Can you reach joints on upper floors?
It depends on the building. Where joints can be reached safely, we will do them. Tell us about the building and we’ll confirm what access is needed.
Do I have to be there?
It depends on the job. Inside work needs someone to give us access.
Do the sealants smell?
That depends on the sealant. Some smell for a while, some hardly at all.
Are you fully insured?
Yes. We’re fully insured, and we can confirm the details when we quote.
Where do you work from?
Our base is Crawley, with over 20 years’ experience. Our area covers South East England, London and Scotland.
Should I try it myself first?
A DIY attempt doesn’t rule out a professional job. We cut it out and start again, so just mention it when you contact us.
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
Places near Fernhurst
More services for Fernhurst
Why act early in Fernhurst
Pointing a movement joint with mortar might seem a neat fix, but it locks the joint solid. The wall then cracks somewhere else. A flexible sealant over backing rod is what the joint needs. In a small place like Fernhurst, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
Leaving a failed joint normally makes the job bigger, not smaller, because water and mould keep working on it. If you’re unsure, ring 0345 464 0079 or drop us an email for an honest opinion and a quote.
Why us?
- An ARBOMaster approved applicator
- Over 20 years’ experience
- Colour picked to suit the job
- Any old sealant cut out fully, not covered over
Take a look at what affects the cost or our reviews.
What sealant work cannot fix
Honest advice matters more to us than a booking, so here’s what new sealant won’t do:
- Structural movement, which needs a surveyor or engineer
- Failed render or damaged cladding panels
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
Not sure which it is? You can phone 0345 464 0079 or email us and we’ll tell you honestly.
Where we work in Fernhurst
- Render & cladding joints
- Concrete & block
- Copings & trims
- Brickwork movement joints
- Façade panels
- Joints between brick and frames