Hampshire · England
External & façade joints in Farringdon, Hampshire
Sealing brickwork movement joints, render, cladding and façade joints in Farringdon, with a one-year guarantee on every job. Ask us for a quote.
- Failed seals between different materials
- Sealant that has lost its bond to the brick or render
- Rigid filler in a joint that should flex
Common problems we fix in Farringdon
UV, rain and frost all age exterior sealant. In time it goes hard, crazes on the surface and stops stretching, so the next time the wall moves, it splits or pulls away.
These are the problems we are asked about most:
- Weeds or debris growing in open joints
- Joints with sealant missing in places
- Panel joints letting water in
- Rain getting behind render or cladding at a joint
Homes close to Church of All Saints include some older properties, and an extension built onto an older house moves differently, and the joint between them takes the strain.
What to look for in a quote
- What product goes in the joint
- The length of the guarantee
- Whether VAT is included
- When the joint can take water or movement
External mastic for homes and businesses in Farringdon
Getting the depth right is half the job. Closed-cell backing rod sets the depth and stops the sealant sticking to the back, leaving it bonded to two faces so it can move with the wall. We work on façade panels, render & cladding joints and brickwork movement joints, and the jobs we see most are movement joints filled with mortar instead of sealant and brick movement joints where the sealant has split.
In a village or hamlet like Farringdon, older cottages and farm buildings often stand in the open, where walls and rooflines take the weather head on. Joints on those walls need a sealant that moves with the building and stays in place.
You get a 12-month guarantee, the same in Farringdon as everywhere else we work.
- Where
- Farringdon (GU34)
- Wider area
- Hampshire
- Guarantee
- A year, on every job
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
What affects the quote in Farringdon
The price is agreed before any work begins. It’s based on:
- Any working-time requirements on site
- Access and height
- Mould in or behind the old joints
- The number and length of the joints
Rather than a set price list, we price the job in front of us: the amount of work, the old material and the access. The price is agreed before we begin.
What to tell us for a quote
When you call or email, it’s useful to know:
- The rough size of the job
- If it’s domestic, commercial or a hotel
- A few photos by email, if you can
- The problem you’ve noticed
Need a quote? Please phone 0345 464 0079 or drop us an email with a few details. We will explain what we’d do and give you a clear price before any work starts.
When it isn’t the sealant
To be straight with you, there are a few things sealant won’t fix:
- Movement that is more than a sealant joint can take
- Walls that need new movement joints cut into them
- Cracks in the bricks or render themselves, away from the joints
If you’re not sure, just phone 0345 464 0079 or send us an email and we will give you a straight answer.
Surfaces we seal
- Joints between brick and frames
- Brickwork movement joints
- Render & cladding joints
- Copings & trims
- Concrete & block
- Façade panels
Landlord and commercial work in Farringdon
Housing providers, facilities teams and property managers book us too. Several sites can go on one quote, and we are fully insured for the work.
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
Farringdon: your questions answered
Can you do external mastic in Farringdon?
Yes. We work across London and the South East, and Farringdon is part of that. You can ring 0345 464 0079 or email us and let us know what needs doing, and we will send you a clear quote.
Is Farringdon within the area you cover?
Yes. Farringdon 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.
What do you put in the joint?
It depends on the joint: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. Brands we use include Arbo and Everbuild.
Do you take out the old sealant first?
Always. Sealing over the old bead is the commonest cause of early failure, so we never do it.
I’m a tenant. Can you help?
We are happy to deal with the tenant, landlord or agent. Just make sure your landlord agrees.
How much does external mastic cost in Farringdon?
It depends on the job, so we quote each one individually. For a quick quote, phone 0345 464 0079 or email us and tell us what needs doing and where.
Where are you based?
We’re a Crawley-based firm. We work across South East England, London and Scotland.
Do you guarantee your work?
Yes. Each job is guaranteed for twelve months, wherever you are.
Looking after it afterwards
After the cure time, these simple habits help:
- Act on the first splits you see
- Ask before painting over external sealant
- Wash walls gently around the sealant
- Keep movement joints as flexible joints, not mortar
Keep pressure washers away from the sealant. High-pressure water can lift the edges over time.
Leave a failed movement joint and water keeps getting into the wall. That can lead to damp patches, staining and frost damage, all bigger jobs than a reseal.
What happens on the day
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 anything from a few hours to several days, depending on the building. For a village or hamlet like Farringdon, 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
- Clear the area around the work
- Let us know about parking restrictions
- Keep pets and children clear of the area while we work
Ask for a quote
For a quick quote, get us on the phone, or email us if that’s easier. Describe what needs sealing and we’ll explain what’s involved.
Related advice
Can I do it myself?
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
Walls and rooflines in Farringdon
With historic houses such as Bentworth Hall (about 3.7 miles north-west) nearby, there’s older building stock in the area around Farringdon as well as newer homes. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth. Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Rented homes near Alton station change hands often, and outside joints that have cracked can let damp into a rental, so check them between lets.
Farringdon is about 3 miles south of Alton, in Hampshire. Whether you are in the middle of Farringdon or further out, external mastic is available for homes and businesses alike, from flats and houses to offices and hotels. Our area takes in 683 places across Hampshire. Our Portsmouth page covers work nearby.
All of GU34 is within our area for external mastic, from the main roads to the quietest streets. That includes homes and businesses on Hall Lane, Crows Lane and Gaston Lane and the roads around them. If you’re just outside Farringdon, we cover Upper Farringdon (1 mile north-east), Lower Farringdon (1 mile west), Chawton (2 miles north), Hartley Mauditt (2 miles east) and Alton (3 miles north). Within a short drive, we also cover Basingstoke (12 miles north-west), Winchester (15 miles west), Fleet (13 miles north-east), Horndean (14 miles south), Aldershot (14 miles north-east) and Petersfield (8 miles south).
Around Farringdon
We work in homes and buildings around Rose and Crown Inn, among other places. For rail, the closest station is Alton station, roughly 3 miles north of the centre. Other landmarks nearby include The Romany Museum (2.3 miles south-east) and Alton Community Hospital (2 miles north). For a walk, there’s Selborne Hill.