Buckinghamshire · England
External & façade joints in Iver, Buckinghamshire
Problem with your movement joints in Iver? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.
- Brick movement joints where the sealant has split
- Movement joints filled with mortar instead of sealant
- Damp patches traced to an open external joint
External mastic in Iver, done properly
A movement joint is a deliberate break that lets a wall expand and contract. Its sealant has to flex with the building, season after season, and when it fails, the wall takes the strain and water finds a way in. Typical jobs include weathered mastic that no longer stretches and failed seals between different materials, across copings & trims, render & cladding joints and joints between brick and frames.
External sealant needs dry, clean surfaces, so work around Iver is planned for dry weather. Tell us about access to all sides of the building, including outbuildings and garages.
The work is guaranteed for twelve months. If something isn’t right with it in that time, tell us and we’ll put it right.
- Place
- Iver (SL0)
- Wider area
- Buckinghamshire
- Guarantee
- 12 months on all our work
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Why act early in Iver
An open joint keeps letting water into the wall with every downpour. In cold weather, frost can damage wet brick and render, so the problem grows beyond the joint itself. In a small place like Iver, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
What you pay reflects the work, not guesswork. That’s why we ask about the job first and agree the price before starting.
What you get with us
- Over 20 years’ experience
- Full insurance on every job
- Old sealant always removed completely
- Experience in homes, commercial sites and hotels
Read our cost guide or our reviews.
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.
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.
What we cannot put right
We won’t take on work that won’t last, so these are the limits:
- Subsidence or other structural problems
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Cutting new joints into brickwork, which is building work rather than sealant work
If you are not sure, just ring 0345 464 0079 or send us an email and we’ll give you a straight answer before you book.
Surfaces we seal
- Façade panels
- Render & cladding joints
- Concrete & block
- Copings & trims
- Brickwork movement joints
- Joints between brick and frames
Walls and rooflines in Iver
With historic houses such as Ickenham Hall (about 4.1 miles north-east) nearby, there’s older building stock in the area around Iver 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, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
If you let a flat or house near Iver station, outside joints that have cracked can let damp into a rental, so check them between lets. For site and facilities teams at buildings such as Iver Village Infant School, its movement joints, gutters and trims need looking after like any other building’s. In the older streets around Church of St Peter, an extension built onto an older house moves differently, and the joint between them takes the strain.
Iver is about 3 miles south-west of Hillingdon, in Buckinghamshire. Every kind of property in Iver is covered for external mastic. The work is guaranteed for a year. Iver is one of 263 towns and villages in Buckinghamshire we cover for external mastic. Our London page covers work nearby (18 miles or so).
Jobs for external mastic in SL0 works the same way as everywhere else we cover. External mastic is available to properties on High Street, Woodcock Way and Dutton Way and the roads around them. If you’re just outside Iver, we cover Shreding Green (1 mile west), Richings Park (1 mile south), Iver Heath (1 mile north-west), George Green (2 miles west) and Langley (2 miles south-west). Within a short drive, we also cover High Wycombe (13 miles north-west), Chesham (14 miles north), Marlow (12 miles west), Amersham (11 miles north), Beaconsfield (9 miles north-west) and Chalfont St Peter (6 miles north).
Local landmarks in Iver
We work in homes and buildings around Uxbridge High School, The Chequers pub and West Middlesex College. The nearest railway station is Iver station, about 0.8 miles south of the centre. Nearby you will also find Windsor Castle (4.8 miles south-west) and Hillingdon Hospital (2.1 miles east). For a walk, there’s Uxbridge Moor.
Surface by surface
Copings and trims
Coping and trim joints face rain and sun head on. We reseal them with an exterior sealant suited to the material.
Concrete and blockwork
Concrete faces can be dusty and porous, so cleaning and priming matter. A primer goes on where the product requires one before the bead.
Also in Iver
What we do, step by step
Good joint work is mostly preparation, and we don’t rush it. Joints are cleaned back and dried before anything new goes in. All told, the work takes a few hours for a handful of joints, longer for a whole elevation. Somewhere like Iver needs a little journey planning: 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 walking round the building and agreeing the joints and the access.
- We cut out the old mastic and rake out anything in the joint.
- Joint faces are cleaned back and primed if the sealant needs it.
- Backing rod sized to the joint goes in to set the depth.
- The exterior sealant is applied, tooled and checked along its length.
Getting ready for the visit
- Keep pets and children clear of the area while we work
- Tell us about any previous sealing or DIY attempts
- For indoor joints, keep the area dry beforehand if you can
Ask for a quote
We don’t publish a price list, because every job is different. Instead, we send you a clear quote for your job. To get started, phone 0345 464 0079 or drop us an email.
Related advice
Iver questions
Is Iver within the area you cover?
Yes. Iver 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 help a landlord with a rental near Iver station?
Yes, landlords and agents are among the people we work for. Just call 0345 464 0079 or send us an email with the address and what needs doing, and we’ll give you a clear quote.
Is there any odour?
There can be a smell while the sealant cures, which fades as it sets. Ventilation helps.
Do you remove the old sealant?
Always. Sealing over old sealant is the main reason resealing fails early, and it’s something we never do.
How long does the job take?
As a guide, most jobs take a few hours for a handful of joints, longer for a whole elevation. Larger jobs naturally take longer, and we will say how long yours will take.
Are you ARBOMaster approved?
Yes. We’re ARBOMaster approved, the scheme for applicators of Arbo sealants.
Do you use backing rod?
Backing rod goes into deeper joints as a matter of course. It controls the depth and stops the sealant bonding to the back so the bead can stretch.
Can you reach joints on upper floors?
That depends on how high the joints are and the ground below. Low-level joints are straightforward; for higher ones, send details and we will confirm the access.
Looking after it afterwards
Good habits help new joints last longer. Our tips:
- Check external joints each spring
- Avoid pressure-washing directly into sealant joints
- Check the sealant is paintable before painting near it
- Have failed joints looked at early
Follow the cure time we give you before the joint is knocked or disturbed. Most exterior sealants skin fast but take longer to cure right through.
Leaks behind façade panels and render often go unseen. When it finally shows inside, the joint may have been open for years so early resealing is worth it.
Landlords, agents and businesses in Iver
Whether it’s one flat or a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a 12-month guarantee.
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance that we can handle for you.