Greater London · England
Aperfield External Mastic
Movement joints in Aperfield need attention? We cut out the old, prepare the joints and apply the right sealant.
- Weeds or debris growing in open joints
- Leaking joints around cladding and façade panels
- Weathered mastic that no longer stretches
External mastic for homes and businesses in Aperfield
Joints in render and cladding are easy to overlook until a damp patch appears. We inspect them, agree which need doing and reseal with a weatherproof, flexible sealant. We work on copings & trims, brickwork movement joints and joints between brick and frames, and the jobs we see most are cracked joints where brick meets render or frames and brick movement joints where the sealant has split.
Working on the outside of a London home means planning access: shared paths, upper floors and parking. In Aperfield, joints up high may need ladders or other access, which is worth talking through when you book.
The work is covered for a year after we finish. If anything is not right with it, phone 0345 464 0079 or email us.
- Location
- Aperfield (TN16)
- Wider area
- Greater London
- Cover
- A year, on every job
- Quote
- A clear price before work begins
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Surface by surface
Cladding and façade panels
Cladding and façade panels are usually separated by sealed joints. We reseal them with a sealant suited to the panel material.
Joints between dissimilar materials
Brick against render, concrete against metal, stone against timber: every change of material is a joint. A flexible sealant bridges the two.
Common questions in Aperfield
Can you help a landlord with a rental near Oxted station?
Yes. We work for landlords and letting agents as well as homeowners. Just ring 0345 464 0079 or send us an email with the address and what needs doing, and we will send you a clear quote.
Is Aperfield in your area for external mastic?
Yes, Aperfield is within the area we cover. Our work covers London and the South East. Just phone 0345 464 0079 or send us an email with a few details of the job.
Do you work at height?
It depends on the height and the site. Low-level joints are straightforward; for higher work, tell us about the building and we will confirm what’s needed.
Do you seal joints where cladding meets other materials?
Yes. We cut out the old sealant, prepare both faces and reseal with a flexible exterior product. We pick a colour that works with both materials.
What do you need from me for a quote?
Just the basics: the address or postcode, what’s wrong and any access issues. After that, simply call 0345 464 0079 or email us.
Should I point up the gap in my brickwork?
No, not if it’s a movement joint. Filling it with mortar defeats its purpose and can lead to cracking. A flexible sealant is the right fill.
How much does external mastic cost in Aperfield?
There’s no set price, as it depends on the job: how much there is, what’s there now, how we reach it and what it needs. You will get a clear quote before any work starts.
Is it OK to seal over old sealant?
No. Fresh sealant does not stick to old sealant, and it traps any mould or water underneath. We remove it all first.
What external mastic looks like in Aperfield
London terraces and converted houses often share gutters, downpipes and walls, so check who is responsible for the outside before booking. London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
In the older streets around St Mark's Church, an extension built onto an older house moves differently, and the joint between them takes the strain. Letting a property close to Oxted station? Then split movement joints are easy to miss on a rental until damp shows inside. As a London address, Aperfield can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
Aperfield is about 4 miles east of Warlingham, in Greater London. Homes, rented property, offices and hotels in Aperfield can book us for external mastic, old or new, large or small. Every job comes with our one-year guarantee. Our area takes in 764 places across Greater London, large and small. London is on our list too, around 15 miles away.
Work in TN16 is quoted and booked the same way as anywhere else. External mastic is available to properties on Main Road, Haig Road and Lotus Road and the roads around them. We also cover Biggin Hill (1 mile north-west), Berry's Green (1 mile north-east), Single Street (1 mile north-east), Luxted (1 mile north) and Cudham (1 mile north-east). Further out, we also cover London (15 miles north-west), Whitechapel (15 miles north), Stockwell (13 miles north-west), Orpington (6 miles north-east), Wimbledon (14 miles north-west) and Plaistow (15 miles north).
What’s near Aperfield
In Aperfield, that means homes and buildings near Charles Darwin School and The Old Jail Public House. The closest station to Aperfield is Oxted station, about 4 miles south-west. Other landmarks nearby include Warlingham Park Hospital (3.4 miles west). Not far away are West Kent Golf Course nature reserve and Betsom's Hill.
Aftercare tips
Good habits help new joints last longer. A few tips:
- Fix overflowing gutters above sealed joints
- Keep soil, plants and ivy away from the joints
- Never let anyone fill a movement joint with mortar
- Check the sealant is paintable before painting near it
Make sure anyone working on the wall later knows where the movement joints are. They should be kept open and resealed, not filled.
A joint that has stopped moving pushes the movement elsewhere, usually as cracking in the brickwork or render nearby. Resealing it early helps prevent that.
What happens on the day
We keep the work tidy and contained to the area we are working on, so you can carry on as normal. Expect the work to take a few hours to a few days, depending on the length of joint and the access, and we explain the cure time before we leave. For a job in Aperfield, parking and access are the things to plan: let us know about parking, the floor we’ll be working on and any lift or shared entrance.
- We look at every joint and agree a colour to suit the wall.
- Failed sealant is removed back to clean, sound faces.
- Backing rod goes in so the sealant can stretch between the two faces.
- We prime the faces where required.
- We gun in low-modulus sealant and tool it neatly.
How to prepare
- Tell us about any water getting in
- Tell us about access, such as stairs, a lift or high-level joints
- Mention if the joints have been sealed before
Ask for a quote
Want a quote for external mastic? Please ring 0345 464 0079 or send us an email with a few details. You will know what we plan to do, and what it will cost, before any work begins.
Related advice
DIY versus a professional finish
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
A DIY attempt does not rule out a professional job. We remove it and do the joint properly, so just mention it when you contact us.
Why it’s worth doing now in Aperfield
A properly done movement joint is an even line in a colour that suits the wall. A hurried job with smeared edges and no backing looks worse and fails sooner so it’s worth doing right. In a London flat, a failed joint rarely stays your problem alone: water from a shower or window joint can reach the flat below, and gaps in fire-stopping matter to everyone in the building.
Doing several joints on one visit usually makes better use of the time than several visits. You’ll get one clear quote for the whole job.
Why us?
- Anti-fungal silicone where joints get wet
- Over 20 years’ experience
- Any old sealant cut out fully, not covered over
- Trusted Arbo and Everbuild sealants
See our cost guide and customer reviews.
Places near Aperfield
More services for Aperfield
How we quote for external mastic
Your quote is based on your job. We look at:
- The size of the job
- How easy the joints are to reach
- Any working-time requirements on site
- Whether old sealant or filler has to be cut out
We don’t show prices on the website, because each job is priced on what it involves. Call for a quick quote and we’ll talk you through it.
Helping us quote
To help us quote quickly, let us know:
- The problem you’ve noticed
- Where the job is, and your postcode
- Roughly how big the job is
- A few pictures by email, if you can
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and add photos by email if you can.
Work for landlords, hotels and businesses
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
If you manage several properties in or around Aperfield, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs, and pictures by email help.