West Berkshire · England
Ashford Hill External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for Ashford Hill, backed by a one-year guarantee. Call for a quick quote.
- Joints pointed up with cement by mistake
- Sealant that has lost its bond to the brick or render
- Hard, crazed mastic that has stopped moving
About our external mastic in Ashford Hill
External mastic is a job where short cuts show quickly. New sealant over old, joints packed with mortar and beads with no backing all tend to fail early. We take the old material out and do it properly. Common call-outs are for joints with sealant missing in places and failed sealant between panels on a façade, on joints between brick and frames, copings & trims and render & cladding joints.
External sealant needs dry, clean surfaces, so work around Ashford Hill is planned for dry weather. Let us know about access to every wall, plus any garages or outbuildings.
There’s a 12-month guarantee on every job, large or small.
- Where
- Ashford Hill (RG19)
- Wider area
- West Berkshire
- Cover
- A year, on every job
- Quote
- A clear price before we start
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Your questions about external mastic in Ashford Hill
Can you do external mastic in Ashford Hill?
Yes, Ashford Hill is within the area we cover. Our work covers London and the South East. Just ring 0345 464 0079 or send us an email with a few details of the job, and we will give you a clear price.
Can you help a landlord with a rental near Midgham station?
Yes, we work for landlords and agents. Just phone 0345 464 0079 or send us an email and tell us about the property, and we will send you a clear quote.
Can you reach joints on upper floors?
That depends on the building and the joints. We work on joints that can be reached safely. Tell us about the building and we’ll confirm what access is needed.
Can a movement joint be filled with mortar?
No, not where the gap is a movement joint. Pointing it stops it working, and the wall may crack nearby. We’ll reseal it with a flexible sealant.
Where is Mr Mastic based?
Our base is Crawley. We work across South East England, London and Scotland.
Can you seal joints between two different materials?
Yes. Where different materials meet is one of the most common joints we seal. We use a flexible sealant suited to both surfaces.
Do I need to be at home?
It depends on the job. Inside work needs someone to give us access, while outside work can sometimes be arranged differently.
Do you work for hotels and businesses?
Yes, regularly. Larger jobs can be planned room by room or area by area.
DIY sealant or a professional job?
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, and the work is guaranteed for a year.
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly, so tell us about it when you ask for a quote.
Signs you need external mastic in Ashford Hill
Every building moves. Brickwork grows a little over the years, blockwork and concrete shrink, and all of it moves with heat and moisture. All of that ends up in the joint sealant.
These are the problems we’re asked about most:
- Joints with sealant missing in places
- Movement joints filled with mortar instead of sealant
- Damp patches traced to an open external joint
- Weeds or debris growing in open joints
Managing a site like Ashford Hill Primary School? Then its movement joints, gutters and trims need looking after like any other building’s.
What to look for in a quote
- What the cure time is
- How the surfaces are prepared before sealing
- Who does the work, and how experienced they are
- Whether they seal over old material or remove it
How we quote for external mastic
We do not publish a price list. The quote depends on:
- How much there is to do
- Whether the work is at height
- Any mould that needs treating
- The type of sealant required
No two jobs are quite the same, so we quote each one individually. Size, access and the product the joint needs all play a part, and we will explain the quote if you ask.
Asking for a quote
What to tell us when you ask for a quote:
- Photos by email, if that’s easy
- How we’d reach the joints
- What the problem is, such as mould, gaps, leaks or cracking
- Roughly how big the job is
Asking for a quote is easy: tell us what needs doing and where. A few pictures by email make the job easier to understand, and we’ll take it from there.
Why deal with it now?
The longer a joint stays open, the more water the wall takes in. Wet masonry is more easily damaged by frost, so the damage spreads beyond the joint. Around Ashford Hill, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
There are no prices on our website, because the cost depends so much on the job itself. Call for a quick quote.
What you get with us
- Neat joints and a tidy finish
- Every job guaranteed for a year
- Sanitary silicone with an anti-fungal additive in wet areas
- An ARBOMaster approved applicator
Take a look at what affects the cost and customer reviews.
How the job changes by surface
Render joints
Render is weaker at the surface than brick, so a low-modulus sealant is kinder to the joint edges. We prime where the product needs it.
Cladding and façade panels
Cladding and façade panels are generally separated by sealed joints. Each joint gets a sealant that suits the panel and its movement.
What we do, step by step
When we arrive, we start by going over the job with you, so you know exactly what we are doing. Surfaces next to the work are protected before any work begins. Most jobs take a few hours to a few days, depending on the length of joint and the access. Somewhere like Ashford Hill needs a little journey planning: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- 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.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Before we arrive
- Tell us about any previous sealing or DIY attempts
- Where the joints are inside, avoid wetting them before we arrive
- Keep pets and children clear of the area while we work
Getting a quote
We don’t publish a price list. Instead, we send you a clear quote for your job. To arrange one, call 0345 464 0079 or drop us an email.
Related advice
Also near Ashford Hill
Also in Ashford Hill
Ashford Hill buildings and the weather
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.
Homes close to Church of St Paul include some older properties, and old and new materials meet at the roofline and walls, which is where sealant earns its keep. For landlords with property near Midgham station, failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Ashford Hill is about 3 miles west of Tadley, in West Berkshire. Whether you’re in the middle of Ashford Hill or further out, we cover external mastic for every kind of property. 155 places in West Berkshire are on our list, from the larger towns to small villages. Reading is on our list too, around 12 miles away.
Work in RG19 works the same way as everywhere else we cover. That includes homes and businesses on Chapel Lane, Benham Lane and Old Lane and the roads around them. We also cover Fair Oak (1 mile south), Hyde End (1 mile north), Goose Hill (1 mile north-west), Plastow Green (1 mile west) and Crookham (2 miles north-west). We also work in nearby towns such as Newbury (6 miles north-west), Thatcham (4 miles north-west), Burghfield Common (7 miles north-east), Speenhamland (6 miles north-west), Hungerford (14 miles west) and Spencers Wood (10 miles east).
Near you in Ashford Hill
Locally, jobs take us to homes and businesses close to The Hurst School and The Hurst School, among other places. Ashford Hill’s nearest station is Midgham station, about 3 miles north. Nearby you’ll also find Old Chapel Textile Centre (3.5 miles west) and West Berkshire Community Hospital (5.2 miles north-west). The countryside around Ashford Hill includes Thatcham Reed Beds.
Aftercare tips
Once the sealant has cured, a few habits help it last:
- Keep water from gutters off the wall
- Keep soil, plants and ivy away from the joints
- Leave the joints unpainted unless we have said otherwise
- Walk round the building once a year and look at the joints
Keep the joints clear of soil, plants and climbing growth. Anything that holds water against the joint wears it out sooner.
Leaks behind façade panels and render often go unseen. By the time there’s a damp patch, the damage can be well established so early resealing is worth it.