West Berkshire · England
Heads Hill External Mastic
External mastic for Heads Hill and the surrounding area: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Movement joints with cracked, split or missing sealant
- Hard, crazed mastic that has stopped moving
- Moss and dirt in joints with no sealant left
Looking after it afterwards
No joint lasts for ever, but care makes a real difference. Our tips:
- Look over the joints every year, ideally after winter
- Ask before painting over external sealant
- Deal with leaking gutters that soak the joints below
- Keep soil, plants and ivy away from the joints
Give the sealant the cure time we tell you before anything rubs against it. Most exterior sealants skin fast but take longer to cure right through.
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.
How we handle external mastic in Heads Hill
We’re ARBOMaster approved applicators, and each external joint gets a sealant suited to it. Porous or awkward surfaces are primed where the sealant needs it. If you have joints pointed up with cement by mistake and panel joints letting water in, we can put it right.
Somewhere as small as Heads Hill, homes and farm buildings often face open ground, so walls and rooflines take the full force of wind and rain. Gutter joints and wall joints there need a sealant that can flex and stay put.
Every job is covered by a one-year guarantee, wherever you are in West Berkshire.
- Where
- Heads Hill (RG19, RG20)
- Wider area
- West Berkshire
- Cover
- One year on every job
- Price
- A clear price before work begins
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Different surfaces, different methods
Joints between dissimilar materials
Joints where frames, sills or panels meet the wall are common leak points. The old joint is removed and a sealant that bonds to both sides goes in.
Copings and trims
Metal and stone copings both move with temperature, so a flexible sealant suits them best year round.
When it is not the sealant
A few problems are outside what sealant work can do:
- Cutting new joints into brickwork, which is building work rather than sealant work
- Loose or hollow render, which needs re-rendering
- Cracking across the wall rather than at a joint
Not sure which it is? You can ring 0345 464 0079 or send us an email and we’ll tell you honestly.
Joints and surfaces we work on
- Render & cladding joints
- Façade panels
- Joints between brick and frames
- Brickwork movement joints
- Copings & trims
- Concrete & block
FAQs for Heads Hill
I let a flat near Thatcham station. Can you help?
Yes. We work for letting agents and landlords as well as homeowners, and several properties can be quoted together. You can phone 0345 464 0079 or send us an email with the details for a clear quote.
Is Heads Hill in your area for external mastic?
Yes. Our work covers London and the South East, and Heads Hill is part of that. You can phone 0345 464 0079 or send us an email and tell us what needs doing, and we will give you a clear price.
Do you remove the old sealant?
Yes, always, and completely. New silicone does not stick to old silicone, so the joint is cleaned back first.
When will the joints need doing again?
That depends on the wall, the weather and the movement. Signs to watch for are cracking, hardening and gaps at the edges.
Can a movement joint be filled with mortar?
No, not if it’s a movement joint. Pointing it stops it working and can lead to cracking. A flexible sealant is the right fill.
Can you work on commercial sites?
Yes. Larger jobs can be planned room by room or area by area.
How long does external mastic take?
A typical job takes a few hours to a few days, depending on the length of joint and the access. Your quote will say how long we expect yours to take.
Can you quote for more than one area?
Yes. More than one area can go on one quote.
Places near Heads Hill
Also in Heads Hill
Landlords, agents and businesses in Heads Hill
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.
In hotels, rooms out of use cost money, so the work can be planned room by room. Hotel work is part of what we do, alongside homes and businesses.
External mastic in Heads Hill: local notes
With historic houses such as Shaw House (about 3.3 miles north-west) nearby, there’s older building stock in the area around Heads Hill as well as newer homes. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth. 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.
Managing a site like Cheam School? Then movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. Letting a property close to Thatcham station? Then split movement joints are easy to miss on a rental until damp shows inside.
Heads Hill is about 2 miles south of Thatcham, in West Berkshire. Jobs in Heads Hill get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Our area takes in 155 places across West Berkshire. We also work in Reading, about 14 miles from Heads Hill.
All of RG19 and RG20 is covered for external mastic, from the main roads to the quietest streets. Streets in the area include Main Street, Thornford Road and Second Street East, and we cover them all. Neighbouring places we cover for external mastic include Bishop's Green (1 mile south-west), Headley (1 mile south-east), Bury's Bank (1 mile north-west), Mill Green (1 mile south-east) and Goose Hill (2 miles south-east). Within a short drive, we also cover Newbury (3 miles north-west), Burghfield Common (9 miles east), Speenhamland (3 miles north-west), Hungerford (11 miles west), Spencers Wood (13 miles east) and Calcot (11 miles north-east).
Landmarks near Heads Hill
In Heads Hill, that means homes and buildings near New Greenham Park and Kennet School. The nearest railway station is Thatcham station, roughly 1.9 miles north-east. Other landmarks nearby include Donnington Castle (4.3 miles north-west) and West Berkshire Community Hospital (2.4 miles north). Green spaces nearby include Thatcham Reed Beds and Ladle Hill.
Leave it or put it right?
Sealing over the top of old mastic does not hold for long. New sealant doesn’t bond well to old, weathered sealant, so the old joint is cut out fully first. In a small place like Heads Hill, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
Instead of a standard rate, we look at what your job involves: how many joints, what’s in them now and how we reach them. You will know the price before we begin.
Why choose Mr Mastic in Heads Hill
- An ARBOMaster approved applicator
- White, clear, grey or another colour, product permitting
- Arbo and Everbuild products
- 20+ years of sealant experience
Read our cost guide or customer reviews.
The process
At the end, we look at the finished work together and explain the cure time. The visit itself generally takes a few hours for a handful of joints, longer for a whole elevation, depending on the amount of work. In a small place like Heads Hill, access is normally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- 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.
- Backing rod sized to the joint goes in to set the depth.
- We apply the sealant, tool it and check the whole run.
Before we arrive
- Clear the area around the work
- Let us know if you’ve seen damp or leaks
- Let us know about parking restrictions
Ask for a quote
There’s no standard price list, because every job is different. Instead, we send you a clear quote for your job. To get started, ring 0345 464 0079 or drop us an email.
Advice
Common problems we fix in Heads Hill
If plants are growing out of a joint, the sealant has normally failed or was never there. Dirt and roots then trap moisture in the joint and make things worse.
Most people get in touch when they notice something like this:
- Plants rooting in failed movement joints
- Sealant pulling away from one side of the joint
- Water getting into walls through failed joints
- Leaking joints around cladding and façade panels
Homes close to Church of St Peter include some older properties, and old and new materials meet at the roofline and walls, which is where sealant earns its keep.
What to look for in a quote
- How the colour is chosen
- Who turns up on the day
- Whether they seal over old material or remove it
- What the quote includes, VAT included or not