Bracknell Forest · England
Hawthorn Hill External Mastic
External mastic across Hawthorn Hill and nearby, with old sealant always removed completely and a one-year guarantee.
- Rigid filler in a joint that should flex
- Weathered mastic that no longer stretches
- Sealant that has lost its bond to the brick or render
Keeping the joints in good condition
Once the sealant has cured, a few habits help it last:
- Have failed joints looked at early
- Leave the joints unpainted unless we have said otherwise
- Keep movement joints as flexible joints, not mortar
- Avoid pressure-washing directly into sealant joints
Keep the joints clear of soil, plants and climbing growth. Anything that holds water against the joint wears it out sooner.
Gaps, plants or missing sealant in a joint are worth getting looked at. Earlier resealing means a smaller job and a better result.
How we handle external mastic in Hawthorn Hill
Joints between dissimilar materials, like brick against render or concrete against a steel frame, see movement from both sides. A flexible sealant bridges the two where a rigid filler would soon crack. If you have weathered mastic that no longer stretches and joints with sealant missing in places, we can help, whatever the surface.
Older homes in small places like Hawthorn Hill may be stone, brick or timber-framed, often with later extensions. The joints where those materials meet are the weak points.
There’s a 12-month guarantee on every job.
- Location
- Hawthorn Hill (RG42)
- Wider area
- Bracknell Forest
- Guarantee
- A year, on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
How the visit works
There’s no need to move everything out before we come, just the space around the work. Everything nearby is protected, and the work takes anything from a few hours to several days, depending on the building in most cases. Somewhere as small as Hawthorn Hill, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- First, the joints are inspected and the access agreed.
- We cut out the old mastic and rake out anything in the joint.
- The faces are brushed clean and primed where the product requires it.
- We fit closed-cell backing rod to control the depth.
- We apply the sealant, tool it and check the whole run.
How to prepare
- Mention any sign-in or site rules at work premises
- Let us know about stairs, lifts or work at height
- Let us know about earlier repairs to the joints
How to get a quote
Every job is quoted individually, so the first step is telling us about yours. Simply phone 0345 464 0079 or send us an email and describe the job, and photos are welcome.
Advice
DIY sealant or a professional job?
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.
Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. All the old material has to come out first.
Towns and villages near Hawthorn Hill
More services for Hawthorn Hill
Hawthorn Hill questions
Can you help a landlord with a rental near Bracknell station?
Yes, we work for letting agents and landlords. You can phone 0345 464 0079 or send us an email with the address and a few details, and we’ll give you a fixed price before work begins.
Will you come out to Hawthorn Hill?
Yes, Hawthorn Hill is covered. We work across London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Do the sealants smell?
Possibly a little. It fades as the sealant cures.
What colours does the sealant come in?
We aim for a joint that suits the wall rather than one that jumps out. We will talk through colour options before work begins.
Can you seal joints between render and window frames?
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.
Which products do you use?
Products from Arbo and Everbuild, among others, chosen to suit the joint. We’ll tell you what we’re using and why.
Does someone need to be in?
Access is agreed with you when the job is booked. For inside work, that normally means someone being in.
What do you need from me for a quote?
Just the basics: the address or postcode, what’s wrong and any access issues. Then ring 0345 464 0079 or send us an email.
Landlords, agents and businesses in Hawthorn Hill
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance that we can handle for you.
Why it’s worth doing now in Hawthorn Hill
Pointing a movement joint with mortar might seem a neat fix, but it locks the joint solid. The movement then cracks the brickwork or render nearby. A flexible sealant over backing rod is what the joint needs. Around Hawthorn Hill, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
Instead of a standard rate, we look at what your job involves: the amount of work, the old material and the access. The price is agreed before we begin.
Why us?
- We are fully insured
- We never seal over old sealant
- A 12-month guarantee on all work
- 4.9 on Google from 180+ five-star reviews
Outside joints around Hawthorn Hill
Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. Historic houses like St Leonard's Hill (about 3.8 miles east) are a reminder that the area around Hawthorn Hill has older buildings as well as new. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material.
Letting a property close to Bracknell station? Then failed wall and movement joints let damp in, so they’re worth checking between tenancies. Homes close to Church of St Michael and All Angels include some older properties, and old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Hawthorn Hill is about 3 miles north of Bracknell, in Bracknell Forest. We provide external mastic to homes and businesses in Hawthorn Hill, as part of our work across Bracknell Forest. We cover 41 towns and villages across Bracknell Forest, from the larger towns to small villages. Our Reading page covers work nearby.
We cover every part of the RG42 postcode area for external mastic and the streets around it. Local streets include Ascot Road and Maidenhead Road, and we cover them all. Nearby, we also carry out external mastic in Nuptown (1 mile south-east), Jealott's Hill (1 mile south-west), Moss End (1 mile south-west), Braywoodside (1 mile north) and Tickleback Row (1 mile south-west). Within a short drive, we also cover Bracknell (3 miles south), Sandhurst (8 miles south), Wick Hill (3 miles south), Priestwood (3 miles south-west), Binfield (3 miles south-west) and Great Hollands (4 miles south).
What’s near Hawthorn Hill
The closest station to Hawthorn Hill is Bracknell station, roughly 3.2 miles south of the centre. Other landmarks nearby include Heatherwood Hospital (4 miles south-east) and The Lexicon (2.9 miles south). Not far away are Weycock Hill and Bray Pit.
What we are called out for in Hawthorn Hill
Sometimes a movement joint was filled with mortar or a rigid filler. The joint can’t move, so the wall cracks somewhere else instead.
Look out for any of the following:
- Rain getting behind render or cladding at a joint
- Brick movement joints where the sealant has split
- Panel joints letting water in
- Movement joints filled with mortar instead of sealant
Schools such as Holyport College are buildings too, and movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
What to look for in a quote
- How long to leave it before use
- Is the old sealant removed completely?
- Who turns up on the day
- Whether VAT is included
When something else is needed
Some problems need a builder, plumber or other trade rather than us:
- Render that is blown, hollow or coming away
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Subsidence or other structural problems
If in doubt, call 0345 464 0079 or drop us an email and we will say what we think before you book.
What we seal
- Render & cladding joints
- Joints between brick and frames
- Façade panels
- Brickwork movement joints
- Concrete & block
- Copings & trims