Bracknell Forest · England
Jennett's Park External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for homeowners, landlords and businesses in Jennett's Park. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Sealant that has lost its bond to the brick or render
- Damp patches traced to an open external joint
- Panel joints letting water in
External mastic for homes and businesses in Jennett's Park
For buildings in Jennett's Park, we reseal external joints of all kinds, from brick movement joints to cladding panels. Every joint gets the same careful preparation: clean, sound faces and a controlled depth. We work on façade panels, render & cladding joints and brickwork movement joints, and people most often call us about joints with sealant missing in places and cracked joints where brick meets render or frames.
Houses in smaller places like Jennett's Park can stand more in the open than those in a built-up town, and walls and rooflines facing the weather take the worst of it. That’s where gutter joints and wall joints tend to fail first.
There’s a 12-month guarantee on every job, whatever its size.
- Place
- Jennett's Park (RG12)
- Wider area
- Bracknell Forest
- Cover
- A year, on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
What sealant work can’t fix
In fairness, some problems need a different trade:
- Cutting new joints into brickwork, which is building work rather than sealant work
- Loose or hollow render, which needs re-rendering
- Cracked brickwork or render that needs a builder or plasterer
Not sure which it is? You can call 0345 464 0079 or send us an email and we’ll tell you honestly.
Where we work in Jennett's Park
- Joints between brick and frames
- Façade panels
- Concrete & block
- Render & cladding joints
- Brickwork movement joints
- Copings & trims
What we are called out for in Jennett's Park
A lot of failed joints come down to preparation: dusty or wet faces, no primer where one was needed, or old sealant left in. The new sealant then lets go long before it should.
Signs it’s time to call us include:
- Water getting into walls through failed joints
- Leaking joints around cladding and façade panels
- Weeds or debris growing in open joints
- Hard, crazed mastic that has stopped moving
If you let a flat or house near Martins Heron station, outside joints that have cracked can let damp into a rental, so check them between lets.
What your quote should include
- What guarantee comes with the work
- How long to leave it before use
- How the joint is cleaned and prepared
- How hidden problems are handled
The process
Every visit runs the same way: we check the joints, protect the area around them, carry out the job and clear up. It usually takes a few hours to a few days, depending on the length of joint and the access. Parking around Jennett's Park is generally easier than in a town centre, but mention any lanes, gates or long drives. If the job is outside, tell us about side access and how high the joints are.
- 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.
- We fit closed-cell backing rod to control the depth.
- We apply the sealant, tool it and check the whole run.
How to prepare
- Where the joints are inside, avoid wetting them before we arrive
- Keep children and pets away from the work area
- Let us know about parking restrictions
Ask for a quote
Getting a quote is simple: let us know the job and the location, and roughly how big it is. Photos by email help us understand the job, and we’ll come back to you with a quote.
Related advice
Quotes for external mastic in Jennett's Park
For a quick quote, just ask. The main things that affect it are:
- The number and length of the joints
- The product the joint needs
- Any mould that needs treating
- Any working-time requirements on site
Combining jobs into one visit is normally more efficient than separate visits, so tell us about everything that needs sealing. You will get one clear quote for the whole job.
Helping us quote
What to tell us when you ask for a quote:
- Where the job is, and your postcode
- How we’d reach the joints
- Any previous sealing or DIY work
- The type of property
We quote each job on its own, so start by telling us what you need. Simply call 0345 464 0079 or email us and describe the job, and photos are welcome.
Why it’s worth doing now in Jennett's Park
It often makes sense to reseal all the failing joints on an elevation together. Joints of the same age tend to fail together. Homes in smaller places like Jennett's Park can face more weather, and failed outside joints let damp into walls. Indoors, a failed seal lets water into floors and panels as it would anywhere.
Some things make a job bigger or smaller: the old material and how easily it comes out, any mould to treat, and whether we need extra access for height. Your quote takes all of that into account.
Why choose Mr Mastic in Jennett's Park
- White, clear, grey or another colour, product permitting
- Trusted Arbo and Everbuild sealants
- Any old sealant cut out fully, not covered over
- Anti-fungal silicone where joints get wet
See our cost guide and customer reviews.
Aftercare tips
No joint lasts for ever, but care makes a real difference. A few tips:
- Tell anyone working on the walls about the movement joints
- Get split or bare joints resealed while the damage is small
- Keep high-pressure jets off the joints
- Check the sealant is paintable before painting near it
Do not paint over the new sealant unless we’ve said the product is paintable. Many exterior sealants are not designed to be painted, and paint can crack as the joint moves.
Act while the splits are small. At that stage it’s a simple cut out and reseal before water has had years to get in.
Outside joints around Jennett's Park
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. Jennett's Park is part of Bracknell, one of the post-war new towns. Homes here were built in phases, many of them in the post-war decades, so neighbouring houses often have rooflines and wall joints of the same age, wearing out at the same time.
Homes close to St Paul include some older properties, and old and new materials meet at the roofline and walls, which is where sealant earns its keep. If you look after a building such as Harmans Water Primary School, larger buildings have long runs of movement joint that eventually need resealing.
Jennett's Park is about 1 mile east of Bracknell, in Bracknell Forest. Across the RG12 area, we cover external mastic for homes and businesses. Our Bracknell Forest coverage runs to 41 places, and Jennett's Park is one of them. We also work in Reading, about 11 miles from Jennett's Park.
All of RG12 is within our area for external mastic, from the main roads to the quietest streets. Whether your property is on Bog Lane, The Square and Mendip Road or a nearby road, we can help. Nearby, we also carry out external mastic in Martins Heron (1 mile east), The Warren (1 mile south-east), Harmans Water (1 mile south-west), Forest Park (1 mile south) and Bullbrook (1 mile north). We also work in nearby towns such as Sandhurst (5 miles south-west), Binfield (3 miles north-west), College Town (5 miles south-west), Little Sandhurst (5 miles south-west), Owlsmoor (4 miles south-west) and Home Farm (3 miles south-west).
Near you in Jennett's Park
In Jennett's Park, that means homes and buildings near Ranelagh School, The Horse And Groom Public House and The Brakenhale School. There’s a railway station in Jennett's Park itself: Martins Heron station. A little further out are Heatherwood Hospital (1.9 miles east) and The Lexicon (1.1 miles north-west). Green spaces nearby include Heath Lake and Wildmoor Heath.
Also near Jennett's Park
Other services in Jennett's Park
Your questions about external mastic in Jennett's Park
Can you help a landlord with a rental near Martins Heron station?
Yes. We work for landlords and letting agents as well as homeowners. Just phone 0345 464 0079 or email us with the address and what needs doing, and we will send you a clear quote.
Do you cover smaller places like Jennett's Park?
Yes, Jennett's Park is covered. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
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.
What do you put in the joint?
Products from Arbo and Everbuild, among others, chosen to suit the joint. We explain the product when we quote.
Is it OK to fill a movement joint with cement?
No. Mortar locks the joint solid, so the wall cracks somewhere else instead. Use a flexible sealant with backing rod.
Do you work at height?
Each building is different. Send us photos and a rough idea of the height.
Will there be a smell?
Some sealants have a smell while they cure, which fades as it sets. Opening a window helps.
Are you fully insured?
Yes. Mr Mastic is fully insured.
DIY sealant or a professional job?
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly.
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.