Bracknell Forest · England
External Mastic in Jealott's Hill
Sealing brickwork movement joints, render, cladding and façade joints for Jealott's Hill, backed by a one-year guarantee. Call for a quick quote.
- Sealant that has lost its bond to the brick or render
- Hard, crazed mastic that has stopped moving
- Cracked joints where brick meets render or frames
External mastic for homes and businesses in Jealott's Hill
Where two different materials meet, such as brick and render or blockwork and metal, they move at different rates. A flexible sealant bridges the two. Common call-outs are for joints where the bead has come unstuck and panel joints letting water in, across brickwork movement joints, joints between brick and frames and render & cladding joints.
Around Jealott's Hill, older buildings can be stone, brick or timber-framed, many with extensions added later. Where one material meets another is where water generally gets in.
A 12-month guarantee comes as standard, so you are covered after we have gone.
- Where
- Jealott's Hill (RG42)
- Wider area
- Bracknell Forest
- Cover
- One year on every job
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Jealott's Hill buildings and the weather
With historic houses such as St Leonard's Hill (about 4.5 miles east) nearby, there’s older building stock in the area around Jealott's Hill as well as newer homes. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material. Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
For landlords with property near Bracknell station, split movement joints are easy to miss on a rental until damp shows inside. For an older house near a landmark such as Church of St Michael and All Angels, the joints between older walls, newer extensions and the roofline need a sealant that can move.
Jealott's Hill is about 3 miles north of Bracknell, in Bracknell Forest. Jealott's Hill gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Across Bracknell Forest, we cover 41 places, and Jealott's Hill is one of them. There’s also a page for Reading, about 10 miles away.
Here we cover the RG42 postcode area for external mastic. Local streets include Gough's Barn Lane and Maidenhead Road. Neighbouring places we cover for external mastic include Tickleback Row (1 mile south), Moss End (1 mile south), Hawthorn Hill (1 mile north-east), Nuptown (1 mile east) and Warfield (1 mile south-east). Within a short drive, we also cover Bracknell (3 miles south), Sandhurst (7 miles south), Great Hollands (4 miles south), Forest Park (4 miles south), The Warren (4 miles south) and Harmans Water (3 miles south).
Near you in Jealott's Hill
The nearest railway station is Bracknell station, roughly 2.8 miles south of the centre. Other landmarks nearby include The Lexicon (2.5 miles south) and Heatherwood Hospital (4.1 miles south-east). Not far away are Weycock Hill and Bray Pit.
When something else is needed
In fairness, some problems need a different trade:
- Failed render or damaged cladding panels
- Cracks in the bricks or render themselves, away from the joints
- Rising or penetrating damp from elsewhere in the wall
Not sure which it is? You can ring 0345 464 0079 or drop us an email and we’ll tell you honestly before booking.
Joints and surfaces we work on
- Render & cladding joints
- Joints between brick and frames
- Copings & trims
- Façade panels
- Brickwork movement joints
- Concrete & block
The process
We work through the job in order: protection first, then preparation, sealing and a tidy-up. For most jobs that takes a few hours to a few days, depending on the length of joint and the access. In a small place like Jealott's Hill, access is generally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- 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.
- Primer is applied wherever the sealant needs it.
- We gun in low-modulus sealant and tool it neatly.
How to prepare
- Tell us about any water getting in
- For business premises, tell us about site rules or sign-in
- Tell us if parking is tricky
Ask for a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we’ll explain how we’d tackle it. When it suits you, phone 0345 464 0079 or send us an email.
Related advice
Surface by surface
Concrete and blockwork
Concrete faces can be dusty and porous, so preparation is key. We prime where the sealant needs it before sealing.
Copings and trims
A failed coping joint lets water into the top of the wall. Resealing them is a small job that protects a lot.
For landlords and businesses
From a single let to a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a one-year guarantee.
Landlords and agents in Jealott's Hill can book us as well as homeowners. Resealing between tenancies is a simple way to keep a property in good order before the next move-in.
Also near Jealott's Hill
Also in Jealott's Hill
DIY sealant or a professional job?
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Your questions about external mastic in Jealott's Hill
Do you cover Jealott's Hill for external mastic?
Yes. We work across London and the South East, and Jealott's Hill is part of that. Just phone 0345 464 0079 or send us an email with a few details of the job.
Do you cover smaller places like Jealott's Hill?
Yes. Jealott's Hill is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Do you work at height?
That depends on the building and the joints. Where joints can be reached safely, we’ll do them. Tell us about the building and we’ll confirm what access is needed.
Will the old sealant be removed?
Yes. Sealing over the old bead is the commonest cause of early failure, so we never do it.
Why do you put foam in the joint first?
Backing rod controls the sealant depth and keeps it off the back of the joint. Then the sealant bonds to two faces and can move.
Is it messy?
No. The area is protected while we work and cleaned up afterwards.
Where is Mr Mastic based?
Mr Mastic is based in Crawley. We cover Jealott's Hill and the rest of Bracknell Forest.
How often do external joints need resealing?
It depends on the exposure, the movement and the product. Sealant is a maintenance item, so check the joints once a year and reseal when it splits.
Signs you need external mastic in Jealott's Hill
Poor preparation causes many early failures: joint faces that were dusty or damp, unprimed where they needed it, or still carrying old sealant. The new sealant then lets go long before it should.
Most people get in touch after spotting something like this:
- Water getting into walls through failed joints
- Rigid filler in a joint that should flex
- Weeds or debris growing in open joints
- Failed seals between different materials
Managing a site like Garth Hill College? Then movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Before booking anyone
- What insurance they hold
- How long the guarantee is
- Which colour the sealant will be
- Whether they seal over old material or remove it
How we quote for external mastic
Call for a quick quote. What matters most is:
- Any mould that needs treating
- Whether the work is at height
- How many areas need sealing
- The number and length of the joints
Commercial jobs are quoted on the same basis as homes: how much there is to do, how we reach it and what it needs. Call for a quick quote and we’ll explain what it covers.
Asking for a quote
Photos by email are helpful but not essential. Please mention:
- Photos by email, if that is easy
- The problem you’ve noticed
- If it’s domestic, commercial or a hotel
- The address or postcode of the job
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and email photos if that is easy.