Bracknell Forest · England
Bullbrook External Mastic
Professional external mastic in and around Bullbrook, with every bit of old sealant taken out first and a 12-month guarantee.
- Plants rooting in failed movement joints
- Movement joints with cracked, split or missing sealant
- Joints pointed up with cement by mistake
External mastic for homes and businesses in Bullbrook
Movement joints let brickwork, render and cladding expand and shrink without cracking. The sealant in it has to stretch and squeeze for years, so once it splits or hardens, the joint stops working and water gets in. Common call-outs are for sealant that has lost its bond to the brick or render and gaps where render, brick and frames meet, on render & cladding joints, concrete & block and brickwork movement joints.
Around Bullbrook, garages, outbuildings and extensions all add to the joints on the outside of a home. Gutter ends, garage door frames and the joints where an extension meets the house are typical spots for leaks.
We stand behind the work with a one-year guarantee, so you are not left on your own once the job is done.
- Place
- Bullbrook (RG12, RG42, SL5)
- Region
- Bracknell Forest
- Cover
- A year, on every job
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
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.
The biggest DIY mistake is sealing over old sealant. New silicone will not bond to old, so it lifts and traps water and mould underneath. Everything old must be removed first.
When something else is needed
Some problems need a builder, plumber or other trade rather than us:
- Cutting new joints into brickwork, which is building work rather than sealant work
- Cracking across the wall rather than at a joint
- Failed render or damaged cladding panels
If in doubt, call 0345 464 0079 or email us and we’ll say what we think.
What we seal
- Joints between brick and frames
- Concrete & block
- Façade panels
- Copings & trims
- Render & cladding joints
- Brickwork movement joints
Nearby places to Bullbrook
Also in Bullbrook
What affects the quote in Bullbrook
We do not publish a price list. What we look at:
- How many areas need sealing
- Whether the work is at height
- The number and length of the joints
- Any working-time requirements on site
What it costs depends on the amount of work, how much old material has to come out and access to the work. We give a clear quote before we start.
Helping us quote
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- What the problem is, such as mould, gaps, leaks or cracking
- How we’d reach the joints
- Any previous sealing or DIY work
- A few pictures by email, if you can
Asking for a quote is easy: let us know the job and the location and its rough size. Photos by email help us understand the job, and we’ll take it from there.
Common problems we fix in Bullbrook
Using the wrong sealant is another common reason. A high-modulus or general-purpose sealant can be too rigid for a busy joint, so it pulls away from the edges.
People usually contact us when they notice one of these:
- Hard, crazed mastic that has stopped moving
- Movement joints with cracked, split or missing sealant
- Sealant that has lost its bond to the brick or render
- Failed seals between different materials
Managing a site like Holly Spring Junior School? Then larger buildings have long runs of movement joint that eventually need resealing.
Before booking anyone
- Whether the sealant suits the joint
- Is the old sealant removed completely?
- What happens if the job turns out different
- What the quote includes, VAT included or not
What the job involves on each surface
Brickwork movement joints
Brick movement joints are often mistaken for a missing mortar line. Where one has been mortared, we cut it out and reseal it with sealant.
Concrete and blockwork
Wide joints in concrete need the depth controlling carefully. We size the backing rod to the gap.
What we do, step by step
When we get to you, we check the joints match what you told us. If anything is different, we explain it before carrying on. Most jobs then take anything from a few hours to several days, depending on the building. In a smaller place like Bullbrook, parking is seldom the issue; lanes, gates and long drives are worth mentioning. For outside work, side access and the height of the joints help us plan.
- First, the joints are inspected and the access agreed.
- We cut out the old mastic and rake out anything in the joint.
- Joint faces are cleaned back and primed if the sealant needs it.
- We fit closed-cell backing rod to control the depth.
- The exterior sealant is applied, tooled and checked along its length.
Preparing for the visit
- Mention any parking rules near the property
- For business premises, tell us about site rules or sign-in
- Try not to wet indoor joints just before the visit
Ask for a quote
We don’t publish a price list. Instead, your job gets its own clear quote. To get started, ring 0345 464 0079 or email us.
Related advice
Why deal with it now?
A failed movement joint lets water into the wall. Dealing with it early keeps the repair to the joint, instead of the wall and finishes around it. In a smaller place like Bullbrook, wherever a wall is exposed, a failed outside joint is a real source of damp. Inside, a split seal lets water into floors and panels just as it would anywhere.
Commercial jobs are quoted on the same basis as homes: how much there is to do, how we reach it and what it needs, plus any working-time requirements on site. Call for a quick quote and we’ll go through it with you.
Why book with us
- Any old sealant cut out fully, not covered over
- We’re fully insured
- More than 20 years in sealant work
- 180+ five-star Google reviews
Read what affects the cost and what customers say.
Outside joints around Bullbrook
The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. Bullbrook is part of Bracknell, one of the post-war new towns. Many homes date from the post-war decades and were built in phases, so whole streets can have gutters, trims and wall joints reaching the end of their life together.
Homes close to St Paul include some older properties, and an extension built onto an older house moves differently, and the joint between them takes the strain. For landlords with property near Martins Heron station, split movement joints are easy to miss on a rental until damp shows inside.
Bullbrook is about 1 mile east of Bracknell, in Bracknell Forest. From the centre of Bullbrook to the outskirts, we cover external mastic for every kind of property. Our Bracknell Forest coverage runs to 41 places, Bullbrook among them. We also work in Reading, around 11 miles away.
Here we cover the RG12, RG42 and SL5 postcode area for external mastic. If you need external mastic at a property on Bay Road, London Road and Eastern Road or anywhere close by, we can help. If you are just outside Bullbrook, we cover Jennett's Park (1 mile south), Martins Heron (1 mile south-east), Wick Hill (1 mile north-west), Warfield Park (1 mile north-east) and Whitegrove (1 mile north). We also work in nearby towns such as Sandhurst (5 miles south-west), Binfield (3 miles west), College Town (6 miles south), Little Sandhurst (6 miles south-west), Owlsmoor (5 miles south-west) and Home Farm (3 miles south-west).
Around Bullbrook
Typical jobs here are in homes near The Brakenhale School, Garth Hill College and Old Manor House Hotel. The closest station to Bullbrook is Martins Heron station, roughly 0.6 miles south. A little further out are Heatherwood Hospital (1.9 miles east) and The Lexicon (0.9 miles west). For a walk, there’s Heath Lake and Wildmoor Heath.
Bullbrook: your questions answered
Can you help a landlord with a rental near Martins Heron station?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. You can ring 0345 464 0079 or email us with the details for a clear quote.
Do older homes in Bullbrook need their sealant replacing?
Often, yes: cracked, shrunken or mouldy sealant has done its job. New sealant won’t stick to old, so the old bead has to come out completely first.
Is there any odour?
Some sealants have a smell while they cure, but it fades. Opening a window helps.
Do you work for hotels and businesses?
Yes. We work in offices, washrooms, hotels and other commercial premises, as well as homes. We can talk about working times when we quote.
Will you leave a mess?
We keep the work tidy. Nearby surfaces are protected, and the area is left clean when we finish.
Do I have to be there?
For indoor joints, yes, someone needs to let us in. Once we’ve agreed the job, you don’t need to watch us work.
Can a movement joint be filled with mortar?
No, not if it’s a movement joint. Pointing it stops it working. We will reseal it with a flexible sealant.
Is the work guaranteed?
Yes: twelve months. If anything isn’t right with the work within the year, let us know and we will sort it.