Hampshire · England
Hatch Warren External Mastic
Problem with your movement joints in Hatch Warren? We remove the old material, prepare the joints and seal them properly.
- Brick movement joints where the sealant has split
- Failed seals between different materials
- Sealant that has lost its bond to the brick or render
How to look after the new joints
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Show decorators and builders where the movement joints are
- Keep soil, plants and ivy away from the joints
- Look over the joints every year, ideally after winter
- Check the sealant is paintable before painting near it
Only paint over the joint if we have confirmed the sealant can take paint. Many exterior sealants aren’t designed to be painted.
A joint that has stopped moving pushes the movement elsewhere, normally as cracking in the brickwork or render nearby. Resealing it early helps prevent that.
How we handle external mastic in Hatch Warren
Short cuts in external joints show up within a season or two. Overfilled joints, missing backing rod and sealant laid over old sealant all tend to fail early. We strip the joint back and start again. We work on façade panels, concrete & block and copings & trims, and the jobs we see most are failed seals between different materials and leaking joints around cladding and façade panels.
Around Hatch Warren, garages, outbuildings and extensions all add to the joints on the outside of a home. Leaks usually start at a gutter end, a garage door frame or where an extension meets the house.
All our work is covered by a 12-month guarantee, wherever you are in Hampshire.
- Where
- Hatch Warren (RG22, RG25)
- Wider area
- Hampshire
- Cover
- 12 months on all our work
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
What we do, step by step
On the day, there’s very little for you to do. Show us the job and we will take it from there. The job generally takes a few hours for a handful of joints, longer for a whole elevation. Parking around Hatch Warren is normally easier than in a town centre, but mention any lanes, gates or long drives. For outside work, side access and the height of the joints help us plan.
- Each joint is checked and the colour of the new sealant agreed.
- Failed sealant is removed back to clean, sound faces.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- Primer is applied wherever the sealant needs it.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Before we arrive
- Try not to wet indoor joints just before the visit
- On commercial sites, let us know about site rules
- Plan for the work area to be out of bounds to pets and children
Ask for a quote
Need a quote? Please call 0345 464 0079 or send us an email with a few details. We will explain what we’d do and give you a clear price before any work starts.
Advice
External mastic in Hatch Warren: local notes
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.
Letting a property close to Basingstoke station? Then split movement joints are easy to miss on a rental until damp shows inside. For an older house near a landmark such as The Church Of Christ The King, the joints between older walls, newer extensions and the roofline need a sealant that can move.
Hatch Warren is about 2 miles south of Basingstoke, in Hampshire. We provide external mastic to homes and businesses in Hatch Warren and the surrounding area. Our Hampshire coverage runs to 683 places, and Hatch Warren is one of them. There’s also a page for Reading, roughly 16 miles from Hatch Warren.
All of RG22 and RG25 is within our area for external mastic. Streets in the area include Cyprus Road, Danebury Road and Cliddesden Lane. Close by, we work in Farleigh Wallop (1 mile south), Brighton Hill (1 mile north), Kempshott (1 mile north-west), South Ham (2 miles north) and Buckskin (2 miles north). Within a short drive, we also cover Winchester (15 miles south-west), Fleet (12 miles east), Aldershot (15 miles east), Alton (8 miles south-east), Yateley (14 miles north-east) and Tadley (8 miles north).
Local landmarks in Hatch Warren
In Hatch Warren, that means homes and buildings near Jolly Farmer Public House, Brighton Hill Community School and Coppice Spring School, among other places. Hatch Warren’s nearest station is Basingstoke station, about 2.7 miles north-east. Well-known places in the area include Willis Museum (2.4 miles north-east) and Festival Place (2.6 miles north-east). Not far away are Farleigh Hill and Daneshill Park Woods.
How the job changes by surface
Cladding and façade panels
Metal and composite panels move a lot with temperature, so the joint sealant has to cope with frequent movement. We choose the product to suit.
Brickwork movement joints
Vertical joints in long brick walls let the brickwork expand without cracking. They’re resealed over backing rod with a low-modulus sealant coloured to suit the wall.
FAQs for Hatch Warren
Is Hatch Warren in your area for external mastic?
Yes. Our work covers London and the South East, and Hatch Warren is part of that. You can call 0345 464 0079 or drop us an email and tell us what needs doing, and we will give you a clear price.
Can you help a landlord with a rental near Basingstoke station?
Yes, rental work is part of what we do. Just phone 0345 464 0079 or send us an email and tell us about the property, and we’ll give you a clear quote.
Is there any odour?
Sometimes, a little. It fades as the sealant cures.
Do you take out the old sealant first?
Always. Sealing over old sealant is the main reason resealing fails early, so we never do it.
Do you guarantee your work?
Yes: twelve months. If anything is not right with the work within the year, let us know and we’ll sort it.
Where do you work from?
Mr Mastic is based in Crawley. Our applicators cover Hatch Warren.
What information do you need?
Just the basics: the address or postcode, what’s wrong and any access issues. Then phone 0345 464 0079 or email us.
Do you have insurance?
Yes. Full insurance covers our work, and we can confirm the details when we quote.
What affects the quote in Hatch Warren
For a quick quote, just ask. What matters most is:
- The old material and how stubborn it is
- When we can work, for business premises
- How much there is to do
- Mould in or behind the old joints
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you’re not sure whether it needs doing, call 0345 464 0079 or email us for an honest opinion and a quote.
Helping us quote
Photos help, but a description is a good start. Please mention:
- The problem you’ve noticed
- Access, such as stairs, a lift or height
- The rough size of the job
- Any previous sealing or DIY work
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, ring 0345 464 0079 or send us an email.
Towns and villages near Hatch Warren
What else we do in Hatch Warren
DIY sealant or a professional job?
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
What we’re called out for in Hatch Warren
Many joints fail because they were sealed too deep or with nothing behind them. If the sealant sticks to the back as well as the sides, it can’t stretch and tears as soon as the joint widens.
The most common problems we see are:
- Panel joints letting water in
- Rain getting behind render or cladding at a joint
- Moss and dirt in joints with no sealant left
- Failed seals between different materials
Schools such as Hatch Warren Infant School are buildings too, and larger buildings have long runs of movement joint that eventually need resealing.
Before you book anyone
- What insurance they hold
- What guarantee comes with the work
- Who turns up on the day
- Whether you can choose the colour
What happens if it’s left?
A failed movement joint lets water into the wall and can run behind render or cladding. Resealing early keeps the job to the joint itself, instead of the wall and finishes around it. Around Hatch Warren, water from a failed joint in an older home can soak into timber and plaster, which is far harder to put right than the sealant itself.
There are no prices on our website, because each job is priced on what it involves. For a quick quote, please phone 0345 464 0079 or send us an email and we’ll talk you through it.
Why book with us
- Homes, businesses and hotels
- Colour picked to suit the job
- Over 20 years’ experience
- A choice of colours where the product allows
Take a look at our cost guide and our reviews.