Hampshire · England
Heckfield Heath External Mastic
Professional external mastic in and around Heckfield Heath, with old sealant always removed completely and a 12-month guarantee.
- Rigid filler in a joint that should flex
- Joints where the bead has come unstuck
- Cracked joints where brick meets render or frames
External mastic in Heckfield Heath, done properly
On houses, flats and commercial buildings across Heckfield Heath, we reseal joints in brickwork, render, cladding and façade panels. Every joint gets the same careful preparation: clean, sound faces and a controlled depth. Common call-outs are for joints pointed up with cement by mistake and sealant pulling away from one side of the joint, across render & cladding joints, joints between brick and frames and copings & trims.
Around Heckfield Heath, 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.
- Location
- Heckfield Heath (RG27, RG7)
- Region
- Hampshire
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
How it works
Every visit runs the same way: we check the joints, mask and protect the surrounding surfaces, carry out the job and tidy away. Most jobs take anything from a few hours to several days, depending on the building. Somewhere as small as Heckfield Heath, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- We inspect the joints and agree which need resealing and how they’ll be reached.
- Old sealant and any debris are cut and raked out.
- The joint faces are cleaned and primed where the sealant needs it.
- Backing rod goes in next, setting the depth and keeping the sealant off the back of the joint.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
Before we arrive
- Mention any sign-in or site rules at work premises
- Tell us about access, such as stairs, a lift or high-level joints
- Let us know about earlier repairs to the joints
Get a quote
Want a quote for external mastic? Please call 0345 464 0079 or send us an email and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.
Advice
Quotes for external mastic in Heckfield Heath
For a quick quote, just ask. What matters most is:
- Mould in or behind the old joints
- How much old sealant there is and how hard it is to remove
- When we can work, for business premises
- How many areas need sealing
Homes and businesses are quoted the same way: the amount of work, the access and the products needed, plus any working-time requirements on site. Ask us for a quote and we’ll explain what it covers.
What we need to know
Photos help, but a description is a good start. Try to tell us:
- What the problem is, such as mould, gaps, leaks or cracking
- Any access issues, like height or stairs
- Where the property is
- Whether it’s a home or a business
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints.
Looking after it afterwards
Joint life depends on how it’s used and looked after. We suggest:
- Clear growth from the base of walls and joints
- Act on the first splits you see
- Look over the joints every year, ideally after winter
- Wash walls gently around the sealant
Only paint over the joint if we have confirmed the sealant can take paint. Paint can crack on a flexible joint, and paint can crack as the joint moves.
An open movement joint lets rain into the wall every time it pours. Over time it can mean damp inside, stained render or frost-damaged brick which cost more to put right than the joint.
Towns and villages near Heckfield Heath
Other services in Heckfield Heath
How the job changes by surface
Render joints
Rendered walls have joints at beads, openings and changes of material. They’re resealed in a sealant that suits the render.
Copings and trims
Copings expand and contract through the day, so a flexible sealant suits them best in all weathers.
Heckfield Heath questions
Will you come out to Heckfield Heath?
Yes, we do. Our work covers London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
I let a flat near Mortimer station. Can you help?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. You can phone 0345 464 0079 or send us an email with the details for a clear quote.
Can a movement joint be filled with mortar?
No. A mortar-filled joint can’t move, so the movement cracks the wall elsewhere. Use a flexible sealant with backing rod.
What is a movement joint?
A movement joint is a planned break in the wall that absorbs expansion and shrinkage. It’s sealed with a flexible sealant, not mortar.
Are you fully insured?
Yes, we are fully insured.
Do the sealants smell?
There can be a smell while the sealant cures, which fades as it sets. Ventilation helps.
Do you do commercial work?
Yes. We work in offices, washrooms, hotels and other commercial premises, as well as homes. We can talk about working times when we quote.
Are you an approved applicator?
Yes. We’re approved under the ARBOMaster scheme, which is run for the Arbo sealant brand.
When something else is needed
We’d rather tell you now than do work that won’t last, so here’s what sealant can’t put right:
- Damp that isn’t coming from the joint
- Render that is blown, hollow or coming away
- Structural movement, which needs a surveyor or engineer
If you’re not sure, just phone 0345 464 0079 or email us and we will give you a straight answer before booking.
Surfaces we seal
- Render & cladding joints
- Copings & trims
- Brickwork movement joints
- Concrete & block
- Façade panels
- Joints between brick and frames
Walls and rooflines in Heckfield Heath
Historic houses like Stratfield Saye House (about 1.6 miles west) are a reminder that the area around Heckfield Heath has older buildings as well as new. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth. 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.
Homes close to Church of St Michael include some older properties, and older walls, gutters and the joints where extensions meet them need a flexible sealant.
Heckfield Heath is about 4 miles north of Hook, in Hampshire. Wherever you are in the RG27 postcode area, our applicators can take on external mastic. Across Hampshire, we cover 683 places, and Heckfield Heath is one of them. There’s also a page for Reading, about 7 miles away.
Every address in RG27 and RG7 is covered for external mastic. You’ll find streets such as Church Lane and The Causeway, and we cover them all. Nearby, we also carry out external mastic in Heckfield (1 mile south), Riseley (1 mile north), Bramshill (1 mile east), Hound Green (1 mile south) and Hazeley (2 miles south-east). Larger places within reach include Basingstoke (8 miles south-west), Farnborough (9 miles south-east), Fleet (7 miles south-east), Aldershot (11 miles south-east), Alton (14 miles south) and Yateley (5 miles east).
Around Heckfield Heath
Typical jobs here are in homes near Wellington Country Park and New Inn. Heckfield Heath’s nearest station is Mortimer station, roughly 3.8 miles north-west of the centre. A little further out are Beaumys Castle (2.3 miles north-west) and West Green House Agricultural Museum (3.3 miles south). For a walk, there’s The Marshes Local Nature Reserve.
For landlords and businesses
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
For anyone letting property in or around Heckfield Heath, jobs at different addresses can go on one quote. Send us the addresses and the work at each, and pictures by email help.
Do you need external mastic in Heckfield Heath?
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 sealant never bonds properly.
The problems people usually mention when they call are:
- Failed seals between different materials
- Sealant that has lost its bond to the brick or render
- Plants rooting in failed movement joints
- Weathered mastic that no longer stretches
Rented homes near Mortimer station change hands often, and split movement joints are easy to miss on a rental until damp shows inside.
What your quote should include
- What happens if they find a problem under the old sealant
- Whether you can choose the colour
- Whether they’re fully insured
- Whether they seal over old material or remove it