Hampshire · England
External & façade joints in Hartley Wintney, Hampshire
Movement joints in Hartley Wintney need attention? We cut out the old, prepare the joints and apply the right sealant, with a one-year guarantee.
- Weeds or debris growing in open joints
- Rain getting behind render or cladding at a joint
- Sealant that has lost its bond to the brick or render
How we handle external mastic in Hartley Wintney
A movement joint is only as good as its depth. Backing rod controls how deep the sealant goes and keeps it off the back of the joint, leaving it bonded to two faces so it can move with the wall. We are often asked to deal with joints pointed up with cement by mistake and plants rooting in failed movement joints, across brickwork movement joints, copings & trims and joints between brick and frames.
Houses in smaller places like Hartley Wintney 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 is where gutter joints and wall joints tend to fail first.
We stand behind the work with a 12-month guarantee.
- Where
- Hartley Wintney (RG27)
- Wider area
- Hampshire
- Cover
- One year on every job
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
How to look after the new joints
Good habits help new joints last longer. Our tips:
- Keep soil, plants and ivy away from the joints
- Point out the joints to other trades
- Wash walls gently around the sealant
- Keep water from gutters off the wall
Look over the joints once a year, ideally after winter. Watch for splits, edges coming away or growth in the joint.
An open movement joint lets rain into the wall every time it pours. That can lead to damp patches, staining and frost damage.
Should I try it myself first?
A DIY attempt does not rule out a professional job. We remove it and do the joint properly.
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
Landlord and commercial work in Hartley Wintney
Landlords and agents in Hartley Wintney can book us as well as homeowners. Resealing between tenancies keeps a property looking cared for.
Hotels need rooms back in use, so the work can be planned room by room. Hotel work is part of what we do, alongside homes and businesses.
When something else is needed
Honest advice matters more to us than a booking, so here’s what sealant can’t fix:
- Walls that need new movement joints cut into them
- Movement that’s more than a sealant joint can take
- Render that’s blown, hollow or coming away
If in doubt, ring 0345 464 0079 or drop us an email and we’ll say what we think.
Where we work in Hartley Wintney
- Brickwork movement joints
- Render & cladding joints
- Façade panels
- Copings & trims
- Concrete & block
- Joints between brick and frames
What happens on the day
The work is kept neat and contained to the area we are working on. The job usually takes a few hours for a handful of joints, longer for a whole elevation. For a job in Hartley Wintney, we agree the time, the access and parking before the day. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- First we look over the joints with you, agree which to renew and talk through access.
- Old sealant and any debris are cut and raked out.
- The joint faces are cleaned and primed where the sealant needs it.
- Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
Preparing for the visit
- Tell us if parking is tricky
- Let us know about stairs, lifts or work at height
- Let us know about earlier repairs to the joints
Getting a quote
Need a quote? Please phone 0345 464 0079 or drop 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.
Read more
Why act early in Hartley Wintney
The longer a joint stays open, the more water the wall takes in. In cold weather, frost can damage wet brick and render around the joint, so the problem grows beyond the joint itself. Homes in smaller places like Hartley Wintney 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.
Rather than a set price list, we price the job in front of us: how many joints, what’s in them now and how we reach them. You will know the price before we begin.
Why choose Mr Mastic in Hartley Wintney
- 12-month guarantee on every job
- Experience in homes, commercial sites and hotels
- Trusted Arbo and Everbuild sealants
- 180+ five-star Google reviews
Read what affects the cost or what customers say.
Walls and rooflines in Hartley Wintney
London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
In the older streets around St John's Church, older walls, gutters and the joints where extensions meet them need a flexible sealant. Managing a site like Greenfields Junior School? Then larger buildings have long runs of movement joint that eventually need resealing. Letting a property close to Winchfield station? Then split movement joints are easy to miss on a rental until damp shows inside.
Hartley Wintney is about 4 miles north-west of Fleet, in Hampshire. Hartley Wintney gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. 683 places in Hampshire are on our list. Our Reading page covers work nearby, about 10 miles away.
Work in RG27 works the same way as everywhere else we cover. You will find streets such as London Road, High Street and Harthouse Court, all of which we cover. We also cover the places around Hartley Wintney: Mattingley (2 miles west), Hazeley (2 miles north-west), Hound Green (3 miles north-west), Rotherwick (3 miles west) and Bramshill (3 miles north-west). Within a short drive, we also cover Basingstoke (9 miles west), Farnborough (6 miles east), Fleet (4 miles south-east), Aldershot (7 miles south-east), Alton (11 miles south) and Yateley (4 miles north-east).
Landmarks near Hartley Wintney
In Hartley Wintney, that means homes and buildings near The Waggon & Horses pub. For rail, the closest station is Winchfield station, about 1.4 miles south. Nearby you will also find Fleet Community Hospital (2.6 miles south-east) and West Green House Agricultural Museum (1.2 miles west). Green spaces nearby include Hitches Hill and Dogmersfield Lake.
Towns and villages near Hartley Wintney
More services for Hartley Wintney
Surface by surface
Brickwork movement joints
Clay brickwork grows slightly over its life and moves with the weather. That movement goes into the joint, so the sealant in it must stay soft and stretchy.
Joints between dissimilar materials
Brick against render, concrete against metal, stone against timber: every change of material is a joint. A flexible sealant bridges the two so the movement is taken up.
Hartley Wintney questions
I let a flat near Winchfield station. Can you help?
Yes, landlords and agents are among the people we work for. You can ring 0345 464 0079 or send us an email with the details for a clear quote.
Can you do external mastic in Hartley Wintney?
Yes. Our work covers London and the South East, and Hartley Wintney is part of that. You can phone 0345 464 0079 or email us and tell us what needs doing, and we will give you a clear price.
Do you have insurance?
Yes. Full insurance covers our work.
What do you put in the joint?
We choose the sealant for the joint, not the other way round. Where it moves, gets wet or faces the weather makes a difference, and we’ll explain our choice.
How long does external mastic last?
There’s no fixed answer: sunny, exposed elevations and busy joints wear faster. Check them each year and reseal when they split or harden. Our work comes with a one-year guarantee.
Do you seal joints where cladding meets other materials?
Yes. Materials like render, brick, metal and uPVC all move differently, so the joint between them must be flexible. We choose one that suits both surfaces.
Is there any odour?
Sometimes, a little. Any smell clears as the sealant cures, and ventilation helps.
How long before the joint can be used?
Many sealants skin over quickly but take longer to cure fully. We will give you the cure time for the product we used before we leave.