Hertfordshire · England
External & façade joints in Piccotts End, Hertfordshire
Movement joints in Piccotts End need attention? We cut out the old, prepare the joints and apply the right sealant, with a one-year guarantee.
- Failed sealant between panels on a façade
- Brick movement joints where the sealant has split
- Weathered mastic that no longer stretches
Work for landlords, hotels and businesses
Whether it’s one flat or a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a 12-month guarantee.
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. We can quote for more than one property at once.
External mastic in Piccotts End
Getting the depth right is half the job. Backing rod controls how deep the sealant goes and keeps it off the back of the joint, so it bonds to the two sides only and can stretch. We work on render & cladding joints, concrete & block and joints between brick and frames, and people most often call us about sealant that has lost its bond to the brick or render and rigid filler in a joint that should flex.
Around Piccotts End, older buildings can be stone, brick or timber-framed, many with extensions added later. The joints where those materials meet are the weak points.
All our work is covered by our 12-month guarantee, wherever you are in Hertfordshire.
- Where
- Piccotts End (HP1, HP2)
- Wider area
- Hertfordshire
- Guarantee
- A year, on every job
- Price
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Should I try it myself first?
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it doesn’t work out, we can still put it right.
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is.
Aftercare tips
So the new joints stay in good condition:
- Fix overflowing gutters above sealed joints
- Show decorators and builders where the movement joints are
- Leave the joints unpainted unless we have said otherwise
- Avoid pressure-washing directly into sealant joints
Keep pressure washers away from the sealant. A strong jet can damage the edges of the bead.
Gaps, plants or missing sealant in a joint are worth getting looked at. Early work is quicker and leaves a better finish.
Nearby places to Piccotts End
What else we do in Piccotts End
What happens if it’s left?
Done well, a resealed joint is a neat, straight line that suits the wall. A rushed bead with no backing looks untidy and doesn’t last so it’s worth doing right. Around Piccotts End, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
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’ll know the price before we begin.
Why choose Mr Mastic in Piccotts End
- Colour picked to suit the job
- We leave the area clean and tidy
- Any old sealant cut out fully, not covered over
- We agree the colour with you first
Take a look at what affects the cost or customer reviews.
What we are called out for in Piccotts End
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 cannot stretch and rips as the joint opens.
Keep an eye out for these signs:
- Gaps where render, brick and frames meet
- Brick movement joints where the sealant has split
- Movement joints filled with mortar instead of sealant
- Leaking joints around cladding and façade panels
If you let a flat or house near Hemel Hempstead station, split movement joints are easy to miss on a rental until damp shows inside.
What your quote should include
- Which colour the sealant will be
- What the cure time is
- Whether the sealant suits the joint
- What insurance they hold
Your questions about external mastic in Piccotts End
Do you cover smaller places like Piccotts End?
Yes. Piccotts End is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Is it worth replacing old sealant in an older home in Piccotts End?
In most cases, yes, if it hasn’t been done for a while. Sealant is a maintenance item: how long it lasts depends on use, cleaning and exposure.
Is it OK to fill a movement joint with cement?
No, not where the gap is a movement joint. Filling it with mortar defeats its purpose. We will reseal it with a flexible sealant.
Why is there a gap in my brick wall?
Brickwork, render and cladding all move a little, so long walls have planned gaps to take that movement. The gap is sealed with a flexible sealant over backing rod.
Do you guarantee your work?
Yes. Each job is guaranteed for twelve months.
Do you work for hotels and businesses?
Yes, regularly. Larger jobs can be planned room by room or area by area.
Can you seal joints between two different materials?
Yes. Materials like render, brick, metal and uPVC all move differently, so a flexible sealant is needed where they meet. We choose one that suits both surfaces.
Can I do it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. Most DIY failures come from sealing over old material, wet joints or too much sealant.
What the job involves on each surface
Copings and trims
Coping and trim joints face rain and sun head on. Each is resealed with a weatherproof, flexible sealant.
Brickwork movement joints
Clay brickwork grows slightly over its life and moves with the weather. The movement joint takes that up, so its sealant has to stay flexible.
Piccotts End buildings and the weather
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. Piccotts End is part of Hemel Hempstead, 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.
In the older streets around St Mary's Church, the joints between older walls, newer extensions and the roofline need a sealant that can move. Schools such as Galley Hill Primary School and Nursery are buildings too, and movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Piccotts End is about 1 mile north-west of Hemel Hempstead, in Hertfordshire. If you need external mastic in Piccotts End, please ring 0345 464 0079 or send us an email for a quick quote. We’re based in Crawley and cover Hertfordshire. Across Hertfordshire, we cover 381 places, Piccotts End among them. We also work in London, about 25 miles from Piccotts End.
All of HP1 and HP2 is covered for external mastic. Whether your property is on Piccotts End Road, Leighton Buzzard Road and Riverbank or a nearby road, we can help. Other places close to Piccotts End include Gadebridge (1 mile south-west), Highfield (1 mile south-east), Warner's End (1 mile south-west), Grovehill (1 mile south) and Woodhall Farm (1 mile south). We also work in nearby towns such as Watford (8 miles south-east), St Albans (6 miles east), Welwyn Garden City (12 miles east), Harpenden (6 miles north-east), Hitchin (15 miles north-east) and Hatfield (11 miles east).
Local landmarks in Piccotts End
Typical jobs here are in homes near The Old Bell pub, Laureate Academy and Gadebridge Park, among other places. For rail, the closest station is Hemel Hempstead station, roughly 2 miles south of the centre. A little further out are Redbourn Museum (3.8 miles north-east) and Hemel Hempstead Hospital (1.4 miles south). The countryside around Piccotts End includes Long Deans.
How it works
A visit follows a simple pattern: we look at the joints together, mask and protect the surrounding surfaces, carry out the job and clear up. Most jobs take a few hours for a handful of joints, longer for a whole elevation. For a village or hamlet like Piccotts End, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- 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.
- Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
- The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.
Getting ready for the visit
- For indoor joints, keep the area dry beforehand if you can
- Let us know about earlier repairs to the joints
- Keep children and pets away from the work area
How to get a quote
There’s no standard price list, because every job is different. Instead, we give you a clear quote for your job. To get started, ring 0345 464 0079 or drop us an email.