Hertfordshire · England
External & façade joints in Shillington, Hertfordshire
External mastic in Shillington from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Moss and dirt in joints with no sealant left
- Old sealant gone brittle and cracked
- Rain getting behind render or cladding at a joint
Leave it or put it right?
Resealing a run of joints in one go is usually better than patching one at a time. They’ve weathered the same way and it means sorting access once. In a small place like Shillington, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
What you pay reflects the work, not a rough estimate. That is why we ask about the job first and agree the price before starting.
Why choose Mr Mastic in Shillington
- Over 20 years’ experience
- Neat joints and a tidy finish
- Arbo and Everbuild products
- A sealant colour to suit the surroundings
About our external mastic in Shillington
Joints in render and cladding are easy to overlook until a damp patch appears. We inspect them, agree which need doing and reseal with a weatherproof, flexible sealant in a matching colour. We work on brickwork movement joints, copings & trims and façade panels, and people most often call us about joints pointed up with cement by mistake and weathered mastic that no longer stretches.
Around Shillington, 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.
The work is guaranteed for twelve months. If something is not right with it in that time, tell us and we will put it right.
- Where
- Shillington (SG5)
- Wider area
- Hertfordshire
- Cover
- 12 months on all our work
- Quote
- A clear price before we start
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Keeping the joints in good condition
Once the sealant has cured, a few habits help it last:
- Check external joints each spring
- Avoid pressure-washing directly into sealant joints
- Fix overflowing gutters above sealed joints
- Don’t let climbing plants root in the sealant
Don’t let soil, plants or ivy build up against the new joints. Anything that holds water against the joint wears it out sooner.
If you can see gaps, plants or bare sections in a joint, have it checked. Early work is quicker and leaves a better finish.
How it works
You do not need to clear the whole room or building before we come, only the area right around the joints. Everything nearby is protected, and the work takes anything from a few hours to several days, depending on the building in most cases. For a village or hamlet like Shillington, the journey is planned in advance: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- 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.
Before we arrive
- Let us know about stairs, lifts or work at height
- Keep children and pets away from the work area
- Mention any leaks or damp you’ve noticed
Getting a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and add pictures by email if you can.
Read more
Different surfaces, different methods
Copings and trims
Coping and trim joints face rain and sun head on. We reseal them with an exterior sealant suited to the material.
Joints between dissimilar materials
Wherever two materials meet, they move differently. A flexible sealant bridges the two so neither cracks the other.
Shillington: your questions answered
Do you cover Shillington for external mastic?
Yes, Shillington is within the area we cover. Our work covers London and the South East. You can ring 0345 464 0079 or drop us an email and let us know what needs doing.
Do you cover smaller places like Shillington?
Yes. Shillington is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
How do I get a quote for external mastic in Shillington?
Size, access and the old material all affect the cost. Ask us for a quote and we’ll talk you through it.
Do you guarantee your work?
Yes. All our work carries our 12-month guarantee.
How often do external joints need resealing?
That depends on the wall, the weather and the movement. Look for splits, hardening or edges coming away and have them redone then.
Do you work at height?
It depends on the building. Send us photos and a rough idea of the height and we will confirm how they can be reached safely.
Are you insured?
Yes. We are fully insured, and we can confirm the details when we quote.
Does someone need to be in?
We need access to the joints, so we will agree that with you when we book. For inside work, that normally means someone being in.
Also near Shillington
Also in Shillington
Walls and rooflines in Shillington
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.
For landlords with property near Arlesey station, split movement joints are easy to miss on a rental until damp shows inside. For an older house near a landmark such as Church of All Saints, older walls, gutters and the joints where extensions meet them need a flexible sealant. For site and facilities teams at buildings such as Shillington Lower School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Shillington is about 5 miles north-west of Hitchin, in Hertfordshire. Jobs in Shillington get the same care as everywhere else we work: old sealant removed completely, careful preparation and a one-year guarantee. Across Hertfordshire, we cover 381 places, Shillington among them. You can also see our page for London, about 36 miles away.
We cover every part of the SG5 postcode area for external mastic and the streets around it. That includes homes and businesses on Hillfoot Road, New Walk and Church View Avenue and the roads around them. We also cover Hanscombe End (1 mile west), Apsley End (1 mile south-west), Pirton (2 miles south-east), Hexton (3 miles south-west) and Pegsdon (3 miles south). Within a short drive, we also cover Stevenage (10 miles south-east), Welwyn Garden City (15 miles south-east), Harpenden (12 miles south), Hitchin (5 miles south-east), Letchworth (6 miles east) and Letchworth Garden City (6 miles east).
Near you in Shillington
Around Shillington, our work takes us to homes and buildings near The Five Bells Public House and the streets around them. The nearest railway station is Arlesey station, roughly 4.6 miles north-east. Other landmarks nearby include Fairfield Hospital (4.9 miles east) and Stondon Motor Museum (2.1 miles east). Green spaces nearby include Cain Hill and Pegsdon Hills.
DIY sealant or a professional job?
If you are set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
If you’ve already had a go yourself, that’s fine. We cut it out and start again.
Work for landlords, hotels and businesses
Failed sealant is one of the commonest items on a check-out report. We can quote for more than one property at once.
For anyone letting property in or around Shillington, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs, and pictures by email help.
Honest limits
Before booking, it’s worth knowing the limits:
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Failed render or damaged cladding panels
- Cracked brickwork or render that needs a builder or plasterer
If you’re not sure, just ring 0345 464 0079 or drop us an email and we will give you a straight answer before you book.
Where we work in Shillington
- Joints between brick and frames
- Brickwork movement joints
- Copings & trims
- Façade panels
- Render & cladding joints
- Concrete & block