Hertfordshire · England
External Mastic in Standon
Movement joints in Standon need attention? We remove the old material, prepare the joints and seal them properly, and the work is guaranteed for a year.
- Joints where the bead has come unstuck
- Movement joints with cracked, split or missing sealant
- Leaking joints around cladding and façade panels
What we do, step by step
A visit follows a simple pattern: we look at the joints together, mask and protect the surrounding surfaces, do the work and clear up. It normally takes anything from a few hours to several days, depending on the building. Somewhere like Standon needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- We start by walking round the building and agreeing the joints and the access.
- Every bit of old sealant and any mortar or debris is cut out.
- The faces are brushed clean and primed where the product requires it.
- We fit closed-cell backing rod to control the depth.
- We apply the sealant, tool it and check the whole run.
Before we arrive
- Let us know if you’ve seen damp or leaks
- Clear items away from the joints we are working on
- Mention if the joints have been sealed before
Ask for a quote
For a quick quote, get us on the phone, or send an email if you’d rather. Describe what needs sealing and we will talk you through the work.
Related advice
External mastic in Standon
Movement joints let brickwork, render and cladding expand and shrink without cracking. Its sealant has to flex with the building, season after season, so once it splits or hardens, the joint stops working and water gets in. We work on joints between brick and frames, render & cladding joints and copings & trims, and the jobs we see most are rain getting behind render or cladding at a joint and brick movement joints where the sealant has split.
Somewhere as small as Standon, homes and farm buildings often face open ground, where walls and rooflines take the weather head on. Gutter joints and wall joints there need a sealant that can flex and stay put.
We guarantee the work for a year. If something isn’t right with it in that time, tell us and we will put it right.
- Where
- Standon (SG11)
- Region
- Hertfordshire
- Cover
- 12 months on all our work
- Price
- A clear price before work begins
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
FAQs for Standon
Do you cover smaller places like Standon?
Yes, we do. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Is external mastic in Standon guaranteed?
All our work, in Standon and everywhere else, comes with a 12-month guarantee. We’re fully insured, and an ARBOMaster approved applicator.
Why do you put foam in the joint first?
Backing rod goes into deeper joints as a matter of course. It controls the depth and stops the sealant bonding to the back so the bead can stretch.
Do you seal joints where cladding meets other materials?
Yes. Different materials move at different rates, so the joint between them must be flexible. We choose one that suits both surfaces.
Do you remove the old sealant?
Always. Sealing over old sealant is the main reason resealing fails early, and it’s something we never do.
Can you reach joints on upper floors?
Each building is different. Send us photos and a rough idea of the height.
Can you quote for more than one area?
Yes. Tell us about everything you’d like done and we will quote it together.
How much does external mastic cost in Standon?
Size, access and the old material all affect the cost. Call for a quick quote.
Can I do it myself?
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it doesn’t work out, we can still put it right.
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
What we’re called out for in Standon
Some movement joints have been pointed up with mortar. With the joint locked solid, the movement turns into cracks elsewhere in the wall.
These are the problems we’re asked about most:
- Gaps where render, brick and frames meet
- Sealant that has lost its bond to the brick or render
- Damp patches traced to an open external joint
- Joints with sealant missing in places
Homes close to Church of St Mary include some older properties, and old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Comparing quotes
- Whether all the old sealant comes out first
- How much experience the applicator has
- Whether the sealant suits the joint
- Which colour the sealant will be
Looking after it afterwards
A little care helps the new joints last. Our advice:
- Check the sealant is paintable before painting near it
- Make sure movement joints are not pointed over
- Keep water from gutters off the wall
- Check external joints each spring
Keep the joints clear of soil, plants and climbing growth. Damp material against the sealant shortens its life.
Once a joint can’t move, the wall finds another way, generally as cracking in the brickwork or render nearby. Catch it early and you reduce the risk.
How the job changes by surface
Render joints
The face of render can be soft, so a low-modulus sealant is kinder to the joint edges. Priming is done where the sealant calls for it.
Copings and trims
A failed coping joint lets water into the top of the wall. Resealing them is a small job that protects a lot.
Why it’s worth doing now in Standon
Resealing a run of joints in one go is generally better than patching one at a time. Joints of the same age tend to fail together, and access only has to be arranged once. Older cottages and farmhouses around Standon can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
Leaving a failed joint usually makes the job bigger, not smaller. If you’re not sure whether it needs doing, call 0345 464 0079 or drop us an email for an honest opinion and a quote.
What you get with us
- A sealant colour to suit the surroundings
- An ARBOMaster approved applicator
- A 12-month guarantee on all work
- Old sealant always removed completely
Read our cost guide or customer reviews.
Also near Standon
Also in Standon
Quotes for external mastic in Standon
You’ll get a clear quote before work begins. It takes into account:
- Whether there’s mould to deal with
- Whether old sealant or filler has to be cut out
- How many rooms, windows or areas are involved
- Any working-time requirements on site
No two jobs are quite the same, so we quote each one individually. Size, access and the product the joint needs all play a part, and we’ll explain the quote if you ask.
Helping us quote
To help us quote quickly, let us know:
- Where the job is, and your postcode
- Any access issues, like height or stairs
- If someone has resealed it before
- What the problem is, such as mould, gaps, leaks or cracking
For a quote, call 0345 464 0079 or email us with the location and a short description of the problem. You’ll have a clear quote before work begins.
Outside joints around Standon
London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. Historic houses like Much Hadham Palace (about 2.7 miles south-east) are a reminder that the area around Standon has older buildings as well as new. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material.
If you look after a building such as Roger De Clare First CofE School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Standon is about 5 miles north-east of Ware, in Hertfordshire. Whether you are in the middle of Standon or further out, external mastic is available for homes and businesses alike. We cover 381 towns and villages across Hertfordshire, from the larger towns to small villages. Chelmsford is on our list too, around 22 miles away.
Our applicators cover all of the SG11 postcode area for external mastic and the streets around it. Local streets include High Street, Stortford Road and Town Farm Crescent, and we cover them all. Other places close to Standon include Puckeridge (1 mile north-west), Bromley (1 mile south-east), Colliers End (2 miles south-west), Barwick (2 miles south-west) and Hadham Ford (2 miles east). Further out, we also cover Stevenage (9 miles west), Bishop's Stortford (6 miles east), Welwyn Garden City (11 miles south-west), Hitchin (14 miles west), Hoddesdon (9 miles south) and Cheshunt (12 miles south).
Local landmarks in Standon
Locally, jobs take us to homes and businesses close to Ralph Sadleir Middle School and The Bell Public House, among other places. Nearby you’ll also find Moated mound (3.5 miles east).