Hampshire · England
Mapledurwell External Mastic
External mastic across Mapledurwell and nearby, with old sealant always removed completely.
- Sealant pulling away from one side of the joint
- Joints pointed up with cement by mistake
- Failed seals between different materials
About our external mastic in Mapledurwell
A movement joint is only as good as its depth. Closed-cell backing rod sets the depth and stops the sealant sticking to the back, so it bonds to the two sides only and can stretch. We work on concrete & block, façade panels and copings & trims, and common reasons people get in touch are weeds or debris growing in open joints and damp patches traced to an open external joint.
In a village or hamlet like Mapledurwell, older cottages and farm buildings often stand in the open, so walls and rooflines take the full force of wind and rain. Gutter joints and wall joints there need a sealant that can flex and stay put.
You are covered for a year from the day we finish. If there’s a problem with it, please ring 0345 464 0079 or drop us an email.
- Where
- Mapledurwell (RG27, RG25)
- Region
- Hampshire
- Guarantee
- 12 months on all our work
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Why act early in Mapledurwell
Mortar or ordinary filler might look like a quick way to close an open joint, but it stops the joint moving. The wall then cracks somewhere else. The correct repair is a flexible sealant with the right backing. Older cottages and farmhouses around Mapledurwell can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
Every job is a little different, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all play a part.
What you get with us
- Domestic, commercial and hotel work
- Approved under the ARBOMaster scheme
- We are fully insured
- 180+ five-star Google reviews
See what affects the cost and customer reviews.
Landlords, agents and businesses in Mapledurwell
For anyone letting property in or around Mapledurwell, several properties can be quoted together. Just tell us the addresses and what each one needs.
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
What external mastic looks like in Mapledurwell
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. With historic houses such as The Vyne (about 4.4 miles north-west) nearby, there’s older building stock in the area around Mapledurwell as well as newer homes. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth.
If you live in an older home near Church of St. Mary, an extension built onto an older house moves differently, and the joint between them takes the strain.
Mapledurwell is about 4 miles east of Basingstoke, in Hampshire. Homes, rented property, offices and hotels in Mapledurwell is covered for external mastic. Every job comes with our 12-month guarantee. Across Hampshire, we cover 683 places, Mapledurwell among them. You can also see our page for Reading, roughly 13 miles from Mapledurwell.
Postcode districts we cover here for external mastic: RG27 and RG25. Whether your property is on Canal Reach, Greywell Road and Frog Lane or a nearby road, our applicators can take on the job. Neighbouring places we cover for external mastic include Andwell (1 mile north), Water End (1 mile north), Old Basing (1 mile west), Lychpit (2 miles west) and Chineham (2 miles north-west). Within a short drive, we also cover Basingstoke (4 miles west), Farnborough (11 miles east), Fleet (8 miles east), Aldershot (11 miles east), Alton (8 miles south) and Yateley (9 miles north-east).
What’s near Mapledurwell
Mapledurwell’s nearest station is Hook station, about 2.6 miles north-east of the centre. Nearby you’ll also find Basing House (1.6 miles west) and Basingstoke and North Hampshire Hospital (4.2 miles west). Not far away are The Mill Field and Dogmersfield Lake.
What we do, step by step
On the day, there’s very little for you to do. Show us the job and we’ll take it from there. The job generally takes a few hours for a handful of joints, longer for a whole elevation, including the tidy-up. Somewhere like Mapledurwell 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 look at every joint and agree a colour to suit the wall.
- Failed sealant is removed back to clean, sound faces.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- Primer is applied wherever the sealant needs it.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Before we arrive
- Mention any leaks or damp you’ve noticed
- For indoor joints, keep the area dry beforehand if you can
- On commercial sites, let us know about site rules
How to get a quote
We quote each job on its own, so start by telling us what you need. Simply phone 0345 464 0079 or send us an email and describe the job and send photos if you have them.
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Places near Mapledurwell
What else we do in Mapledurwell
Your questions about external mastic in Mapledurwell
Do you cover smaller places like Mapledurwell?
Yes, Mapledurwell is covered. We work across London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Do you cover Mapledurwell for external mastic?
Yes. Our work covers London and the South East, and Mapledurwell is part of that. You can call 0345 464 0079 or email us and tell us what needs doing.
Should I try DIY first?
Sometimes. Preparation is everything: all the old sealant out, and a clean, dry joint. If it does not work out, we can redo it.
Can you reach joints on upper floors?
It depends on the height and the site. Low-level joints are straightforward; for higher work, tell us about the building and we will confirm what’s needed.
Do you take out the old sealant first?
Yes. Sealing over the old bead is the commonest cause of early failure, and it’s something we never do.
When will the joints need doing again?
There’s no fixed answer: joints on exposed walls or with a lot of movement age sooner. Check them each year and reseal when they split or harden. Our work comes with a one-year guarantee.
Can you seal over the old sealant?
No. New silicone will not bond to old silicone, and anything trapped underneath, including mould and water, stays there. It all has to come out first.
What do you put in the joint?
Each joint gets the product that suits it. Where it moves, gets wet or faces the weather makes a difference, and we’ll explain our choice.
What we can’t put right
Honest advice matters more to us than a booking, so here’s what new sealant will not do:
- Loose or hollow render, which needs re-rendering
- Cracking across the wall rather than at a joint
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
If you’re not sure, just call 0345 464 0079 or email us and we’ll give you a straight answer.
Surfaces we seal
- Joints between brick and frames
- Façade panels
- Copings & trims
- Brickwork movement joints
- Render & cladding joints
- Concrete & block
DIY sealant or a professional job?
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
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.
When to call us in Mapledurwell
Using the wrong sealant is another common reason. A stiff, general-purpose sealant can’t cope with a joint that moves a lot, so it pulls away from the edges.
If you can see any of these, it’s time to have the joints looked at:
- Damp patches traced to an open external joint
- Joints where the bead has come unstuck
- Panel joints letting water in
- Joints with sealant missing in places
For landlords with property near Hook station, split movement joints are easy to miss on a rental until damp shows inside.
What your quote should include
- Whether VAT is included
- The length of the guarantee
- Which sealant they’ll use, and why
- Which colour the sealant will be
Different surfaces, different methods
Render joints
Cracks along render joints let water in behind the coat. A sound joint keeps the render dry behind and protects the render itself.
Concrete and blockwork
The face of concrete or block is often dusty, so preparation is key. A primer goes on where the product requires one before the bead.