Buckinghamshire · England
Bedgrove External Mastic
External mastic across Bedgrove and nearby, with old sealant always removed completely and a 12-month guarantee.
- Movement joints filled with mortar instead of sealant
- Weathered mastic that no longer stretches
- Panel joints letting water in
How to look after the new joints
Once the sealant has cured, a few habits help it last:
- Make sure movement joints are not pointed over
- Have failed joints looked at early
- Fix overflowing gutters above sealed joints
- Show decorators and builders where the movement joints are
Do not let soil, plants or ivy build up against the new joints. Anything that holds water against the joint wears it out sooner.
Leave a failed movement joint and water keeps getting into the wall. That can lead to damp patches, staining and frost damage which cost more to put right than the joint.
External mastic in Bedgrove, done properly
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. Typical jobs include joints with sealant missing in places and plants rooting in failed movement joints, on brickwork movement joints, copings & trims and render & cladding joints.
Around Bedgrove, garages, outbuildings and extensions all add to the joints on the outside of a home. Gutter ends, garage door frames and the joints where an extension meets the house are typical spots for leaks.
There’s a 12-month guarantee on every job, whatever its size.
- Where
- Bedgrove (HP21, HP20, HP22)
- Wider area
- Buckinghamshire
- Guarantee
- A year, on every job
- Quote
- A clear price before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
External mastic in Bedgrove: local notes
Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
If you look after a building such as Bedgrove Infant School, its movement joints, gutters and trims need looking after like any other building’s. For an older house near a landmark such as Church of the Holy Spirit, old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Bedgrove is about 2 miles south-east of Aylesbury, in Buckinghamshire. We carry out external mastic for householders, landlords and businesses in Bedgrove and nearby. Our area takes in 263 places across Buckinghamshire, from the larger towns to small villages. Our Oxford page covers work nearby.
Our applicators cover all of the HP21, HP20 and HP22 postcode area for external mastic and the streets around it. External mastic is available to properties on Aplin Road, Regent Road and Eascote Road and the roads around them. Close by, we work in Turnfurlong (1 mile north-west), Broughton Crossing (1 mile north), Broughton (1 mile north), Burcott (2 miles north) and Bierton (2 miles north). Within a short drive, we also cover High Wycombe (12 miles south), Chesham (10 miles south-east), Amersham (12 miles south-east), Beaconsfield (15 miles south-east), Princes Risborough (6 miles south) and Haydon Hill (3 miles north-west).
Local landmarks in Bedgrove
In Bedgrove, that means homes and buildings near Stoke Mandeville Hospital Classes and The Grange School, among other places. The nearest railway station is Stoke Mandeville station, about 1.3 miles south of the centre. Well-known places in the area include Stoke Mandeville Hospital (0.9 miles south-west) and Friars Square (1.4 miles north-west). Not far away are Coombe Hill and Dancersend Nature Reserve.
Quotes for external mastic in Bedgrove
The quote reflects the job in front of us. We take into account:
- Whether the work is at height
- Mould in or behind the old joints
- Any working-time requirements on site
- The number and length of the joints
A few things move the cost up or down: how much old sealant there is and how stubborn it is, any mould to treat, and whether the work is at height. We take all of that into account in your quote.
What we need to know
What to tell us when you ask for a quote:
- Pictures of the joints, sent by email
- Whether it’s a home or a business
- How we’d reach the joints
- What the problem is, such as mould, gaps, leaks or cracking
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and add photos by email if you can.
What happens on the day
Every visit runs the same way: we check the joints, mask and protect the surrounding surfaces, carry out the job and clear up. Most jobs take a few hours to a few days, depending on the length of joint and the access. For a job in Bedgrove, 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.
- We cut out the failed sealant and rake out any dirt or growth.
- We clean both faces of the joint and prime them where the product calls for it.
- Backing rod goes in next, setting the depth and keeping the sealant off the back of the joint.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
Preparing for the visit
- On commercial sites, let us know about site rules
- Tell us if parking is tricky
- Let us know if you’ve seen damp or leaks
How to get a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we will explain how we’d tackle it. When it suits you, call 0345 464 0079 or drop us an email.
Advice
Towns and villages near Bedgrove
What else we do in Bedgrove
What happens if it’s left?
Pointing a movement joint with mortar might seem a neat fix, but it locks the joint solid. The movement then cracks the brickwork or render nearby. A flexible sealant over backing rod is what the joint needs. Homes in smaller places like Bedgrove 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.
What you pay reflects the work, not a rough estimate. That is why we ask a few questions first and agree the price before starting.
Why book with us
- Quality sealants from Arbo and Everbuild
- 180+ five-star Google reviews
- Colour picked to suit the job
- We’re fully insured
Take a look at how sealant jobs are priced or what customers say.
Landlords, agents and businesses in Bedgrove
Letting agents often deal with us directly. Tell us the address, the job and how access works.
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.
What we’re called out for in Bedgrove
Using the wrong sealant is another common reason. A stiff, general-purpose sealant can’t cope with a joint that moves a lot, and it tears off the sides.
People generally contact us after spotting something like this:
- Movement joints filled with mortar instead of sealant
- Old sealant gone brittle and cracked
- Plants rooting in failed movement joints
- Failed seals between different materials
Rented homes near Stoke Mandeville station change hands often, and failed wall and movement joints let damp in, so they’re worth checking between tenancies.
What to look for in a quote
- Whether all the old sealant comes out first
- What insurance they hold
- What happens if the job turns out different
- How long to leave it before use
Bedgrove: your questions answered
I let a flat near Stoke Mandeville station. Can you help?
Yes, rental work is part of what we do. Just ring 0345 464 0079 or send us an email and tell us about the property, and we will give you a clear quote.
Is Bedgrove in your area for external mastic?
Yes, Bedgrove is within the area we cover. We work across London and the South East. Just call 0345 464 0079 or send us an email with a few details of the job.
When is the sealant fully cured?
It depends on the product. Before we leave, we will tell you the cure time.
Can a movement joint be filled with mortar?
No. Mortar locks the joint solid, so the wall cracks somewhere else instead. Use a flexible sealant with backing rod.
Does someone need to be in?
That depends on where the joints are. Inside work needs someone to give us access, and for outside work we will agree access with you when we book.
Why is there a gap in my brick wall?
A movement joint is a planned break in the wall that absorbs expansion and shrinkage. It should be filled with flexible sealant, never mortar.
Will you leave a mess?
Tidy work is part of the job. We protect what’s around the joints, and the area is left clean when we finish.
Where do you work from?
We’re based in Crawley, and we cover South East England, London and all of Scotland.
What we can’t put right
To be straight with you, some problems need a different trade:
- Cracks in the bricks or render themselves, away from the joints
- Subsidence or other structural problems
- Cutting new joints into brickwork, which is building work rather than sealant work
If you’re not sure, just ring 0345 464 0079 or drop us an email and we will give you a straight answer.
Where we work in Bedgrove
- Façade panels
- Render & cladding joints
- Joints between brick and frames
- Concrete & block
- Copings & trims
- Brickwork movement joints