Hampshire · England
External Mastic in Knights Enham
Specialist external mastic for Knights Enham: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Brick movement joints where the sealant has split
- Weeds or debris growing in open joints
- Failed sealant between panels on a façade
Walls and rooflines in Knights Enham
Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you let a flat or house near Andover station, outside joints that have cracked can let damp into a rental, so check them between lets. Schools such as Roman Way Primary School are buildings too, and larger buildings have long runs of movement joint that eventually need resealing. For an older house near a landmark such as Church of St Michael and All Angels, the joints between older walls, newer extensions and the roofline need a sealant that can move.
Knights Enham is about 1 mile north of Andover, in Hampshire. We carry out external mastic for homes and businesses in Knights Enham and nearby. Across Hampshire, we cover 683 places, and Knights Enham is one of them. There’s also a page for Southampton, roughly 22 miles from Knights Enham.
Jobs for external mastic in SP10 works the same way as everywhere else we cover. External mastic is available to properties on Manor Copse and Newbury Road. We also cover East Anton (1 mile south-east), Enham Alamein (1 mile north), Smannell (1 mile north-east), Upper Enham (1 mile north) and Finkley (1 mile east). Larger places within reach include Winchester (14 miles south-east), Hyde (13 miles south-east), Tidworth (8 miles west), Weeke (13 miles south-east), Kempshott (15 miles east) and Stanmore (14 miles south-east).
Local landmarks in Knights Enham
Around Knights Enham, our work takes us to homes and buildings near Harrow Way Community School. Knights Enham’s nearest station is Andover station, roughly 1.5 miles south-west of the centre. Other landmarks nearby include Finkley Down Farm Museum (1.2 miles south-east) and Andover War Memorial Hospital (1.3 miles south-west). Open spaces near Knights Enham include Mill Lake and Anton Lakes.
External mastic in Knights Enham, done properly
Short cuts in external joints show up within a season or two. New sealant over old, joints packed with mortar and beads with no backing all tend to fail early. We strip the joint back and start again. We’re often asked to deal with sealant pulling away from one side of the joint and damp patches traced to an open external joint, across render & cladding joints, concrete & block and joints between brick and frames.
Somewhere as small as Knights Enham, homes and farm buildings often face open ground, so walls and rooflines take the full force of wind and rain. Joints on those walls need a sealant that moves with the building and stays in place.
All our work comes with our one-year guarantee, wherever you are in Hampshire.
- Location
- Knights Enham (SP10)
- Region
- Hampshire
- Guarantee
- 12 months on all our work
- Quotes
- A clear price before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
The process
Before we leave, we go over the finished joints with you. The work normally takes a few hours to a few days, depending on the length of joint and the access, depending on how much there is to do. Somewhere like Knights Enham needs a little journey planning: 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 look at every joint and agree a colour to suit the wall.
- Failed sealant is removed back to clean, sound faces.
- Backing rod goes in so the sealant can stretch between the two faces.
- Primer is applied wherever the sealant needs it.
- We gun in low-modulus sealant and tool it neatly.
How to prepare
- Try not to wet indoor joints just before the visit
- Mention any tricky access
- Keep children and pets away from the work area
Get a quote
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we will explain what’s involved and give you a clear quote.
Related advice
Leave it or put it right?
A properly done movement joint is an even line in a colour that suits the wall. A rushed bead with no backing looks untidy and doesn’t last. In a small place like Knights Enham, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
There are no prices on our website, because each job is priced on what it involves. For a quick quote, please ring 0345 464 0079 or send us an email.
Why Knights Enham customers choose us
- Colour agreed with you before work begins
- Homes, businesses and hotels
- White, clear, grey or another colour, product permitting
- Arbo and Everbuild products
Take a look at our cost guide and what customers say.
What affects the cost of external mastic
The quote reflects the job in front of us. We take into account:
- The number and length of the joints
- How many rooms, windows or areas are involved
- Any working-time requirements on site
- The old material and how stubborn it is
What it costs depends on how much there is to do, how much old material has to come out and access to the work. You’ll have a clear quote before any work starts.
What to tell us for a quote
Photos help, but a description is a good start. Try to tell us:
- The address or postcode of the job
- How many joints, rooms or windows are involved
- What the problem is, such as mould, gaps, leaks or cracking
- Access, such as stairs, a lift or height
If you are in Knights Enham and need external mastic, call 0345 464 0079 or drop us an email. Tell us what the problem is and where, and we will agree the price before any work begins.
When it isn’t the sealant
New sealant cannot fix everything, and we’d rather say so up front. Sealant won’t put right:
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Loose or hollow render, which needs re-rendering
- Movement that’s more than a sealant joint can take
If you are not sure, just call 0345 464 0079 or drop us an email and we will give you a straight answer before you book.
Joints and surfaces we work on
- Joints between brick and frames
- Copings & trims
- Render & cladding joints
- Concrete & block
- Façade panels
- Brickwork movement joints
Should I try it myself first?
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and getting the depth right matters as much as the look.
Places near Knights Enham
More services for Knights Enham
Surface by surface
Joints between dissimilar materials
Each side of the joint may need its own preparation. Both surfaces are cleaned and primed as the product requires.
Render joints
The face of render can be soft, so a low-modulus sealant is kinder to the joint edges. We prime where the product needs it.
Your questions about external mastic in Knights Enham
Can you do external mastic in Knights Enham?
Yes. We work across London and the South East, and Knights Enham is part of that. You can ring 0345 464 0079 or send us an email and tell us what needs doing.
Can you help a landlord with a rental near Andover station?
Yes, we work for landlords and agents. You can ring 0345 464 0079 or email us with the address and a few details, and we will give you a fixed price before any work starts.
Do the sealants smell?
It depends on the product. Some products have a noticeable smell, others very little.
Do you use backing rod?
That is backing rod, a closed-cell foam. It keeps the sealant at the right depth and bonded to the sides only.
Do you work for hotels and businesses?
Yes, regularly. We can plan bigger jobs in stages to suit the site.
Should I point up the gap in my brickwork?
No. Mortar locks the joint solid, so the movement cracks the wall elsewhere. It needs a flexible sealant over backing rod.
Can you seal over the old sealant?
No, and we never do. It can look neat for a few weeks, but the new layer lifts away from the old one. The old sealant has to come out completely.
Is it messy?
No. We protect the surfaces around the joints, and we tidy up before we go.
Keeping the joints in good condition
To keep the joints looking good and working properly:
- Never let anyone fill a movement joint with mortar
- Do not let climbing plants root in the sealant
- Check the sealant is paintable before painting near it
- Point out the joints to other trades
Keep the joints clear of soil, plants and climbing growth. Damp material against the sealant shortens its life.
Leave a failed movement joint and water keeps getting into the wall. Over time it can mean damp inside, stained render or frost-damaged brick which cost more to put right than the joint.