Hampshire · England
Andover Down External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for Andover Down, backed by a one-year guarantee. Ask us for a quote.
- Sealant pulling away from one side of the joint
- Gaps where render, brick and frames meet
- Panel joints letting water in
Questions from Andover Down
Can you do external mastic in Andover Down?
Yes. We work across London and the South East, and Andover Down is part of that. You can call 0345 464 0079 or email us and tell us what needs doing, and we’ll send you a clear quote.
Is Andover Down within the area you cover?
Yes. Andover Down is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
I rent my home. Can I book you?
Of course. Ask your landlord first, and we can send them the quote if that helps.
What does external mastic cost?
Size, access and the old material all affect the cost. Ask us for a quote.
How long does external mastic last?
It varies with how exposed the wall is and how much the joint moves. Signs to watch for are cracking, hardening and gaps at the edges.
Do you take out the old sealant first?
Yes. Sealing over old sealant is the main reason resealing fails early, so we never do it.
What colours does the sealant come in?
We choose a sealant colour to suit the brick, stone or render. There’s a wide choice of exterior colours.
Do you work for letting agents?
Yes. We work for homeowners, landlords, letting agents, businesses and hotels.
External mastic for homes and businesses in Andover Down
Many failed façade joints only get noticed once there’s a stain or a damp patch inside. We inspect them, agree which need doing and reseal with a weatherproof, flexible sealant in a colour to suit. We work on façade panels, joints between brick and frames and brickwork movement joints, and common reasons people get in touch are joints pointed up with cement by mistake and joints where the bead has come unstuck.
In a village or hamlet like Andover Down, 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.
All of our work is guaranteed for twelve months, and the guarantee is the same wherever you are.
- Place
- Andover Down (SP11)
- Region
- Hampshire
- Guarantee
- One year on every job
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Walls and rooflines in Andover Down
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Managing a site like Pilgrims' Cross CofE Aided Primary School? Then its movement joints, gutters and trims need looking after like any other building’s. Letting a property close to Andover station? Then failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Andover Down is about 2 miles east of Andover, in Hampshire. Andover Down gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a one-year guarantee. Our Hampshire coverage runs to 683 places, and Andover Down is one of them. There’s also a page for Southampton, about 20 miles away.
Our applicators cover all of SP11 for external mastic and the streets around it. If you need external mastic at a property on London Road and The Middleway or a nearby road, our applicators can take on the job. We also cover the places around Andover Down: Picket Piece (1 mile north), Finkley Down (1 mile north-west), Picket Twenty (1 mile south-west), Finkley (1 mile north-west) and East Anton (2 miles north-west). Further out, we also cover Basingstoke (15 miles east), Winchester (12 miles south-east), Romsey (15 miles south), Hyde (11 miles south-east), Tidworth (10 miles west) and Weeke (11 miles south-east).
Around Andover Down
Locally, jobs take us to homes and businesses close to Winton Community Academy and Winton Community Academy, among other places. Andover Down’s nearest station is Andover station, about 2.6 miles west. Well-known places in the area include Andover War Memorial Hospital (2.6 miles west) and Finkley Down Farm Museum (1 mile north-west). For a walk, there’s Mill Lake and Anton Lakes.
What happens on the day
Every visit runs the same way: we check the joints, protect the area around them, do the work and clear up. Most jobs take a few hours to a few days, depending on the length of joint and the access. In a small place like Andover Down, access is normally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- 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.
- Backing rod sized to the joint goes in to set the depth.
- We apply the sealant, tool it and check the whole run.
Preparing for the visit
- Tell us about any water getting in
- Plan for the work area to be out of bounds to pets and children
- Where the joints are inside, avoid wetting them before we arrive
Get a quote
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is.
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Towns and villages near Andover Down
What else we do in Andover Down
Why deal with it now?
Low-modulus sealants stretch easily, so they put less strain on the joint edges. That matters on brick, render and concrete, which can be weaker at the face. A stiffer product can damage the joint edge as it fails. Older cottages and farmhouses around Andover Down can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Rather than a set price list, we price the job in front of us: how many joints, what’s in them now and how we reach them. You will know the price before we begin.
Why us?
- We never seal over old sealant
- 4.9 on Google from 180+ five-star reviews
- White, clear, grey or another colour, product permitting
- We leave the area clean and tidy
Quotes for external mastic in Andover Down
We quote each job individually. This is what makes a difference:
- Which sealant suits the joint
- The number of rooms or windows
- Access and height
- Any mould that needs treating
Doing several joints on one visit generally makes better use of the time than several visits, so tell us about everything that needs sealing. We will give you a clear quote for the lot.
What to tell us for a quote
Photos help, but a description is a good start. Try to tell us:
- If someone has resealed it before
- Where the property is
- What the problem is, such as mould, gaps, leaks or cracking
- If it’s domestic, commercial or a hotel
There’s no standard price list, as no two jobs are quite the same. Instead, we send you a clear quote for your job. To arrange one, ring 0345 464 0079 or email us.
Different surfaces, different methods
Cladding and façade panels
Panels heat up and cool down quickly, so the joint sealant has to cope with frequent movement. The sealant is chosen with that in mind.
Joints between dissimilar materials
Different materials may need different primers. Both surfaces are cleaned and primed as the product requires.
Landlord and commercial work in Andover Down
If you manage several properties in or around Andover Down, jobs at different addresses can be quoted together. Send us the addresses and the work at each, and pictures by email help.
We work for landlords and agents as well as householders. Sealant work between tenants keeps a property looking cared for.
How to look after the new joints
No joint lasts for ever, but care makes a real difference. A few tips:
- Keep water from gutters off the wall
- Make sure movement joints aren’t pointed over
- Show decorators and builders where the movement joints are
- Check external joints each spring
Make sure anyone working on the wall later knows where the movement joints are. They must stay as flexible joints, never rendered or pointed over.
Leaks behind façade panels and render often go unseen. When it finally shows inside, the joint may have been open for years so early resealing is worth it.
DIY sealant or a professional job?
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.