Hampshire · England
External Mastic in Newton Valence
External mastic for Newton Valence and the surrounding area: careful preparation, the right product and tidy work. Call for a quick quote.
- Failed sealant between panels on a façade
- Sealant pulling away from one side of the joint
- Damp patches traced to an open external joint
How to look after the new joints
Aftercare is simple, and it makes a real difference:
- Check external joints each spring
- Get split or bare joints resealed while the damage is small
- Ask before painting over external sealant
- Point out the joints to other trades
Keep the joints clear of soil, plants and climbing growth. Anything that holds water against the joint wears it out sooner.
Leaks behind façade panels and render often go unseen. When it finally shows inside, the joint may have been open for years, so it’s worth resealing at the first signs.
About our external mastic in Newton Valence
Low-level joints can normally be done from the ground. For joints higher up, give us some details of the building and we will confirm what access is needed. We work on concrete & block, render & cladding joints and brickwork movement joints, and people most often call us about joints with sealant missing in places and sealant pulling away from one side of the joint.
Older homes in small places like Newton Valence may be stone, brick or timber-framed, often with later extensions. The joints where those materials meet are the weak points, and they need the right sealant at the right depth.
There’s a 12-month guarantee on every job, whatever its size.
- Where
- Newton Valence (GU34)
- Region
- Hampshire
- Guarantee
- 12 months on all our work
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Common problems we fix in Newton Valence
Sometimes a movement joint was filled with mortar or a rigid filler by mistake. With the joint locked solid, the movement turns into cracks elsewhere in the wall.
Look out for any of the following:
- Rain getting behind render or cladding at a joint
- Joints with sealant missing in places
- Hard, crazed mastic that has stopped moving
- Failed sealant between panels on a façade
Letting a property close to Alton station? Then split movement joints are easy to miss on a rental until damp shows inside.
What to look for in a quote
- What the cure time is
- What happens if the job turns out different
- Who does the work, and how experienced they are
- How long the guarantee is
Quotes for external mastic in Newton Valence
The quote reflects the job in front of us. We look at:
- The size of the job
- When we can work, for business premises
- Access and height
- The old material and how stubborn it is
Combining jobs into one visit is generally more efficient than separate visits, so it’s worth mentioning everything you’d like done. We will give you a clear quote for the lot.
Helping us quote
What to tell us when you ask for a quote:
- If it’s domestic, commercial or a hotel
- The address or postcode of the job
- Any access issues, like height or stairs
- The problem you’ve noticed
We quote each job on its own. Just call 0345 464 0079 or email us with the details and send pictures if you have them.
What happens on the day
The work is kept neat and contained to the joints we are treating. The job normally takes a few hours to a few days, depending on the length of joint and the access, and we tell you how long to leave it before we go. Somewhere like Newton Valence 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 inspect the joints and agree which need resealing and how they’ll be reached.
- The old mastic and anything lodged in the joint is removed.
- The joint faces are cleaned and primed where the sealant needs it.
- Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
- The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.
Preparing for the visit
- Let us know about earlier repairs to the joints
- Tell us about any water getting in
- Mention any sign-in or site rules at work premises
Ask for a quote
Asking for a quote is easy: let us know the job and the location and its rough size. Photos by email help us understand the job, and we’ll take it from there.
Read more
What we cannot put right
We’ll always be straight with you, so here’s what sealant can’t fix:
- Failed render or damaged cladding panels
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Cracking across the wall rather than at a joint
If you’re not sure, just phone 0345 464 0079 or email us and we’ll give you a straight answer before booking.
What we seal
- Joints between brick and frames
- Brickwork movement joints
- Render & cladding joints
- Concrete & block
- Façade panels
- Copings & trims
Walls and rooflines in Newton Valence
The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Homes close to Church of St Mary include some older properties, and older walls, gutters and the joints where extensions meet them need a flexible sealant.
Newton Valence is about 4 miles south of Alton, in Hampshire. Jobs in Newton Valence get the same care as everywhere else we work: old sealant removed completely, careful preparation and a 12-month guarantee. Across Hampshire, we cover 683 places, and Newton Valence is one of them. We also work in Portsmouth, around 20 miles away.
Every address in GU34 is within our area for external mastic, from the main roads to the quietest streets. Other places close to Newton Valence include Selborne (1 mile east), Empshott (2 miles east), Lower Green (3 miles south-east), Hawkley (3 miles south-east) and Oakshott (3 miles south). Further out, we also cover Basingstoke (13 miles north-west), Winchester (15 miles west), Fleet (14 miles north-east), Horndean (13 miles south), Aldershot (14 miles north-east) and Alton (4 miles north).
Near you in Newton Valence
The nearest railway station is Alton station, roughly 4.2 miles north of the centre. Other landmarks nearby include Alton Community Hospital (3.4 miles north) and The Romany Museum (1.4 miles east). Open spaces near Newton Valence include Selborne Hill and Liss Riverside Railway Walk North.
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 Newton Valence can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
We don’t show prices on the website, because each job is priced on what it involves. Call for a quick quote and we will talk you through it.
Why us?
- More than 20 years in sealant work
- Anti-fungal sanitary silicone in wet areas
- You choose the colour before work begins
- Rated 4.9 stars on Google
Take a look at what affects the cost and what customers say.
Your questions about external mastic in Newton Valence
Is Newton Valence in your area for external mastic?
Yes. Our work covers London and the South East, and Newton Valence is part of that. You can call 0345 464 0079 or send us an email and tell us what needs doing, and we will give you a clear quote.
Will you come out to Newton Valence?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
What should I tell you?
Let us know what needs doing and where, plus pictures if you have them. We’ll ask anything else we need to know.
Can you seal over the old sealant?
No, it won’t last. It may look fine at first, but the new bead soon lifts. Removing the old sealant completely is the only lasting way.
How often do external joints need resealing?
It depends on the exposure, the movement and the product. Sealant is a maintenance item, so check the joints once a year and renew it when it starts to fail.
Which products do you use?
It depends on the joint: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. Brands we use include Arbo and Everbuild.
Is it OK to fill a movement joint with cement?
No. Cement or mortar can’t stretch, so the joint stops doing its job. If it has already been filled, we can normally cut it out and reseal it.
Will the old sealant be removed?
Yes. All of the old material is cut out and the joint cleaned before applying anything new.
Towns and villages near Newton Valence
More services for Newton Valence
Landlords, agents and businesses in Newton Valence
From a single let to a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. Several properties can be quoted together.