Hampshire · England
External Mastic in Up Nately
Specialist external mastic for Up Nately: careful preparation, the right product and tidy work. Call for a quick quote.
- Sealant pulling away from one side of the joint
- Failed seals between different materials
- Rain getting behind render or cladding at a joint
Different surfaces, different methods
Copings and trims
Joints in copings, parapets and trims are exposed to the worst of the weather. We reseal them with an exterior sealant suited to the material.
Concrete and blockwork
Wide joints in concrete need the depth controlling carefully. We size the backing rod to the gap so the sealant is not too deep.
External mastic in Up Nately
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. We work on render & cladding joints, façade panels and copings & trims, and people most often call us about failed sealant between panels on a façade and weathered mastic that no longer stretches.
External sealant needs dry, clean surfaces, so work around Up Nately is planned for dry weather. Let us know about access to every wall, plus any garages or outbuildings.
All our work comes with a 12-month guarantee.
- Place
- Up Nately (RG27)
- Wider area
- Hampshire
- Cover
- One year on every job
- Price
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
What happens on the day
Before we leave, we go over the finished joints with you. The work normally takes a few hours for a handful of joints, longer for a whole elevation, depending on how much there is to do. For a village or hamlet like Up Nately, the journey is planned in advance: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- Each joint is checked and the colour of the new sealant agreed.
- We take out the old sealant until the faces are sound.
- 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
- Let us know about earlier repairs to the joints
- Keep children and pets away from the work area
- Clear items away from the joints we’re working on
Getting a quote
Asking for a quote is easy: let us know the job and the location. A few photos by email make the job easier to understand.
Advice
Up Nately questions
I let a flat near Hook station. Can you help?
Yes, we work for landlords and agents. Just ring 0345 464 0079 or email us and tell us about the property, and we’ll send you a clear quote.
Will you come out to Up Nately?
Yes, smaller places are covered as well as towns. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Is the work guaranteed?
Yes, for a year. If there’s a problem with our work in that time, tell us and we’ll put it right.
Can I add another job to the visit?
Yes, and it often makes sense. Doing several areas at once is normally more efficient, so mention them when you ask for a quote.
Do you have insurance?
Yes. Mr Mastic is fully insured, and we’ve been doing sealant work for more than 20 years.
Do you do commercial work?
Yes. We work in offices, washrooms, hotels and other commercial premises, as well as homes. Working times can be discussed when we quote.
Why is there a gap in my brick wall?
Walls move with heat, cold and moisture, and planned joints take up that movement. The gap is sealed with a flexible sealant over backing rod.
When is the sealant fully cured?
It depends on the product and the temperature. Before we leave, we’ll tell you the cure time.
Quotes for external mastic in Up Nately
Some jobs are bigger than they look, and some smaller. What affects the quote:
- Whether old sealant or filler has to be cut out
- The type of sealant required
- Working hours on commercial sites
- Any mould that needs treating
Homes and businesses are quoted the same way: the amount of work, how we reach it and what it needs, along with when we can work on site. Call for a quick quote and we will explain what it covers.
Asking for a quote
To make quoting easier, please include:
- Whether it has been sealed before
- Access, such as stairs, a lift or height
- Where the job is, and your postcode
- The problem you’ve noticed
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and email photos if that is easy.
Landlords, agents and businesses in Up Nately
Letting agents often deal with us directly. Tell us the address, the job and how access works.
In hotels, rooms out of use cost money, so we plan the work room by room. We have worked in hotels as well as homes and businesses.
DIY versus a professional finish
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
Nearby places to Up Nately
More services for Up Nately
Leave it or put it right?
The longer a joint stays open, the more water the wall takes in. In cold weather, frost can damage wet brick and render around the joint, so the problem grows beyond the joint itself. Older cottages and farmhouses around Up Nately can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
No two jobs are quite the same, so we quote each one individually. Size, access and the product the joint needs all play a part, and we’ll explain the quote if you ask.
Why choose Mr Mastic in Up Nately
- An ARBOMaster approved applicator
- Neat joints and a tidy finish
- Arbo and Everbuild products
- Full insurance on every job
Take a look at how sealant jobs are priced or our reviews.
Outside joints around Up Nately
Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
In the older streets around Church of St. Stephen, older walls, gutters and the joints where extensions meet them need a flexible sealant. Letting a property close to Hook station? Then outside joints that have cracked can let damp into a rental, so check them between lets.
Up Nately is about 5 miles east of Basingstoke, in Hampshire. Anywhere in RG27, we can carry out external mastic at your property. We cover 683 towns and villages across Hampshire, from the larger towns to small villages. Reading is on our list too, about 13 miles from Up Nately.
All of RG27 is within our area for external mastic. That includes homes and businesses on Heather Lane, Wood Lane and Greywell Road. Close by, we work in Nately Scures (1 mile north), Greywell (1 mile south-east), Newnham (1 mile north), Hook Common (1 mile north-east) and Warnborough Green (1 mile east). Further out, we also cover Basingstoke (5 miles west), Farnborough (10 miles east), Fleet (7 miles east), Aldershot (10 miles east), Alton (8 miles south) and Yateley (9 miles north-east).
What’s near Up Nately
For rail, the closest station is Hook station, about 1.7 miles north-east. Well-known places in the area include Basing House (2.6 miles west) and Odiham Castle (1.4 miles east). The countryside around Up Nately includes The Mill Field and Tundry Hill.
What we’re called out for in Up Nately
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.
Any of these means the joints need attention:
- Water getting into walls through failed joints
- Weeds or debris growing in open joints
- Sealant pulling away from one side of the joint
- Gaps where render, brick and frames meet
Managing a site like Robert May's School? Then larger buildings have long runs of movement joint that eventually need resealing.
What to look for in a quote
- How the surfaces are prepared before sealing
- What the cure time is
- Whether all the old sealant comes out first
- Are they insured?