Hampshire · England
Upham New Build Mastic
New build mastic across Upham and nearby, with old sealant always removed completely and a 12-month guarantee.
- Sealant work across a run of new homes
- Frame joints opening as the plaster dries
- Kitchen sealant that has pulled off the wall
New build mastic in Upham, done properly
New homes move as they dry out. Timber shrinks, plaster dries and baths and trays bed down, so sealant that was laid quickly before handover often cracks. Typical jobs include gaps behind new kitchen upstands and cracked caulk along new skirting, across bathrooms & en suites, plot handovers and show homes.
In a village or hamlet like Upham, new homes are more likely to be a barn conversion or a handful of houses than a big estate. Each still needs its sealant and floor joints finished properly.
Every job comes with our one-year guarantee, wherever you are in Hampshire.
- Place
- Upham (SO32)
- Wider area
- Hampshire
- Cover
- One year on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
How the job changes by surface
Bathrooms and en suites
En suite seals are easy to miss on a snagging list until they leak. A proper reseal keeps water in the tray.
Plot handovers
Developers can send the plot schedule and specification. Sealant work across the plot is covered.
Your questions about new build mastic in Upham
Is Upham in your area for new build mastic?
Yes. Our work covers London and the South East, and Upham is part of that. You can phone 0345 464 0079 or send us an email and tell us what needs doing, and we’ll give you a clear quote.
Do you work for landlords with property near Hedge End station?
Yes, we work for landlords and letting agents. You can call 0345 464 0079 or drop us an email with the address and a few details, and we will give you a fixed price before work begins.
Do you use white or clear sealant?
That depends on what the joint meets: white or clear for most sanitary joints, colours for worktops, floors and frames. We agree the colour before we start.
Do I need to be at home?
We need access to the joints, so we’ll agree that with you when we book. Indoors, that generally means someone at home.
Is there a guarantee?
Yes: twelve months. If there’s a problem with our work in that time, tell us and we will put it right.
How long before the joint can be used?
That depends on the sealant used, so follow the cure time we give you.
Where are you based?
We’re a Crawley-based firm, with over 20 years’ experience. We work across South East England, London and Scotland.
Can I do it myself?
You can, for simple jobs. The key is preparation: remove all the old material and work on a clean, dry joint. If it does not work out, we can redo it.
Do you need new build mastic in Upham?
New homes are full of moisture from plaster, screed and concrete, which takes a year or two to dry out. As it does, timber shrinks and joints open and the sealant has to cope with the movement.
It’s worth asking for a quote if you see:
- Kitchen sealant that has pulled off the wall
- Second-fix sealing on new plots
- Internal frame sealant that has split
- New-build shower sealant that has already split
Around Upham, as everywhere, new build mastic is only as good as the preparation behind it.
Before you book anyone
- The length of the guarantee
- How the surfaces are prepared before sealing
- How the colour is chosen
- Who turns up on the day
Nearby places to Upham
What else we do in Upham
Honest limits
A few problems are outside what sealant work can do:
- Disputes or warranty claims with your builder
- Leaks from pipes, valves or wastes, which need a plumber
- Settlement cracks that need a surveyor
If in doubt, ring 0345 464 0079 or email us and we will say what we think before booking.
What we seal
- Show homes
- Windows & doors
- Kitchens
- Bathrooms & en suites
- Skirting & floors
- Plot handovers
Why it’s worth doing now in Upham
A quick bead over the top of the old sealant can look fine at first, but it can’t bond to what’s underneath. A lasting seal starts with removing the old one completely. In a small place like Upham, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
Combining jobs into one visit is usually more efficient than separate visits, so it’s worth mentioning everything you’d like done. You’ll get one clear quote for the whole job.
Why choose Mr Mastic in Upham
- White, clear, grey or coloured to suit, where the product allows
- Anti-fungal sanitary silicone in wet areas
- Colour picked to suit the job
- We agree the colour with you first
Read what affects the cost and our reviews.
Landlord and commercial work in Upham
From a single let to a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a one-year guarantee.
In hotels, rooms out of use cost money, so the work can be planned room by room. We have worked in hotels as well as homes and businesses.
New build mastic in Upham: 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.
For new homes near Hedge End station, it’s worth checking the sealant early, while snags are still fresh.
Upham is about 5 miles east of Eastleigh, in Hampshire. Jobs in Upham get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Upham is one of 683 towns and villages in Hampshire we cover. You can also see our page for Southampton, roughly 8 miles from Upham.
We cover every part of SO32 for new build mastic. Whether your property is on Church Street, Shoe Lane and Widlers Lane or anywhere close by, our applicators can take on the job. We also cover the places around Upham: Ashton (1 mile south-east), Lower Upham (1 mile south-west), Wintershill (2 miles south-west), Durley Street (2 miles south-west) and Bishop's Waltham (2 miles south-east). Larger places within reach include Winchester (6 miles north-west), Gosport (13 miles south), Havant (14 miles south-east), Eastleigh (5 miles west), Fareham (9 miles south) and Horndean (11 miles south-east).
Landmarks near Upham
Around Upham, our work takes us to homes and buildings near Brushmakers Arms. The nearest railway station is Hedge End station, roughly 4.4 miles south-west. Well-known places in the area include Moorgreen Hospital (5.4 miles south-west) and Bishop's Waltham Museum (2.1 miles south). For a walk, there’s Bishops Waltham Branch LNR and Beacon Hill.
What we do, step by step
A visit follows a simple pattern: we look at the joints together, protect the area around them, do the work and clear up. It usually takes anything from a few hours to several days, depending on the number of plots. For a village or hamlet like Upham, 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.
- We look at why each joint failed, including any movement.
- We remove the failed sealant and clean the joints.
- We make sure the joints are dry and prime them if needed.
- Baths are filled with water, then the new sealant is applied.
- We check every joint and leave you with the cure times.
Getting ready for the visit
- Tell us if parking is tricky
- Move anything stored near the joints
- Plan for the work area to be out of bounds to pets and children
Ask for a quote
For a quick quote, get us on the phone, or email us if that’s easier. Describe what needs sealing and we will talk you through the work before giving you a price.
Read more
Looking after it afterwards
Simple care keeps the joints in good condition. Our advice:
- Avoid running a DIY bead over the old one
- Keep pictures and emails about snagging items
- Raise failed sealant with the developer while you’re covered
- Get a leaking seal dealt with straight away
Keep an eye on the joints over the first couple of years. Hairline gaps can open as timber and plaster dry.
The sooner you deal with untidy or cracking sealant, the less there is to put right. Left alone, a small crack can become a leak.