Hampshire · England
New Build Mastic in Colbury
We cover Colbury for plot mastic for developers and snagging failed sealant in new homes. Old material cut out, joints cleaned and sealed neatly and a one-year guarantee.
- Cracked sealant around new window and door frames
- New-build shower sealant that has already split
- Sealant applied over dusty or wet surfaces
Common problems we fix in Colbury
Not every new-build joint gets the right sealant: caulk where water collects, or a rigid product on a moving joint. Neither lasts long.
These are the problems we are asked about most:
- Cracks appearing as a new home settles
- Shower seals failing in the first year or two
- Sealant that never bonded to the surface
- Sealant work across a run of new homes
Around Colbury, as everywhere, new build mastic is only as good as the preparation behind it.
Before booking anyone
- What happens if the job turns out different
- How the joint is cleaned and prepared
- The length of the guarantee
- Whether you can choose the colour
About our new build mastic in Colbury
If your new home has a leaking shower seal, open skirting joints or untidy sealant, we can help. While the builder’s snagging or warranty period runs, report it to them first. We work on skirting & floors, plot handovers and windows & doors, and the jobs we see most are messy sealant that spoils new finishes and beads laid onto grit and dust from the build.
Older homes in small places like Colbury often have timber floors that move with the seasons, so skirting and threshold joints need a flexible sealant rather than a rigid filler.
The work is covered for a year after we finish. If there’s a problem with it, please ring 0345 464 0079 or email us.
- Location
- Colbury (SO40)
- Wider area
- Hampshire
- Guarantee
- A year, on every job
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Nearby places to Colbury
More services for Colbury
Keeping the joints in good condition
Aftercare is simple, and it makes a real difference:
- Open a window or run the fan after bathing
- Keep water off fresh sealant until it has cured
- Resist patching a failed seal with a tube from the DIY shop
- Check bath and shower seals every few months as the house settles
Keep the bathroom ventilated, especially in the first year. Use the extractor fan or open a window after showers to help keep mould away.
Leave a failed new-build seal and water can reach the floor and the ceiling below. Early resealing keeps the job small and the new finishes intact.
What happens if it’s left?
Running a new bead over the builder’s sealant might look tidy for a few weeks, but it won’t bond to the old layer. A lasting seal starts with removing the old one completely. Around Colbury, older homes often have timber in their 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.
Why choose Mr Mastic in Colbury
- Sealant colour chosen to suit
- White, clear, grey or another colour, product permitting
- Sanitary silicone with an anti-fungal additive in wet areas
- Full insurance on every job
Read what affects the cost or customer reviews.
Joints and finishes in Colbury homes
Colbury is close to the coast. Plot mastic on new homes near the coast takes more weather than it would inland, so it’s worth checking at snagging. The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you’ve bought a new home near Ashurst New Forest station, the sealant around baths, showers and frames is worth checking in the first year or two.
Colbury is about 1 mile south of Totton, in Hampshire. Wherever you are in the SO40 postcode area, we cover new build mastic for homes and businesses. We cover 683 towns and villages across Hampshire, large and small.
Postcode districts we cover here for new build mastic: SO40. Nearby, we also carry out new build mastic in Ashurst (1 mile west), Lyndhurst (4 miles south-west), Emery Down (4 miles south-west), Balmerlawn (6 miles south-west) and Brockenhurst (6 miles south-west). We also work in nearby towns such as Winchester (14 miles north-east), Eastleigh (8 miles north-east), Fareham (14 miles east), Chandler's Ford (8 miles north-east), Hedge End (9 miles east) and Lymington (10 miles south).
What’s near Colbury
Typical jobs here are in homes near Hounsdown School and The Forest Inn and the streets around them. The nearest railway station is Ashurst New Forest station, about 1.2 miles south-west of the centre. A little further out are Ashurst Hospital (1 mile south-west) and National Dairy Museum (under half a mile south). Open spaces near Colbury include Testwood Lakes.
DIY versus a professional finish
If you are set on DIY, put the effort into 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 DIY attempt doesn’t rule out a professional job. We remove it and do the joint properly, so just mention it when you contact us.
Work for landlords, hotels and businesses
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Resealing at the right time is simple maintenance that we can handle for you.
From a single let to a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
Colbury: your questions answered
Do you work for landlords with property near Ashurst New Forest station?
Yes, we work for letting agents and landlords. You can ring 0345 464 0079 or send us an email with the address and a few details, and we’ll give you a fixed price before any work starts.
Do you cover smaller places like Colbury?
Yes. Colbury 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.
Can you work on commercial sites?
Yes. We have worked for hotels, offices and other businesses.
How long does the job take?
It depends on the size of the job, but as a guide it takes a few hours in a single home. We will tell you when we quote.
How long should I leave it?
It depends on the product. Before we leave, we will tell you the cure time.
Is it worth trying it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
Can I send you my snagging list?
Yes. Send the list and a few photos of the sealant items, and we will quote. We will tell you if anything on it is not a sealant job.
What sealant do you use?
The product depends on the job: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. Brands we use include Arbo and Everbuild.
The process
A visit follows a simple pattern: we check the joints, protect the area around them, carry out the job and clear up. It normally takes anything from a few hours to several days, depending on the number of plots. For a village or hamlet like Colbury, 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 start by going through the snagging items or plot schedule with you.
- The failed sealant is removed completely down to clean surfaces.
- We clean out the dust and grit left from the build.
- Primer goes on where the surface and product need it, then the new sealant.
- We tool every joint neatly and tell you when each area can be used.
Getting ready for the visit
- Move anything stored near the joints
- For business premises, tell us about site rules or sign-in
- Let us know about earlier repairs to the joints
Get a quote
For new build mastic in Colbury, ring 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and you will get a clear quote before any work starts.
Read more
What affects the cost of new build mastic
We quote each job individually. These are the things that affect it:
- The type of sealant required
- Mould in or behind the old joints
- The amount of work
- The number of rooms or windows
Every job is a little different, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all make a difference.
What to tell us for a quote
Photos help, but a description is a good start. Try to tell us:
- The problem you’ve noticed
- Access, such as stairs, a lift or height
- Photos by email, if that’s easy
- Whether it has been sealed before
Getting a quote is simple: tell us what needs doing and where, and roughly how big it is. A few pictures by email make the job easier to understand.