Hampshire · England
New-build mastic & snagging in Compton, Hampshire
Plot mastic for developers and snagging failed sealant in new homes in Compton, with a one-year guarantee on every job. Call for a quick quote.
- Gaps between new skirting and floors
- Internal frame sealant that has split
- Gaps opening as the house dries out and settles
Why act early in Compton
A tube of sealant from the DIY shop won’t fix the cause: grit, unprimed surfaces and old layers underneath. Proper removal and preparation are what make it last. Around Compton, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
The cost reflects the work involved, not guesswork. That’s why we ask about the job first and give you a clear price before any work starts.
Why choose Mr Mastic in Compton
- We are fully insured
- Sanitary silicone with an anti-fungal additive in wet areas
- Homes, businesses and hotels
- We leave the area clean and tidy
Read what affects the cost or customer reviews.
New build mastic in Compton, done properly
Snagging sealant properly means taking the failed bead out completely. New silicone won’t bond to old silicone, so the joint is cut out, cleaned, dried and resealed. If you have smeared, uneven beads picked up at snagging and kitchen sealant that has pulled off the wall, we can help, on plot handovers, skirting & floors and windows & doors alike.
For a small place like Compton, the journey and access are planned in advance, and the work itself is the same as on any site.
All of our work is guaranteed for twelve months, in Compton and everywhere else we cover.
- Where
- Compton (SO21)
- Region
- Hampshire
- Guarantee
- 12 months on all our work
- Quotes
- A clear price before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Work for landlords, hotels and businesses
Mouldy or split sealant often shows up at the end of a tenancy. We can quote for more than one property at once.
Whether it’s one flat or a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
Can I do it myself?
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Nearby places to Compton
Also in Compton
Questions from Compton
Is Compton in your area for new build mastic?
Yes, Compton is within the area we cover. Our work covers London and the South East. Just ring 0345 464 0079 or send us an email with a few details of the job, and we’ll give you a clear price.
I let a flat near Shawford station. Can you help?
Yes. We work for letting agents and landlords as well as householders, and several properties can go on one quote. You can phone 0345 464 0079 or send us an email with the details for a clear quote.
What sealant do you use?
Each joint gets the product that suits it. Where it moves, gets wet or faces the weather makes a difference, and we will tell you what we are using.
Will you leave a mess?
No. The area is protected while we work and cleaned up afterwards.
Can I do it myself?
Some simple jobs can be done by a careful DIYer. Most DIY failures come from sealing over old material, wet joints or too much sealant.
Can I add another job to the visit?
Of course. Combining jobs makes good use of the visit.
Can you work on commercial sites?
Yes. We have worked for hotels, offices and other businesses.
What does new build mastic cost?
We do not publish prices, because the cost depends on the job: its size, the old material, access and the product needed. You will get a clear quote before we start.
Surface by surface
Bathrooms and en suites
New-build bathrooms and en suites are where sealant fails most often. We cut out the failed bead, clean and prime, and reseal with anti-fungal sanitary silicone.
Windows and doors
The gap between a new frame and its plaster reveal often opens up. We cut out the cracked bead and reseal with a flexible sealant in a matching colour.
What we do, step by step
All our tools and materials come with us in the van, so there’s nothing for you to buy. After a quick look at the joints together, we protect the area and start. It normally takes a few hours for most snagging lists, longer for a run of plots. For a village or hamlet like Compton, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- We start by agreeing which joints are on the list, from the snagging sheet or plot schedule.
- Failed or untidy sealant is cut out completely.
- We clean off dust from the build and prime the surfaces where the product needs it.
- New sealant suited to each joint is applied and tooled neatly.
- We check every joint and tell you how long each needs to cure.
Getting ready for the visit
- Clear the area around the work
- Mention any sign-in or site rules at work premises
- Mention if the joints have been sealed before
Ask for a quote
Need a quote? Please call 0345 464 0079 or email us and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.
Advice
Joints and finishes in Compton homes
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
In and around Compton, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint. For new homes near Shawford station, it’s worth checking the sealant early, while snags are still fresh.
Compton is about 3 miles south of Winchester, in Hampshire. Whether you are in the middle of Compton or further out, new build mastic is available for homes and businesses alike, from flats and houses to offices and hotels. Our area takes in 683 places across Hampshire, from the larger towns to small villages. Our Southampton page covers work nearby, about 8 miles away.
Here we cover the SO21 postcode area for new build mastic. We cover properties on Field Way, Clease Way and Cliff Way and the roads around them. Close by, we work in South Down (1 mile south), Shawford (1 mile east), Otterbourne (1 mile south), Twyford (1 mile east) and Oliver's Battery (2 miles north). Larger places within reach include Winchester (3 miles north), Eastleigh (4 miles south), Fareham (13 miles south-east), Andover (14 miles north-west), Totton (10 miles south-west) and Chandler's Ford (3 miles south-west).
What’s near Compton
Locally, jobs take us to homes and businesses close to The Bridge Inn, Thornden School and St. Cross Park and the streets around them. The closest station to Compton is Shawford station, roughly 0.5 miles east of the centre. Nearby you will also find Balfour Museum of Hampshire Red Cross History (2.4 miles north) and Royal Hampshire County Hospital (2.8 miles north). Not far away are Shawford Down and Twyford Down.
How we quote for new build mastic
Jobs vary more than people expect. The main factors:
- Working hours on commercial sites
- Mould in or behind the old joints
- The type of sealant required
- The size of the job
There are no prices on our website, because each job is priced on what it involves. For a quick quote, please ring 0345 464 0079 or drop us an email.
Helping us quote
What to tell us when you ask for a quote:
- Access, such as stairs, a lift or height
- If it’s domestic, commercial or a hotel
- Whether it has been sealed before
- A few pictures by email, if you can
Every job is quoted individually, so start by telling us what you need. Just phone 0345 464 0079 or email us with the details, and photos are welcome.
How to look after the new joints
Looking after new joints is easy, and it makes a real difference:
- Avoid running a DIY bead over the old one
- Use the extractor fan every time you shower
- Wait for the cure time before using a resealed shower
- Clean sealant with mild detergent, not abrasives
Keep the bathroom ventilated, especially in the first year. Run the fan or open a window after bathing.
Mould takes hold quickly in sealant that has gaps or lifted edges. Resealing before mould gets in saves a harder job later.