Hampshire · England
Roughdown New Build Mastic
Problem with your new-build sealant joints in Roughdown? We cut out the old, prepare the joints and apply the right sealant.
- Gaps between new skirting and floors
- Leaking shower tray seals in a new home
- Worktop and upstand sealant coming away
New build mastic for homes and businesses in Roughdown
We carry out plot mastic and second-fix sealing for builders, and snagging reseals for new-home owners. Both get the same care over preparation, because that is what rushed new-build sealant generally lacks. If you have sealant that never bonded to the surface and sealant work across a run of new homes, we can help.
In a village or hamlet like Roughdown, new homes are more likely to be a barn conversion or a handful of houses than a big estate. Every one needs its sealant and floor joints done properly, whatever the size of the site.
Each job carries a 12-month guarantee, large or small.
- Location
- Roughdown (SO45)
- Region
- Hampshire
- Cover
- A year, on every job
- Quotes
- A clear price before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Leave it or put it right?
It often makes sense to do all the sealant items on a snagging list together. It’s one visit, one quote and one set of cure times. In a small place like Roughdown, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
The cost reflects the work involved, not guesswork. That’s why we ask a few questions first.
Why choose Mr Mastic in Roughdown
- White, clear, grey or another colour, product permitting
- 20+ years of sealant experience
- We leave the area clean and tidy
- Homes, businesses and hotels
See our cost guide or what customers say.
Places near Roughdown
What else we do in Roughdown
Roughdown questions
Do you cover smaller places like Roughdown?
Yes. Roughdown is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
I let a flat near Netley station. Can you help?
Yes, landlords and agents are among the people we work for. You can phone 0345 464 0079 or drop us an email with the details for a clear quote.
What does new build mastic cost?
It depends on the job, so we quote each one individually. To get one, phone 0345 464 0079 or send us an email and tell us what needs doing and where.
Do you work for developers?
Yes. Plot mastic and second-fix sealing for developers is part of our work. Send us the plot schedule and we’ll quote.
Will you leave a mess?
We keep the work tidy. We protect what’s around the joints, and the area is left clean when we finish.
What sealant do you use?
It depends on the joint: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. Brands we use include Arbo and Everbuild.
Do you guarantee your work?
Yes. All our work carries a one-year guarantee.
Are you fully insured?
Yes. Full insurance covers our work.
What affects the cost of new build mastic
Your quote is based on your job. We look at:
- The number of rooms or windows
- How much old sealant there is and how hard it is to remove
- Any mould that needs treating
- The size of the job
A few things move the cost up or down: how much old sealant there is and how stubborn it is, any mould to treat, and whether the work is at height. We take all of that into account in your quote.
What we need to know
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- Whether it has been sealed before
- Where the property is
- The type of property
- What the problem is, such as mould, gaps, leaks or cracking
Want a quote for new build mastic? Please call 0345 464 0079 or drop us an email and tell us about the job. You’ll know what we plan to do, and what it will cost, before any work begins.
What happens on the day
There is not much for you to do on the day. Point us to the joints and we’ll get on with it. The job generally takes a few hours for most snagging lists, longer for a run of plots. Somewhere like Roughdown needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- Each joint is checked for movement before work begins.
- Old sealant is cut out and the joints cleaned.
- We make sure the joints are dry and prime them if needed.
- New sealant goes in, with baths filled first so they’re at their heaviest.
- The finished joints are checked and the cure times given.
How to prepare
- On commercial sites, let us know about site rules
- Tell us about any water getting in
- Move anything stored near the joints
Get a quote
For a quick quote, get us on the phone, or send an email if you’d rather. Describe what needs sealing and we will talk you through the work before giving you a price.
Read more
For landlords and businesses
Hotels need rooms back in use, so we plan the work room by room. Hotel work is part of what we do, alongside homes and businesses.
Letting agents and landlords in Roughdown can book us as well as homeowners. Sealant work between tenants keeps a property looking cared for.
Surface by surface
Skirting and floors
Wet-area floor joints need a flexible seal. We seal them with a sealant suited to wet areas.
Bathrooms and en suites
En suite seals are easy to miss on a snagging list until they leak. Resealing properly keeps water where it belongs.
What new build mastic looks like in Roughdown
Roughdown is within about 2 miles of the coast. New homes near the sea put their outside mastic to work from day one, so any gaps are best picked up early. London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
If you’ve bought a new home near Netley station, the sealant around baths, showers and frames is worth checking in the first year or two. In and around Roughdown, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Roughdown is about 3 miles south of Hythe, in Hampshire. For new build mastic in and around Roughdown, please call 0345 464 0079 or email us for a quick quote. We are based in Crawley and cover Hampshire, Roughdown included. Across Hampshire, we cover 683 places, and Roughdown is one of them. We also work in Southampton, around 7 miles away.
Work in SO45 works the same way as everywhere else we cover. Other places close to Roughdown include Holbury (1 mile north), Blackfield (1 mile east), Little Holbury (1 mile north), Langley (1 mile south-east) and Hardley (1 mile north). Within a short drive, we also cover Gosport (10 miles east), Eastleigh (10 miles north), Fareham (9 miles east), Totton (9 miles north-west), Chandler's Ford (11 miles north) and Hedge End (8 miles north-east).
Local landmarks in Roughdown
Typical jobs here are in homes near The New Forest Academy. Roughdown’s nearest station is Netley station, roughly 4.3 miles north-east of the centre. Well-known places in the area include Beaulieu Abbey And Display Of Monastic Life (2.9 miles west) and Calshot Castle (3.5 miles east). For a walk, there’s Mercury Marshes.
Can I do it myself?
A DIY attempt does not rule out a professional job. We remove it and do the joint properly, so tell us about it when you ask for a quote.
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
Keeping the joints in good condition
A little care helps the new joints last. Our advice:
- Act quickly if a seal starts to leak
- Resist patching a failed seal with a tube from the DIY shop
- Watch for new gaps as the house dries out
- Report sealant problems to your builder during the snagging period
Wipe the sealant with warm soapy water. Keep scourers and harsh chemicals off it, which can damage the surface.
A seal that splits early is often a sign of movement. Have it resealed, and the tray or bath checked, before it gets worse.