Hampshire · England
New Build Mastic in Marchwood
New build mastic across Marchwood and nearby, with old sealant always removed completely and a one-year guarantee.
- Gaps between new skirting and floors
- Cracks appearing as a new home settles
- Sealant that never bonded to the surface
Keeping the joints in good condition
So the new joints stay in good condition:
- Get a leaking seal dealt with right away
- Watch for new gaps as the house dries out
- Report sealant problems to your builder during the snagging period
- Keep water off fresh sealant until it has cured
Wipe the sealant with warm soapy water. Avoid abrasive pads and strong solvents.
Don’t let the snagging period run out with sealant problems unreported. Once it ends, the repair may be down to you, so raise it early.
How we handle new build mastic in Marchwood
Some owners wait for the first year’s movement before having joints redone. For small cosmetic gaps, that’s reasonable, but a seal that’s letting water through needs doing now. Typical jobs include cracked caulk along new skirting and sealant that never bonded to the surface, on plot handovers, kitchens and skirting & floors.
For a new home in or near Marchwood, it’s worth checking the sealant early. Common snags include open skirting joints, lifting shower seals and gaps around frames.
Our work is backed for twelve months.
- Place
- Marchwood (SO40)
- Wider area
- Hampshire
- Guarantee
- One year on every job
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Work for landlords, hotels and businesses
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes 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.
Joints and finishes in Marchwood homes
Marchwood is within about 1 mile of the coast. Plot mastic on new homes near the coast takes more weather than it would inland, so it’s worth checking at snagging. 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.
In and around Marchwood, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Marchwood is about 3 miles south-east of Totton, in Hampshire. Across the SO40 area, our applicators can take on new build mastic. We cover 683 towns and villages across Hampshire, large and small.
We work across SO40 for new build mastic and the streets around it. New build mastic is available to properties on Cranberry Close, Melick Close and The Rowans. Marchwood is on the A326, which makes it straightforward to reach with everything needed for new build mastic. Neighbouring places we cover for new build mastic include Dibden (2 miles south-east), Dibden Purlieu (3 miles south-east), Hythe (3 miles south-east), Beaulieu (5 miles south) and Furzey Lodge (5 miles south). We also work in nearby towns such as Winchester (13 miles north-east), Gosport (14 miles south-east), Eastleigh (7 miles north-east), Fareham (11 miles east), Totton (3 miles north-west) and Chandler's Ford (7 miles north-east).
Local landmarks in Marchwood
Typical jobs here are in homes near White Horse pub and Hounsdown School, among other places. The nearest railway station is Millbrook (Hants) station, about 1.6 miles north-east. Other landmarks nearby include Netley Castle (4.1 miles east) and Westquay (2.1 miles east). Open spaces near Marchwood include Testwood Lakes.
Places near Marchwood
More services for Marchwood
Signs you need new build mastic in Marchwood
If plaster or screed was still damp when it was sealed, the bond suffers. Site programmes don’t always leave time for joints to dry before the sealant goes on.
Keep an eye out for any of the following:
- Untidy sealant flagged on a snagging list
- Skirting joints opening in the first winter
- New-build shower sealant that has already split
- Cracked sealant around new window and door frames
If you’ve bought a new home near Millbrook (Hants) station, the sealant around baths, showers and frames is worth checking in the first year or two.
Questions to ask before you book
- What the quote includes, VAT included or not
- What guarantee comes with the work
- How long to leave it before use
- Is the old sealant removed completely?
Why it’s worth doing now in Marchwood
Resealing everything on a snagging list in one visit is normally simpler than chasing joints one at a time. It’s one visit, one quote and one set of cure times to plan around. Around Marchwood, water from a failed joint in an older home can soak into timber and plaster, and that’s a much bigger job than renewing the sealant.
The cost depends on how much there is to do, how hard the old material is to remove and how easy the joints are to reach. You will have a clear quote before any work starts, so you know where you stand.
Why Marchwood customers choose us
- Tidy, careful work
- Anti-fungal sanitary silicone in wet areas
- 4.9 on Google from 180+ five-star reviews
- You choose the colour before work begins
Take a look at our cost guide and customer reviews.
Your questions about new build mastic in Marchwood
Can you do new build mastic in Marchwood?
Yes. Our work covers London and the South East, and Marchwood is part of that. You can phone 0345 464 0079 or email us and tell us what needs doing, and we’ll give you a clear quote.
Do you cover smaller places like Marchwood?
Yes, we do. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Will you leave a mess?
No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.
Do you use white or clear sealant?
The colour is chosen to suit the tiles, worktop or frame. Tell us what you’d like when you get a quote.
Where is Mr Mastic based?
We are a Crawley-based firm, with over 20 years’ experience. We work across South East England, London and Scotland.
Can tenants book the work?
Yes, though it’s best to check with your landlord first. Landlords are often happy for the work to be arranged.
Can you work from my snagging list?
Yes. Photos of each sealant item help us quote. If something isn’t sealant, we’ll say so.
Will the old sealant be removed?
Yes. We cut out all the old sealant and clean the joint before resealing.
How the visit works
There is not much for you to do on the day. Point us to the joints and we will get on with it. The work itself takes anything from a few hours to several days, depending on the number of plots. For a job in Marchwood, we agree the time, the access and parking before the day. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- We look at why each joint failed, including any movement.
- We remove the failed sealant and clean the joints.
- Joints are dried and primed where the product calls for it.
- New sealant goes in, with baths filled first so they’re at their heaviest.
- The finished joints are checked and the cure times given.
Preparing for the visit
- Mention any parking rules near the property
- Try not to wet indoor joints just before the visit
- On commercial sites, let us know about site rules
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 and give you a clear price.
Related advice
DIY sealant or a professional job?
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it does not work out, we can still put it right.
What affects the cost of new build mastic
We don’t publish a price list. The quote depends on:
- The size of the job
- The product the joint needs
- Access and height
- When we can work, for business premises
Rather than a set price list, we look at what your job involves: the amount of work, the old material and the access. The price is agreed before we begin.
Helping us quote
When you contact us, these details help:
- Access, such as stairs, a lift or height
- Roughly how big the job is
- The address or postcode of the job
- Any previous sealing or DIY work
Every job is quoted individually. Just phone 0345 464 0079 or email us with the details, and pictures are welcome.