Hampshire · England
New Build Mastic in Cadnam
We cover Cadnam for plot mastic for developers and snagging failed sealant in new homes. Old material cut out, joints cleaned and sealed neatly.
- Sealant work across a run of new homes
- Sealant that never bonded to the surface
- Kitchen sealant that has pulled off the wall
New build mastic for homes and businesses in Cadnam
Our new-build work comes in two parts: plot mastic for developers, and putting right failed sealant for people who’ve bought a new home. Both get the same care over preparation, because that is what rushed new-build sealant generally lacks. We work on windows & doors, plot handovers and skirting & floors, and people most often call us about internal frame sealant that has split and sealant that never bonded to the surface.
Older homes in small places like Cadnam often have timber floors that move with the seasons, which is why skirting and threshold joints need a flexible sealant, not filler.
Every job is covered by a one-year guarantee.
- Where
- Cadnam (SO40)
- Region
- Hampshire
- Guarantee
- 12 months on all our work
- Quote
- A clear price before we start
- Call
- 0345 464 0079
- Updated
- 26 October 2026
What affects the quote in Cadnam
For a quick quote, just ask. The main things that affect it are:
- The number and length of the joints
- The number of rooms or windows
- Whether there’s mould to deal with
- Any working-time requirements on site
Some things make a job bigger or smaller: the old material and how easily it comes out, whether mould needs treating, and whether we need extra access for height. Your quote takes all of that into account.
What to tell us for a quote
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- Pictures of the joints, sent by email
- How we’d reach the joints
- Roughly how big the job is
- The type of property
For a quote, ring 0345 464 0079 or drop us an email with the location and a short description of the problem. You will have a clear quote before work begins.
Also near Cadnam
More services for Cadnam
Aftercare tips
Simple care keeps the joints in good condition. We recommend:
- Ventilate bathrooms well, especially in the first year
- Report sealant problems to your builder during the snagging period
- Resist patching a failed seal with a tube from the DIY shop
- Keep photos and emails about snagging items
Don’t stand on the bath edge or the lip of the tray. Report any movement in a bath or tray.
The sooner you deal with untidy or cracking sealant, the less there is to put right. Small faults turn into leaks if left.
New homes and floors in Cadnam
The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
For new homes near Ashurst New Forest station, it’s worth checking the sealant early, while snags are still fresh.
Cadnam is about 3 miles west of Totton, in Hampshire. Our applicators cover new build mastic for homes and businesses in Cadnam and the surrounding area. Our area takes in 683 places across Hampshire. Southampton is on our list too, around 8 miles away.
Work in SO40 works the same way as everywhere else we cover. If you need new build mastic at a property on Old Lyndhurst Road, White Hart Lane and Southampton Road or anywhere close by, we can help. Neighbouring places we cover for new build mastic include Wittensford (1 mile west), Bartley (1 mile south-east), Copythorne (1 mile north-east), Newbridge (1 mile north) and Winsor (1 mile east). We also work in nearby towns such as Winchester (15 miles north-east), Eastleigh (11 miles east), Totton (3 miles east), Chandler's Ford (9 miles north-east), Hedge End (12 miles east) and Lymington (11 miles south).
What’s near Cadnam
Typical jobs here are in homes near The White Hart pub, among other places. The closest station to Cadnam is Ashurst New Forest station, roughly 3.1 miles south-east of the centre. Well-known places in the area include Tatchbury Mount Hospital (2.2 miles east) and National Dairy Museum (3.6 miles south-east). Open spaces near Cadnam include Copythorne Common.
What happens if it’s left?
If you are still in the builder’s snagging or warranty period, ask them to put it right first. If it’s slow, or the same joint keeps failing, a proper reseal from a specialist is the next step. In a small place like Cadnam, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
A failed joint rarely gets cheaper to fix by waiting. If you’re not sure whether it needs doing, ring 0345 464 0079 or drop us an email for an honest opinion and a quote.
Why book with us
- Sealant colour chosen to suit
- White, clear, grey or another colour, product permitting
- 4.9 on Google from 180+ five-star reviews
- 12-month guarantee on every job
Read what affects the cost or what customers say.
Do you need new build mastic in Cadnam?
The first winter with the heating on dries a new home quickly. Gaps open along skirting, frames and worktops.
Keep an eye out for these signs:
- Worktop and upstand sealant coming away
- Internal frame sealant that has split
- Sealant work across a run of new homes
- Untidy sealant flagged on a snagging list
In and around Cadnam, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Comparing quotes
- What product goes in the joint
- What insurance they hold
- What guarantee comes with the work
- Is the old sealant removed completely?
DIY sealant or a professional job?
The biggest DIY mistake is sealing over old sealant. Silicone does not stick to old silicone, so it peels away and traps moisture behind it. All the old material has to come out first.
If you’re 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.
What we do, step by step
We work through the job in order: protection first, then preparation, sealing and a tidy-up. Typically it takes a few hours for most snagging lists, longer for a run of plots, and the area is left clean. For a village or hamlet like Cadnam, the journey is planned in advance: 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 we start.
- We remove the failed sealant and clean the joints.
- Joints are dried and primed where the product calls for it.
- Baths are filled with water, then the new sealant is applied.
- The finished joints are checked and the cure times given.
Before we arrive
- Mention any tricky access
- Plan for the work area to be out of bounds to pets and children
- Try not to wet indoor joints just before the visit
Getting a quote
If you are in Cadnam and need new build mastic, call 0345 464 0079 or send us an email. Tell us what the problem is and where, and you’ll get a clear quote before we start.
Advice
When something else is needed
We’d rather tell you now than do work that won’t last, so here’s what sealant can’t put right:
- Settlement cracks that need a surveyor
- Leaking fittings rather than failed sealant
- Baths and trays that move too much for sealant to cope with
Not sure which it is? You can ring 0345 464 0079 or email us and we’ll tell you honestly before you book.
What we seal
- Bathrooms & en suites
- Windows & doors
- Show homes
- Plot handovers
- Skirting & floors
- Kitchens
Cadnam: your questions answered
I let a flat near Ashurst New Forest station. Can you help?
Yes, rental work is part of what we do. You can ring 0345 464 0079 or email us with the address and a few details, and we’ll give you a fixed price before any work starts.
Is Cadnam within the area you cover?
Yes, we do. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Do you guarantee your work?
Yes, always. There’s a 12-month guarantee on every job, large or small.
Which products do you use?
It depends on the joint: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. Brands we use include Arbo and Everbuild.
Can I add another job to the visit?
Yes, we can. Several rooms, windows or areas can go on one quote.
When is the sealant fully cured?
Cure times vary by product and the temperature. Before we leave, we will tell you the cure time.
Will there be a smell?
That depends on the sealant. Some smell for a while, some hardly at all.
Should I go to my builder first?
While the snagging or warranty period runs, the builder should be your first contact. If it is not sorted, or keeps failing, get in touch with us.