Hampshire · England
New-build mastic & snagging in Blendworth, Hampshire
We cover Blendworth for plot mastic for developers and snagging failed sealant in new homes. Old material cut out, joints cleaned and sealed neatly.
- Gaps opening as the house dries out and settles
- Cracked sealant around new window and door frames
- Sealant work across a run of new homes
New build mastic in Blendworth, 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 beads laid onto grit and dust from the build and messy sealant that spoils new finishes, we can put it right, whatever the surface.
For a small place like Blendworth, the journey and access are planned in advance, and once on site, the job is the same as anywhere.
Every job comes with a 12-month guarantee.
- Place
- Blendworth (PO8)
- Wider area
- Hampshire
- Cover
- A year, on every job
- Price
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Looking after it afterwards
How long the joints last depends on use and care. Here’s what we suggest:
- Raise failed sealant with the developer while you are covered
- Get a leaking seal dealt with straight away
- Follow the cure time we give you
- Check bath and shower seals every few months as the house settles
Do not stand on the bath edge or the lip of the tray while the sealant cures. If a bath or tray moves when you stand in it, get it looked at.
Report failed sealant to the builder while you are in the snagging period. After that, putting it right may fall to you so report it promptly.
Common problems we fix in Blendworth
Not every new-build joint gets the right sealant: decorators’ caulk in a wet area, or a stiff sealant where there’s movement. Neither lasts long.
Signs it’s time to call us include:
- Gaps opening as the house dries out and settles
- Shower seals failing in the first year or two
- Second-fix sealing on new plots
- Gaps between new skirting and floors
If you’ve bought a new home near Rowlands Castle station, the sealant around baths, showers and frames is worth checking in the first year or two.
Questions to ask before you book
- Is VAT in the price?
- Which sealant they’ll use, and why
- How the surfaces are prepared before sealing
- Whether you can choose the colour
Your questions about new build mastic in Blendworth
Do you cover Blendworth for new build mastic?
Yes, Blendworth is within the area we cover. Our work covers London and the South East. You can call 0345 464 0079 or drop us an email and let us know what needs doing, and we’ll give you a clear quote.
I let a flat near Rowlands Castle station. Can you help?
Yes, rental work is part of what we do. Just call 0345 464 0079 or send us an email and tell us about the property, and we will give you a clear price.
Do you hold any approvals?
Yes. Mr Mastic is an ARBOMaster approved applicator and we’re fully insured too.
Can you reseal over the builder’s sealant?
No. New silicone won’t bond to old silicone, so it soon lifts and traps water. We cut the old bead out completely.
Is it worth resealing while the house is still settling?
It depends on whether water is getting through. Failed seals in wet areas need doing now, while small cosmetic gaps can wait a while.
Can you match the sealant colour to my new kitchen or bathroom?
Most bathroom joints are white or clear, but sealant comes in other colours too. We choose one to suit the room and agree it with you.
How long should I leave it?
Many sealants skin over quickly but take longer to cure fully. We’ll give you the cure time for the product we used.
Do you work for hotels and businesses?
Yes. We work in offices, washrooms, hotels and other commercial premises. We can talk about working times when we quote.
DIY sealant or a professional job?
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
A DIY attempt doesn’t rule out a professional job. We cut it out and start again, so tell us about it when you ask for a quote.
New homes and floors in Blendworth
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.
In and around Blendworth, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Blendworth is about 1 mile north-east of Horndean, in Hampshire. Across the PO8 area, we cover new build mastic for homes and businesses. Our Hampshire coverage runs to 683 places, and Blendworth is one of them. For nearby work, see our Portsmouth page, about 8 miles away.
We cover every part of the PO8 postcode area for new build mastic and the streets around it. Nearby, we also carry out new build mastic in Chalton (2 miles north-east), Forestside (3 miles east), West Marden (4 miles east), Buriton (4 miles north) and Weston (5 miles north). Larger places within reach include Gosport (11 miles south-west), Havant (4 miles south), Fareham (10 miles south-west), Hedge End (14 miles west), Waterlooville (3 miles south-west) and Petersfield (6 miles north).
What’s near Blendworth
We work in homes and buildings around Horndean Technology College and The Ship & Bell pub. Blendworth’s nearest station is Rowlands Castle station, roughly 2.1 miles south-east. Well-known places in the area include Havant War Memorial Hospital (4.3 miles south) and Clanfield Earthwork (2.1 miles north). Open spaces near Blendworth include Windmill Hill.
For landlords and businesses
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
In hotels, rooms out of use cost money, so the work can be planned room by room. Hotel work is part of what we do, alongside homes and businesses.
How it works
You don’t need to clear the whole room or building before we come, just the space around the work. Everything nearby is protected, and the job takes anything from a few hours to several days, depending on the number of plots in most cases. For a village or hamlet like Blendworth, the journey is planned in advance: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- We look at why each joint failed, including any movement.
- Old sealant is cut out and the joints cleaned.
- We make sure the joints are dry and prime them if needed.
- Baths are filled with water, then the new sealant is applied.
- The finished joints are checked and the cure times given.
Getting ready for the visit
- Tell us about access, such as stairs, a lift or high-level joints
- Mention if the joints have been sealed before
- Mention any sign-in or site rules at work premises
Getting a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job. Whenever you’re ready, call 0345 464 0079 or send us an email.
Read more
Leave it or put it right?
The builder is generally the first port of call while the snagging or warranty period runs. If it’s slow, or the same joint keeps failing, a proper reseal from a specialist is the next step. Around Blendworth, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
Instead of a standard rate, we look at what your job involves: how many joints, what’s in them now and how we reach them. You will know the price before we begin.
Why choose Mr Mastic in Blendworth
- 20+ years of sealant experience
- Old sealant always removed completely
- We leave the area clean and tidy
- Approved under the ARBOMaster scheme
Read our cost guide and customer reviews.
Different surfaces, different methods
Plot handovers
Taking time over preparation reduces return visits. Dust from the build is removed first.
Bathrooms and en suites
Shower trays in new homes often move slightly in the first year. We reseal once the old bead is fully out with baths filled first.