Hampshire · England
New Build Mastic in Blackmoor
Specialist new build mastic for Blackmoor: careful preparation, the right product and tidy work. Call for a quick quote.
- Messy sealant that spoils new finishes
- Sealant applied over dusty or wet surfaces
- Gaps between new skirting and floors
Landlords, agents and businesses in Blackmoor
We work for letting agents and landlords as well as householders. Sealant work between tenants is a simple way to keep a property in good order before the next move-in.
We also work for property managers and facilities teams in Blackmoor and across Hampshire. We can quote a run of properties together.
About our new build mastic in Blackmoor
We never seal over a failed new-build bead. New silicone won’t bond to old silicone, so it all comes out before we clean, dry and reseal. We work on kitchens, bathrooms & en suites and skirting & floors, and common reasons people get in touch are sealant applied over dusty or wet surfaces and new-build shower sealant that has already split.
For a small place like Blackmoor, the journey and access are planned in advance, and the work itself is the same as on any site.
Whatever the size of the job, it’s backed by our 12-month guarantee in Blackmoor and across Hampshire.
- Location
- Blackmoor (GU33)
- Wider area
- Hampshire
- Cover
- A year, on every job
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
How the visit works
We keep the work tidy and contained to the area we are working on, so you can get on with your day. The job generally takes anything from a few hours to several days, depending on the number of plots, and we tell you how long to leave it before we go. In a small place like Blackmoor, access is generally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We start by going through the snagging items or plot schedule with you.
- Every bit of the old builder’s sealant is cut out down to clean surfaces.
- We clean out the dust and grit left from the build.
- Primer goes on where the surface and product need it, then the new sealant.
- We tool every joint neatly and tell you when each area can be used.
How to prepare
- Move anything stored near the joints
- Mention if the joints have been sealed before
- Try not to wet indoor joints just before the visit
How to get a quote
Asking for a quote is easy: let us know the job and the location, and roughly how big it is. A few pictures by email make the job easier to understand.
Read more
Why deal with it now?
A tube of sealant from the DIY shop will not fix the cause: grit, unprimed surfaces and old layers underneath. Proper removal and preparation are what make it last. Around Blackmoor, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
Leaving a failed joint normally makes the job bigger, not smaller. If you’re not sure whether it needs doing, phone 0345 464 0079 or email us and we’ll give you an honest view and a quote.
What you get with us
- One-year guarantee on every job
- A sealant colour to suit the surroundings
- We are fully insured
- More than 20 years in sealant work
Read how sealant jobs are priced and our reviews.
When something else is needed
To be straight with you, some problems need a different trade:
- A tray or bath that isn’t properly supported, until it’s fixed
- Settlement cracks that need a surveyor
- Plumbing faults behind the sealant
If you’re not sure, just ring 0345 464 0079 or drop us an email and we will give you a straight answer.
Surfaces we seal
- Show homes
- Kitchens
- Skirting & floors
- Windows & doors
- Plot handovers
- Bathrooms & en suites
Looking after it afterwards
After the cure time, these simple habits help:
- Put sealant faults on your snagging list early
- Keep photos and emails about snagging items
- Act quickly if a seal starts to leak
- Keep water off fresh sealant until it has cured
Ventilation matters in a new home, which is still drying out. Use the extractor fan or open a window after showers so moisture doesn’t sit on the sealant.
Do not let the snagging period run out with sealant problems unreported. Once it ends, the repair may be down to you.
What affects the cost of new build mastic
You’ll get a clear quote before we start. It takes into account:
- Any working-time requirements on site
- The number of rooms or windows
- How much old sealant there is and how hard it is to remove
- How much there is to do
What you pay reflects the work, not guesswork. That is why we ask a few questions first.
Helping us quote
You do not need to know the technical terms. Just tell us:
- Pictures of the joints, sent by email
- Where the property is
- The problem you’ve noticed
- If it’s domestic, commercial or a hotel
If you are in Blackmoor and need new build mastic, ring 0345 464 0079 or email us. Tell us what the problem is and where, and you’ll get a clear quote before we start.
Different surfaces, different methods
Windows and doors
External mastic around new windows and doors is sometimes rushed or missed. We reseal it with a weatherproof, flexible sealant.
Bathrooms and en suites
Trays and baths in new builds settle as they’re used. The joint is stripped back before the new bead goes in.
What new build mastic looks like in Blackmoor
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.
If you’ve bought a new home near Liss station, the sealant around baths, showers and frames is worth checking in the first year or two. In and around Blackmoor, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Blackmoor is about 5 miles south-east of Alton, in Hampshire. Anywhere in GU33, our applicators can take on new build mastic. Our Hampshire coverage runs to 683 places, Blackmoor among them. There’s also a page for Portsmouth, roughly 21 miles from Blackmoor.
Here we cover the GU33 postcode area for new build mastic. Whether your property is on Blackmoor Road and Sotherington Lane or a nearby road, our applicators can take on the job. Other places close to Blackmoor include Woolmer (1 mile south-east), Greatham (1 mile south), Longmoor (2 miles south-east), Passfield (2 miles east) and Weavers Down (3 miles south-east). We also work in nearby towns such as Basingstoke (15 miles north-west), Farnborough (15 miles north), Fleet (13 miles north), Horndean (14 miles south-west), Aldershot (12 miles north-east) and Alton (5 miles north-west).
Around Blackmoor
Typical jobs here are in homes near Mill Chase Academy and the streets around them. The closest station to Blackmoor is Liss station, roughly 3.5 miles south of the centre. Other landmarks nearby include The Romany Museum (2.3 miles west) and Chase Community Hospital (1.4 miles north-east). Green spaces nearby include Selborne Hill and Deadwater Valley.
Also in Blackmoor
Blackmoor questions
Is Blackmoor within the area you cover?
Yes, Blackmoor is covered. We work across London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Can you do new build mastic in Blackmoor?
Yes, Blackmoor is within the area we cover. Our work covers London and the South East. You can call 0345 464 0079 or email us and tell us what needs doing, and we will give you a clear price.
Are you insured?
Yes. Full insurance covers our work, and we can confirm the details when we quote.
Can you reseal over the builder’s sealant?
No. The old sealant is cut out fully, then clean and prime the joint, before resealing.
Can I add another job to the visit?
Yes. More than one area can be quoted together.
Do I need to be at home?
It depends on the job. Inside work needs someone to give us access, while outside work can sometimes be arranged differently.
Where are you based?
Our base is Crawley, with over 20 years’ experience. Our area covers South East England, London and Scotland.
Do you work for developers?
Yes. Plot mastic and second-fix sealing for developers is part of our work. Send the schedule and any specification and we’ll give you a quote.