Hampshire · England
New-build mastic & snagging in Gilbert Street, Hampshire
Our applicators work in Gilbert Street on plot mastic for developers and snagging failed sealant in new homes. Old sealant removed completely, joints prepared properly.
- Joints pulling apart as timber shrinks
- Frame joints opening as the plaster dries
- Smeared, uneven beads picked up at snagging
New homes and floors in Gilbert Street
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
For jobs in and around Gilbert Street, choosing the right material for each joint is as important as a tidy finish.
Gilbert Street is about 6 miles south-west of Alton, in Hampshire. Every kind of property in Gilbert Street is covered for new build mastic. The work is guaranteed for a year. Our Hampshire coverage runs to 683 places, Gilbert Street among them. For nearby work, see our Southampton page (18 miles or so).
We cover every part of the SO24 postcode area for new build mastic and the streets around it. You will find streets such as Andrew's Lane, Gilbert Street and Swelling Hill, all of which we cover. Nearby, we also carry out new build mastic in Ropley (1 mile south-west), Kitwood (1 mile north-east), North Street (1 mile north-west), Charlwood (1 mile south-east) and Ropley Dean (1 mile west). Within a short drive, we also cover Basingstoke (12 miles north), Winchester (11 miles west), Eastleigh (15 miles south-west), Horndean (13 miles south), Alton (6 miles north-east) and Waterlooville (14 miles south).
Landmarks near Gilbert Street
A little further out are Barton Castle (4.1 miles north-west) and Alton Community Hospital (4.8 miles north-east). The countryside around Gilbert Street includes Shutts Copse and Red Hill.
About our new build mastic in Gilbert Street
A new build should have a neat, sound bead at every joint. Smeared, patchy or cracked sealant is worth sorting early, before water reaches anything behind it. We work on show homes, skirting & floors and bathrooms & en suites, and people most often call us about smeared, uneven beads picked up at snagging and shower seals failing in the first year or two.
For a small place like Gilbert Street, the journey and access are planned in advance, and once on site, the job is the same as anywhere.
There’s a 12-month guarantee on every job, large or small.
- Place
- Gilbert Street (SO24)
- Region
- Hampshire
- Guarantee
- A year, on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Gilbert Street questions
Is Gilbert Street in your area for new build mastic?
Yes, Gilbert Street is within the area we cover. We work across London and the South East. You can call 0345 464 0079 or send us an email and let us know what needs doing, and we’ll give you a clear quote.
What guarantee comes with new build mastic in Gilbert Street?
All our work, in Gilbert Street and everywhere else, comes with a 12-month guarantee. We are also fully insured and ARBOMaster approved.
Where do you work from?
Our base is Crawley. We work across South East England, London and Scotland.
How much does new build mastic cost in Gilbert Street?
The cost depends on the size of the job, access and how much old sealant has to come out. Ask us for a quote and we’ll talk you through it.
Does someone need to be in?
We need access to the joints, so we will agree that with you when we book. Indoors, that usually means someone at home.
Is it worth resealing while the house is still settling?
That depends on the joint. Failed seals in wet areas need doing now, while small cosmetic gaps can wait a while.
What colour sealant will you use?
We use white, clear or a colour to suit the finishes. Let us know your preference when you ask for a quote.
How long before the joint can be used?
That depends on the sealant used, so follow the cure time we give you when we finish.
When something else is needed
Some problems need a builder, plumber or other trade rather than us:
- Disputes or warranty claims with your builder
- Plumbing faults behind the sealant
- Damaged fittings that need replacing
Not sure which it is? You can call 0345 464 0079 or send us an email and we will tell you honestly.
What we seal
- Kitchens
- Skirting & floors
- Show homes
- Bathrooms & en suites
- Plot handovers
- Windows & doors
What happens on the day
A visit follows a simple pattern: we check the joints, protect the area around them, do the work and clear up. Most jobs take a few hours in a single home. Somewhere like Gilbert Street needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- First we work through your snagging list or plot schedule with you.
- We cut out every bit of the failed or messy sealant.
- We clean off dust from the build and prime the surfaces where the product needs it.
- A sealant chosen for each area goes in and is tooled smooth.
- We check every joint and tell you how long each needs to cure.
Getting ready for the visit
- Clear items away from the joints we’re working on
- Plan for the work area to be out of bounds to pets and children
- Let us know about parking restrictions
Get a quote
Need a quote? Please phone 0345 464 0079 or drop us an email and tell us about the job. We will explain what we’d do and send you a clear quote before we start.
Related advice
When to call us in Gilbert Street
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.
It’s worth asking for a quote if you see:
- Frame joints opening as the plaster dries
- Gaps opening as the house dries out and settles
- Messy sealant that spoils new finishes
- Second-fix sealing on new plots
Around Gilbert Street, as everywhere, new build mastic is only as good as the preparation behind it.
Comparing quotes
- Whether VAT is included
- What happens if they find a problem under the old sealant
- What insurance they hold
- Whether they seal over old material or remove it
DIY sealant or a professional job?
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is.
If you are set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
What affects the cost of new build mastic
The price is agreed before any work begins. It takes into account:
- Whether old sealant or filler has to be cut out
- How much there is to do
- Any mould that needs treating
- Access and height
The cost reflects the work involved, not a rough estimate. That’s why we ask a few questions first and agree the price before starting.
Helping us quote
Before you ask for a quote, have a think about:
- If it’s domestic, commercial or a hotel
- Whether it has been sealed before
- What the problem is, such as mould, gaps, leaks or cracking
- Pictures of the joints, sent by email
There’s no standard price list. Instead, we give you a clear price for your job. To arrange one, ring 0345 464 0079 or drop us an email.
For landlords and businesses
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. Several properties can go on one quote.
Whether it’s one flat or a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a one-year guarantee.
Why it’s worth doing now in Gilbert Street
For developers, getting the sealant right first time saves return visits. Every return visit for a failed seal takes time. In a small place like Gilbert Street, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
Combining jobs into one visit normally makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. We will give you a clear price for the lot.
Why us?
- Arbo and Everbuild products
- Anti-fungal sanitary silicone in wet areas
- More than 20 years in sealant work
- Colour agreed with you before any work starts
See what affects the cost and our reviews.