Hampshire · England
New-build mastic & snagging in Southwood, Hampshire
Professional new build mastic in and around Southwood, with every bit of old sealant taken out first and a 12-month guarantee.
- Gaps opening as the house dries out and settles
- Second-fix sealing on new plots
- Gaps behind new kitchen upstands
About our new build mastic in Southwood
If your new home has a leaking shower seal, open skirting joints or untidy sealant, we can help. If you’re still within the builder’s snagging or warranty period, tell them first, and if it is not put right, get in touch with us. We are often asked to deal with skirting joints opening in the first winter and internal frame sealant that has split, across show homes, skirting & floors and windows & doors.
Homes around Southwood range from older cottages to newer houses, and their floors range just as widely, from timber that moves with the seasons to tiles laid on concrete. Skirting and threshold joints need a sealant that suits the floor.
A one-year guarantee comes with the work, just as it does everywhere we cover.
- Location
- Southwood (GU14, GU51)
- Region
- Hampshire
- Guarantee
- A year, on every job
- Quotes
- A clear price before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Different surfaces, different methods
Bathrooms and en suites
Baths, showers, basins and trays in new bathrooms are the most common new-build reseal. We cut out the failed bead, clean and prime, and reseal with anti-fungal sanitary silicone.
Skirting and floors
As timber and screed dry, skirting and floors shift. We use a flexible product rather than caulk painted or coloured to suit.
New homes and floors in Southwood
Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
In and around Southwood, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint. If you’ve bought a new home near Fleet station, the sealant around baths, showers and frames is worth checking in the first year or two.
Southwood is about 1 mile west of Farnborough, in Hampshire. Southwood gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a one-year guarantee. Our Hampshire coverage runs to 683 places, Southwood among them. You can also see our page for Reading, about 13 miles away.
All of GU14 and GU51 is covered for new build mastic. Streets in the area include Fleet Road, Kennels Lane and Summit Avenue, and we cover them all. We also cover Cove (1 mile north), Farnborough (1 mile east), North Camp (2 miles east), Mytchett (3 miles east) and Aldershot (3 miles south-east). Within a short drive, we also cover Basingstoke (13 miles west), Alton (12 miles south-west), Yateley (4 miles north-west), Bordon (13 miles south), Hook (7 miles west) and Popley (12 miles west).
Landmarks near Southwood
Typical jobs here are in homes near National Aerospace Library, Ancells Farm Park and Cove School. The closest station to Southwood is Fleet station, roughly 1.5 miles west of the centre. Other landmarks nearby include Hart Shopping Centre (2.1 miles west) and Royal Army Dental Corps Historical Museum (2.6 miles south-east). Not far away are Aunt's Pool and Ball Hill.
Nearby places to Southwood
What else we do in Southwood
For landlords and businesses
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.
If you manage several properties in or around Southwood, several properties can go on one quote. Send us the addresses and the work at each.
What happens if it’s left?
It often makes sense to do all the sealant items on a snagging list together. It’s one visit, one quote and one set of cure times. Homes in smaller places like Southwood can face more weather, and failed outside joints let damp into walls. Inside, a split seal lets water into floors and panels just as it would anywhere.
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed. Call for a quick quote and we’ll explain what it covers.
Why book with us
- A choice of colours where the product allows
- Anti-fungal sanitary silicone in wet areas
- 180+ five-star Google reviews
- Every job guaranteed for a year
Read our cost guide or customer reviews.
Can I do it myself?
If you do try it yourself, take your time over the 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.
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
What sealant work can’t fix
Honest advice matters more to us than a booking, so here’s what new sealant won’t do:
- Baths and trays that move too much for sealant to cope with
- Damaged fittings that need replacing
- Plumbing faults behind the sealant
Not sure which it is? You can call 0345 464 0079 or email us and we will tell you honestly before booking.
What we seal
- Bathrooms & en suites
- Skirting & floors
- Kitchens
- Show homes
- Plot handovers
- Windows & doors
How it works
On the day, we start by going over the job with you, so you know exactly what we are doing. Surfaces next to the work are protected before any work starts. Most jobs take anything from a few hours to several days, depending on the number of plots. For a job in Southwood, we agree the time, the access and parking before the day. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- We start by agreeing which joints are on the list, from the snagging sheet or plot schedule.
- The old bead comes out in full, with no layer left behind.
- Surfaces are cleaned of building dust and primed where needed.
- We apply a sealant that suits each joint and tool it to a neat finish.
- Finally, each room is checked and you’re given the cure time.
How to prepare
- Mention any sign-in or site rules at work premises
- For indoor joints, keep the area dry beforehand if you can
- Tell us about any water getting in
Ask for a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job. Whenever you’re ready, ring 0345 464 0079 or send us an email.
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Southwood questions
Is Southwood within the area you cover?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Can you help a landlord with a rental near Fleet station?
Yes, we work for landlords and letting agents. Just call 0345 464 0079 or send us an email and tell us about the property, and we’ll send you a clear quote.
How long does new build mastic take?
A typical job takes anything from a few hours to several days, depending on the number of plots, including the preparation. We’ll confirm how long when we quote.
How much does new build mastic cost in Southwood?
The cost depends on the size of the job, access and how much old sealant has to come out. Ask us for a quote.
Will there be a smell?
Possibly a little. It fades as the sealant cures, and ventilation helps.
Will you just run a new bead over the existing one?
No. Sealing over old sealant looks fine for a few weeks, then lifts. All the old sealant comes out before work begins.
Can you work from my snagging list?
Yes. Send the list and a few photos of the sealant items, and we will quote. We will flag anything that needs another trade.
Do you take out the old sealant first?
Yes, always, and completely. New sealant will not bond properly to old, so any old material comes out before anything new goes in.
What affects the cost of new build mastic
Every job gets its own quote. This is what makes a difference:
- How easy the joints are to reach
- How many rooms, windows or areas are involved
- Mould in or behind the old joints
- When we can work, for business premises
A few things move the cost up or down: the old material and how easily it comes out, whether mould needs treating, and whether we need extra access for height. We take all of that into account in your quote.
Asking for a quote
Before you ask for a quote, have a think about:
- What’s wrong with the joints now
- The address or postcode of the job
- Any access issues, like height or stairs
- If it’s domestic, commercial or a hotel
Want a quote for new build mastic? Please call 0345 464 0079 or send us an email with a few details. We’ll explain what we’d do and give you a clear quote before work begins.