South East England and London
New Build Mastic in Portsmouth
Wherever you are in Portsmouth, our applicators can help with new build mastic. A clear quote before we start, and a one-year guarantee.
Where we work in Portsmouth
Plot mastic for developers and snagging failed sealant in new homes. Pick your town below to see the details for your area, and call or email us for a quick quote.
Biggest towns in Portsmouth
Other services in Portsmouth
- Gutter, fascia & soffit sealing
- Glazing & conservatory sealant
- Sand mastic for sash & case windows
- Bathroom & kitchen resealing
- Window & door mastic
- External & façade joints
- Remedial sealant & repairs
- Fire-rated sealant
- Floor & skirting joints
- Regrouting
- Commercial & hotel sealant
Postcode areas we cover
New build mastic across Portsmouth: what to expect
Snagging sealant properly means taking the failed bead out completely. Fresh silicone can’t bond to the old layer, so the joint is cut out, cleaned, dried and resealed. Typical jobs include kitchen sealant that has pulled off the wall and sealant work across a run of new homes, across windows & doors, kitchens and skirting & floors.
We keep the work tidy and contained to the area we are working on. The job usually takes anything from a few hours to several days, depending on the number of plots.
- Each joint is checked for movement before work begins.
- We remove the failed sealant and clean the joints.
- Joints are dried and primed where the product calls for it.
- New sealant goes in, with baths filled first so they’re at their heaviest.
- We check every joint and leave you with the cure times.
Pricing in Portsmouth
Rather than a set price list, we price the job in front of us: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
Why book with us
- White, clear, grey or another colour, product permitting
- Tidy, careful work
- 180+ five-star Google reviews
- A 12-month guarantee on all work
Ask for a quote
We quote each job on its own. Simply phone 0345 464 0079 or email us and describe the job, and photos are welcome.
Around Portsmouth
In Portsmouth, that means homes and buildings near Manor Infant School, Alexandra Park and St Wilfrid, among other places. You will also find The Druids Arms (less than half a mile north-east), The Portsmouth Academy (under half a mile south-east) and St Edmund's Catholic School (0.7 miles south-west). The nearest railway station is Fratton station, roughly 0.9 miles south. Well-known places in the area include Royal Portsmouth Hospital (0.7 miles south-west) and Charles Dickens Birthplace Museum (less than half a mile west). For a walk, there’s Milton Locks and Portsdown Hill.
New homes and floors across Portsmouth
Portsmouth has everything from older homes with timber floors to brand-new houses. Floors move and new buildings settle, so skirting and floor joints open up in both.
London and the South East are among the drier parts of the UK, though outside sealant still needs a dry, clean joint, so work across Portsmouth is planned around the weather. Portsmouth includes coastal places, where outside joints face more wind, rain and salt than they would inland. Joints on seaward walls tend to fail first.
Portsmouth: Around Portsmouth, as everywhere, new build mastic is only as good as the preparation behind it. If you’ve bought a new home near Fratton station, the sealant around baths, showers and frames is worth checking in the first year or two.
What sealant work cannot fix
To be straight with you, there are a few things sealant won’t fix:
- A tray or bath that isn’t properly supported, until it’s fixed
- Cracking that points to a structural problem
- Plumbing faults behind the sealant
Why deal with it now?
A tube of sealant from the DIY shop won’t fix the cause: dust, no primer and old sealant left in the joint. Proper removal and preparation are what make it last.
Questions to ask before you book
- What guarantee comes with the work
- How the joint is cleaned and prepared
- What the quote includes, VAT included or not
- Which sealant they’ll use, and why
Different surfaces, different methods
Kitchens
As a new house dries, worktops and walls shift a little, which opens gaps along the back. We reseal them with a flexible sealant.
Skirting and floors
Wet-area floor joints need a flexible seal. We seal them with a sealant suited to wet areas.
Work for landlords, hotels and businesses
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
Failed sealant is one of the commonest items on a check-out report. Several properties can be quoted together.
Can I do it myself?
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly.
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
Questions from Portsmouth
Does someone need to be in?
It depends on the job. Inside work needs someone to give us access.
Is it messy?
Tidy work is part of the job. We protect what’s around the joints.
Why has my new-build shower seal failed already?
A new house dries and settles for a year or two, and sealant is often applied quickly onto dusty surfaces. Either can make it fail early.
How long does the job take?
It depends on the size of the job, but most jobs take a few hours in a single home. We will give you a better idea when we quote.
What does new build mastic cost?
It depends on the job, so we quote each one individually. To get one, phone 0345 464 0079 or send us an email with a short description of the job.
Are you fully insured?
Yes. Mr Mastic is fully insured, with over 20 years’ experience in sealant work.
Will there be a smell?
That depends on the sealant. Some products have a noticeable smell, others very little.