Hampshire · England
New Build Mastic in Wherwell
New build mastic in Wherwell from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Gaps between new skirting and floors
- Second-fix sealing on new plots
- Gaps opening as the house dries out and settles
Aftercare tips
Looking after new joints is easy, and it makes a real difference:
- Get a leaking seal dealt with straight away
- Do not seal over failed sealant yourself
- Look at the sealant regularly in the first couple of years
- Open a window or run the fan after bathing
Leave the sealant for the cure time we give you before showering or bathing. Most silicones need around a day before water reaches them.
If a shower tray or bath seal splits in the first year, look for movement. Getting it resealed properly, and any movement checked, stops it recurring.
New build mastic for homes and businesses in Wherwell
For builders and developers, we work through plots to the schedule you give us. Bathrooms, en suites, kitchens, frames and skirting are sealed ready for handover with a sealant suited to each area. Typical jobs include beads laid onto grit and dust from the build and sealant work across a run of new homes, on show homes, windows & doors and kitchens.
For a small place like Wherwell, 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
- Wherwell (SP11)
- Region
- Hampshire
- Guarantee
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Places near Wherwell
Other services in Wherwell
Do you need new build mastic in Wherwell?
When the heating goes on in the first winter, the house dries fast. Skirting, frames and worktops pull away slightly.
Look out for these signs:
- Cracked sealant around new window and door frames
- Sealant work across a run of new homes
- Beads laid onto grit and dust from the build
- Shower seals failing in the first year or two
Around Wherwell, as everywhere, new build mastic is only as good as the preparation behind it.
What to look for in a quote
- How the joint is cleaned and prepared
- Whether they’re fully insured
- What guarantee comes with the work
- Whether the sealant suits the joint
FAQs for Wherwell
Do you cover Wherwell for new build mastic?
Yes, Wherwell is within the area we cover. Our work covers London and the South East. Just ring 0345 464 0079 or send us an email with a few details of the job, and we will send you a clear quote.
Is Wherwell within the area you cover?
Yes, we do. Our work covers London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Can you quote for more than one area?
Yes. Just list everything you need and you’ll get one quote.
Do I have to be there?
We need access to the joints, so we’ll agree that with you when we book. For inside work, that normally means someone being in.
I’m a tenant. Can you help?
Yes, but check with your landlord or agent first. Many landlords are glad to have it sorted.
Will it make a mess?
No. We work neatly, protect the area around the joints and tidy up afterwards.
Do you work for landlords and businesses?
Yes, often. Several properties can go on one quote.
Do you work for hotels and businesses?
Yes. Hotels, offices and other businesses use us, and we are fully insured.
What affects the quote in Wherwell
For a quick quote, just ask. The main things that affect it are:
- When we can work, for business premises
- Mould in or behind the old joints
- The type of sealant required
- The size of the job
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.
Helping us quote
You don’t need to know the technical terms. It helps if you can tell us:
- If it’s domestic, commercial or a hotel
- The problem you’ve noticed
- If someone has resealed it before
- The address or postcode of the job
We don’t publish a price list. Instead, we give you a clear quote for your job. To get started, phone 0345 464 0079 or email us.
Can I do it myself?
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
Landlord and commercial work in Wherwell
Letting agents and landlords in Wherwell can book us as well as householders. Sealant work between tenants is a simple way to keep a property in good order before the next move-in.
From a single let to a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a 12-month guarantee.
Why act early in Wherwell
A quick bead over the top of the old sealant can look fine at first, but it cannot bond to what’s underneath. A lasting seal starts with removing the old one completely. Around Wherwell, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
The cost reflects the work involved, not guesswork. That’s why we ask about the job first.
Why Wherwell clients choose us
- Any old sealant cut out fully, not covered over
- An ARBOMaster approved applicator
- You choose the colour before work begins
- Full insurance on every job
What we do, step by step
A visit follows a simple pattern: we check the joints, mask and protect the surrounding surfaces, do the work and tidy away. It usually takes a few hours for most snagging lists, longer for a run of plots. In a small place like Wherwell, access is usually the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We start by going through the snagging items or plot schedule with you.
- Every bit of the old builder’s sealant is cut out.
- Joints are vacuumed and cleaned of building dust.
- We prime where needed and apply a sealant suited to each joint.
- We tool every joint neatly and tell you when each area can be used.
Preparing for the visit
- Mention any parking rules near the property
- Mention any tricky access
- Plan for the work area to be out of bounds to pets and children
Get a quote
Asking for a quote is easy: let us know the job and the location and its rough size. Photos by email help us understand the job, and we will take it from there.
Read more
New build mastic around Wherwell
Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
For new homes near Andover station, it’s worth checking the sealant early, while snags are still fresh.
Wherwell is about 3 miles south-east of Andover, in Hampshire. Jobs in Wherwell get the same care as everywhere else we work: old sealant removed completely, careful preparation and a 12-month guarantee. Wherwell is one of 683 towns and villages in Hampshire we cover. Our Southampton page covers work nearby (17 miles or so).
Jobs for new build mastic in SP11 works the same way as everywhere else we cover. Streets in the area include High Street, Fair Piece and Beech Grove, and we cover them all. We also cover the places around Wherwell: Wherwell Wood (1 mile north-west), Cottonworth (1 mile south-west), Chilbolton (1 mile south), Fullerton (1 mile south-west) and South Harewood (1 mile north-east). Within a short drive, we also cover Winchester (9 miles south-east), Eastleigh (14 miles south), Andover (3 miles north-west), Chandler's Ford (13 miles south), Romsey (12 miles south) and Hyde (9 miles south-east).
Near you in Wherwell
Locally, jobs take us to homes and businesses close to White Lion Public House and Longstock Park, among other places. The nearest railway station is Andover station, about 3.7 miles north-west of the centre. Well-known places in the area include Andover Museum (3.3 miles north-west) and Andover War Memorial Hospital (4 miles north-west). Not far away are Mill Lake and Anton Lakes.