Hampshire · England
Cowplain New Build Mastic
Specialist new build mastic for Cowplain: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Gaps opening as the house dries out and settles
- Leaking shower tray seals in a new home
- Kitchen sealant that has pulled off the wall
Should I try it myself first?
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
New build mastic in Cowplain, done properly
A new build should have a neat, sound bead at every joint. When the finish is smeared, patchy or already cracking, it’s worth putting right early, before water gets into the floor or walls. Common call-outs are for gaps between new skirting and floors and beads laid onto grit and dust from the build, on plot handovers, skirting & floors and kitchens.
In and around Cowplain, floors range from older timber boards to tiles and newer finishes, each moving in its own way. Skirting and threshold joints need a sealant that suits the floor.
All our work is covered by our one-year guarantee, wherever you are in Hampshire.
- Place
- Cowplain (PO8, PO7)
- Region
- Hampshire
- Cover
- One year on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Places near Cowplain
Also in Cowplain
Your questions about new build mastic in Cowplain
Do you cover Cowplain for new build mastic?
Yes, Cowplain 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’ll give you a clear quote.
Will you come out to Cowplain?
Yes, we do. Our work covers London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
How long should I leave it?
It depends on the product. We tell you how long to leave it before we go.
How long will you be here?
It depends on the size of the job, but most jobs take a few hours in a single home. We will tell you when we quote.
Does someone need to be in?
That depends on where the joints are. For work indoors, someone needs to let us in, while outside work can sometimes be arranged differently.
Can landlords and businesses book you?
Yes. We work for householders, landlords, letting agents, businesses and hotels.
Is there a guarantee?
Yes. All our work carries a one-year guarantee.
Do you work through snagging lists?
Yes. Send us the sealant items on the list, with pictures if you can and we’ll give you a quote. We’ll tell you if anything on it is not a sealant job.
What happens on the day
At the end, we look at the finished work together and tell you how long to leave it. The visit itself normally takes a few hours in a single home, depending on the amount of work. In a smaller place like Cowplain, parking is seldom the issue; lanes, gates and long drives are worth mentioning. For outside work, side access and the height of the joints help us plan.
- We go through the snagging list or plot schedule and agree the joints to do.
- Failed or untidy sealant is cut out completely.
- Surfaces are cleaned of building dust and primed where needed.
- A sealant chosen for each area goes in and is tooled smooth.
- Each area is checked and left with its cure time.
Before we arrive
- Clear the area around the work
- On commercial sites, let us know about site rules
- Mention if the joints have been sealed before
How to get a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job. When it suits you, ring 0345 464 0079 or drop us an email.
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Quotes for new build mastic in Cowplain
The quote reflects the job in front of us. We look at:
- Whether there’s mould to deal with
- How many rooms, windows or areas are involved
- The old material and how stubborn it is
- How much there is to do
No two jobs are quite the same, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all play a part.
Helping us quote
When you contact us, these details help:
- Where the property is
- Any previous sealing or DIY work
- Roughly how big the job is
- Pictures of the joints, sent by email
For a quick quote, get us on the phone, or email us if that’s easier. Tell us about the joints that need doing and we’ll talk you through the work and send you a clear quote.
What sealant work can’t fix
In fairness, there are a few things sealant won’t fix:
- Cracking that points to a structural problem
- Damaged fittings that need replacing
- Deciding who is responsible under a builder’s warranty
Not sure which it is? You can phone 0345 464 0079 or email us and we’ll tell you honestly before you book.
Where we work in Cowplain
- Windows & doors
- Kitchens
- Skirting & floors
- Show homes
- Bathrooms & en suites
- Plot handovers
New homes and floors in Cowplain
Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
In and around Cowplain, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Cowplain is about 1 mile south-west of Horndean, in Hampshire. Every kind of property in Cowplain can book us for new build mastic, old or new, large or small. Every job comes with our 12-month guarantee. Across Hampshire, we cover 683 places, Cowplain among them. We also work in Portsmouth, about 7 miles from Cowplain.
Every address in PO8 and PO7 is covered for new build mastic. Local streets include Milton Road, King's Road and London Road. We also cover the places around Cowplain: Hart Plain (1 mile south-west), Waterlooville (1 mile south), Soake (1 mile west), Furzeley Corner (2 miles west) and Purbrook (2 miles south). We also work in nearby towns such as Gosport (9 miles south-west), Havant (3 miles south-east), Eastleigh (15 miles west), Fareham (8 miles south-west), Hedge End (12 miles west) and Petersfield (8 miles north-east).
What’s near Cowplain
Typical jobs here are in homes near The Cowplain School, among other places. Cowplain’s nearest station is Rowlands Castle station, about 3 miles east. A little further out are Havant Museum (3.9 miles south-east) and Havant War Memorial Hospital (3.5 miles south-east). Green spaces nearby include Windmill Hill and Southmoor Nature Reserve.
When to call us in Cowplain
If plaster or screed was still damp when it was sealed, the bond suffers. Site programmes don’t always leave time for joints to dry first.
If you can see any of these, it’s time to have the joints looked at:
- Kitchen sealant that has pulled off the wall
- Gaps between new skirting and floors
- Shower seals failing in the first year or two
- Smeared, uneven beads picked up at snagging
For new homes near Rowlands Castle station, it’s worth checking the sealant early, while snags are still fresh.
Before you book anyone
- How much experience the applicator has
- Is the old sealant removed completely?
- What the quote includes, VAT included or not
- How long the guarantee is
Looking after it afterwards
Good habits help new joints last longer. A few tips:
- Raise failed sealant with the developer while you are covered
- Do not seal over failed sealant yourself
- Wipe joints with warm soapy water
- Do not wait for the house to settle if water is getting through
Watch the joints as the house settles. Small gaps can appear as the house dries and can be resealed later.
If a shower tray or bath seal splits in the first year, look for movement. Have it resealed, and the tray or bath checked, before it gets worse.
Why deal with it now?
For developers, getting the sealant right first time saves return visits. Snagging visits for failed sealant cost time on every plot, and they’re avoidable with good preparation. Around Cowplain, water from a failed joint in an older home can soak into timber and plaster, which is far harder to put right than the sealant itself.
There are no prices on our website, because each job is priced on what it involves. For a quick quote, please call 0345 464 0079 or email us.
Why book with us
- We agree the colour with you first
- Domestic, commercial and hotel work
- Full insurance on every job
- 180+ five-star Google reviews