Hampshire · England
Trotton Marsh New Build Mastic
New build mastic in Trotton Marsh from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Plot mastic for developers ahead of handover
- Internal frame sealant that has split
- Gaps opening as the house dries out and settles
Trotton Marsh: your questions answered
Do you work for landlords with property near Liphook station?
Yes, we work for landlords and agents. You can ring 0345 464 0079 or drop us an email with the address and a few details, and we’ll give you a fixed price before we start.
Is Trotton Marsh within the area you cover?
Yes, Trotton Marsh is covered. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Will there be a smell?
Sometimes, a little. It fades as the sealant cures.
Will you leave a mess?
We keep the work tidy. Nearby surfaces are protected, and we clear up when we are done.
Is it normal for sealant to crack in a new home?
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.
Can I do it myself?
Some simple jobs can be done by a careful DIYer. Most DIY failures come from sealing over old material, wet joints or too much sealant.
Where are you based?
We’re a Crawley-based firm. We work across South East England, London and Scotland.
Do you work for developers?
Yes. We take on second-fix sealant work across new plots. Good preparation keeps snagging to a minimum.
New build mastic for homes and businesses in Trotton Marsh
We work in new homes and on new-build sites across Trotton Marsh. One shower or a whole phase of plots, the method does not change: cut out, clean, prime where needed and reseal neatly. If you have gaps behind new kitchen upstands and leaking shower tray seals in a new home, we can help, on plot handovers, skirting & floors and kitchens alike.
Around Trotton Marsh, older homes often have timber floors that move through the year, so skirting and threshold joints need a flexible sealant rather than a rigid filler.
Whatever the size of the job, it’s backed by our one-year guarantee in Trotton Marsh and across Hampshire.
- Where
- Trotton Marsh (GU30, GU31)
- Region
- Hampshire
- Cover
- A year, on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Other services in Trotton Marsh
DIY versus a professional finish
If you’re set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it lifts and traps water and mould underneath. Everything old must be removed first.
Common problems we fix in Trotton Marsh
A new house holds a lot of water from the build, which takes a year or two to dry out. Drying timber shrinks and pulls joints apart.
Most people get in touch when they notice one of these:
- Plot mastic for developers ahead of handover
- Leaking shower tray seals in a new home
- Skirting joints opening in the first winter
- Smeared, uneven beads picked up at snagging
If you’ve bought a new home near Liphook station, the sealant around baths, showers and frames is worth checking in the first year or two.
What your quote should include
- Which sealant they’ll use, and why
- Whether VAT is included
- Whether they seal over old material or remove it
- When the joint can take water or movement
Why act early in Trotton Marsh
A quick bead over the top of the old sealant can look fine at first, but it can’t bond to what’s underneath. A lasting seal starts with removing the old one completely. Where a wall is exposed, as many are in small places like Trotton Marsh, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
Leaving a failed joint normally makes the job bigger, not smaller. If you are not sure whether it needs doing, phone 0345 464 0079 or send us an email for an honest opinion and a quote.
What you get with us
- Over 20 years’ experience
- Approved under the ARBOMaster scheme
- Trusted Arbo and Everbuild sealants
- Sanitary silicone with an anti-fungal additive in wet areas
Take a look at what affects the cost and our reviews.
What affects the cost of new build mastic
Every job gets its own quote. This is what makes a difference:
- The product the joint needs
- Whether there’s mould to deal with
- Whether old sealant or filler has to be cut out
- The number of rooms or windows
Commercial jobs are quoted on the same basis as homes: the amount of work, how we reach it and what it needs, plus any working-time requirements on site. Ask us for a quote and we will go through it with you.
Asking for a quote
There’s no need for technical detail. It helps if you can tell us:
- The rough size of the job
- Any access issues, like height or stairs
- Any previous sealing or DIY work
- The address or postcode of the job
Every job is quoted individually, so start by telling us what you need. Just phone 0345 464 0079 or drop us an email with the details and send photos if you have them.
How the job changes by surface
Plot handovers
Taking time over preparation reduces return visits. We clean out building dust before sealing.
Skirting and floors
Wet-area floor joints need a flexible seal. We seal them with a sealant suited to wet areas.
New build mastic in Trotton Marsh: local notes
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.
In and around Trotton Marsh, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Trotton Marsh is about 5 miles east of Petersfield, in Hampshire. Our applicators cover new build mastic for householders, landlords and businesses in Trotton Marsh and nearby, as part of our work across Hampshire. Our Hampshire coverage runs to 683 places, Trotton Marsh among them. Our Portsmouth page covers work nearby.
We work across the GU30 and GU31 postcode area for new build mastic. Other places close to Trotton Marsh include Borden (1 mile west), Milland (1 mile north), Chithurst (1 mile south-east), Rogate (2 miles south-west) and Rake (3 miles north-west). Within a short drive, we also cover Havant (13 miles south-west), Horndean (12 miles south-west), Alton (11 miles north-west), Waterlooville (13 miles south-west), Petersfield (5 miles west) and Purbrook (14 miles south-west).
Around Trotton Marsh
The nearest railway station is Liphook station, roughly 3.7 miles north of the centre. Nearby you’ll also find Midhurst Museum (4 miles south-east) and Midhurst Community Hospital (3.8 miles south-east). Open spaces near Trotton Marsh include Iping and Stedham Commons and Wheeler's Down.
How the visit works
Our applicators work methodically: protection first, then preparation, sealing and a tidy-up. For most jobs that takes anything from a few hours to several days, depending on the number of plots and we leave things clean and tidy. Somewhere like Trotton Marsh needs a little journey planning: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- Each joint is checked for movement before any work starts.
- We remove the failed sealant and clean the joints.
- Joints are dried and primed where the product calls for it.
- Baths are filled with water, then the new sealant is applied.
- We check every joint and leave you with the cure times.
Preparing for the visit
- Mention any tricky access
- Mention any leaks or damp you’ve noticed
- Mention any parking rules near the property
How to get a quote
For new build mastic in Trotton Marsh, ring 0345 464 0079 or drop us an email. Tell us what the problem is and where, and we will agree the price before any work begins.
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Aftercare tips
After the cure time, these simple habits help:
- Use the extractor fan every time you shower
- Report sealant problems to your builder during the snagging period
- Do not wait for the house to settle if water is getting through
- Wipe joints with warm soapy water
Wipe the sealant with warm soapy water. Keep scourers and harsh chemicals off it, which can damage the surface.
Early snagging is easier snagging. Left alone, a small crack can become a leak over time.