Hampshire · England
Liss Forest New Build Mastic
Plot mastic for developers and snagging failed sealant in new homes for Liss Forest, backed by a 12-month guarantee. Call for a quick quote.
- Gaps behind new kitchen upstands
- Sealant that never bonded to the surface
- Cracks appearing as a new home settles
Keeping the joints in good condition
After the cure time, these simple habits help:
- Ventilate bathrooms well, especially in the first year
- Keep water off fresh sealant until it has cured
- Keep photos and emails about snagging items
- Do not wait for the house to settle if water is getting through
Leave the sealant for the cure time we give you before showering or bathing. Silicone is normally left for about a day before water reaches them.
The sooner you deal with untidy or cracking sealant, the less there is to put right. Small faults turn into leaks if left in a busy bathroom.
About our new build mastic in Liss Forest
Some new-home owners let the house settle before resealing. That makes sense for small gaps that are just cosmetic, but a seal that is letting water through needs doing now. If you have plot mastic for developers ahead of handover and sealant that never bonded to the surface, we can put it right, whatever the surface.
For a small place like Liss Forest, the journey and access are planned in advance, and the work itself is the same as on any site.
Each job carries a 12-month guarantee, large or small.
- Place
- Liss Forest (GU33)
- Wider area
- Hampshire
- Cover
- One year on every job
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Leave it or put it right?
If you are still in the builder’s snagging or warranty period, ask them to put it right first. If it keeps failing or isn’t dealt with, we can reseal it properly. Older cottages and farmhouses around Liss Forest can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
Commercial jobs are quoted on the same basis as homes: how much there is to do, 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.
Why Liss Forest clients choose us
- Over 20 years’ experience
- Tidy, careful work
- We never seal over old sealant
- Full insurance on every job
Take a look at how sealant jobs are priced or what customers say.
When something else is needed
It helps to know what we cannot do:
- Structural cracks in walls or ceilings
- Broken tiles or a split tray
- Your warranty claim itself, which is between you and the builder
If you are not sure, just phone 0345 464 0079 or drop us an email and we’ll give you a straight answer.
What we seal
- Skirting & floors
- Show homes
- Plot handovers
- Bathrooms & en suites
- Kitchens
- Windows & doors
What new build mastic looks like in Liss Forest
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Around Liss Forest, as everywhere, new build mastic is only as good as the preparation behind it.
Liss Forest is about 4 miles north-east of Petersfield, in Hampshire. For new build mastic in and around Liss Forest, please ring 0345 464 0079 or email us for a quick quote. We cover Hampshire from our Crawley base, Liss Forest included. 683 places in Hampshire are on our list. We also work in Portsmouth, about 19 miles from Liss Forest.
Every address in GU33 is covered for new build mastic, from the main roads to the quietest streets. We cover properties on Forest Road, Warren Road and Newfield Road and the roads around them. We also cover the places around Liss Forest: The Mint (1 mile south-east), Liss (1 mile south), West Liss (1 mile south), Greatham (1 mile north) and Rake (1 mile south-east). Further out, we also cover Havant (14 miles south), Fleet (15 miles north), Horndean (11 miles south-west), Aldershot (14 miles north), Alton (8 miles north-west) and Waterlooville (13 miles south-west).
Around Liss Forest
Locally, jobs take us to homes and businesses close to The Temple Inn. For rail, the closest station is Liss station, roughly 0.7 miles south-west. Other landmarks nearby include Chase Community Hospital (3.8 miles north) and The Romany Museum (3.7 miles north-west). Open spaces near Liss Forest include Liss Riverside Railway Walk North and Wheatham Hill.
How we quote for new build mastic
There’s no set price list, because no two jobs are the same. What we look at:
- Access and height
- Whether old sealant or filler has to be cut out
- Whether there’s mould to deal with
- The number and length of the joints
A few things move the cost up or down: how much old sealant there is and how stubborn it is, any mould to treat, and whether we need extra access for height. We take all of that into account in your quote.
Asking for a quote
To make quoting easier, please include:
- The problem you’ve noticed
- Pictures of the joints, sent by email
- How many joints, rooms or windows are involved
- Whether it has been sealed before
Need a quote? Please ring 0345 464 0079 or email us with a few details. We will explain what we’d do and send you a clear quote before we start.
What we do, step by step
Every visit runs the same way: we check the joints, protect the area around them, do the work and tidy away. Most jobs take anything from a few hours to several days, depending on the number of plots. For a village or hamlet like Liss Forest, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- 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.
- We clean off dust from the build and prime the surfaces where the product needs it.
- A sealant chosen for each area goes in and is tooled smooth.
- We check every joint and tell you how long each needs to cure.
Preparing for the visit
- Plan for the work area to be out of bounds to pets and children
- For business premises, tell us about site rules or sign-in
- Tell us if parking is tricky
Get a quote
For new build mastic in Liss Forest, call 0345 464 0079 or send us an email. Tell us what the problem is and where, and we will agree the price before any work begins.
Advice
Your questions about new build mastic in Liss Forest
Can you help a landlord with a rental near Liss station?
Yes, we work for landlords and agents. You can ring 0345 464 0079 or send us an email with the address and a few details, and we’ll give you a fixed price before any work starts.
Do you cover smaller places like Liss Forest?
Yes. Liss Forest is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
How long does the job take?
As a guide, most jobs take a few hours in a single home. Bigger jobs take longer, and we’ll say how long yours will take.
Are you insured?
Yes, we’re fully insured for every job we do.
Do you work through snagging lists?
Yes. Photos of each sealant item help us quote. If something is not sealant, we will say so.
Where are you based?
Mr Mastic is based in Crawley. We cover Liss Forest and the rest of Hampshire.
Do you use white or clear sealant?
The colour is chosen to suit the tiles, worktop or frame. Let us know your preference when you ask for a quote.
Is the work guaranteed?
Yes: twelve months. If there’s a problem with our work in that time, tell us and we will put it right.
Do you need new build mastic in Liss Forest?
On many sites, sealant goes on in the final rush before handover. Dusty, unprimed joints are common, so the bead never bonds properly.
Keep an eye out for any of the following:
- Leaking shower tray seals in a new home
- Kitchen sealant that has pulled off the wall
- Gaps between new skirting and floors
- Sealant applied over dusty or wet surfaces
For new homes near Liss station, it’s worth checking the sealant early, while snags are still fresh.
Comparing quotes
- When the joint can take water or movement
- The length of the guarantee
- What happens if they find a problem under the old sealant
- Who does the work, and how experienced they are
DIY versus a professional finish
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.
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.