Hampshire · England
Red Post Bridge New Build Mastic
Plot mastic for developers and snagging failed sealant in new homes for Red Post Bridge, backed by a one-year guarantee. Ask us for a quote.
- Gaps opening as the house dries out and settles
- Beads laid onto grit and dust from the build
- New-build shower sealant that has already split
How we handle new build mastic in Red Post Bridge
Dust is the enemy of new-build sealant. Each joint is cleaned of dust and primed where the product calls for it, so the sealant actually sticks. We work on show homes, plot handovers and kitchens, and common reasons people get in touch are messy sealant that spoils new finishes and sealant work across a run of new homes.
Somewhere as small as Red Post Bridge, new homes tend to be conversions, self-builds or a few houses rather than an estate. Each still needs its sealant and floor joints finished properly.
Our work is backed for twelve months, and the guarantee is the same wherever you are.
- Where
- Red Post Bridge (SP11)
- Wider area
- Hampshire
- Guarantee
- 12 months on all our work
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
How the visit works
When we arrive, we look over the joints with you first, so you know exactly what we are doing. We protect the surfaces around the joints before work begins. Most jobs take a few hours for most snagging lists, longer for a run of plots. In a small place like Red Post Bridge, access is usually the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First we work through your snagging list or plot schedule with you.
- We cut out every bit of the failed or messy sealant.
- 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.
- Finally, each room is checked and you’re given the cure time.
Preparing for the visit
- Where the joints are inside, avoid wetting them before we arrive
- On commercial sites, let us know about site rules
- Plan for the work area to be out of bounds to pets and children
How to get a quote
Want a quote for new build mastic? Please call 0345 464 0079 or send us an email with a few details. You will know what we plan to do, and what it will cost, before any work begins.
Advice
Nearby places to Red Post Bridge
Also in Red Post Bridge
FAQs for Red Post Bridge
I let a flat near Andover station. Can you help?
Yes, we work for letting agents and landlords. You can phone 0345 464 0079 or drop us an email with the address and a few details, and we’ll give you a fixed price before work begins.
Is Red Post Bridge in your area for new build mastic?
Yes, Red Post Bridge is within the area we cover. We work across London and the South East. Just call 0345 464 0079 or email us with a few details of the job, and we’ll send you a clear quote.
How long will you be here?
A typical job takes anything from a few hours to several days, depending on the number of plots. We’ll confirm how long when we quote.
Can you quote for more than one area?
Yes. Just list everything you need and you’ll get one quote.
Can you work on commercial sites?
Yes. Hotels, offices and other businesses use us.
What information do you need?
Where the job is, what the problem is and roughly how big it is. If you can, email a few photos.
Can you match the sealant colour to my new kitchen or bathroom?
That depends on what the joint meets: white or clear for most sanitary joints, colours for worktops, floors and frames. We will agree it with you first.
Should I go to my builder first?
Report it to the builder first while you’re covered. If it is not resolved, we’ll cut it out and reseal it.
Why it’s worth doing now in Red Post Bridge
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. Older cottages and farmhouses around Red Post Bridge can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Instead of a standard rate, we look at what your job involves: the amount of work, the old material and the access. You will know the price before we begin.
Why Red Post Bridge customers choose us
- Rated 4.9 stars on Google
- An ARBOMaster approved applicator
- Anti-fungal sanitary silicone in wet areas
- Sealant colour chosen to suit
Read what affects the cost or our reviews.
DIY versus a professional finish
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.
If you do try it yourself, take your time over the 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.
How we quote for new build mastic
Some jobs are bigger than they look, and some smaller. What affects the quote:
- Which sealant suits the joint
- How much old sealant there is and how hard it is to remove
- The number of rooms or windows
- Any mould that needs treating
There are no prices on our website, because the cost depends so much on the job itself. For a quick quote, please ring 0345 464 0079 or send us an email.
What we need to know
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- Whether it’s a home or a business
- Whether it has been sealed before
- What’s wrong with the joints now
- Photos by email, if that’s easy
Every job is quoted individually, so the first step is telling us about yours. Simply ring 0345 464 0079 or drop us an email and describe the job and send photos if you have them.
Signs you need new build mastic in Red Post Bridge
Fresh sealant can be knocked or cut by trades finishing off. A bead disturbed before it has cured may never seal properly.
The most common problems we see are:
- Beads laid onto grit and dust from the build
- Internal frame sealant that has split
- Cracked caulk along new skirting
- Smeared, uneven beads picked up at snagging
In and around Red Post Bridge, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Questions to ask before booking
- The length of the guarantee
- How much experience the applicator has
- Are they insured?
- What product goes in the joint
Different surfaces, different methods
Windows and doors
The gap between a new frame and its plaster reveal often opens up. We remove cracked sealant and apply a flexible one that suits the frame.
Plot handovers
Send us the schedule and any sealant specification for a quote. We seal bathrooms, kitchens, frames and floors to the agreed spec.
Joints and finishes in Red Post Bridge homes
The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
For new homes near Andover station, it’s worth checking the sealant early, while snags are still fresh.
Red Post Bridge is about 2 miles west of Andover, in Hampshire. Wherever you are in the SP11 postcode area, our applicators can take on new build mastic. Red Post Bridge is one of 683 places in Hampshire we cover. Southampton is on our list too, around 21 miles away.
All of SP11 is within our area for new build mastic, from the main roads to the quietest streets. New build mastic is available to properties on Newall Road, Andover Road and Red Post Lane and the roads around them. Neighbouring places we cover for new build mastic include Penton Corner (1 mile north), Weyhill (1 mile north-west), Penton Grafton (1 mile north), Penton Mewsey (2 miles north) and East Cholderton (2 miles west). Further out, we also cover Winchester (14 miles south-east), Romsey (15 miles south), Hyde (13 miles south-east), Tidworth (6 miles north-west), Weeke (13 miles south-east) and Stanmore (14 miles south-east).
Near you in Red Post Bridge
We work in homes and buildings around The Black Swan Public House, among other places. For rail, the closest station is Andover station, about 1.9 miles east. Nearby you will also find Andover Museum (2.6 miles east) and Andover War Memorial Hospital (2 miles north-east). Open spaces near Red Post Bridge include Mill Lake and Anton Lakes.
How to look after the new joints
So the new joints stay in good condition:
- Follow the cure time we give you
- Report sealant problems to your builder during the snagging period
- Photograph failed sealant before it’s redone
- Act quickly if a seal starts to leak
Keep the bathroom ventilated, especially in the first year. Use the extractor fan or open a window after showers to help keep mould away.
The sooner you deal with untidy or cracking sealant, the less there is to put right. Left alone, a small crack can become a leak over time.