Hampshire · England
Pennington New Build Mastic
Specialist new build mastic for Pennington: the right sealant, proper preparation and a neat finish. Call for a quick quote.
- Skirting joints opening in the first winter
- Sealant applied over dusty or wet surfaces
- Gaps opening as the house dries out and settles
DIY versus a professional finish
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly, so tell us about it when you ask for a quote.
The biggest DIY mistake is sealing over old sealant. Silicone doesn’t stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
About our new build mastic in Pennington
Dust is the enemy of new-build sealant. We clean every joint thoroughly and prime where the surface and product need it, so the sealant actually sticks instead of bonding to the dust. If you are dealing with shower seals failing in the first year or two and smeared, uneven beads picked up at snagging, we can put it right, whatever the surface.
In smaller places like Pennington, new homes tend to come as small developments or single plots. Each still needs its sealant and floor joints finished properly from day one.
We guarantee the work for a year. If something is not right with it in that time, tell us and we will put it right.
- Place
- Pennington (SO41)
- Wider area
- Hampshire
- Guarantee
- One year on every job
- Quotes
- A clear price before we start
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
How the job changes by surface
Bathrooms and en suites
New-build bathrooms and en suites are where sealant fails most often. We cut out the failed bead, clean and prime, and reseal with anti-fungal sanitary silicone.
Plot handovers
We work through plots to your schedule, sealing each room ready for handover. Each joint is cleaned and primed where needed so the sealant lasts.
Pennington questions
Can you help a landlord with a rental near Lymington Town station?
Yes. We work for letting agents and landlords as well as householders. You can call 0345 464 0079 or email us with the details for a clear quote.
Is Pennington within the area you cover?
Yes, Pennington is covered. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
How do I get a quote for new build mastic in Pennington?
Every job is different, so each one gets its own quote. For a quick quote, ring 0345 464 0079 or drop us an email with a short description of the job.
Do I need to be at home?
It depends on the job. Inside work needs someone to give us access, and for outside work we’ll agree access with you when we book.
Do you take on second-fix sealing for builders?
Yes. Second-fix sealing in bathrooms, kitchens, frames and floors is part of what we do. Good preparation keeps snagging to a minimum.
Do you remove the old sealant?
Yes. All of the old material is cut out and the joint cleaned.
What do you put in the joint?
It depends on the joint: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. Brands we use include Arbo and Everbuild.
Are you an approved applicator?
Yes. We hold ARBOMaster approved applicator status, and we are fully insured.
How it works
Good joint work is mostly preparation, and we don’t rush it. Every joint is cleaned and dried before new material goes in. All told, the work takes a few hours in a single home. In a smaller place like Pennington, 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 look at why each joint failed, including any movement.
- 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.
- The finished joints are checked and the cure times given.
Getting ready for the visit
- Move anything stored near the joints
- Let us know about parking restrictions
- Mention if the joints have been sealed before
Getting a quote
Getting a quote is simple: tell us what needs doing and where, and roughly how big it is. A few photos by email make the job easier to understand, and we will take it from there.
Read more
What affects the cost of new build mastic
There’s no set price list. The quote depends on:
- Any mould that needs treating
- How much old sealant there is and how hard it is to remove
- The number of rooms or windows
- The product the joint needs
Homes and businesses are quoted the same way: how much there is to do, how we reach it and what it needs. Call for a quick quote and we’ll explain what it covers.
Asking for a quote
There’s no need for technical detail. Just tell us:
- Whether it has been sealed before
- The address or postcode of the job
- Access, such as stairs, a lift or height
- The type of property
To get a quote, ring 0345 464 0079 or send us an email with the location and a short description of the problem. You will have a clear quote before we start.
Landlords, agents and businesses in Pennington
Housing providers, facilities teams and property managers book us too in Pennington and across Hampshire. We can quote a run of properties together, and we are fully insured.
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
When to call us in Pennington
A new house holds a lot of water from the build, and it dries out over the first couple of years. Drying timber shrinks and pulls joints apart.
Look out for any of the following:
- Untidy sealant flagged on a snagging list
- Beads laid onto grit and dust from the build
- Gaps opening as the house dries out and settles
- Leaking shower tray seals in a new home
Around Pennington, as everywhere, new build mastic is only as good as the preparation behind it.
What your quote should include
- What guarantee comes with the work
- Is the old sealant removed completely?
- Is VAT in the price?
- Whether the sealant suits the joint
Places near Pennington
Also in Pennington
Leave it or put it right?
It often makes sense to do all the sealant items on a snagging list together. You get one visit and one clear quote. In an older home around Pennington, damp from a failed joint can get into timber and plaster, which is far harder to put right than the sealant itself.
Leaving a failed joint normally makes the job bigger, not smaller. If you’re unsure, ring 0345 464 0079 or send us an email for an honest opinion and a quote.
Why choose Mr Mastic in Pennington
- Quality sealants from Arbo and Everbuild
- Experience in homes, commercial sites and hotels
- Colour agreed with you before work begins
- Fully insured
Read our cost guide and our reviews.
New build mastic around Pennington
Pennington is close to the coast. New homes near the sea put their outside mastic to work from day one, so it’s worth checking at snagging. The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For new homes near Lymington Town station, it’s worth checking the sealant early, while snags are still fresh.
Pennington is about 1 mile south-west of Lymington, in Hampshire. For new build mastic in and around Pennington, it’s easy to get a quote: please phone 0345 464 0079 or send us an email. We are based in Crawley and cover Hampshire. Our area takes in 683 places across Hampshire, from the larger towns to small villages. You can also see our page for Southampton, roughly 14 miles from Pennington.
Work in SO41 works the same way as everywhere else we cover. Whether your property is on Mead Road, Pound Road and Elm Avenue or a nearby road, our applicators can take on the job. Other places close to Pennington include Lymington (1 mile north-east), Lower Pennington (1 mile south), Walhampton (1 mile north-east), Everton (1 mile west) and Lymore (2 miles south-west). We also work in nearby towns such as Totton (12 miles north), Hythe (10 miles north-east), New Milton (5 miles west), Ringwood (12 miles north-west), Locks Heath (15 miles north-east) and Warsash (14 miles north-east).
Around Pennington
Around Pennington, our work takes us to homes and buildings near Pennington Infant School and White Hart Inn. The closest station to Pennington is Lymington Town station, roughly 1.2 miles north-east. Other landmarks nearby include St Barbe Museum and Art Gallery (0.9 miles north-east) and Yarmouth Castle (3.9 miles south-east). For a walk, there’s Lymington and Keyhaven Marshes Nature Reserve.