Medway · England
Lower Upnor New Build Mastic
Problem with your new-build sealant joints in Lower Upnor? We cut out the old, prepare the joints and apply the right sealant.
- Worktop and upstand sealant coming away
- Second-fix sealing on new plots
- Beads laid onto grit and dust from the build
New build mastic in Lower Upnor, done properly
Across Lower Upnor, we work for both new-home owners and the builders handing those homes over. One shower or a whole phase of plots, the method does not change: remove, clean, prime where needed, then a neat new bead. If you have second-fix sealing on new plots and joints pulling apart as timber shrinks, we can help, on kitchens, windows & doors and skirting & floors alike.
Work in a small place like Lower Upnor just needs the journey and access planning, and the work itself is the same as on any site.
You’re covered for a year from the day we finish. If anything is not right with it, ring 0345 464 0079 or email us.
- Where
- Lower Upnor (ME2)
- Wider area
- Medway
- Cover
- A year, on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Different surfaces, different methods
Kitchens
Beside the sink, the joint takes water every day. We use a sealant suited to kitchens suited to the job.
Plot handovers
Plot mastic is carried out to the developer’s schedule. Each joint is cleaned and primed where needed.
Nearby places to Lower Upnor
Other services in Lower Upnor
Signs you need new build mastic in Lower Upnor
Baths and trays settle under load once the home is lived in. A bath sealed empty drops slightly when filled, straining the joint and the sealant may split.
Most people get in touch after spotting something like this:
- Internal frame sealant that has split
- Sealant work across a run of new homes
- Sealant that never bonded to the surface
- Cracks appearing as a new home settles
If you’ve bought a new home near Strood station, the sealant around baths, showers and frames is worth checking in the first year or two.
Comparing quotes
- Is the old sealant removed completely?
- Which colour the sealant will be
- What the quote includes, VAT included or not
- What guarantee comes with the work
New homes and floors in Lower Upnor
Lower Upnor 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. London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
In and around Lower Upnor, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Lower Upnor is about 2 miles north-east of Rochester, in Medway. Wherever you are in the ME2 postcode area, our applicators can take on new build mastic. 68 places in Medway are on our list. We also work in Chelmsford, about 23 miles from Lower Upnor.
We work across the ME2 postcode area for new build mastic and the streets around it. We cover properties on Galleon Way, Cutter Close and Schooner Walk. We also cover the places around Lower Upnor: Upper Upnor (1 mile south-west), Chattenden (1 mile north), Wainscott (1 mile west), Hoo St Werburgh (2 miles north-east) and Cooling Street (2 miles north). Within a short drive, we also cover Gillingham (3 miles south-east), Chatham (4 miles south), Rainham (5 miles south-east), Strood (3 miles south-west), Luton (3 miles south) and Park Wood (5 miles south-east).
Local landmarks in Lower Upnor
Typical jobs here are in homes near Former Ordnance Store At Chatham Gun Wharf, The Hundred of Hoo Academy and Waterfront University Technical College and the streets around them. You’ll also find Lower Lines Park (1.3 miles south-east) and The Ship pub (within half a mile east). For rail, the closest station is Strood station, roughly 1.6 miles south-west. A little further out are Upnor Castle (within half a mile south) and Pentagon Shopping Centre (1.9 miles south). The countryside around Lower Upnor includes Rede Common and Gad's Hill.
How we quote for new build mastic
For a quick quote, just ask. The main things that affect it are:
- How much old sealant there is and how hard it is to remove
- How many rooms, windows or areas are involved
- How easy the joints are to reach
- Which sealant suits the joint
Some things make a job bigger or smaller: 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.
What to tell us for a quote
What to tell us when you ask for a quote:
- Pictures of the joints, sent by email
- The problem you’ve noticed
- How many joints, rooms or windows are involved
- Whether it has been sealed before
Call for a quick quote, or email us if that is easier. Describe what needs sealing and we’ll explain what’s involved and give you a clear quote.
Aftercare tips
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Act quickly if a seal starts to leak
- Wipe joints with warm soapy water
- Follow the cure time we give you
- Record problems with dated photos
Wipe the sealant with warm soapy water. Avoid abrasive pads and strong solvents, which can damage the surface.
Early snagging is easier snagging. Small faults turn into leaks if left in a busy bathroom.
Your questions about new build mastic in Lower Upnor
Do you cover Lower Upnor for new build mastic?
Yes, Lower Upnor is within the area we cover. Our work covers London and the South East. You can ring 0345 464 0079 or send us an email and let us know what needs doing.
I let a flat near Strood station. Can you help?
Yes, rental work is part of what we do. Just call 0345 464 0079 or send us an email and tell us about the property, and we will give you a clear price.
Where are you based?
We are a Crawley-based firm, with over 20 years’ experience. We work across South East England, London and Scotland.
Should I go to my builder first?
While the snagging or warranty period runs, the builder should be your first contact. If it isn’t sorted, or keeps failing, get in touch with us.
Will there be a smell?
That depends on the sealant. Some smell for a while, some hardly at all, and any smell fades as they cure.
When is the best time to reseal in a new build?
That depends on the joint. A leaking shower or bath seal should be redone right away, while small cosmetic gaps can wait a while.
Is there a guarantee?
Yes, for a year. If anything is not right with the work within the year, let us know and we will sort it.
How long does the job take?
A typical job takes a few hours for most snagging lists, longer for a run of plots, including the preparation. We’ll confirm how long when we quote.
Honest limits
It helps to know what we cannot do:
- Deciding who is responsible under a builder’s warranty
- Damaged fittings that need replacing
- Baths and trays that move too much for sealant to cope with
If in doubt, ring 0345 464 0079 or send us an email and we’ll say what we think.
What we seal
- Windows & doors
- Plot handovers
- Show homes
- Bathrooms & en suites
- Skirting & floors
- Kitchens
DIY sealant or a professional job?
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and doesn’t move well, and the joint depth matters as much as the 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.
What happens on the day
Our applicators work methodically: protect, prepare, seal, tidy. Typically it takes a few hours for most snagging lists, longer for a run of plots and we leave things clean and tidy. In a small place like Lower Upnor, access is generally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- First, the list of joints is agreed from your snagging sheet or plot schedule.
- The failed sealant is removed completely.
- Joints are vacuumed and cleaned of building dust.
- We prime where needed and apply a sealant suited to each joint.
- Each bead is tooled and the cure times explained.
How to prepare
- Plan for the work area to be out of bounds to pets and children
- Tell us about any previous sealing or DIY attempts
- Move anything stored near the joints
How to get a quote
Asking for a quote is easy: tell us what needs doing and where and its rough size. A few photos by email make the job easier to understand, and we will take it from there.