Construction and new-build mastic in Lower Upnor, Medway
Mastic packages for new-build and refurbishment projects in Lower Upnor and across Medway. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.
- Inconsistent sealant finishes from plot to plot
- Cracks opening in caulked internal joints
- Bath and shower joints scraped during the final clean
Construction mastic for businesses in Lower Upnor
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Construction mastic in Lower Upnor
Site managers want applicators who turn up with the right cards and paperwork. Our applicators are CSCS-carded, and we’re CHAS accredited and a Constructionline member, and we’re fully insured. RAMS, an insurance certificate and CSCS details can be confirmed with the quote if you tell us what you need. If you are dealing with bath and shower joints scraped during the final clean and perimeter gaps outside the sealant’s range, we can help, on cladding and panel joints, window and door perimeters and internal decorators’ caulk alike. Searching for sealant specialists in Lower Upnor? We have been sealing commercial buildings since 2005, CHAS accredited and a Constructionline member.
Construction in and around smaller places such as Lower Upnor is often barn conversions, small groups of houses or extensions to halls and schools. Perimeters, facade joints and internal sealant all need doing properly, however small the scheme.
The 12-month guarantee covers our workmanship: preparation, application and finish. Damage, later alterations by others and movement beyond what the joint was designed for sit outside it.
- Where
- Lower Upnor (ME2)
- Region
- Medway
- Cover
- A 12-month guarantee
- Quote
- Fixed quote, scope in writing
- Call
- 01277 525 020
- Updated
- 3 November 2026
General trades versus a specialist
A short, simple internal joint is often within reach of a maintenance team. The usual problems come from preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.
For a quick touch-up, site staff may be fine, but larger jobs are different: a specialist brings efficiency, a consistent finish and a 12-month guarantee.
Why it’s worth doing now in Lower Upnor
Refurbishments sometimes budget for new windows when the frames are sound and only the seal has failed. Sound frames often need only a new perimeter seal and that’s a far smaller job. We’ll say so if a frame itself is the problem. Older rural buildings around Lower Upnor move with the seasons, and rigid or tired sealant can’t keep up. A sealant with the right movement capability, correctly sized, lasts far better.
Access can matter as much as the joints themselves: joints within easy reach take less time than ones that need access equipment. Tell us how the joints are reached and call for a quote.
What you get with us
- 12 months’ guarantee on every job
- One number for every site we cover
- CHAS accredited
- Coloured sealants to suit the setting, where available
See how commercial sealant jobs are priced and our accreditations.
Our process
Working in a building that stays open takes some planning. We sign and contain the area we’re in, with routes through the building left open and move on in phases so staff and visitors can carry on around us. For a building around Lower Upnor, tell us how to find it and who will meet us. Send that with the details and we’ll confirm the plan with the quote.
- We price from the drawings, specification and programme you send.
- A fixed quote sets out the scope, the products and the sequence.
- You tell us what site paperwork you need, such as RAMS, an insurance certificate or CSCS details, and we confirm it with the quote.
- Areas are sealed plot by plot or floor by floor as the trades hand them over.
- Each joint is prepared, backed to depth and sealed in the product the specification names.
- We close out snagging and hand over with a 12-month guarantee.
What we need from you
- Tell us your opening times and when work is allowed
- Flag any permit to work we will need
- Have the specification and drawings to hand
Get a fixed quote
Need a figure for a tender or a budget? Send the scope and any drawings, and we’ll return a fixed quote that you can work with. For a chat about it beforehand, give us a call on 01277 525 020 or email drawings and photos.
Related advice
When something else is needed
Being straight saves everyone time. New sealant won’t cure:
- Fire-stopping design or sign-off (that’s for the designer, fire engineer and building control)
- Faulty frames rather than failed sealant
- Specifying the product where the designer hasn’t
If you’re not sure, just give us a call on 01277 525 020 or email drawings and photos and we will give you a straight answer before you book.
Where we work in Lower Upnor
- Internal decorators’ caulk
- Sanitary and kitchen joints
- Floor and skirting junctions
- Window and door perimeters
- Cladding and panel joints
- Brick and block movement joints
Cost factors for mastic packages
To price the job, we consider:
- Phasing around occupants
- Joint width, depth and condition
- How much there is to seal
- Site requirements such as inductions and permits
Cost follows what’s involved: removing old material, preparing the joints, the product, the access and how the work is phased. Call for a quote.
Details that help us quote
To price the job accurately, we need a clear picture of the site. Useful things to include:
- Whether an asbestos survey exists
- Rough lengths or quantities, or drawings if you have them
- The type of building and who uses it
- Access details, including height
To get a fixed quote, phone 01277 525 020 or send photos by email. Our quote form is another easy route.
After the work
A few simple habits keep the new joints working:
- Put any product change through the designer first
- Keep product details for future maintenance
- Get the mastic subcontractor involved early in the programme
- Ask cleaners to use soft cloths around fresh sealant
Any damage after we have finished should go on the snag list right away. Snags can be picked up in a planned close-out visit.
Snag items left to the last week put handover at risk. Clearing snags area by area spreads the work out, and avoids a rush.
Questions we’re asked in Lower Upnor
Is Lower Upnor too small for you to travel to?
No. Small places get the same service as large ones. London and every South East county are within our area. Send photographs and a list of what needs doing, and we’ll plan the job to need as few trips as possible.
Our building in Lower Upnor is near the coast: does that change the sealant?
It can. Wind-driven rain and, closer to the shore, salt air are harder on external joints. Product choice and preparation matter more, and sea-facing elevations are worth inspecting more often.
Do you do fire-rated sealing on new builds?
Fire-rated sealant can be included where it’s specified, installed to the product’s tested detail. The design and sign-off belong to the designer, fire engineer or building control.
Are you fully insured?
Yes. We are fully insured, and the certificate can go with your quote.
What hours do you work?
Mention the site’s hours and access windows in your enquiry, and we’ll schedule the work to suit. Our office runs Monday to Friday, 8am until 5pm.
What joints do you seal on a new build?
It depends on the specification, but frames, sanitary, kitchens, caulk where specified and snagging are typical.
Are you CHAS accredited?
We are CHAS accredited and a Constructionline member, and our applicators hold CSCS cards. Tell us what site paperwork you need and we will confirm with the quote.
Contractors’ notes for Lower Upnor
Lower Upnor lies within about 2 miles of the sea. Schemes this close to the sea see their facade joints tested by wind and rain from the day they’re sealed, which puts weight on correct joint sizing, priming and a sealant suited to the exposure. Lower Upnor sits in one of the drier corners of the country, the South East. Even so, frost and condensation on steel and glass are common on winter mornings, so the external programme keeps a little slack.
University estates such as University of Greenwich - Medway, 1.1 miles to the south-east of Lower Upnor, tend to have a rolling programme of new buildings and refurbishments, each with window perimeters and facade joints to seal. Hotel extensions and refits, at places such as King Charles Hotel, which lies south of Lower Upnor, normally run between busy periods, so the sealing is squeezed into short windows. Projects at colleges like MidKent College Gillingham Campus (to the south-east of Lower Upnor) tend to run to term dates, so the mastic is planned tightly.
Lower Upnor is about 2 miles north-east of Rochester, in Medway. Lower Upnor sits inside our coverage, with the same fixed quotes and 12-month guarantee as everywhere else. Across Medway, 54 places are covered, including Lower Upnor. Sites around London have their own page, about 27 miles away.
Commercial sites across ME2 are covered. Among the streets we cover are Galleon Way, Cutter Close and Schooner Walk, and sites on any of them can send details for a fixed quote. Nearby places we also cover include 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) for mastic packages. Bigger towns within reach include 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).
What’s near Lower Upnor
Recent enquiries here include premises near Former Ordnance Store At Chatham Gun Wharf, The Hundred of Hoo Academy and Waterfront University Technical College. Nearby too are Lower Lines Park (1.3 miles south-east) and The Ship pub (under half a mile east). For rail, the closest station is Strood station, about 1.6 miles south-west. A little further out are Upnor Castle (less than half a mile south) and Pentagon Shopping Centre (1.9 miles south). For a walk, there’s Rede Common and Gad's Hill.