Portmore construction mastic
Our CSCS-carded applicators take on mastic packages for new-build and refurbishment projects in Portmore. Send details for a fixed quote.
- Bath and shower joints scraped during the final clean
- External joints sealed in damp or cold conditions that are now failing
- Frame perimeters left unsealed or poorly sealed
Construction mastic across Portmore
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
Building owners, agents and FMs in Portmore
Blocks and communal areas make up much of the work for housing associations and agents. We phase the work so people keep access, with each stage agreed with your site contact.
When you manage a building on behalf of an owner, clear figures and clear communication matter. We quote a fixed sum, confirm the scope and walk the finished work with you or your representative, plus a 12-month guarantee.
Construction mastic for commercial buildings in Portmore
Perimeter sealing outside needs a dry joint and the right temperature. Cold or damp mornings, frost and condensation on frames can all hold external sealing up, so we plan elevations with the forecast and the programme in mind. Internal areas can normally carry on while the outside waits. The enquiries we see most involve window and door perimeters that won’t pass inspection and external joints sealed in damp or cold conditions that are now failing, on window and door perimeters, sanitary and kitchen joints and internal decorators’ caulk. Sealant contractors, mastic applicators, sealant specialists: whatever the job title on the order, in Portmore it comes down to the same thing: failed joints cut out, faces prepared and the right sealant laid to the right depth.
Sites around smaller places like Portmore can be a fair drive from suppliers, so we come with everything the package needs, timed to the stage the job has reached. Send drawings or photographs and the programme and we’ll quote to suit.
We stand by our work: 12 months, guaranteed. It covers how we prepared and applied the sealant.
- Location
- Portmore (SO41)
- Region
- Hampshire
- Guarantee
- A 12-month guarantee
- Quotes
- Fixed quote, scope in writing
- Phone
- 01277 525 020
- Updated
- 3 November 2026
How the quote is worked out
A fixed quote reflects the actual work. It allows for:
- The total length or number of joints
- The size and state of each joint
- Which sealant the job calls for
- The site’s rules and procedures
The product called for affects the cost, as does the preparation each joint needs. Access, phasing and site requirements come into it too.
Details that help us quote
We can often quote from photos and a few details. It helps to include:
- The postcode of the building
- The asbestos register, for older buildings
- Whether the building will be occupied during the work
- Photos of the joints, close up and from further back
The quickest route to a quote is a few photos and the site postcode. Upload them with the quote form, or call the office on 01277 525 020 or email a schedule or drawings if you’d rather talk the job through.
What happens if it’s left?
Some packages split mastic across the window fitter, kitchen fitter and plumber. The result tends to be uneven finishes and arguments about who should seal what. One mastic subcontractor for the lot keeps it simple and a consistent finish. One visit to deal with every failing joint makes more sense than several trips to a place like Portmore, rather than one at a time. Photos of every joint help us quote for the whole job.
The work involved drives the cost: removing old material, preparing the joints, the product, the access and how the work is phased. Call for a quote.
Why us?
- A range of standard colours, depending on the product
- One number for every site we cover
- CSCS-carded applicators
- Fixed quotes based on photographs, drawings or a visit
Take a look at what affects the cost and our accreditations and insurance.
Mastic packages on Portmore sites
Portmore lies within about 1 mile of the sea. Facades and window perimeters on coastal schemes take more wind-driven rain, and salt air nearer the shore, and the sealant, primer and backing need choosing with that in mind. The South East is one of the drier parts of the UK. That doesn’t stop wet spells, or frosty starts that leave panels too damp to seal, which is why external dates are agreed with the site manager.
New wings at hospitals like Lymington New Forest Hospital, 1 mile south-west of Portmore, bring long runs of window and panel joints to seal. Historic houses such as Beaulieu Palace House (4.5 miles north-east of Portmore) are a reminder of the older buildings in the wider area, where sealing against old stone, brick or timber needs compatible products. When a school such as Southlands School is extended or refurbished, the mastic package is often squeezed into the holidays.
Portmore is about 2 miles north-east of Lymington, in Hampshire. Across the SO41 postcode area, it works the same way: send details, get a fixed quote, we seal, and the work is guaranteed. 723 places across Hampshire fall within our area, Portmore among them. Southampton is covered too, around 11 miles from Portmore.
We cover the SO41 postcode districts for mastic packages. For a building on Warborne Lane, Jordans Lane and Main Road or nearby, send details and we will quote for mastic packages. Sites close to Portmore are covered too, including Warborne (1 mile west), Pilley (1 mile north-west), Bull Hill (1 mile north), Pilley Bailey (1 mile north) and Walhampton (1 mile south). A short drive away, we cover Eastleigh (15 miles north-east), Fareham (15 miles east), Totton (10 miles north), Hedge End (14 miles north-east), Romsey (15 miles north) and Hythe (8 miles north-east).
Near you in Portmore
Locally, jobs take us to sites close to William Gilpin Church of England Primary School, Priestlands School and Walhampton Arms, among other places. The closest station to Portmore is Lymington Town station, about 1.1 miles south-west of the centre. Well-known places in the area include Lymington New Forest Hospital (1 mile south-west) and Yarmouth Castle (4.8 miles south). Green spaces nearby include Boldre Foreshore.
Site staff or a sealant specialist?
Site maintenance staff can often handle a short internal joint. The usual problems come from preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.
What you see is the finished bead, but most of the work is hidden. Backing rod, primer where specified and a joint designed to move with the building are easy to get wrong without experience.
Keeping the joints sound
Regular inspection catches problems early. Specifically:
- Keep finished joints away from paint, plaster and scrapers
- Don’t schedule sealing before decorators and flooring are done
- Allow flexibility for external sealing in damp or cold weather
- Stick to the specified sealant rather than a generic substitute
Tell the builders’ clean team which areas have new sealant. Scrapers used on frames and worktops can nick or lift a new bead.
Sanitary joints that fail early become defects soon after occupation. Water gets behind trays, vanity tops and panels. Proper preparation, with the right silicone first time, keeps it off the defects list.
How a job runs
Where the site stays busy, the work is phased so only one area is out of use at a time. Each section is protected, cleaned back and sealed, then reopened once the sealant allows before the next one starts. Jobs in and around smaller places like Portmore are normally planned as a single visit, so we ask for photographs and rough sizes first. That way the right products come on the day.
- We price from the drawings, specification and programme you send.
- You receive a fixed quote listing scope, products and phasing.
- 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.
- Before handover, snags are dealt with and the package is signed off under our 12-month guarantee.
What we need from you
- Send any specification or drawings in advance
- Arrange parking or a loading space
- Tell us which areas need to stay in use
Quotes
Specifications, drawings and tender packages are welcome with any enquiry, and we’ll price against exactly what is specified. For smaller jobs, photographs and a description will do.
Related advice
Questions we’re asked in Portmore
Is Portmore off your patch?
No. Places such as Portmore are covered as much as the big towns. We work across Greater London and the South East. We plan jobs in smaller places so return trips are kept to a minimum.
Our building in Portmore 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.
How many days will you need on site?
We plan the time on site around your programme and access. We will give you an estimate of time on site when we quote.
Can you seal external joints in wet or cold weather?
Weather matters for external sealing: the joint needs to be dry and within the product’s temperature range. We plan external elevations with that in mind.
How long do sealant joints last?
There isn’t a single answer, because life depends on how much the joint moves, how exposed it is and how it’s cleaned and used. Regular checks let you plan resealing before leaks or damage.
Can you clear a mastic snag list before handover?
Yes, we can. Share the list and photographs, and a fixed quote follows.
Will you stick to the specified products?
We use the product the specification names. If we think an alternative would suit better, we put it to you first.