Construction and new-build mastic in Baffins, Portsmouth
Mastic packages for new-build and refurbishment projects across Baffins, carried out by CSCS-carded applicators. Fully insured and CHAS accredited.
- Frame gaps too wide for sealant alone
- New external sealant already peeling away
- Cracks opening in caulked internal joints
Construction mastic for businesses in Baffins
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
Construction mastic in Baffins
The programme rarely stands still, so the mastic package has to flex with it. The sequence is set with the site team and updated as plots or floors are handed over and we don’t seal before other trades have finished in an area. Sealing too early only means coming back once others have damaged it. If you’re dealing with new external sealant already peeling away and bath and shower joints scraped during the final clean, we can put it right, whatever the surface. Looking for mastic applicators who cover Baffins? We’ve been sealing commercial buildings since 2005.
Conversions around smaller places like Baffins often join new frames to old masonry or timber, and the sealant at those junctions has to cope with two materials that move differently, in a colour the planners or architect are happy with.
We sign every job off with a 12-month guarantee. The promise is simple: if the work we did fails within twelve months, we return to fix it.
- Where
- Baffins (PO3, PO4, PO2)
- Wider area
- Portsmouth
- Cover
- 12 months on every job
- Quote
- A fixed quote before we start
- Phone
- 01277 525 020
- Last updated
- 3 November 2026
Questions we are asked in Baffins
Is a hospital such as St James Hospital somewhere you can work?
Yes. We work in healthcare settings as well as offices and schools. We follow the site’s permits, sign-in and infection-control procedures in every area.
Can work at a site such as University of Portsmouth - Langstone Campus fit around teaching?
Yes. We plan campus work around teaching, exams and residence turnarounds. Let us know which documents your site asks for, and we will confirm them alongside the quote.
Can you fit around our programme?
We work to your programme. Tell us the sequence and we will plan applicators around it so sealing follows the trades.
Can you follow the specification on our project?
Yes. We follow the specification, along with the manufacturer’s installation guidance.
What hours do you work?
Give us your site hours and any access windows in your enquiry, and we’ll schedule the work to suit. Our office runs Monday to Friday, 8am until 5pm.
What about RAMS and site documents?
Requirements differ from site to site, so tell us what you need and we will confirm it when we quote.
Will you come and look before quoting?
Photos, drawings or a schedule are often enough to quote. If the job needs a look first, we will arrange a visit.
Construction mastic in Baffins: the local picture
Baffins is within about 1 mile of the coast. Schemes this close to the sea see their facade joints tested by wind and rain from the day they’re sealed, so joint design, primers and product choice deserve extra care. Baffins is in the South East, one of the UK’s drier regions. Winter mornings still bring frost and condensation on frames and panels, so external mastic is timed for workable conditions and agreed with the site manager.
When units on a site such as Copnor Bridge Business Centre, less than half a mile to the west of Baffins, are refurbished or reclad, the panel joints and window perimeters are part of the mastic package. University estates such as University of Portsmouth - Langstone Campus (to the south-east of Baffins) tend to have a rolling programme of new buildings and refurbishments, each with window perimeters and facade joints to seal.
Baffins is about 1 mile east of Portsmouth, in Portsmouth. Commercial clients in Baffins use us for work on mastic packages, as part of our coverage of Portsmouth. Across Portsmouth, 19 places are covered, Baffins among them.
If you need construction mastic in PO3, PO4 and PO2, the process matches everywhere else we work: send details, get a quote, we seal, guaranteed. Among the streets we cover are Byron Road, James Road and Dover Road, and sites on any of them can send details for a fixed quote. Access to Baffins is via the A288, so getting applicators and materials to site is simple. Close to Baffins, our area also takes in Copnor (1 mile north-west), Kingston (1 mile south-west), Fratton (1 mile south-west), Portsmouth (1 mile west) and North End (1 mile north-west). Nearby towns on our patch include Wymering (3 miles north), Paulsgrove (3 miles north-west), Drayton (3 miles north) and Farlington (3 miles north).
Around Baffins
In Baffins, that means premises near The Baffins pub, St Edmund's Catholic School and Alexandra Park. For rail, the closest station is Fratton station, roughly 1 mile south-west of the centre. A little further out are The Bridge Shopping Centre (1.1 miles south-west) and Southsea Castle (2.4 miles south-west). The countryside around Baffins includes Portsdown Hill and Milton Locks.
When to call us in Baffins
On construction sites, joints usually fail early because of when they were sealed, not what was used. Sealing before decorators, flooring or other trades have finished leaves joints exposed to damage, so they end up back on the snag list.
Any of the following is a good reason to get the joints checked over:
- Window and door perimeters that won’t pass inspection
- A long mastic snag list close to completion
- Sealant knocked or painted over by other trades
- Old sealant on a refurbishment that needs stripping before new work
Extensions at sites like St James Hospital, 0.9 miles to the south-east of Baffins, typically sit beside working departments, and the mastic follows strict access rules.
What to look for in a quote
- How they handle RAMS and site documents
- Their public liability cover
- How joint depth will be controlled
- How they’ll work around occupants
What happens if it’s left?
Leaving mastic to whichever trade is fitting the element can look cheaper on paper. In practice it often means different standards, gaps in responsibility and snags nobody owns. One mastic subcontractor for the lot keeps it simple. A failed joint lets water into a building whatever its size. Early resealing avoids the damage that follows a leak.
A quote for mastic packages depends on how many there are, their condition and the access, plus any specification you’re working to. Ask us for a fixed quote.
Why appoint us
- Colour agreed before work starts
- Coloured sealants to suit the setting, where available
- Clear, fixed quotes
- A Constructionline member, so easy to vet
Cost factors for mastic packages
A fixed quote reflects the actual work. It allows for:
- How much existing material needs removing
- The size and state of each joint
- Access and working height
- The product specified
Whether it’s a single area or a whole estate, the same things set the price: what’s in scope, how we reach it, what’s specified and when it needs doing. Call for a quote, and you’ll have a fixed figure to work with.
What we need to price the job
Good information means a firmer quote. When you get in touch, include:
- The site address and postcode
- Photos of the joints, close up and from further back
- Asbestos survey details if the building is older
- Anything awkward about access or site hours
Let us know the site, the scope and your timescale, and a fixed quote will follow. The easiest way is to ring 01277 525 020 or send details through our quote form.
Our process
Before we leave any area, we remove the tape, clean down and inspect every joint. Where the sealant needs time to cure before use, we tell you and sign the area. If neighbouring businesses or buildings around Baffins need work too, visits can be combined. Mention the building’s opening times and we’ll work within them.
- We price from the drawings, specification and programme you send.
- A fixed quote sets out the scope, the products and the sequence.
- Any site paperwork you need (RAMS, insurance certificate, CSCS details) is confirmed 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.
Getting the site ready
- Confirm the product named in the specification
- Tell us which areas need to stay in use
- Tell staff and tenants when we will be in
Request a quote
Quotes are fixed against the scope you send, so the cost is agreed before work starts. To start the process, give us a call on 01277 525 020 or email a schedule or drawings.
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Doing it in-house
Using site staff can make sense for a small touch-up, but anything bigger is another matter: a specialist works through quantities efficiently, leaves a consistent finish and backs it with a 12-month guarantee.
Putting right a botched joint often costs more than sealing it well at the start, because the whole bead must be removed and the faces cleaned back again. For that reason, many FMs and contractors use a sealant specialist from the outset.
What the job involves on each surface
Window and door perimeters
Internal perimeters are typically sealed with a paintable product where decorating follows. We follow what’s specified, and colour-matched products can be used where the frame is on show.
External facade and movement joints
Brickwork, blockwork and panel movement joints need a sealant with the right movement capability. We set the depth with backing rod to avoid three-sided adhesion.