Facade and window perimeter sealing in Haslar, Hampshire
Our CSCS-carded applicators take on facade joint and window perimeter sealing on commercial buildings in Haslar and the surrounding area. Send details for a fixed quote.
- Gaps between rainscreen or cladding panels
- Damp patches beside frames after rain
- Sealant pulling away from frames or panels
Need facade sealing in Haslar?
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
Facade sealing in Haslar, done properly
Managing agents and owners in Haslar ask us to, we reseal perimeters across whole elevations or a handful of problem windows. Either way, the method is the same: cut out, clean, back, prime where needed and seal. Each job carries our 12-month guarantee. We work on shopfront frames, coping and flashing joints and window and door perimeters, and the failures we’re asked to look at most are weathered facade joints that have lost their grip and discoloured or dirty facade joints. Whether you call it commercial sealant work, mastic application or joint sealing, in Haslar it comes down to the same thing: failed joints cut out, faces prepared and the right sealant laid to the right depth.
Around smaller places like Haslar, building work normally means conversions of farm buildings, a few new houses or an extension to a hall or school. Each still needs a proper mastic package: window perimeters, facade joints and internal sealant to the specification.
A 12-month guarantee applies to all our work in Hampshire. If an installation problem shows up, give us a call on 01277 525 020 or email drawings and photos and we will arrange a return visit.
- Where
- Haslar (PO12)
- Wider area
- Hampshire
- Guarantee
- A 12-month guarantee
- Quote
- Fixed quote, scope in writing
- Call
- 01277 525 020
- Updated
- 3 November 2026
Surface by surface
Brick and stone facades
On masonry, the sealant has to suit a porous, textured surface. We avoid acetoxy silicone, which can stain some natural stone, and primers go on where specified.
Window and door perimeters
Perimeter joints move as frames expand and contract in the sun. The rod limits depth, leaving the bead able to flex.
Keeping the joints sound
After handover, these steps help:
- Plan facade sealing alongside redecoration
- Keep pressure washers away from fresh sealant
- Clear debris that holds water against joints
- Never let anyone seal over old sealant
Look at perimeter and panel joints as part of routine building checks. Watch for splits, gaps at the edges, hardening and discolouration.
Don’t wait for a full elevation to fail. Small repairs stop small leaks becoming large ones.
Quoting for work in Haslar
Sealant work doesn’t have a standard rate, because every site is different. What we look at:
- How much existing material needs removing
- Access and working height
- Specialist products, such as fire-rated or hygienic sealants
- Joint width, depth and condition
We don’t publish prices, since every building and every scope is different. For a fixed figure, call for a quote.
Details that help us quote
To price the job accurately, we need a clear picture of the site. Send us:
- The asbestos register, for older buildings
- A wide shot and a close-up of the area
- Whether the building will be occupied during the work
- Approximate linear metres or a joint schedule
A good quote starts with a clear picture: what’s there, how much of it, how we reach it and what’s specified. Share whatever details you have and we’ll fill any gaps with a visit.
General trades versus a specialist
Redoing a failed joint usually costs more than getting it right at the outset, since all of it has to come out and the faces be cleaned back again. For that reason, many FMs and contractors use a sealant specialist from the outset.
There’s also the paperwork. Many sites expect CSCS cards, RAMS and proof of insurance, and we will confirm the paperwork you need with the quote.
Diagnose, treat, sign off
At the end of each section, the masking comes off, the area is cleaned and every joint is checked, ready for your sign-off. Where the sealant needs time to cure before use, we tell you and sign the area. For work around Haslar, we aim to finish in one visit, so we ask for photographs and rough sizes first. That way the right products come on the day.
- We plan access and the order of elevations with the client.
- Weather and temperature are checked against the product’s limits.
- We remove the old bead and check the edges are sound.
- Joints are cleaned, primed if required and fitted with backing rod.
- Sealant is gunned in and tooled hard onto both faces.
- Once signed off, the work carries our 12-month guarantee.
Preparing the site
- Flag any permit to work we will need
- Warn occupants and staff about the work
- Point out parking and an unloading spot
Getting a fixed quote
The quickest route to a quote is a few photographs and the site postcode. Upload them with the quote form, or call the office on 01277 525 020 or email drawings and photos to discuss it first.
Read more
Facades, frames and programmes in Haslar
Haslar sits close to the coast, within about 1 mile. Schemes this close to the sea see their facade joints tested by wind and rain from the day they’re sealed, and the sealant, primer and backing need choosing with that in mind. The area within 2 miles of Haslar holds plenty of hotels. Hotel extensions and refits normally have to fit around bookings, so mastic dates are tight.
Recladding or extending a unit at a site like QinetiQ Haslar Marine Technology Park, under half a mile to the north of Haslar, brings panel joints and frame perimeters into the programme. When a college such as St Vincent College (1.5 miles north of Haslar) builds or refurbishes, the mastic package normally has to fit around students and staff. Hotels like Anglesey Hotel (0.7 miles west of Haslar) rarely close for long, so refurbishment mastic is phased floor by floor.
Haslar is about 2 miles south-east of Gosport, in Hampshire. Commercial clients in Haslar use us for work on facade joints, as part of our coverage of Hampshire. We work across 723 places in Hampshire, from busy centres to rural villages.
Postcode districts covered here: PO12. Buildings on Froude Road, Military Road and Monckton Road are within our area. We also cover Clayhall (1 mile north-west), Alverstoke (1 mile west), Portsmouth Point (1 mile north-east), Privett (2 miles north-west) and Portsea (2 miles north-east) for facade joints. Nearby towns on our patch include Havant (8 miles north-east), Fareham (6 miles north-west), Horndean (10 miles north-east), Hedge End (12 miles north-west), Waterlooville (8 miles north-east) and Purbrook (7 miles north-east).
Local landmarks in Haslar
In Haslar, that means premises near The Fighting Cocks pub, Bay House School and St Vincent College and the streets around them. Haslar’s nearest station is Portsmouth Harbour station, about 1.5 miles north-east. Well-known places in the area include Tricorn Centre (2.3 miles north-east) and Southsea Castle (1.8 miles east). Open spaces near Haslar include West of the River Alver.
Why deal with it now?
A few metres of new sealant compare well with replacing ceilings, linings or damaged stock. Water through a failed joint rarely stays where it starts, often turning up far from the joint. One visit to deal with every failing joint makes more sense than several trips to a place like Haslar, rather than one at a time. Photos of every joint help us quote for the whole job.
No two sites price the same: the joint sizes, the specified product, access and working hours each have a bearing. Send the details and a fixed figure follows.
Why appoint us
- Work carried out by CSCS-carded applicators
- Sealing commercial buildings since 2005
- A range of standard colours, depending on the product
- Failed material removed, not covered up
Read how commercial sealant jobs are priced or how we’re accredited.
Your questions answered
Can work at a site such as University of Portsmouth - North Zone fit around teaching?
Yes. We plan campus work around teaching, exams and residence turnarounds. Tell us which site documents you need, such as RAMS, our insurance certificate or CSCS details, and they’re confirmed with the quote.
Will you take on work at estates like QinetiQ Haslar Marine Technology Park, close to Haslar?
Yes, sites like QinetiQ Haslar Marine Technology Park are within our area, along with the rest of Haslar. To start, just call the office on 01277 525 020 or use the quote form with the unit, the joints involved and your access times.
How much does the work cost?
Each job is quoted on its own details. For yours, phone 01277 525 020 or use the quote form.
Are you fully insured?
Yes. Our insurance certificate can be sent alongside the quote.
Do your applicators hold CSCS cards?
Yes. We use CSCS-carded applicators, as many construction sites ask for.
Do you hold CHAS accreditation?
Yes. We’re CHAS accredited, we are a Constructionline member and we use CSCS-carded applicators.
Which sealant do you use on facades?
Low-modulus, neutral-cure silicone suits many facade and perimeter joints. Some joints call for hybrid, PU or polysulphide instead, as the specification or substrate requires.