Mastic sealant contractors in Rowner
Need mastic sealing in Rowner? It’s simple: send details, get a quote, we seal, guaranteed.
- Damaged joints in communal entrances and corridors
- Patchy repairs in mismatched sealant
- Mastic failing across several blocks on an estate
Mastic sealing near Rowner
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
About our mastic sealing in Rowner
Managing agents and housing associations usually need paperwork before anyone starts. For documents, tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we’ll confirm with the quote. We are CHAS accredited and a Constructionline member, with public liability insurance. The enquiries we see most involve patchy repairs in mismatched sealant and damp patches beside frames, on balcony and threshold joints, window and door perimeters on blocks and communal entrances and stairwells. Looking for mastic applicators who cover Rowner? We’ve been sealing commercial buildings since 2005, CHAS accredited and a Constructionline member.
Owners with buildings around smaller places like Rowner often group mastic work so one visit covers several properties. One quote can cover a whole list of addresses.
Our workmanship is guaranteed for 12 months, in Rowner as everywhere else we work. If our installation lets you down in that time, we return and fix it.
- Place
- Rowner (PO13, PO14)
- Wider area
- Hampshire
- Guarantee
- 12 months on every job
- Price
- Fixed quote, scope in writing
- Phone
- 01277 525 020
- Last updated
- 3 November 2026
Planned mastic for Rowner portfolios
The sea is no more than about 2 miles from Rowner. Blocks and commercial buildings facing the sea take the most weather on their window perimeters and external joints, and they deserve more regular inspection. Rowner sits in one of the drier corners of the country, the South East. External mastic still waits for dry faces and the right temperature, and the sunniest, most exposed sides of a building typically need attention first.
If your remit includes a building such as Bridgemary School, frame and door mastic can be programmed for the holidays. Trustees of buildings like St Matthew's can bring frame and external mastic into a planned maintenance list.
Rowner is about 2 miles north-west of Gosport, in Hampshire. We send applicators to Rowner for mastic joints, handled exactly as we handle every other area. We work across 723 places in Hampshire, from busy centres to rural villages.
Commercial sites across PO13 and PO14 are covered. We cover commercial and managed buildings on Wych Lane, Camp Road and Keyes Road and the roads nearby. Sites close to Rowner are covered too, including Bridgemary (1 mile south-east), Peel Common (1 mile west), Crofton (1 mile west), Elson (1 mile south-east) and Lee-on-the-Solent (2 miles south-west). Nearby towns on our patch include Havant (9 miles east), Eastleigh (12 miles north-west), Horndean (9 miles north-east), Chandler's Ford (15 miles north-west), Hedge End (9 miles north-west) and Waterlooville (8 miles north-east).
Around Rowner
In Rowner, that means premises near Holbrook Primary School, The Green Dragon pub and Baycroft School and the streets around them. The nearest railway station is Fareham station, about 2.3 miles north of the centre. Other landmarks nearby include Gosport War Memorial Hospital (2.3 miles south-east) and Portchester Castle (2.9 miles east). Green spaces nearby include West of the River Alver and Portsdown Hill.
What happens if it’s left?
Looking at mastic during planned maintenance costs little. Leaving it until there’s a leak turns it into reactive work with less control over timing. For buildings in places like Rowner, one well-planned visit beats several small ones, so we’d suggest renewing all the joints that are going, not just the worst.
The work involved drives the cost: stripping out, preparation, sealing, access and phasing. Call for a quote and we’ll explain how it’s made up.
What you get with us
- Joints cleaned back to sound surfaces
- Work to your specification and the manufacturer’s guidance
- One contact handling all your sites
- Colours confirmed for the specified product
Take a look at what affects the cost and our accreditations.
Should maintenance staff do it?
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.
There’s also the paperwork. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and our CSCS-carded applicators are used to working under those rules.
After the work
Once the work is signed off, a little attention goes a long way:
- Make it easy for occupiers to report draughts
- Start inspections with the most exposed faces
- List the paperwork your organisation requires when you send details
- Include mastic in your cyclical inspections
Keep records of when each building was resealed. It helps plan the next round and shows what was done.
One failed perimeter normally means others on the same building are close, so it pays to look at the whole elevation. A planned reseal saves repeated visits.
When to call us in Rowner
Much failed sealant was laid on dirty, dusty or damp surfaces. Where the faces weren’t cleaned or primed as specified, the bead peels off one side.
Things that usually lead to an enquiry:
- Damp patches beside frames
- Open joints in brickwork or panels
- Repeated reactive repairs to the same buildings
- Occupiers reporting cold air round windows
For agents with blocks near Fareham station, which lies north of Rowner, a block-wide mastic programme deals with frames, balconies and entrances in one go.
Questions to ask before you book
- Will failed sealant be removed rather than covered?
- Will CSCS-carded applicators be on site?
- How they handle RAMS and site documents
- Health and safety accreditation such as CHAS
When something else is needed
Some faults sit outside our scope, and we say so rather than covering them up:
- Leaks through the frame itself rather than the perimeter
- Cracked or crumbling render, brick or stone at the joint edges (we will tell you if so)
- Asbestos-containing sealant, which we don’t remove
If in doubt, call the office on 01277 525 020 or send details through our quote form and we will say what we think before you book.
Joints and surfaces we work on
- External wall and movement joints
- Communal entrances and stairwells
- Shopfronts below residential blocks
- Window and door perimeters on blocks
- Communal kitchens and washrooms
- Balcony and threshold joints
Also near Rowner
What else we do in Rowner
Questions we are asked in Rowner
Is Brockhurst Gate Retail Park, near Rowner, within your area?
Yes. We cover Rowner and the area around it, including industrial estates, business parks and retail parks such as Brockhurst Gate Retail Park. Send details of the unit and the work through our quote form for a quick quote.
Can you quote for a block close to Fareham station?
Yes. Managing agents, landlords, property factors and housing associations are who this service is for. Photos of each elevation help us quote accurately.
How long do sealant joints last?
It depends on movement, UV and weather, cleaning, traffic and the product. Sealant joints are maintenance items, so inspect them regularly.
Is mastic sealing guaranteed?
There is a 12-month guarantee on our workmanship and we hold public liability insurance.
How do you choose the sealant?
A specification, where there is one, decides it. Without one, the joint decides: how much it moves, what it bonds to and whether it’s wet, trafficked or fire-rated.
What paperwork can you provide?
We are CHAS accredited, a Constructionline member and carry public liability insurance. Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we’ll confirm with the quote.
How soon can the area be used again?
That comes down to the sealant and the temperature. Some take light use quickly, others need longer to cure, so we will confirm the curing time on the day.
On site: what to expect
Our CSCS-carded applicators arrive with the sealants, primers and backing rod the job calls for. Joint faces are cleaned back to sound, dry surfaces, primer goes on where the manufacturer specifies it, and the sealant is tooled off neatly. Work in places the size of Rowner is planned as a single visit where we can. Photos with rough sizes let us arrive with everything needed.
- First we look at the mastic on each building and note what needs replacing.
- You get a fixed quote, priced per building where that helps your budgeting.
- Dates, areas and access are agreed so residents or tenants can be told in advance.
- We remove the old mastic completely and clean the joint faces back.
- Deep joints get backing rod, faces are primed if the manufacturer specifies it, then the joint is sealed and tooled.
- Each building is checked on completion and the work carries our 12-month guarantee.
Preparing the site
- Tell us which areas need to stay in use
- Have the specification and drawings to hand
- For older buildings, check the asbestos register before work
Ask for a quote
To get a fixed quote, give us a call on 01277 525 020 or email the details over. Our quote form is another easy route.