Mastic sealing for building owners and managing agents in Northney, Hampshire
Mastic sealing for building owners, managing agents and housing associations throughout Northney and nearby, by CSCS-carded applicators. CHAS accredited and fully insured.
- Open joints in brickwork or panels
- Mastic failing across several blocks on an estate
- Patchy repairs in mismatched sealant
Mastic sealing in Northney
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Mastic sealing in Northney, done properly
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’re a Constructionline member and CHAS accredited, and we carry public liability insurance. If you’re dealing with leaks at window and door perimeters and occupiers reporting cold air round windows, we can help, on communal entrances and stairwells, balcony and threshold joints and communal kitchens and washrooms alike. Most enquiries from Northney start with one failed joint and grow into a wider look at the building: we check the joints around it and give you an honest view of what needs doing now and what can wait.
Rural conversions near places like Northney often set modern frames into older stone, flint or brick. The mastic needs to suit an irregular masonry face and the look of the building.
Our workmanship is guaranteed for 12 months, wherever the site is. If a joint we sealed fails because of how it was installed, we come back and put it right.
- Place
- Northney (PO11)
- Wider area
- Hampshire
- Guarantee
- 12 months on every job
- Quote
- A fixed quote before we start
- Telephone
- 01277 525 020
- Updated
- 3 November 2026
What sealant work can’t fix
Some faults sit outside our scope, and we say so rather than covering them up:
- Materials that need asbestos testing before work
- Roof leaks, gutters or failed flashings that aren’t sealant joints
- Substrate edges that need repairing first
If in doubt, ring 01277 525 020 or send photos by email and we will say what we think before you book.
Where we work in Northney
- Window and door perimeters on blocks
- Balcony and threshold joints
- External wall and movement joints
- Communal kitchens and washrooms
- Shopfronts below residential blocks
- Communal entrances and stairwells
Places near Northney
Other services in Northney
Owners, agents and contractors
As a CHAS accredited contractor and Constructionline member, we’re straightforward to vet for your supplier list. Our insurance certificate can be sent along with the quote.
Main contractors use us as their sealant subcontractor on new-build and refurbishment projects. Programme, specification and site rules come first, and our applicators hold CSCS cards.
Northney: questions and answers
Can you quote for a block close to Warblington station?
Yes. Blocks of any size are within what we do. Photos of each elevation help us quote accurately.
Will you take on work at estates like Finchwood Farm Industrial Estate, close to Northney?
Yes. We cover Northney and the area around it, including industrial estates, business parks and retail parks such as Finchwood Farm Industrial Estate. Photos and a short description are enough for a first look.
What paperwork can you provide?
We’re CHAS accredited, a Constructionline member and carry public liability insurance. Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we will confirm with the quote.
How do you handle work on occupied blocks?
The work is planned around occupiers. We agree the programme so you can notify occupiers, and entrances stay in use.
When can the area be used after sealing?
Curing time varies by product, and we confirm it on the day, and flag anything to keep off until it has cured.
Which sealant will you use?
The specification comes first, if there is one. Without one, the joint decides: how much it moves, what it bonds to and whether it’s wet, trafficked or fire-rated.
Do you seal on top of existing sealant?
No. We cut the old material out and clean the joint back before sealing, because fresh silicone will not bond with aged silicone.
Looking after buildings in and around Northney
The sea is no more than about 1 mile from Northney. Sea-facing elevations take driven rain and salt, and their mastic shows it before the sheltered sides do. Northney is about 60 miles from central London. Commuter-belt towns tend to have plenty of managed blocks near stations and town centres, and window and balcony mastic on them tends to age at the same rate.
If you look after a block within reach of Warblington station, 1.7 miles to the north of Northney, frame and balcony mastic can be renewed on one programme. Property owners at sites such as Finchwood Farm Industrial Estate, 1 mile south of Northney, can have mastic renewed between lettings. Student accommodation around universities such as University of Portsmouth - Langstone Campus (4.1 miles south-west of Northney) is typically managed block by block, which suits a planned mastic programme.
Northney is about 3 miles south-east of Havant, in Hampshire. Commercial clients in Northney use us for work on mastic joints, as part of our coverage of Hampshire. Northney is one of 723 places we cover in Hampshire for mastic joints.
Work on mastic joints is covered throughout PO11, whatever the building. We cover commercial and managed buildings on Northney Lane, Spinnaker Grange and Northney Road and the roads nearby. Close to Northney, our area also takes in North Hayling (1 mile south), Warblington (1 mile north), Tye (1 mile south), Stoke (1 mile south-west) and Langstone (1 mile north-west). Nearby towns on our patch include Gosport (8 miles west), Havant (3 miles north-west), Fareham (10 miles west), Horndean (6 miles north), Waterlooville (5 miles north-west) and Petersfield (12 miles north).
Near you in Northney
In Northney, that means premises near Eames Farm and The Ship Inn, among other places. Northney’s nearest station is Warblington station, roughly 1.7 miles north of the centre. A little further out are Havant Museum (1.7 miles north-west) and Havant War Memorial Hospital (2.1 miles north-west). The countryside around Northney includes Hayling Billy.
On site: what to expect
Inspect, seal, sign off: that’s the shape of every visit. We inspect the joints and confirm what’s in scope, then the work is carried out to the specified product and detail, and we finish with a walk round so the work can be signed off. If others near Northney need work, visits can be combined. You’ll have a fixed quote before work starts.
- Each block or building is walked and the failed joints recorded with the likely cause.
- A fixed quote follows, split by block or building if that suits you.
- The programme is fixed with you, including dates you can pass on to residents or tenants.
- Failed mastic is removed and the faces taken back to sound, dry material.
- Backing rod and primer go in as the joint requires, then the new bead is placed and tooled.
- Each building is checked on completion and the work carries our 12-month guarantee.
Preparing the site
- Move anything stored against the joints
- Let building users know which areas are affected
- Have the specification and drawings to hand
Getting a fixed quote
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.
Related advice
When to bring in a specialist
The visible bead is only part of the job. Backing rod, primer where specified and a joint designed to move with the building are where general trades tend to cut corners.
Certain joints really need a specialist: for instance fire-rated seals that must match a tested detail, trafficked floor joints and external movement joints. A poor seal in places like these tends to cost more to put right later.
Why it’s worth doing now in Northney
Replacing mastic before water gets in is a planned job. Once water has tracked in, the repair list grows and occupiers notice. For buildings around smaller places like Northney, water damage can go unnoticed for longer, especially where a building isn’t used daily, which gives a failed joint time to do damage. Resealing early avoids that.
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 us?
- Colours chosen to suit frames, cladding or finishes where possible
- CSCS-carded applicators
- Failed material removed, not covered up
- Clear, fixed quotes
What sets the cost
Each job is priced on its own details. The things that drive the figure:
- The size and state of each joint
- Removal of failed or old sealant
- Any access equipment needed
- How much there is to seal
The specified product makes a difference, and so does the preparation, from cutting out to priming and backing rod. Access, phasing and site requirements come into it too.
Details that help us quote
We can often quote from photographs and a few details. It helps to include:
- Specification clauses that apply
- Rough lengths or quantities, or drawings if you have them
- The type of building and who uses it
- How the joints are reached, and at what height
A handful of photos and a postcode is the fastest way to a quote. Send them through the quote form, or give us a call on 01277 525 020 or email a schedule or drawings if you’d rather talk the job through.