Northbrook expansion joint sealing
Expansion and movement joint sealing in walls, decks and floors in Northbrook and across Hampshire. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.
- Expansion joints filled with dirt and stones
- Previous reseals laid over old sealant
- Damp inside where a wall movement joint has failed
Expansion joint sealing near Northbrook
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
How we handle expansion joint sealing in Northbrook
Mastic Doctor has sealed movement joints since 2005, for main contractors, FMs, managing agents and building owners. CHAS accredited, Constructionline member, CSCS-carded applicators and five million pounds of public liability insurance. Workmanship is backed by our 12-month guarantee. Site teams most often ask us about torn sealant in brick or block movement joints and sealant peeling off one face of the joint, across car park decks and ramps, precast concrete panel joints and blockwork control joints. One point of contact handles commercial sealant work in Northbrook from the first photographs to the final walk-round, whether it’s one building or several.
In and around smaller places like Northbrook, the concrete floors we see are often in converted farm buildings, small workshops and storage units. Whether it’s a farm store turned workshop or a storage unit, the joints need a product that suits the traffic.
Every job ends the same way: guaranteed. You get a 12-month guarantee on our workmanship, and we explain exactly what that covers when we quote.
- Location
- Northbrook (SO21)
- Wider area
- Hampshire
- Cover
- A 12-month guarantee
- Quote
- Fixed quote, scope in writing
- Telephone
- 01277 525 020
- Last updated
- 3 November 2026
Where floor joints take the most wear near Northbrook
Northbrook is about 56 miles from central London. Distribution warehouses and industrial estates are common around the motorway corridors that serve the capital, and their floor joints take forklift and pallet-truck traffic all day. Rainfall across the South East, Northbrook included, is lower than in many parts of the UK. External slab and deck joints still need a dry, clean joint to seal, and gritting in cold spells finds its way into open joints.
For a school such as Micheldever CofE Primary School, playground and building joints can be done in the holidays. Around Northbrook, each joint gets a filler or sealant matched to what crosses it and how much it moves.
Northbrook is about 7 miles north of Winchester, in Hampshire. Our applicators travel to Northbrook for work on movement joints, handled exactly as we handle every other area. Northbrook is one of 723 places in Hampshire on our list. Our Southampton page has more on work in that area (17 miles or so).
We take on movement joints across the SO21 postcode area. Sites close to Northbrook are covered too, including Micheldever (1 mile south-east), Stoke Charity (1 mile west), Hunton (2 miles west), Micheldever Station (2 miles north) and East Stratton (2 miles east). Bigger towns within reach include Basingstoke (11 miles north-east), Winchester (7 miles south), Eastleigh (13 miles south), Andover (10 miles north-west), Chandler's Ford (13 miles south-west) and Alton (13 miles east).
Near you in Northbrook
Around Northbrook, our work takes us to commercial buildings near Half Moon and Spread Eagle pub, among other places. The closest station to Northbrook is Micheldever station, roughly 2.1 miles north of the centre.
Why act early in Northbrook
On a car park, resealing joints in phases keeps the deck open. Phased work by bay or zone lets the rest stay in use, compared with a full closure. We agree phasing with you before work starts. For buildings around smaller places like Northbrook, water damage can go unnoticed for longer, especially where a building isn’t used daily, so a failed joint can leak for a while before anyone sees it. Resealing early avoids that.
The price depends on the quantity of joints, how much old material needs removing and how the joints are reached. Call for a quote when you are ready.
Why us?
- Public liability insurance in place
- A range of standard colours, depending on the product
- Our applicators hold CSCS cards
- Constructionline member
Take a look at what affects the cost and how we’re accredited.
What sets the cost
Before we quote, we look at:
- Backing rod, priming and other preparation
- Quantities, in metres or numbers
- The product specified
- Phasing around occupants
Quantities, awkward access and phased working all shape the price. So do site requirements such as inductions and permits, along with the time of year for external work.
What to include in your enquiry
A good diagnosis starts with the right details. Let us know:
- What the building is and how it’s used
- The asbestos register, for older buildings
- Any specification or named product
- Drawings or a marked-up plan, if available
Photos, drawings or a schedule of the joints are often enough for a fixed quote. Where a site visit makes more sense, we will arrange one.
From enquiry to sign-off
Tell us your site hours and access windows and we’ll plan around them. On the day, the work area is kept contained and tidy, and we check in with your contact before moving on to each new area. Smaller jobs around Northbrook can be grouped with others nearby. You will have a fixed quote before work starts.
- Photos, joint lengths and drawings come to us, or we visit.
- Joint widths and expected movement are checked against what the sealant can take and tell you if the design looks wrong for the movement.
- Every joint is cleared of the failed seal and any grit packed into it.
- Edges are checked, and we tell you if any need repairing before sealing.
- The right sealant goes in at the right depth, bonded to the two sides only.
- Each area is handed back after its cure time, under our 12-month guarantee.
What we need from you
- Send your site hours and access windows
- Clear stock, furniture or equipment away from the joints
- Point out parking and an unloading spot
Getting a fixed quote
Every job follows the same four steps: send details, get a quote, we seal, guaranteed. The first step is to call the office on 01277 525 020 or send details through our quote form with what you know.
Related advice
FAQs: Northbrook
What site paperwork comes with a job in Northbrook?
RAMS, insurance certificate, CSCS details: list what the site needs and we’ll confirm it with the quote. We’re CHAS accredited and a Constructionline member, with £5m public liability insurance and CSCS-carded applicators.
Do we have to stop operations in Northbrook while the joints are sealed?
In most cases the site keeps working. Joints are done in phases, a bay, aisle or deck at a time. Tell us which hours and entrances we can use and we’ll plan from there.
Can staff carry on working while you’re here?
Yes, as long as we plan it. We agree a sequence with your contact so just one area at a time is disrupted.
Will you quote for a small job?
Small jobs are welcome alongside larger packages. Photos and a description are enough to start.
Will you come and look before quoting?
It depends on the job. Straightforward work can often be priced from photographs and measurements, and bigger or more complex jobs normally get a visit.
Do you seal on top of existing sealant?
No. Sealing over old material is one of the classic causes of early joint failure, so it all comes out first.
Which product is best for expansion joints?
Whatever suits the joint and the specification. The quote states the sealant and its movement class.
Also near Northbrook
Other services in Northbrook
Different surfaces, different methods
Concrete and precast panel joints
Precast panels often have surface residues that sealant won’t bond to. Proper cleaning and primer where specified give a sound bond and check the edges for soundness as we go.
Cladding panel joints
Metal and composite panels shift considerably as temperatures change. The joints need a low-modulus sealant with enough movement capability, and we will confirm the colours available for the specified product.
Maintenance after handover
For the best life from the joints:
- Note which joints were done, when, and with what
- Keep traffic off new joints until the cure time is up
- Raise snow-clearing blades over deck joints where possible
- Inspect exposed joints once the cold weather has passed
Our workmanship on movement joints carries a 12-month guarantee. Record which product went into which joints in the building file, so the next reseal starts with the facts.
Rain gets into walls through torn brick and block movement joints. The first sign is often a damp patch indoors. Resealing promptly prevents internal damage.
Work for main contractors and building owners
Main contractors use us as their sealant subcontractor. We work to your programme, your specification and your site rules.
Planned maintenance programmes are welcome: resealing failed joints building by building, on a schedule that suits your budget. Sites in Northbrook can sit alongside others in a wider programme across Hampshire.