Greater London · England
Commercial sealant contractors in HA5
We cover every part of the HA5 postcode district, which takes in Hatch End, Pinner Green and Pinner. Every joint is properly prepared, with a 12-month guarantee.
Need sealant work in HA5?
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
Places in HA5
- Hatch End
- Pinner Green
- Pinner
- Eastcote
- Roxbourne
- Headstone
- Ruislip
- Ruislip Manor
- North Harrow
- Carpenders Park
- Rayners Lane
- South Oxhey
Services in HA5
- Construction and new-build mastic
- Mastic sealing for building owners and managing agents
- Commercial sealant contractors
- Industrial and floor joint sealing
- Commercial washroom and wet-area sealing
- Fire-rated sealing and fire stopping
- Coloured and colour-matched sealant
- Expansion and movement joint sealing
- Facade and window perimeter sealing
- Every service
Tell us what needs doing and your postcode for a fixed quote: call the office on 01277 525 020 or email us.
How commercial sealant contractors works in HA5
A reseal stands or falls on the preparation underneath it. Silicone has no grip on cured silicone, so the failed bead is cut out completely, then both faces are cleaned back to sound, dry material with no dust or grease on them. Primer is used wherever the manufacturer calls for it on that surface and the joint depth is controlled with backing rod. We work on external facade joints, movement joints in walls and floors and washrooms and tea points, and what we are called in for most is movement joints packed with grit and debris and damp patches where an external joint has failed.
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.
- Send details through our quote form, or ask for a site visit.
- We diagnose the cause of failure and price a fixed scope.
- Work is phased around your occupiers where areas need to stay in use.
- Old sealant is cut out completely, never sealed over.
- Each joint gets a suitable sealant, laid to depth and tooled.
- A final walk-round, then the 12-month guarantee applies.
Pricing in HA5
We don’t publish prices, because the scope varies so much from one building to the next. For a fixed figure, call for a quote and we will price your job on its own details.
Why choose Mastic Doctor
- Colour agreed before work starts
- CSCS-carded applicators
- Over 20 years of commercial sealing
- A range of standard colours, depending on the product
Ask for a quote
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 drawings and photos to discuss it first.
What’s near Hatch End
We work on buildings around The Moon & Sixpence pub, Nower Hill High School and Pinner Park Primary School, among other places. Also close by are Pinner Baptist Church (less than half a mile south-west) and Headstone Manor Recreation Ground (0.9 miles south-east). For rail, the closest station is Hatch End station, about 0.6 miles north of the centre. Nearby you will also find Heath Robinson Museum (0.8 miles south-west) and Hilfield Castle (4 miles north-east). The countryside around Hatch End includes Harrow Weald Common and Northala Fields.
Commercial sealant contractors across HA5: the area picture
In HA5, much commercial sealant work follows refits in shops, offices and hotels in places such as Ruislip, Hatch End and Ruislip Manor. Where the joint is on show, a colour that suits the finish is part of the job.
We work across Greater London and the South East counties, so jobs in HA5 are planned with access, loading and parking in mind.
Hatch End: Offices and shops close to stations such as Hatch End station (to the north of Hatch End) tend to be busy all day, so sealant work is planned around opening hours. With Hatch End inside the ULEZ and kerb space scarce, we sort access and loading before the first day on site.
Leave it or put it right?
On many buildings the mastic was done by whichever trade was on site. A specialist applicator takes care of product choice, joint depth and preparation, and they’re where most failures begin. You notice the difference years later, not on the day.
Comparing quotes
- Is the sealant right for the movement and the substrate?
- How joint depth will be controlled
- What level of public liability insurance do they hold?
- Do they follow the manufacturer’s priming guidance?
When something else is needed
Our job is the joint, not everything around it. On its own, sealant can’t deal with:
- Suspect materials that need testing and specialist removal
- Water from a services leak rather than a joint
- Structural cracks or movement the joints weren’t designed for
Building owners, agents and FMs in HA5
We take on planned maintenance as well as one-off repairs: resealing failed joints building by building, on a schedule that suits your budget. Sites in HA5 can sit alongside others in a wider programme across Greater London.
Main contractors use us as their sealant subcontractor. Programme, specification and site rules come first, and our applicators hold CSCS cards.
Signs you need commercial sealant contractors
The wrong sealant in the wrong place is a common cause of early failure. Decorators’ caulk on a joint that moves, acetoxy silicone on stone or metal, or a stiff sealant on a facade will all fail early. BS 6213 gives guidance on choosing construction sealants.
Most enquiries start with something like this:
- Frame sealant that has cracked, shrunk or pulled away
- Water staining near frames, panels or ceilings
- Black mould through washroom sealant that won’t clean off
- Greasy, split joints in a kitchen or tea point
General trades versus a specialist
For most general trades, sealant is a sideline. A specialist prepares properly, controls joint depth and picks a product with the right movement class, which is what makes a joint last.
Some joints are best left to specialists: 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.
Common questions from HA5 clients
When can the area be used after sealing?
The product and site conditions decide that. Some products skin over quickly but need longer to cure fully, so we’ll confirm the curing time on the day.
Is your work guaranteed?
Our workmanship on each job is backed by a 12-month guarantee. We are fully insured for public liability as well.
Do you cover HA5?
Yes. We cover HA5 and the rest of Greater London, within our coverage of Greater London, South East England and Scotland. To discuss a job, call the office on 01277 525 020 or email a schedule or drawings.
Can weather delay the job?
Outside, yes. The joint has to be dry and within the product’s temperature range, so damp, frosty or very cold days can stop external work. Internal work is rarely affected.
How long does a job like this take?
It depends on the scope, but the work usually takes as long as the agreed scope needs, from a single visit to a programme spread over several weeks. For bigger or phased jobs, we’ll set out a timescale with the quote.
Do your applicators hold CSCS cards?
Yes. Should the site need card details in advance, let us know and we’ll send them with the quote.
How do you choose the sealant?
A specification, where there is one, decides it. If there isn’t one, it comes down to the joint: how much it moves, what it bonds to and whether it’s wet, trafficked or fire-rated.