Hertfordshire · England
Commercial sealant contractors in AL5
Commercial sealant, construction mastic and joint sealing across AL5, covering Harpenden, Batford and Kinsbourne Green, with a fixed quote before we start.
Need sealant work in AL5?
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Places in AL5
What we do in AL5
- Expansion and movement joint sealing
- Facade and window perimeter sealing
- Mastic sealing for building owners and managing agents
- Industrial and floor joint sealing
- Commercial sealant contractors
- Construction and new-build mastic
- Fire-rated sealing and fire stopping
- Coloured and colour-matched sealant
- Commercial washroom and wet-area sealing
- All services
Let us know the job and your postcode and we’ll come back with a price: phone 01277 525 020 or email drawings and photos.
Districts next door
Elsewhere in Hertfordshire
Every town in Hertfordshire
All areas
Commercial sealant contractors in AL5: how it works
Most of the buildings we seal stay open while we are there. Tell us your site hours and access windows and we’ll plan around them. That applies whether the building is an office, a shop, a hotel, a college or a care home. The enquiries we see most involve smeared sealant across finishes from a rushed job and wall and floor joints that have lost their seal, on kitchen worktops and splashbacks, window and door perimeters and external facade joints.
A typical day starts with protection: tape along each joint edge and covers over finishes, stock and equipment close by. The work itself usually takes part of a day on a small job and longer where several buildings or phases are involved, and our waste is bagged and taken away as we go.
- First, details reach us through the quote form or a site visit.
- The cause is diagnosed and the scope priced as a fixed quote.
- Work is phased around your occupiers where areas need to stay in use.
- Every failed bead is removed rather than covered.
- A suitable product for each joint goes in at the right depth and is tooled.
- A final walk-round, then the 12-month guarantee applies.
What you will pay
We don’t publish prices, because the scope varies so much from one building to the next. Call for a quote and we’ll price your job on its own details.
Why choose Mastic Doctor
- Colours chosen to suit frames, cladding or finishes where possible
- A fixed quote before work starts
- 12-month guarantee on workmanship
- Colours confirmed for the specified product
Get a fixed quote
Quotes are fixed against the scope you send, so the cost is agreed before work starts. To ask for one, give us a call on 01277 525 020 or email drawings and photos.
Around Harpenden
In Harpenden, that means premises near St Nicholas Church, Lydekker Park and Sir John Lawes School and the streets around them. Also close by are Harpenden Academy (under half a mile west) and The Junction pub (less than half a mile south-west). Harpenden has its own railway station: Harpenden station. Other landmarks nearby include Harpenden Museum (less than half a mile south-west) and Luton Castle (5 miles north-west). For a walk, there’s Wheathampstead Local Nature Reserve and Verulamium Lake.
Shops, offices and hotels in AL5
Across AL5, from Harpenden, Batford and Kinsbourne Green to the smaller places between, commercial buildings run from high-street shops and offices to hotels, schools and business parks. We cover the whole area, so occupiers with several sites can use one contractor and one point of contact.
The South East has large numbers of business parks and industrial estates, especially around the motorway corridors, and we cover AL5 along with the rest of the region.
Harpenden: Shops and cafés around stations like Harpenden station, under half a mile south-west of Harpenden, trade from early, so work is timed around them. Sites a few miles apart, such as Southdown Industrial Estate and Thrales End Farm & Business Centre, can share one programme and one point of contact.
Work for main contractors and building owners
FMs need a contractor who is easy to get on site. Let us know the documents you need (RAMS, insurance certificate, CSCS details) and we will confirm them with the quote.
Main contractors use us as their sealant subcontractor. Programme, specification and site rules come first, and our applicators hold CSCS cards.
How the job changes by surface
Window and door perimeters
Inside, cracked sealant around frames and window boards is common. The product depends on whether the joint will be painted, in a shade that suits the frame.
Fire-rated seals where specified
Fire-rated sealant is only one type of fire-stopping product. Other products, such as collars, wraps and batts, are specified for different services.
What we’re called out for in AL5
Washrooms and kitchens wear sealant out in their own way. Damp, harsh cleaning products and poor ventilation let mould take hold inside the bead, and once established it rarely cleans out. Replacement with a sanitary anti-mould silicone is the lasting answer.
Clients usually get in touch after noticing one or more of the following:
- Layers of sealant, all of them failing
- Smeared sealant across finishes from a rushed job
- External beads that have gone brittle and cracked
- Greasy, split joints in a kitchen or tea point
Keeping the joints sound
After handover, these steps help:
- Don’t let cleaning or traffic back on before the cure time is up
- Look at the sealant around anything that has been moved or replaced
- Make sure ventilation in wet areas is switched on and working
- On pre-2000 buildings, share the asbestos information before work starts
Keep an eye out for other trades after we’ve gone. Shop refits, new services and replaced fittings often break the seal around them. Where work has disturbed a joint, just call the office on 01277 525 020 or send details through our quote form for a quote.
Each spell of wet weather pushes more water through an open joint. It can run into cavities, insulation and internal finishes long before anyone sees a stain. Resealing early keeps the problem in the sealant and out of the building.
How the quote is worked out
We price every job individually. The main factors are:
- Specialist products, such as fire-rated or hygienic sealants
- The total length or number of joints
- How accessible the joints are
- Site requirements such as inductions and permits
Small jobs and large programmes are priced from the same things: scope, access, product and programme. Call for a quote, and you will have a fixed figure to work with.
Before you send an enquiry
There’s no need for a formal survey. A few details are enough to get going:
- Specification clauses that apply
- Access details, including height
- What the building is and how it’s used
- Drawings or a marked-up plan, if available
Need a figure for a tender or a budget? Send the scope and any drawings, and we will return a fixed quote you can plan around. If you have questions first, ring 01277 525 020 or use the quote form.
Questions about AL5
Do your applicators hold CSCS cards?
Yes. If you need card details for site access, let us know and we’ll send them with the quote.
Do you work to architects’ specifications?
Yes. Include it with the drawings when you ask for a quote, and the quote will be based on it, flagging anything that needs clarifying.
Do you work directly for building managers?
Yes. Use our quote form to send the site details, or phone or email us, and tell us what site paperwork you need.
Can you supply RAMS and insurance details?
The paperwork is agreed with the quote: most clients ask for RAMS, our insurance certificate and CSCS details. Every applicator holds a CSCS card.
Can weather delay the job?
For external joints, yes. The joint has to be dry and within the product’s temperature range, so frost, rain or cold mornings can delay outside work. Inside work is seldom held up.
Can you handle sealant work across several sites?
Yes. We regularly take on multi-site work and planned maintenance programmes, quoted per building or as a package.
How do you keep disruption to occupiers down?
It’s mostly about sequence: we agree access windows, phase the work and keep enough facilities open. Tell us what has to stay open and we will plan the job around it.