Hitchin commercial sealant contractors
Commercial sealant contractors for Hitchin, from a contractor working since 2005. Fully insured and CHAS accredited.
- Leaks that seem to come through a sealant line
- Wall and floor joints that have lost their seal
- Mouldy silicone around WCs, urinals and vanity tops
Commercial sealant contractors for businesses in Hitchin
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
When to call us in Hitchin
A good share of the joints we inspect were topped up instead of being renewed. Fresh sealant won’t stick to the old bead underneath, so the top layer lifts, holds water and hides what’s going on. By the time it shows, there can be two or three layers to cut out.
Look out for the following:
- Untidy joints in a reception, shop floor or lobby
- Sanitary sealant that has gone black and patchy
- Movement joints packed with grit and debris
- Gaps behind commercial kitchen worktops and sinks
Offices and shops close to stations such as Hitchin station, under half a mile north-east of Hitchin, tend to be busy all day, so sealant work is planned around opening hours.
Comparing quotes
- Which product they’ll use, and why it suits the joint
- How joint depth will be controlled
- Who will actually carry out the work
- How they’ll work around occupants
Commercial sealant contractors in Hitchin
Most commercial buildings carry hundreds of metres of sealant that nobody thinks about until it fails, and on a working site that normally surfaces as a leak, a stain or a complaint from occupiers. Mastic Doctor works as a commercial sealant contractor for facilities managers, managing agents and main contractors looking after property in Hitchin. Our job is to diagnose the failure, remove the old bead and seal again using a product chosen for the movement and exposure. We work on floor and threshold joints, window and door perimeters and washrooms and tea points, and the usual reasons a site gets in touch are expansion joints with the sealant torn out and shrunken sealant along kitchen worktops and splashbacks. One point of contact handles commercial sealant work in Hitchin from the first photos to the final walk-round, for single jobs and planned programmes alike.
A lot of what we do in Hitchin is replacing sealant that has done its years: split, chalky or peeling, with leaks or mould starting behind it.
In towns of Hitchin’s size, shops and offices often occupy older buildings with later extensions and new shopfronts. Joints where brick or render meets a newer frame or panel move differently, so the sealant has to suit both sides.
We sign every job off with a 12-month guarantee. It’s a plain promise: if the work we did fails within twelve months, we return to fix it.
- Place
- Hitchin (SG4, SG5)
- Wider area
- Hertfordshire
- Cover
- 12 months on every job
- Quotes
- Fixed quote, scope in writing
- Call
- 01277 525 020
- Page updated
- 3 November 2026
Leave it or put it right?
It can be tempting to hold sealant work back until the next refurbishment. For internal joints that are only cosmetic, that can make sense, but external and wet-area joints that already leak shouldn’t wait. Splitting the scope into now and later is often the sensible compromise. Many buildings in towns like Hitchin have been extended or altered, so joints between old and new are often the first to go. Renewing them before water gets in protects the fabric.
The work involved drives the cost: stripping out, preparation, sealing, access and phasing. Call for a fixed quote.
Why choose Mastic Doctor in Hitchin
- Joints cleaned back to sound surfaces
- A Constructionline member, so easy to vet
- Products installed to the manufacturer’s instructions
- One contact handling all your sites
See how commercial sealant jobs are priced or how we’re accredited.
How the quote is worked out
Your fixed quote is built from the real scope. It takes account of:
- The site’s rules and procedures
- Any access equipment needed
- How much existing material needs removing
- Travel to remote or island sites
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’ll price your job on its own details.
What we need to price the job
It doesn’t need to be a full survey. A few details are enough to get going:
- Asbestos survey details if the building is older
- Any specification or named product
- Anything awkward about access or site hours
- Rough lengths or quantities, or drawings if you have them
Need a figure for a tender or a budget? Send the scope and any drawings, and we’ll return a fixed quote you can plan around. For a chat about it beforehand, give us a call on 01277 525 020 or email the details over.
Questions about Hitchin
Can you take on a job in Hitchin?
Yes, Hitchin is within the area we cover. London and every South East county are within our area. To get started, just ring 01277 525 020 or email drawings and photos with the address and what needs doing.
Can the sealant on our Hitchin premises match the finishes?
Yes, sealants come in a wide range of standard colours, and matching to RAL references, cladding, stone or frames is a common request. Available colours for the product are confirmed with the quote.
What guarantee do you give on resealing?
Our workmanship on each job is backed by a 12-month guarantee. We’re fully insured for public liability as well.
Is it fine to apply new sealant on top of old?
No. Failed sealant is removed and the faces cleaned back to sound, dry material first, because fresh silicone will not bond with aged silicone.
How long does a typical visit take?
We plan the time on site around your programme and access. We will give you an estimate of time on site when we quote.
Who decides which product is used?
The specification comes first, if there is one. Without one, the joint decides: its movement, its surfaces and what it has to cope with.
Can you supply RAMS and insurance details?
Send your site requirements with the enquiry, and the paperwork is confirmed with the quote. From you, we’ll need the asbestos information for older buildings and any site rules.
Working on commercial sites near Hitchin
A number of hotels sit less than 2 miles from Hitchin. In hotels, sealant shows everywhere, from bathroom joints to reception counters, so colour and a clean finish matter, with rooms done in turn while the rest stay let. There are two care or nursing homes within about 2 miles of Hitchin. In care settings, a neat joint at a kitchen worktop or a lounge window is part of keeping the place easy to clean; colours can be chosen to suit the interior.
A hotel such as The Sun Hotel, under half a mile to the south-west of Hitchin, shows how much sealant a hospitality building has on show, from bathroom joints to the bar.
Hitchin is about 5 miles north-west of Stevenage, in Hertfordshire. Anywhere in SG4, it works the same way: details in, fixed quote out, then sealing and a 12-month guarantee. Our Hertfordshire coverage takes in 371 places. London is covered too, some 32 miles away.
We take on sealant joints across the SG4 and SG5 postcode area. Among the streets we cover are Market Place, London Road and Harrison Close, and sites on any of them can send details for a fixed quote. Access to Hitchin is via the A505 and A600 among other routes, so getting applicators and materials to site is simple. Close to Hitchin, our area also takes in Benslow (1 mile east), Poets Estate (1 mile east), Bearton (1 mile north-west), Walsworth (1 mile north-east) and Westmill (1 mile north-west). Bigger towns within reach include Stevenage (5 miles south-east), St Albans (14 miles south), Welwyn Garden City (11 miles south), Harpenden (10 miles south), Hatfield (13 miles south) and Hertford (13 miles south-east). Hitchin ranks among the main centres of Hertfordshire, with offices, shops, schools and other public and commercial buildings, and we cover them all.
Around Hitchin
Recent enquiries here include premises near Highbury Infant School and Nursery, Butts Close and Kingshott School, among other places. Nearby too are Radcliffe Arms (less than half a mile north-east) and St Mary's Church (less than half a mile south-west). There’s a railway station in Hitchin itself: Hitchin station. Nearby you’ll also find Wymondley Castle (1.7 miles east) and Lister Hospital (3.1 miles south-east). Not far away are Purwell Ninesprings and Markham's Hill.
When something else is needed
Being straight saves everyone time. Fresh joints won’t solve:
- Misted, cracked or failed glazing units (a glazier’s job)
- Structural cracks or movement the joints weren’t designed for
- A failed roof covering or waterproofing membrane
If in doubt, speak to us on 01277 525 020 or send details through our quote form and we will say what we think.
Joints and surfaces we work on
- Washrooms and tea points
- External facade joints
- Window and door perimeters
- Floor and threshold joints
- Movement joints in walls and floors
- Kitchen worktops and splashbacks
Doing it in-house
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.
A short, simple internal joint is often within reach of a maintenance team. Where it goes wrong is preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.
Diagnose, treat, sign off
Site rules come first: sign-in, induction and whatever permit system the building uses. With the paperwork done, we take the joints in the sequence agreed with you. In a town such as Hitchin, most jobs are single buildings. We start with your photos, drawings or a site visit, then send a fixed quote.
- We start with the evidence: photos, drawings or a look on site.
- A fixed quote follows, with removal and preparation included.
- We agree the order of work, access windows and site hours with you.
- Each joint is stripped, cleaned back to sound faces and primed where the maker specifies.
- Backing goes in, the new sealant is laid and tooled, and the area is left neat.
- Completed areas are signed off with you under our 12-month guarantee.
Before we start on site
- Send asbestos survey details if the building is pre-2000
- Have the specification and drawings to hand
- Explain the parking and delivery arrangements
Quotes
If there’s a specification, drawings or a tender package, send it with your enquiry, and we’ll price against exactly what is specified. For smaller jobs, photos and a description will do.