Hertfordshire · England
Commercial sealant contractors in SG2
We cover every part of the SG2 postcode district, which takes in Chells, Shephall and Walkern. Failed sealant is always cut out completely, with a 12-month guarantee.
Sealant work in SG2
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Places in SG2
- Chells
- Shephall
- Walkern
- Bragbury End
- Aston
- Benington
- Aston End
- Burn's Green
- Stevenage
- St Nicholas
- Pin Green
- Bedwell
Services in SG2
- Commercial washroom and wet-area sealing
- Coloured and colour-matched sealant
- Mastic sealing for building owners and managing agents
- Construction and new-build mastic
- Fire-rated sealing and fire stopping
- Expansion and movement joint sealing
- Facade and window perimeter sealing
- Commercial sealant contractors
- Industrial and floor joint sealing
- See all services
Tell us what needs doing and your postcode and we’ll come back with a price: call 01277 525 020 or send photos by email.
Nearby postcode districts
Across Hertfordshire
All places in Hertfordshire
All areas
Our commercial sealant contractors service in SG2
Some sealants used before 2000 can contain asbestos, so older stock needs a check first. We ask to see the asbestos register or survey before old sealant is disturbed, because the duty to manage asbestos sits with the dutyholder. If a material is suspected, work stops until it’s tested (removing asbestos-containing materials isn’t something we do). We work on window and door perimeters, external facade joints and washrooms and tea points, and the failures we are asked to look at most are hardened, chalky sealant on south-facing or exposed elevations and frame sealant that has cracked, shrunk or pulled away.
We bring the products specified for the job, along with primers and backing rod. Joint faces are cleaned back to sound, dry surfaces, the manufacturer’s primer is applied where it’s called for, and the sealant is tooled off neatly.
- Site photographs, drawings or a visit tell us what’s there and how it has failed.
- A fixed quote follows, with removal and preparation included.
- We agree the order of work, access windows and site hours with you.
- The failed sealant comes out and the faces are prepared, with primer where required.
- 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.
Pricing in SG2
Whether it’s a single area or a whole estate, the same things set the price: what’s in scope, how we reach it, what’s specified and when it needs doing. Call for a quote, and you will have a fixed figure to work with.
Why choose Mastic Doctor
- 12 months’ guarantee on every job
- Failed material removed, not covered up
- CHAS accredited contractor
- Public liability insurance in place
Ask for a quote
Send details, get a quote, we seal, guaranteed: that’s how every job runs. To take the first step, ring 01277 525 020 or send details through our quote form.
Around Chells
Around Chells, our work takes us to commercial buildings near St Hugh & St John, The Nobel School and Lodge Farm Primary School and the streets around them. The nearest railway station is Stevenage station, roughly 1.8 miles south-west. A little further out are Lister Hospital (2.1 miles north-west) and Benington Castle (2.4 miles south-east). The countryside around Chells includes Pryor's Wood.
Where commercial joints are in SG2
From Stevenage, Chells and Shephall outwards, SG2 has a broad spread of commercial premises: shops, offices, hotels, restaurants and units. Because we cover all of it, multi-site occupiers can bring every building under one quote, with colours matched site to site where the brand needs it.
London and the South East are among the drier parts of the UK, though outside work in SG2 still waits for dry faces, and cold mornings bring frost and condensation on steel and glass.
Chells: If you have premises on more than one site, say at Monkswood Retail Park and Oaklands Retail Park, one contractor and one quote can cover both. Offices and shops close to stations such as Stevenage station (1.8 miles south-west of Chells) tend to be busy all day, so sealant work is planned around opening hours.
Cost factors for sealant joints
What shapes the price:
- Site requirements such as inductions and permits
- Removal of failed or old sealant
- The size and state of each joint
- Quantities, in metres or numbers
There’s no price list, 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.
Before you send an enquiry
However big the job, these details speed things up:
- Clear photographs of the problem areas
- The type of building and who uses it
- When you need the work done
- How the joints are reached, and at what height
Need a figure for a tender or a budget? We will quote against your scope and drawings that you can work with. For a chat about it beforehand, speak to us on 01277 525 020 or send details through our quote form.
What happens if it’s left?
A cheaper quote sometimes means the old bead stays in. New sealant laid on old silicone has nothing to bond to, so it peels. Every quote we give includes full removal and preparation, because that’s what makes the new bead last.
What your quote should include
- Their public liability cover
- The named product and why it was chosen
- What the guarantee covers, and for how long
- Are they CHAS accredited or on Constructionline?
Common problems we fix in SG2
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.
Common reasons buildings call us in:
- Frame sealant that has cracked, shrunk or pulled away
- Sanitary sealant that has gone black and patchy
- External beads that have gone brittle and cracked
- Movement joints packed with grit and debris
How the job changes by surface
Movement joints in walls and floors
Floor joints that take trolleys or forklifts need a tougher filler or sealant. We’ll recommend the right filler or sealant for the traffic and movement, and tell you if the edges need repairing first.
Washrooms and toilets
Washroom joints take water, cleaning chemicals and constant use. We cut out mouldy or split beads and reseal in anti-mould sanitary silicone, phasing the rooms so not every toilet is closed at once.
When something else is needed
A few problems need another trade or a different fix, and we point that out rather than sealing over them:
- Misted, cracked or failed glazing units (a glazier’s job)
- Walls or slabs moving more than any sealant can take
- Roof leaks that only look like a joint problem
FAQs: SG2
Do you check for asbestos before removing sealant?
On older buildings, our first request is the asbestos survey. The duty to manage asbestos sits with the dutyholder, and we don’t remove asbestos-containing materials.
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.
When can the area be used after sealing?
We will confirm how long the chosen product needs to cure, and flag anything to keep off until it has cured.
How do you choose the sealant?
If the job is specified, we follow the specification. Otherwise, we recommend a product to suit the joint’s movement, the substrate and the conditions, following the manufacturer’s guidance.
How many days will you need on site?
The duration is planned around your programme and the access we are given. We will give you an estimate of time on site when we quote.
Can areas stay open during the work?
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.
Do you cover SG2?
Yes. We take on work across SG2.