Hertfordshire · England

Fire-rated sealant in Aston, Hertfordshire

Intumescent and fire-rated sealant around gaps, frames and service penetrations for Aston, backed by a 12-month guarantee. Ask us for a quote.

  • Gaps left after a refit or conversion
  • Door frames with gaps between frame and wall
  • Standard silicone or caulk in a fire-stopping gap

Fire rated sealant for Aston homes and businesses

About our fire rated sealant in Aston

Later work by other trades often breaks through fire stopping, especially in flats, HMOs, offices and schools. One new cable or pipe can leave a gap that nobody goes back to seal. We seal them with a product tested for that kind of gap. We’re often asked to deal with open joints along the top of partitions and new service routes left unsealed after building work, across pipe & cable gaps, flats & HMOs and linear gaps.

Somewhere as small as Aston, commercial jobs tend to be pubs, holiday lets, farm buildings or halls rather than offices. They all have washrooms, kitchens and service openings that need the right sealant.

We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we’ll sort it.

The Mr Mastic team in navy uniforms in front of three Mr Mastic vans
Location
Aston (SG2)
Wider area
Hertfordshire
Guarantee
A year, on every job
Price
A clear quote up front
Call
0345 464 0079
Page updated
26 October 2026

Looking after it afterwards

Once the sealant has cured, a few habits help it last:

  • Take pictures of fire stopping before ceilings or boxing go back
  • Tell trades working in the building that fire seals must be put back
  • Allow for resealing whenever new services are run
  • Report cracked or damaged seals as soon as you notice them

File the record of locations and products with your fire safety paperwork. It saves time at the next inspection or assessment.

Small gaps around services are simple to deal with while there are only a few. Leave them and each new job adds another hole and the list grows.

The process

You don’t need to clear the whole room or building before we come, only the area right around the joints. Everything nearby is protected, and the work takes a few hours for a handful of gaps, and longer for a whole building in most cases. In a small place like Aston, access is generally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.

  1. We plan the order of work and access, floor by floor or flat by flat.
  2. We take out any damaged or unsuitable sealant.
  3. Gaps are cleaned of dust and loose material.
  4. We apply and tool the sealant to the product’s tested detail.
  5. Locations and products are written up and any gaps unsuitable for sealant are flagged.

Getting ready for the visit

  • Tell us if parking is tricky
  • Tell us about any previous sealing or DIY attempts
  • Tell us about any water getting in

How to get a quote

We don’t publish a price list, as no two jobs are quite the same. Instead, we send you a clear quote for your job. To arrange one, phone 0345 464 0079 or send us an email.

Get a price

Read more

Why deal with it now?

An unsealed gap lets smoke and fire get round a wall that was built to hold them back. A proper seal lets the wall do its job again, and the sealing itself is often a contained piece of work. In a small place like Aston, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.

The cost reflects the work involved, not guesswork. That’s why we ask about the job first and agree the price before starting.

Why us?

  • Full insurance on every job
  • Quality sealants from Arbo and Everbuild
  • More than 20 years in sealant work
  • Sanitary silicone with an anti-fungal additive in wet areas

Read our cost guide or our reviews.

Landlords, agents and businesses in Aston

Whether it’s one flat or a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.

Housing providers, facilities teams and property managers book us too. We can quote a run of properties together, and we are fully insured.

What affects the quote in Aston

Every job gets its own quote. These are the things that affect it:

  • Access and height
  • How much old sealant there is and how hard it is to remove
  • Mould in or behind the old joints
  • The size of the job

The cost depends on the amount of work, how hard the old material is to remove and access to the work. We give a clear quote before we start.

Helping us quote

To help us quote quickly, let us know:

  • Where the property is
  • Roughly how big the job is
  • How we’d reach the joints
  • The problem you’ve noticed

For a quote, call 0345 464 0079 or email us and tell us where the job is and what the problem looks like. You’ll have a clear quote before any work starts.

Common problems we fix in Aston

Gaps also open up as buildings move: cracked or debonded sealant leaves an open route through the wall. Damage from cleaning, knocks and maintenance adds to it.

Most people get in touch after spotting something like this:

  • Unsealed gaps where pipes and cables go through a wall
  • Sealant items on a fire risk assessment action list
  • Door frames with gaps between frame and wall
  • Gaps left after a refit or conversion

If you let a flat or house near Knebworth station, new cables or pipes through a fire-resisting wall leave a gap that needs the right sealant.

Before you book anyone

  • Whether VAT is included
  • What insurance they hold
  • Which sealant they’ll use, and why
  • Whether you can choose the colour

Our hiring checklist

Fire rated sealant around Aston

Workplaces and the common parts of blocks of flats in England need a fire risk assessment under the Regulatory Reform (Fire Safety) Order 2005, and gaps around services are often picked up there. We apply fire-rated sealant to the assessor’s or designer’s specification and the product’s tested details. Stevenage, which Aston is part of, is one of England’s post-war new towns. Stevenage was planned with its own industrial and business areas, so workplaces sit close to the homes. Each has washrooms, kitchens and fire-rated joints to keep in order.

Schools such as Aston St Mary's Church of England Aided Primary School are buildings too, and fire-stopping around service openings should be restored whenever new services go in. Community buildings like Parish Church of St Mary the Virgin are part of the picture too: gaps around pipes and cables are worth checking after any building work there.

Aston is about 2 miles south-east of Stevenage, in Hertfordshire. Our applicators cover fire rated sealant for homeowners, landlords and businesses in Aston and the surrounding area. Aston is one of 381 places in Hertfordshire where we work for fire rated sealant. London is on our list too, about 27 miles from Aston.

Postcode districts we cover here for fire rated sealant: SG2. We cover properties on Penn Close, Benington Road and Brook Field and the roads around them. Close by, we work in Bragbury End (1 mile south), Shephall (1 mile west), Hook's Cross (1 mile south), Benington (2 miles east) and Knebworth (2 miles south-west). We also work in nearby towns such as St Albans (12 miles south-west), Bishop's Stortford (13 miles east), Welwyn Garden City (7 miles south), Harpenden (10 miles south-west), Hitchin (7 miles north-west) and Hoddesdon (11 miles south-east).

What’s near Aston

Typical jobs here are in homes near The Heathcote School, Rose And Crown Public House and Barnwell School, among other places. Aston’s nearest station is Knebworth station, about 2.2 miles south-west. Well-known places in the area include Benington Castle (1.5 miles east) and Stevenage Museum (2.3 miles north-west). For a walk, there’s Ridlins Mire.

Map of Aston © OpenStreetMap contributors

Can I do it myself?

The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.

The biggest DIY mistake is sealing over old sealant. New silicone will not bond to old, so it peels away and traps moisture behind it. Everything old must be removed first.

FAQs for Aston

Do you cover Aston for fire rated sealant?

Yes, Aston is within the area we cover. We work across London and the South East. Just ring 0345 464 0079 or email us with a few details of the job, and we will give you a clear price.

Can you help a landlord with a rental near Knebworth station?

Yes, we work for landlords and letting agents. Just phone 0345 464 0079 or send us an email and tell us about the property, and we will give you a clear quote.

How long does the job take?

It depends on the size of the job, but most jobs take a few hours for a handful of gaps, and longer for a whole building. We’ll give you a better idea when we quote.

Do I have to be there?

That depends on where the joints are. For work indoors, someone needs to let us in, while outside work can sometimes be arranged differently.

What’s the difference between intumescent and fire-rated sealant?

An intumescent sealant expands when it gets hot. Intumescent sealants are one kind of fire-rated sealant; which product suits depends on the gap, the substrate and the service.

Will it make a mess?

Tidy work is part of the job. We protect what’s around the joints.

Will the old sealant be removed?

Yes. We cut out all the old sealant and clean the joint before resealing.

Can you tell me which gaps need fire stopping?

No. Your fire risk assessor, designer or building control decides that. We apply fire-rated sealant to the requirements they set.

20+ yearsMastic and sealant specialists
ARBOMaster approvedApproved applicator for Arbo sealants
Fully insuredDomestic, commercial and hotels
One-year guaranteeOn every job