How long does asbestos removal take?

Licensed asbestos removal cannot legally begin until 14 days after the enforcing authority has been notified, and that applies to every licensed job regardless of size. After that, a contained removal in a single area is a matter of days, while a licensed programme across a large or complex building runs for weeks or months. Duration is driven by the material type and the access rather than the value or size of the contract.

Why is there a 14-day wait before asbestos removal can start?

For licensed asbestos work, the contractor must notify the relevant enforcing authority, usually the HSE, at least 14 days before work begins. This is required under the Control of Asbestos Regulations 2012 and is a condition of the contractor's licence. The 14 days only starts once the authority has received a complete notification, including the ASB5 form, a site-specific plan of work, and a copy of the licence.

Can the 14-day asbestos notification period be waived?

Only in genuine emergencies. The HSE has stated waivers are unlikely to be granted to accommodate a lack of planning by a client or contractor. For any planned refurbishment, demolition, or maintenance programme, the 14-day period should be treated as fixed.

Why do larger asbestos removal projects sometimes take less time?

Because duration is driven by material type and access rather than volume. Bonded material across open, accessible areas allows a large team to work multiple faces at once and compress the programme. Friable material in confined spaces such as basement ducts or ceiling voids requires full enclosure and a small team working under controlled conditions, which cannot be sped up by adding operatives.

How long does commercial asbestos removal take?

A contained removal in a single defined area is typically a matter of days. Licensed removal across multiple areas or floors runs for several weeks. Phased programmes across large commercial sites or multi-building estates run for months. The 14-day notification period applies to every licensed element regardless of scale.

What is the asbestos removal process?

Survey and scoping, plan of work and method statement, notification to the enforcing authority, site setup with enclosures and decontamination facilities, controlled removal under continuous air monitoring, cleaning and visual inspection, four-stage clearance by an independent UKAS-accredited analyst, waste consignment and disposal at a licensed facility, and handover documentation. Only one of those stages is the removal itself.

Does a building have to be empty during asbestos removal?

No. Removal in occupied commercial buildings, hospitals, and housing stock is routine, using phased work areas, out-of-hours access, or decanting a defined area. Each approach extends the programme. The right approach depends on where the material sits, how people move through the building, and whether an enclosure can be established without cutting across occupied space or live services.

How quickly can asbestos removal start in an emergency?

Non-licensed work can start quickly, sometimes within 24 to 48 hours where a framework and team are already in place. Licensed work is different: the 14-day notification period applies, and waivers are granted only in genuine emergencies, not for scheduling pressure.

How long does asbestos clearance take after removal?

Four-stage clearance is carried out by an independent UKAS-accredited analyst after licensed removal, typically within a day or two of the works finishing. On phased projects each phase requires its own clearance before that area is handed back. An area cannot be reoccupied until a clearance certificate has been issued.

Asbestos Encapsulation vs Removal: Which Is Right for Your Building?

Oct 27

6 min read

Asbestos encapsulation seals asbestos-containing material in place with a specialist coating, and suits material in good condition that will not be disturbed. Removal is the right choice where material is damaged, friable, or in the way of planned works. Encapsulated asbestos stays on the asbestos register and must be re-inspected.

a fence with danger asbestos warning sign on

What Is Asbestos Encapsulation?

Asbestos encapsulation is the process of applying a protective coating or covering to an asbestos-containing material (ACM) so that its fibres are bound together and the surface is protected from damage. The asbestos is not removed. It stays where it is, sealed, and is managed as part of the building’s asbestos management plan.

Encapsulation is one of two ways of dealing with asbestos that has been identified in a building. The other is removal. Which one is appropriate depends on the type of material, its condition, where it is, and what is planned for the building over the coming years.

What Is Asbestos Encapsulation Paint?

Asbestos encapsulation paint is a specialist coating designed to seal the surface of an asbestos-containing material and stop fibres being released. These products are often described as asbestos sealants, sealers or encapsulants. They are formulated and tested for use on asbestos, unlike standard paints. On a commercial site, the encapsulant is specified as part of a plan of work, and the job is carried out as work with asbestos under the Control of Asbestos Regulations 2012, not as decorating.

What Types of Asbestos Encapsulant Are There?

There are three main approaches:

Penetrating encapsulants soak into the material and bind the fibres from within. They are mainly used on more porous materials.
Surface or bridging coatings, including high-build elastomeric coatings, form a tough skin over the material. They are often applied in several layers and sometimes reinforced.
Mechanical encapsulation covers the material with boards or sheeting, sometimes alongside a coating, so that it is physically shielded from contact.

The right product depends on the material and its condition. Some elastomeric coatings are quoted as lasting up to 20 years where they are not disturbed.

Can You Encapsulate Asbestos With Paint?

Not with ordinary paint. Standard emulsion or gloss is not designed to bind asbestos fibres. Preparing a surface for decorating, by sanding, scraping or keying it, is exactly the kind of disturbance that releases fibres. Encapsulation uses products made for the purpose, applied by trained operatives under the controls set out in the regulations. Any surface preparation is carried out in a way that avoids disturbing the material.

Is Asbestos Encapsulation Licensed Work?

It depends on the condition of the material. HSE guidance lists encapsulation and sealing of ACMs in good condition as work that can be carried out without a licence. That only applies where exposure is sporadic and low intensity, and fibre levels will stay within the control limit of 0.1 fibres per cubic centimetre of air, averaged over four hours.

Where the material is damaged, or the work would disturb high-risk materials such as sprayed coatings or pipe lagging, the job is likely to fall into licensed work, and must be carried out by an HSE-licensed contractor. Even where a licence is not required, the work still needs a risk assessment, a written plan of work, trained operatives and suitable controls. HSE sets out the conditions in its guidance on non-licensed asbestos work.

When Is Encapsulation the Right Choice?

Encapsulation is generally appropriate when all of the following apply:

The material is in good condition and firmly attached.
It is unlikely to be disturbed by maintenance, impact or building users.
No refurbishment or demolition affecting that area is planned.
Removing it would cause more disruption or risk than leaving it sealed in place.

A common example is asbestos insulating board or asbestos cement in a ceiling void or plant room that sees little traffic, where the material is intact and the building is staying in use for the foreseeable future.

Encapsulation is not suitable for every material. Industry guidance warns against it where the material is poorly adhered or deteriorating, where water could get behind the coating and add weight, or where sprayed coatings on beams and columns may not be stable enough to hold it. Where the original material provides fire protection, any encapsulant used must maintain that fire performance.

When Should Asbestos Be Removed Instead?

Removal is usually the better option when:

The material is damaged, deteriorating or friable.
It sits where it is likely to be knocked, drilled or worked on.
Refurbishment or demolition is planned.

The Control of Asbestos Regulations 2012 require asbestos to be removed before demolition so far as is reasonably practicable. So encapsulating material in a building that is due to come down only postpones the job.

Some materials are almost always better removed. Damaged asbestos pipe lagging, for example, is among the most hazardous materials found in commercial buildings, and disturbing it is licensed work. Where the material is licensable, licensed asbestos removal is carried out inside controlled enclosures, with air monitoring, decontamination and clearance testing by an independent analyst. The HSE must be notified at least 14 days before the works start.

How Do Encapsulation and Removal Compare?

	Encapsulation	Removal
Suitable for	Material in good condition, unlikely to be disturbed	Damaged, friable or at-risk material, and any area facing refurbishment or demolition
What happens to the asbestos	Stays in place, sealed	Taken out and disposed of at a licensed facility
Licensing	Can be non-licensed if material is in good condition and exposure stays low	Licensed for high-risk materials, with 14 days’ notice to the HSE
Disruption	Usually shorter, often possible with the building in use	Enclosures and longer programmes, sometimes phased in occupied buildings
Upfront cost	Lower	Higher
Ongoing obligations	Stays on the asbestos register, labelled and re-inspected	None once clearance is certified
Before future works	Must be dealt with, usually by removal	Already resolved

How Much Does Asbestos Encapsulation Cost?

There is no standard price for asbestos encapsulation. The cost depends on:

The type and area of material
Its condition and how much preparation it needs
Access, including whether scaffolding or working at height is involved
The encapsulant specified
Whether the work falls into licensed or non-licensed categories

Encapsulation is almost always cheaper upfront than removal, but the fairer comparison is whole-life cost. Encapsulated material has to be re-inspected and kept on the register, may need the coating repaired if it is damaged, and will still need to come out if the area is refurbished or the building is demolished. Where works are planned within a few years, removal is often the more cost-effective decision. We cover what drives the cost of commercial asbestos removal in a separate guide.

What Happens After Asbestos Is Encapsulated?

Encapsulated asbestos is still asbestos, so the duty holder’s responsibilities under the duty to manage continue. The material must stay on the asbestos register with its location, condition and the date it was encapsulated recorded. It should be labelled where appropriate, and it needs to be re-inspected, typically at least once a year or more often where the risk assessment calls for it.

Anyone working in the area needs to know it is there, which is why contractors are given the register before starting work. If the building is later refurbished or demolished, a refurbishment and demolition survey will identify the encapsulated material, and it will usually need to be removed at that point. You can read more about how an asbestos management survey builds the register that this process depends on.

Talk to Us About Asbestos in Your Building

Emchia is an HSE-licensed asbestos removal contractor with over 25 years of industry experience. We deliver projects for clients including the NHS, BAM, Ford, Premier Inn and Boohoo, across the North West, the Midlands and London. Every quote we provide is based on a full survey of the site, so the decision between leaving material in place and removing it is made on what is actually there.

If you have an asbestos register or survey report and need to decide what comes out ahead of planned works, speak to our team about your building.

field with workers checking the land condition, a lot of these sections are cornered off for safety

Frequently Asked Questions

Is Encapsulated Asbestos Safe?

Encapsulated asbestos is considered safe while the coating remains intact and the material is not disturbed, because the fibres are bound and sealed. The risk returns if the coating is damaged or the material is drilled, cut or broken. That is why encapsulated asbestos must stay on the asbestos register, be labelled where appropriate, and be re-inspected regularly.

How Long Does Asbestos Encapsulation Last?

It depends on the product, the material and the conditions. Some high-build elastomeric coatings are quoted as lasting up to 20 years where they are not disturbed. In practice, the encapsulation lasts as long as regular re-inspection shows it is intact. Damage, water ingress or building works can shorten its life considerably.

Does Encapsulated Asbestos Stay on the Asbestos Register?

Yes. Encapsulation does not remove the asbestos, so the material stays on the asbestos register with its location, condition and encapsulation date recorded. The duty holder must continue to manage it under the duty to manage, including periodic re-inspection, and must share the register with anyone carrying out work that could disturb it.

Can Encapsulated Asbestos Be Removed Later?

Yes. Encapsulated asbestos can be removed at a later date, and usually has to be before refurbishment or demolition affecting that area. The coating becomes part of the material being removed, and the work is classified in the same way as any other asbestos removal. If the material is licensable, it must be carried out by an HSE-licensed contractor.