Asbestos and Renovation: OSHA Says Look Again

OSHA’s recent interpretation highlights an often-overlooked issue: completing asbestos abatement doesn’t necessarily mean asbestos considerations are over when reconstruction begins.

General contractors, restoration contractors, insurance professionals, consultants, and asbestos contractors should take note of a recent OSHA interpretation addressing an issue that can create significant confusion in the field:

What happens after the asbestos abatement is complete, but asbestos-containing material remains in the building?

On May 7, 2026, OSHA issued a Letter of Interpretation addressing the replacement of drywall following the removal of water-damaged asbestos-containing materials (ACM). The scenario involved residential restoration work where a licensed asbestos contractor removed or repaired the water-damaged ACM, but other intact asbestos-containing wallboard or joint compound remained.

OSHA’s answer is important:

Completion of the asbestos abatement does not necessarily end the employer’s responsibilities under OSHA’s asbestos standard. What matters is how the reconstruction work will interact with the ACM that remains.

Renovation Work Can Still Be Asbestos Work

OSHA explains that post-abatement renovation activities may fall within the asbestos construction standard, 29 CFR 1926.1101, when employees contact, disturb, or remove remaining ACM.

According to OSHA:

• Work that contacts but does not disturb remaining ACM may constitute Class IV asbestos work.

• Repair or maintenance work that disturbs existing ACM may constitute Class III asbestos work.

• Removal of asbestos-containing materials may constitute Class I or II asbestos work.

That distinction has significant consequences.

The drywall installer, carpenter, restoration technician, or other trade performing the reconstruction may have responsibilities under OSHA’s asbestos standard—even though another contractor already completed the original asbestos abatement scope.

The Key Question: Will the Remaining ACM Be Disturbed?

OSHA’s interpretation does not say that installing new materials adjacent to asbestos-containing material automatically disturbs the asbestos.

Instead, the contractors Competent Person must evaluate how the reconstruction work will interact with the ACM that remains.

OSHA specifically distinguishes between work that contacts but does not disturb remaining ACM and work that actually disturbs it. OSHA states that post-abatement drywall restoration that contacts but does not disturb remaining ACM would be Class IV asbestos work, while work that disturbs the existing ACM would be Class III asbestos work.

This distinction is important because it may be possible to complete reconstruction without disturbing the remaining asbestos.

For example, a contractor may be able to install new drywall adjacent to existing asbestos-containing wallboard without cutting, sanding, drilling, removing, or otherwise disturbing the ACM. The feasibility of doing so depends on the specific construction details and the work necessary to complete the restoration.

The difficulty comes when normal reconstruction activities require workers to alter the existing material. Sanding existing asbestos-containing joint compound, cutting an existing wallboard edge, drilling or fastening through ACM, or removing material to create a suitable transition can change the nature of the work.

In the situation presented to OSHA, the proposed work included aggressive sanding of asbestos-containing joint compound and wallboard. OSHA concluded that the work described was likely Class II or Class III because ACM was likely to be removed and/or disturbed.

Therefore, the important question for the renovation contractor is not simply:

“Does asbestos remain?”

It is:

“What will our reconstruction activities actually do to the asbestos that remains?”

“We don’t intend to disturb it” is not a work plan.

There is an important practical difference between intending not to disturb asbestos and having a reconstruction method that can actually accomplish that.

The work method must realistically allow the ACM to remain intact.

Drywall reconstruction may require fastening, taping, applying joint compound, sanding, trimming, drilling, or creating a smooth transition between new and existing surfaces. The contractors Competent Person needs to consider each of these activities and determine whether it can be performed without disturbing the remaining ACM.

Simply instructing workers to “avoid the asbestos” may not be sufficient if the construction detail requires them to work directly on or through it.

A better approach is to determine before reconstruction:

• Where does the remaining ACM begin and end?

• What activities will be performed immediately adjacent to it?

• Will workers need to cut, drill, sand, scrape, fasten through, or otherwise alter it?

• Can the reconstruction detail be modified to avoid disturbing the ACM?

• If disturbance cannot reasonably be avoided, should additional ACM be removed before reconstruction continues?

This evaluation should occur during planning—not after a worker discovers that the new drywall cannot be finished without cutting or sanding the existing material.

There Are Limits to Class III Disturbance

Contractors should also be careful about assuming that any small disturbance can simply be treated as Class III asbestos work.

OSHA defines Class III asbestos work as repair and maintenance operations where ACM, including thermal system insulation and surfacing ACM or PACM, is likely to be disturbed.

In its interpretation, OSHA also points to the standard’s definition of “disturbance.” OSHA notes that Class III procedures may be followed where the ACM or PACM removed or disturbed is limited to a minor quantity that can be contained in one waste bag measuring 60 inches in width and length.

That is an important boundary.

A contractor should not assume that calling an activity a “minor disturbance” automatically makes it Class III work. The type of material, the activity being performed, and the amount affected all need to be considered.

Sometimes Avoiding Disturbance Is More Difficult Than Removing the ACM

There is also a practical and economic consideration.

A renovation contractor may be able to develop a procedure that technically avoids disturbing the remaining ACM, but that procedure may make reconstruction slower, more complicated, or difficult to execute consistently in the field.

Consider a flood cut where the lower portion of a wall system has been removed but asbestos-containing wallboard or joint compound remains immediately above the cut.

It may be possible to install replacement drywall without disturbing the remaining ACM.

• But can the new wallboard be properly fitted?

• Can it be fastened without penetrating ACM?

• Can the joint between the new and existing materials be finished without sanding or otherwise disturbing asbestos-containing joint compound?

• Can every employee performing the reconstruction reliably follow that procedure?

Those are practical questions that need to be answered before choosing to leave the ACM in place.

In some situations, expanding the asbestos abatement scope before reconstruction begins may provide a cleaner and more predictable solution than attempting to work around the ACM throughout reconstruction.

That does not mean additional asbestos removal is always required.

It means the decision should be deliberate.

The question should not simply be:

“Can we leave the asbestos?”

The better question is:

“Can we realistically complete the reconstruction without disturbing the asbestos—and can we control the work well enough to ensure that remains true?”

The Competent Person Becomes Critical

OSHA places significant responsibility on the competent person.

Under OSHA’s asbestos standard, a competent person is capable of identifying existing asbestos hazards in the workplace and selecting the appropriate control strategy, has the authority to take prompt corrective measures, and has specialized training.

The required level of training depends upon the work being performed.

For Class I and II asbestos work, OSHA states that the competent person must have comprehensive supervisor training meeting the criteria of EPA’s Model Accreditation Plan, such as an EPA- or state-approved course, or training equivalent in stringency, content, and length.

Competent persons trained for Class I and II work may also oversee Class III and IV work. OSHA provides a different training pathway for competent persons overseeing only Class III and IV activities.

This is considerably more than simply having someone on the renovation crew who has received basic asbestos awareness training.

Why This Matters to Renovation Companies

It is tempting to view completion of the abatement—or receipt of satisfactory clearance results—as the point where asbestos considerations end.

OSHA’s interpretation demonstrates why that may be incorrect.

A more complete way to look at the project is:  If ACM remains in the building, the contractor needs to understand where it is and determine how subsequent work will interact with it.

The presence of remaining asbestos does not automatically mean that it must be removed before reconstruction.

Likewise, completion of the original abatement does not automatically mean that the reconstruction contractor can disregard it.

Clearance Does Not Mean “Asbestos-Free”

One of the most important practical lessons is that completing an asbestos abatement project does not necessarily mean that all asbestos has been removed from the building.

A project may successfully remove the ACM presumed affected by work while leaving other ACM in place.

The renovation contractor therefore needs to understand what asbestos remains and where it is located before reconstruction begins.

That information needs to move from the survey and abatement phases into the reconstruction phase.

A successful clearance indicates that the abatement phase has met its applicable completion requirements. It should not automatically be interpreted by subsequent trades as meaning that the remaining building materials are asbestos-free.

Planning the Entire Renovation Project

This OSHA interpretation reinforces something EAST regularly emphasizes in training and consulting:

Asbestos needs to be considered as part of the entire renovation process—not simply as an isolated abatement project in the middle of it.

Before reconstruction begins, the project team should understand:

1. What ACM was identified?

2. What ACM was removed?

3. What ACM remains?

4. Where is the remaining ACM in relation to the reconstruction?

5. Can the reconstruction realistically be completed without disturbing it?

6. If it will be contacted, disturbed, or removed, what OSHA asbestos work classification applies?

7. What training and competent-person oversight are required?

8. What engineering controls, work practices, PPE, respiratory protection, or other requirements are triggered?

9. Would additional abatement simplify the reconstruction and reduce the possibility of unintended disturbance?

Answering those questions before reconstruction begins is much easier—and usually much less expensive—than addressing them after employees have already disturbed asbestos-containing material.

EAST’s Takeaway

The most important message from OSHA’s May 7 interpretation is straightforward:

Removing the water-damaged asbestos does not necessarily remove asbestos considerations from the renovation project.

It may be entirely possible to leave other intact ACM in place and design the reconstruction so that it is not disturbed. But that needs to be a deliberate decision based upon the actual construction activities.

The key question is not simply whether asbestos remains.

The key question is what the reconstruction work will do to the asbestos that remains.

Sometimes the best answer will be to work around the remaining ACM. Sometimes additional abatement will make more sense.

Either way, that determination should be made before reconstruction begins, with an understanding of the work methods that will actually be used in the field.

A successful asbestos abatement may complete one phase of a renovation project.

It does not necessarily end the employer’s OSHA asbestos responsibilities.

EAST Centers of NY provides asbestos, OSHA, respiratory protection, HAZWOPER, mold, and other environmental health and safety training and consulting services. Contact EAST if your organization needs assistance understanding how asbestos requirements apply to renovation and reconstruction activities.