Asbestos

Floor Tile Removal

Can flooring contain asbestos?

Flooring, including sheet vinyl, vinyl or asphalt floor tiles and any associated paper-like backing, mastic, adhesive or glue, may contain asbestos. In the past, asbestos fibers were added during the production of flooring materials to strengthen the flooring and to increase its durability.

When is the removal of flooring hazardous?

Flooring that contains asbestos, when intact and in good condition, is generally considered nonfriable and is not hazardous.

Heat, water, weathering or aging can weaken flooring to the point where it is considered friable. Friable flooring includes any material containing more than 1 percent asbestos that can be crumbled, pulverized or reduced to powder with hand pressure. This includes previously nonfriable flooring material which has been damaged to the extent that it may be crumbled, pulverized or reduced to powder by hand pressure. Flooring can also be made friable during its removal. Friable materials can release asbestos fibers into the air. Once in the air, asbestos fibers present a health hazard to people who inhale those fibers.

Residential Flooring

Can I remove asbestos flooring myself?

Removing resilient floor coverings is a common occurrence during home remodeling projects. Resilient floor coverings include linoleum or sheet vinyl and floor tiles. Options for dealing with asbestos-containing flooring include removal or installing new flooring over it.

The Minnesota Department of Health (MDH) recommends using a licensed asbestos contractor to remove asbestos-containing flooring. However, the information in this document will assist the homeowner who decides to remove the asbestos-containing flooring themselves do the work in a safe manner. It is important for the health and safety of you and your family that you perform the work correctly. Using the proper equipment, preparation, removal procedures and clean up are important in reducing exposure to asbestos fibers.

What tools do I need?

The following equipment should be used when removing floor coverings:

  • Utility knife - for cutting polyethylene sheeting
  • Metal putty knife - for removing material from flat surfaces
  • Razor scraper - for removing material from flat surfaces
  • Abrasive scrub pads - for removing residual linoleum backing and adhesive.
  • Spray bottle/tank - for holding amended water
  • Amended water - make by adding 1 cup of dish soap to 5 gallons of water
  • Mop/disposable towels - for clean up
  • Duct tape - for sealing openings and bags
  • Polyethylene sheeting (poly) - for isolating work area and covering any vents or openings
  • Waste disposal bags - heavy-duty yard waste bags work best
  • Boxes - to put floor tile in after removal
  • Personal Protective Equipment (PPE) - Respirator, disposable work suits, gloves, boots and eye protection.

How do I prepare the work area?

To prepare the work area, remove all movable objects from the work area. This is done to prevent any contamination of these objects and reduces clean-up time. Any object that cannot be removed should be covered with poly and sealed with duct tape. Next, the work area should be isolated. If the work area is properly isolated, any asbestos fibers released during the work will be restricted to the work area. Isolate the work area by turning off the heating and air conditioning system for the work area and any vents should be covered with poly and sealed with duct tape.

Doorways and any other openings should also be covered with poly and sealed with duct tape. Access to the work area should be limited to one doorway. Cover the doorway with poly and seal with duct tape. Then cut a slit in the poly to allow you to enter and exit the work area. Cover the slit with an additional poly flap secured at the top of the door. This should be the only access to the work area. This will also limit air movement into and out of the work area.

How do I remove it?

Before beginning removal, make sure that all tools and equipment that are needed are inside the work area. You should limit the number of times you exit the work area once asbestos-containing materials are disturbed. The personal protective equipment you choose should be put on at this time.

Both floor tile and linoleum need to be wetted with amended water before any removal begins or cuts are made. Amended water suppresses the release of asbestos fibers into the air.

To Remove Floor Tile
Floor tile is most easily removed from the edges. Use a hammer and putty knife or similar tool to work under the edges of the tile and pop the tile loose. Once the first tile is loose, work the putty knife at a 45 degree angle to gently pop the remaining tiles loose. Avoid breaking tiles during removal to reduce your exposure to asbestos fibers.

To Remove Vinyl Floor Sheeting (Linoleum)
Linoleum may be adhered on the edges or over the entire floor surface. It can be removed by first cutting the material with a utility knife into manageable sections, about 6" wide. Remove the linoleum at the edges by peeling back the material. Use a metal putty knife or razor scraper to scrape the bottom edge of the linoleum. Continue to wet the material as it is scraped and pulled up. The linoleum backing may separate from the linoleum during removal and remain adhered to the floor. Any residual material can be removed by thoroughly wetting with amended water and hand-scrubbing with an abrasive pad.

Waste Materials
Floor tiles should be placed into poly-lined waste boxes. This will prevent additional breakage and potential release of fibers. Linoleum should be wrapped in poly sheeting and sealed with duct tape. Wipe down the exterior of the boxes and poly wrap and remove the waste material from the work area. Continue this process until all flooring has been removed.

Adhesives
In some cases, the adhesives holding the floor tile or linoleum may need to be removed. Chemical solvents or amended water can be used to accomplish this. Check with the manufacturer about using chemical solvents. Some chemical solvents are not compatible with new adhesives. Do not sand or grind adhesives. Adhesives may contain asbestos and fibers may be released into the air through this action.

How do I clean-up?

Clean-up is essential when removing asbestos-containing materials. In this step, you are attempting to remove all the potential asbestos dust and particulate that remains in the work area. The chance of a future asbestos exposure is high if a thorough cleaning and inspection are not done. Wipe all surfaces within the work area with a damp cloth. This includes all poly sheeting in the work area. Rinse the cloth and change the water often to prevent recontamination of surfaces in the work area. Inspect all surfaces for any dirt, dust or debris, and re-clean if necessary. All equipment used for removing the flooring material should be cleaned and inspected. Remove all equipment from the work area.

Next, take down the poly sheeting and place it into waste bags. Re-inspect the work area and re-clean, if necessary. Place all towels and mop heads into waste bags. To decontaminate yourself, wash all exposed skin. Remove your disposable suit by rolling it up inside out and disposing it in a waste bag. Place all poly, towels and other waste into bags and seal with duct tape. It is also recommended that you take a complete shower to remove any potential asbestos fibers still clinging to your body and hair.

How do I dispose of the waste?

MDH recommends that all asbestos debris and waste is disposed of in a landfill that accepts asbestos-containing waste. There are three methods of disposing of asbestos waste and they are:

  • Contact local waste hauler for special pick-up.
  • Contact licensed abatement contractor for pick-up and disposal.
  • Dispose of waste yourself.

A list of landfills accepting asbestos can be obtained from the Minnesota Pollution Control Agency (MPCA).

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Commercial Flooring

When is the removal of flooring regulated?

MDH does not regulate non-friable materials. These are materials that cannot be crumbled, pulverized, or reduced to powder by hand pressure. However, if you are removing greater than 160 square feet of non-friable flooring material and the removal method you are using causes any portion to become friable, then removal must be performed according to all MDH Regulations.

What removal methods can make non-friable flooring friable?

Just about any removal method can make a previously non-friable flooring material friable. The following removal methods will render previously non-friable flooring material friable:

  • shot blasting
  • mechanical chipping
  • mechanical grinding
  • mechanical sanding
  • mechanical sawing
  • other mechanical means

The following removal methods have a lower probability of rendering previously non-friable flooring friable, but still may make the material friable:

  • hand tools
  • ice chippers
  • spud bars
  • solvents
  • water
  • heat or infrared

How do I know when non-friable flooring material becomes friable?

Flooring material should remain intact during the removal process. If the flooring material you are removing begins to break, your previously non-friable flooring material is now be considered friable and regulated by MDH. See the guidance photographs at the bottom of this page.

I thought floor tile removal wasn't regulated as long as the floor tile is non-friable and I'm using hand tools to remove it. Isn't this true?

MDH, in conjunction with MPCA has developed the following guidance as to when MDH and MPCA consider floor tile removal as regulated.

Removal of floor tile in commercial settings offers a unique challenge to licensed asbestos contractors. In its undisturbed state, floor tile may be classified as a nonfriable material and therefore non-regulated. However, floor tile may be damaged during a removal project to the extent that it would be considered a regulated friable material.

Building owners and contractors, both licensed and unlicensed, believe that using spud bars, ice chippers, etc., is always a non-regulated removal method because hand tools are being used. Using hand tools to remove floor tile does not mean the floor tile will remain nonfriable.

MDH and MPCA consider the damage done to the floor tile, even if hand tools are used for the removal. Damage directly relates to the friability of a material.

There is nothing in MDH’s or MPCA’s rules that states using hand tools is a non-regulated removal method. Hand tools may be used to remove floor tile, but if the floor tile becomes damaged or will become damaged, then the asbestos-containing floor tile will be regulated by MDH and MPCA.

The MDH had issued an administrative penalty order (APO) to a licensed asbestos contractor for failing to notify MDH and follow proper work procedures during a floor tile removal project. The asbestos contractor contested the APO and a hearing was held in front of an administrative law judge. The administrative law judge concluded that MDH had correctly determined that the floor tile had been rendered friable as defined by the Minnesota Rules and therefore the project was regulated by the MDH. View the administrative law judge's finding.

What if the non-friable floor tile I'm removing becomes friable?

If you are removing non-friable floor tile in excess of 160 square feet and there is the potential for the material to become friable, take the following steps:

  1. You need to submit a courtesy notification to the MPCA ten (10) working days in advance of the start date of the project. Do not submit courtesy notifications to MDH.
  2. When you determine that the floor tile is becoming friable, stop work. The project is now regulated by MDH and MPCA.
  3. You need to inform MDH that an emergency notification is being submitted for the floor tile removal project.
  4. You need to amend the courtesy notice that was submitted to MPCA.
  5. When the emergency notice has been submitted, you may then proceed to complete the work as a regulated asbestos project following all required work practices.

NOTE: The emergency notification and permit are issued only for the material that is part of the emergency situation! The permit and notification cannot be extended to any additional material.

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Guidance Photographs

The following series of pictures of floor tile removal projects is for illustrative purposes. The floor tiles in all these pictures were removed using hand tools by licensed asbestos abatement contractors.

Photo #1: Removed using a putty knife and a hammer
Photo #2: Removed with an ice chipper
Photos #3 & 4: Removed with dry ice and an ice chipper
Photos #5 & 6: Removed with hand tools and is friable
Photo #7: Removed using a carpet puller and is friable
Photo #8: Removed with hand tools and is friable
Photo #9: Removed non-friably with potential to become friable
Photo #10: Removed non-friably with potential to become friable

Photo #1 - This asbestos-containing floor tile was removed using a putty knife and a hammer. The tile remained in whole pieces with little breakage.

Whole Floor tile

 

Photo #2 - This asbestos-containing floor tile was removed with an ice chipper. The tile remained in whole pieces with little breakage.

Whole Floor tile

 

Photos #3 & #4 - The asbestos-containing floor tile in these photos was removed with dry ice and an ice chipper. Too much breakage is occurring to the floor tile. The project is now considered a regulated project, subject to all MDH asbestos regulations.

Floor tile damaged by dry icer

Floor tile damaged by dry ice

 

Photos #5 & #6 - The floor tile in these photos is friable. It was removed with the hand tools that can be seen near the top of Photo #6. Floor tile being removed in this manner must be removed according to the MDH Asbestos Abatement Rules.

Close up of damaged floor tile

Room with damaged floor tile

 

Photo #7 - When removing carpet, it is important to make sure the tile does not stick to the carpet and break. This floor tile stuck to the back of the carpet and broke when the contractor attempted to remove the carpet with a carpet puller. Floor tile in this condition is friable and regulated by MDH. Note the white specks on the black mastic. These are pieces of tile that remained stuck to the mastic.

Friable floor tile stuck to carpet

 

Photo #8 - This photo shows that hand tools (hammer, spud bar) can easily turn previously non-friable floor tile into friable floor tile.

Floor tile made friable using hand tools

Photo #9 - The floor tile in this picture may have been removed non-friably and then placed in a lined fiber drum. The work crew used a hand tool to break up the floor tile in order to fit more into the drum. The floor tile has now become friable during the handling process. The floor tile needs to remain nonfriable from removal until it is disposed of.

Damaged floor tile in barrel

 

Photo #10 - The floor tile in this picture may have been removed non-friably. Even though the floor tile was removed as a nonfriable material, it has the potential to become friable during the handling process. The floor tile needs to remain nonfriable from removal until it is disposed of.

Damaged floor tile in work area

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Updated Thursday, October 10, 2013 at 06:30AM