High concentration of asbestos found in cement
shingles also known as Transite Board.

When you are renovating or demolishing an older house, there is a very high probability of encountering asbestos containing building materials. Homes built from the early 1920s to the late 1990s are known to contain multiple types of asbestos containing products. There are hundreds of different asbestos containing building materials above and beyond insulation. Small percentages as low as 0.5% content pose a health risk to one’s health and need to be removed by a qualified and experienced abatement contractor.

List of Common Suspected Asbestos Containing Materials (ACMs):

Please be aware that if asbestos containing materials are in good condition and left intact, they do not pose a significant danger of releasing asbestos. These materials are only hazardous when they deteriorate or are disturbed, such as when they are handled, sanded, drilled into, or broken up so that they crumble.

This list is not comprehensive and contains only the most frequently occurring asbestos containing building materials found in older homes.

Vinyl Floor

Texture Coat

Stucco

Brick Mortar

Blown Insulation

Linoleum

Paper Tape

Ceiling Tile

If your house was built prior to 1995, it is required by WorkSafeBC that you test for asbestos and lead prior to renovation and demolition. An Epoch Environmental technician adheres to WorkSafeBC’s minimum sampling guidelines when collecting suspected building materials. They are sent to an accredited laboratory, Epoch Analytical for testing.

It is not recommended that you collect samples on your own as you may not have knowledge about which materials may contain and where they may be concealed. Asbestos fibres are microscopic and cannot be identified with the naked eye. Furthermore, most city demolition permit processes require a Qualified Professional to conduct the Hazardous Materials Survey/Assessment.

You can’t identify asbestos by looking at it. Asbestos fibers are microscopic. The only way to confirm its presence is to take a sample of the material and have it tested by an accredited laboratory.

Asbestos is often mixed with other materials. If you work in a building built before 1990, it’s likely that at least some parts of the building will contain asbestos.

There are over 3000 construction and industrial products. Common applications include:

Most products made today do not contain asbestos. Those few products made which still contain asbestos that could be inhaled are required to be labeled as such. However, until the 1970s, many types of building products and insulation materials used in homes contained asbestos. Common products that might have contained asbestos in the past, and conditions which may release fibers, include:

1. STEAM PIPES, BOILERS, and FURNACE DUCTS insulated with an asbestos blanket or asbestos paper tape. These materials may release asbestos fibers if damaged, repaired, or removed improperly.
2. RESILIENT FLOOR TILES (vinyl asbestos, asphalt, and rubber), the backing on VINYL SHEET FLOORING, and ADHESIVES used for installing floor tile. Sanding tiles can release fibers. So may scraping or sanding the backing of sheet flooring during removal.
3. CEMENT SHEET, MILLBOARD, and PAPER used as insulation around furnaces and woodburning stoves. Repairing or removing appliances may release asbestos fibers. So may cutting, tearing, sanding, drilling, or sawing insulation.
4. DOOR GASKETS in furnaces, wood stoves, and coal stoves. Worn seals can release asbestos fibers during use.
5. SOUNDPROOFING OR DECORATIVE MATERIAL sprayed on walls and ceilings. Loose, crumbly, or water-damaged material may release fibers. So will sanding, drilling, or scraping the material.
6. PATCHING AND JOINT COMPOUNDS for walls and ceilings, and TEXTURED PAINTS. Sanding, scraping, or drilling these surfaces may release asbestos.
7. ASBESTOS CEMENT ROOFING, SHINGLES, and SIDING. These products are not likely to release asbestos fibers unless sawed, dilled, or cut. ARTIFICIAL ASHES AND EMBERS sold for use in gas-fired fireplaces. Also, other older household products such as FIREPROOF GLOVES, STOVE-TOP PADS, IRONING BOARD COVERS, and certain HAIRDRYERS.

Most of the time, no. The common materials used in home construction are floor tile, roofing and siding. These materials are very strong and don’t readily crumble and release the asbestos fibers unless they are subjected to strong forces. Occasionally other materials such as pipe insulation and thermal insulation, such as batt or blown-in insulation, are used in home construction. If you determine that you have this type of material, through inspection and analysis by a properly qualified inspector and laboratory, you should seek the help of a consultant to aid you in determining what you need to do to remedy your situation. If you never have the need to disturb these materials, you may be able to leave them alone. But if you know that a needed repair or renovation will disturb the material, you may want to start planning with your consultant to test and abate the asbestos prior to the project.

WorkSafeBC requires a survey for Hazardous Materials to be completed by a qualified professional before any demolition or renovation work begins on structures built prior to 1995. Additionally, WorkSafeBC also requires written confirmation that ALL hazardous materials identified in the survey have been either safely contained or removed. In most cities and municipalities in BC, this survey is a condition of the demolition or deconstruction permit process.

The Hazardous Materials Survey is also a valuable pre-purchase report for home and building buyers to fully understand the potential scope (and cost) of remediation that a building or home may require prior to renovation. Please contact Epoch Environmental Consulting for more information. Epoch staff employs WorksafeBC certified Level S trained consultants and field technicians who have hands-on experience with many types of asbestos and hazardous materials issues. For over 30 years, Epoch Environmental Consulting has accumulated in-depth knowledge and experience to form the basis of their ability to efficiently manage remediation projects. Its partnership Epoch Analytical Inc, enables our experts to ensure concise and quality results and quick turnaround, from the proposal stage through to project completion.

You will need a permit from the city or municipality for pre-demolition or pre-renovation work. The requirements vary from city to city, so please contact City Hall directly. A Notice of Project must be filed with WorkSafeBC by the employer, owner, or prime contractor for any asbestos work at least 48 hours before starting construction work activities. A copy of the completed from must be posted at the worksite before asbestos removal activities commence.