ASBESTOS ROOFING MATERIALS

NON-FRIABLE MATERIAL

Asbestos roofing materials were used in the past, asbestos fibers were added during the construction of roofing materials to add strengthen and increase durability. By adding asbestos during the manufacturing of roofing materials it also adds some fireproofing.

Sample Site Selection

1. A sample can be collected from any location on the edge of the ceramic siding. If variations in the appearance of the siding are present, then each different area of ceramic siding should be sampled.

Collecting the Sample

1. Score the ceramic siding to provide a break-line.

2. The shaving foam can be used to minimize dusting at the sample site. Simply deposit a small quantity of foam along the score lines for the sample before breaking the sample.

3. The material can be broken by setting the screwdriver blade in the scoreline and tapping it with the hammer, or by moving the blade of the screwdriver under the tile and taping the scoreline with the hammer to break the tile.

4. At least a 1 square inch piece of siding should be collected.

5. Place the siding sample in the plastic bag.

6. Seal the plastic bag.

7. Write the location of the sample on a piece of paper and deposit the sample bag and the piece of paper in a second plastic bag.

Sample Site Selection

1. A sample can be collected from any location on the roof that appears to be a homologous part of the roof. If variations in the appearance of the roofing are present then each different area of the roof should be sampled.

Collecting the Sample

1. The shaving foam can be used to minimize dusting at the sample site. Simply deposit a small quantity of foam along the cut-lines for the sample before cutting the sample.

2. At least 1 square inch piece of roofing should be collected.

3. The roofing should be sampled through all layers of shingle, tar (asphalt), and paper. More shaving foam can be applied to whenever dusting is a concern, including during the removal process below (step 4).

4. The flathead screwdriver may be needed to remove the sample from the substrate.

5. Place the roofing sample in the plastic bag.

6. Seal the plastic bag.

7. Write the location of the sample on a piece of paper and deposit the sample bag and the piece of paper in a second plastic bag.

The finished sample can be delivered to Microlab Northwest or mailed if well sealed and solidly packaged.