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PABCO HO-25 and PABCO HZ-25 Roof Shingle, Product Identification Program



This shingle was principally sold under the name HO-25. It has also been referred to as Horizon and HZ-25.

It was sold by PABCO Roofing Products from September 16, 1984 through 1997.

It was primarily sold in Washington, Oregon and California. Small quantities were sold in Idaho, Nevada Hawaii, Utah and Montana. Very limited quantities were sold in Minnesota from approximately 1995 to 1997, and in Arizona.

Similar products are known to have been sold in some of these regions by other companies prior to, during and after this time period. This class action only applies to the PABCO HO-25 and PABCO HZ-25 shingles manufactured by PABCO Roofing Products.

The following pages provide product diagrams and information for identifying whether or not shingles are PABCO HO-25 and PABCO HZ-25 shingles.

The following diagrams illustrate several feature differences which distinguish PABCO HO-25 and PABCO HZ-25 shingles from either 3 tab shingles or laminated shingles.

PABCO HO-25 and PABCO HZ-25 Shingles

PABCO HO-25 and PABCO HZ-25 Shingles, Appearance As Applied



3 Tab Shingle

Typical 3 Tab Shingle, Appearance As Applied

Asphalt shingles are covered by colored granules. The application of specific colors in specific locations is key to the overall appearance of the roof. The location of specific colors and contrasts in colors is an important part of determining whether or not a given shingle roof is covered by PABCO HO-25 or PABCO HZ-25 shingles.

When the shingles are applied on a roof, they have only their lower portion visible. For PABCO HO-25 and PABCO HZ-25 shingles, that lower portion was 5 5/8" in height, the distance from the leading edge to the top of the cut out slots. The upper portion is not visible because it is covered by the bottom portion of the next layer of shingles.

There are differences between PABCO HO-25 or PABCO HZ-25 shingles and 3 tab shingles that aid in determining whether or not your shingles are PABCO HO-25 or PABCO HZ-25 shingles.

  • Structurally, the only difference is the overlay pads on the PABCO HO-25 and PABCO HZ-25 shingles. These are not present on a 3 tab shingle. To make a 3 tab shingle, a sheet of granule covered asphalt roofing is formed and pieces cut in the size and shape of a shingle. To make a PABCO HO-25 or PABCO HZ-25 shingle, there is an extra step between the formation of the sheet and the cutting of the shingle pieces. Additional asphalt "pads" were printed onto the surface of the sheet in specific locations and shapes. These asphalt pads were then covered by an additional layer of granules in a specific color pattern.
  • Appearance differences include:
    PABCO HO-25 and PABCO HZ-25 shingles always had a black shadow line. Most 3 tab shingles do not have a shadow line. The interrupted shadow line appearance generated by the overlay pad covering the shadow line in some areas is distinctive. This interrupted shadow line is uncommon [but not unknown] for 3 tab shingles.
    PABCO HO-25 and PABCO HZ-25 shingle overlay pads were a contrasting color to the area between the pads. Each pad was a single color. There were generally 3 to 5 different colors of pads. The area between the pads was always the same color. 3 tab shingles typically have subtle color differences along the shingle.

Additionally, PABCO HO-25 and PABCO HZ-25 shingles were always the same size, 13 1/4" by 39 3/8". The exposed height was always 5 5/8". The width of each tab [distance between cut out slots] was 12 7/8". 3 tab shingles are typically the same size, but some products are a different size, such as 12" by 36", with 11 3/4" tabs and a 5" exposed height.

These are the primary differences between PABCO HO-25 or PABCO HZ-25 shingles and 3 tab shingles. As previously stated, similar products are known to have been sold by other companies prior to, during and after the same time period as PABCO HO-25 and PABCO HZ-25 shingles were sold. The differences noted above may or may not apply to those other brands. This class action only applies to PABCO HO-25 and PABCO HZ-25 shingles.

Laminated Shingle

PABCO HO-25 and PABCO HZ-25 shingles were designed to look like laminated shingles. As applied, both products only show the area from the shadow line down. The "Overlay Pads" are a contrasting color to the area between the pads. This causes them to stand out and generates an appearance similar to the teeth against the backing shim of a laminated shingle [see diagram below].

There are differences between PABCO HO-25 and PABCO HZ-25 shingles and laminated shingles that aid in determining whether or not your shingles are PABCO HO-25 or PABCO HZ-25 shingles. The overlay pad on a PABCO HO-25 or PABCO HZ-25 shingle cannot be peeled up from the base shingle. The shim piece on a laminated shingle is adhered to the back of the other piece [with the teeth], positioned behind the teeth. With a laminated shingle, it is usually possible to peel up the tooth from the shim when the shingle is hot.

Typical Laminated Shingle, Appearance As Applied
  • Structural differences include:
    PABCO HO-25 and PABCO HZ-25 shingles were a single sheet. Where the overlaid pad was applied, the sheet was thicker, but that area was only a little thicker than the area between the pads. Laminated shingles have 2 full sheet thicknesses where the teeth are present and one sheet thickness [the shim] in the area between the teeth. There are also laminated shingles which have teeth formed from 2 layers, plus a single shim layer.
  • Appearance differences include:
    PABCO HO-25 and PABCO HZ-25 shingles always had a narrow shadow line formed by a stripe of black granules. The distance from the top of the cut out slot down to the bottom of the shadow line was about 1/2". Some laminated shingles have a shadow line, and some do not. The shadow line on a laminated shingle is typically wider than 1/2" and generally not a solid black color. Some laminated shingles have more than one band of color placed in a similar manner to a shadow line.
    The color contrast between the overlay pad and the base shingle for PABCO HO-25 and PABCO HZ-25 shingles is much greater than the contrast typically found between the teeth and shim on laminated shingles.
    In addition to the color differences from tooth to tooth or pad to pad, laminated shingles may have areas of different color shadings along the length of the shim. The PABCO HO-25 and PABCO HZ-25 shingles always had a single, consistent color for the area between the overlay pads.

If you have determined that your shingles have been made like PABCO HO-25 or PABCO HZ-25 shingles, the next step is to determine if they were manufactured by PABCO, or some other company. This class action litigation only applies to the PABCO HO-25 and PABCO HZ-25 shingles.

  • Structural differences include:
    PABCO HO-25 and PABCO HZ-25 shingles were always 13 1/4" by 39 3/8". Other manufacturers’ products may be a different size.
  • Appearance differences include:
    PABCO HO-25 and PABCO HZ-25 shingles always had a base shingle [area between the overlay pads] of a consistent color, with contrasting overlay pads. Some of the other bands may have used several shades of color on the base shingle.

These differences should help distinguish between the PABCO HO-25 and PABCO HZ-25 shingles and other products. However, PABCO does not have all possible information on the similar products made by other manufacturers. There are additional considerations possible that are too detailed to cover in this document. Products that meet all of the above details may still be determined to have been made a different manufacturer than PABCO Roofing Products, based upon additional examination and information.




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