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Assistance for all home, condo and apartment owners with hardboard siding claims.
John R. Cobarruvias johncoby@sidingclaims.com P.O. Box 590152 Houston, TX 77259-0152 281-486-5203

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ABTCO/ABITIBI Siding Markings

Identifying the type of siding you have is the hardest part of the entire process. Besides finding the manufacturer's markings on the back (see pictures below) or identifying the pattern, you can also match the American Hardboard Association codes stamped on the boards. Look for the AHA markings and use the following tables to help you.
The ABTCO AHA markings are in bold.
ABTCO Marking
See below for more pictures.


Plant Number
Plant Location
Owner
AHA01 International Falls, MN Bosie Cascade
AHA02 Broken Bow, OK Weyerhaeuser
AHA03 Diboll, TX Temple
AHA04 Roaring River, NC Abitibi/ABTCO, LP
AHA05 Forest Grove, OR Forestex
AHA06 Laurel, MS Masonite, IP
AHA07 Catawba, SC Champion, GP Bowwater, US Plywood
AHA08 Ukiah, CA Masonite, IP
AHA09 Not used for siding Not used for siding
AHA010 Klamath Falls, OR Weyerhaeuser
AHA011 Sturgeon Falls, ONT MacMillan, Weyerhaeuser
AHA012 Towanda, PA Masonite, IP
AHA013 Not used Not used 
AHA014-19 Not used for siding Not used for siding
AHA20 Klamath Falls, OR Weyerhaeuser
ABTCO Siding
ABTCO
This is a sample of ABTO. Notice how similiar it is to Masonite Woodsman. The only difference I found besides the markings is the sharp edge at the drip line.
ABTCO Markings
The back of the above board.
ABTCO Pattern
A close up of the back side above.
ABTCO-ABITIBI
A sample from North Carolina.
ABTCO-ABITIBI
The same sample above. Notice the smooth finish and the bead at the bottom.
ABTCO Triple Lap
Again very simliar to Masonite Countryside triple lap. Hard to notice the difference.
ABTCO Stamp.
This stamp read "ABITIBI-PRICE" Notice the American Hardboard standard number 135.6 followed by the date it was produced 1984
ABTCO Damage.
Notice the waving, uneven look on this house built by Centex Homes.



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