Blue Backer™ 3/4" Insert - one-foot (1') lengths may be used instead of Blue Anchors™ when mechanical fastening to the wall surface is NOT required. If mechanical fastening is NOT required on either side of the wall, then two (2), one-foot (1') lengths of Blue Backer™ 3/4" may be used per block. If mechanical fastening is required on one side of the wall surface, then one (1), one-foot (1') length of Blue Backer™ 3/4" may be used per block. Note: Blue Backer™ 3/4" Inserts are often used on both sides of stem walls since mechanical fastening is seldom required in these areas. Many builders use at least one package of Blue Backer™ 3/4" for each project.

Package of 1,100' = $110.00

Blue Backer™ 3/8" insert - one-foot (1') lengths may be needed at the butt joints between two Blue Star blocks where one block face has been cut. The number of lengths required is dependent upon such factors as number of corners, doors, windows, and other openings as well as on the techniques of each builder. Many builders use at least 4 packages of Blue Backer™ 3/8" for each project.

Package of 100' = $5.00