Ask This Old House - Season 3 Episode 11
Ladder Safety; What Is It? Replacing an Old Retaining Wall

Kevin heads outside the barn to learn about ladder safety from expert John Drengenberg. Up at the loft, Kevin, Tom, Richard and Roger ask, ""What Is It?"" Then, Roger rebuilds a crumbling retaining wall with homeowner Colin White of Wakefield, Massachusetts using interlocking concrete blocks. More Info & Resources