daf37a6b_Armour_Exteriors__Definition
[Term] Racking [Definition] 
a method of asphalt shingle application, also referred to as the straight-up method, whereby shingle courses are applied vertically, up the roof rather than laterally or across and up. The NRCA Roofing and Waterproofing Manual—Fifth Edition Glossary 997
Armour Exteriors
Definition