MATERIALS KNOWLEDGE
Building materials buying guides
Understand the product options, check the measurements and put together a complete materials list. Start with these roofing guides.
GAF vs. CertainTeed shingles
Compare GAF Timberline HDZ with CertainTeed Landmark and Landmark PRO. Review shingle construction, colors, coverage, roof accessories and warranty questions.
Read the guide →Roofing materials checklist
Plan a shingle roofing materials list with field shingles, starter strips, ridge caps, underlayment, flashing, ventilation and quantity calculations.
Read the guide →Explore the roofing catalog
Roofing shingles · Roofing accessories · GAF · CertainTeed Roofing