Choose roofing materials for the whole roof system
Match material to slope, drainage and climate — and treat the deck, underlayment and flashings as part of the choice, not afterthoughts.
Roofing
Materials, roof form and repair — decided on evidence.
A roof is a system, not a surface. The slope you start with quietly rules out half the options.
Roofing choices are easy to reduce to a single product name, but the covering is only the visible layer. The slope of the roof, the deck beneath it, the underlayment, the flashings at every edge and penetration, and the way water is meant to leave — all of it decides whether a roof lasts. Getting the system right matters more than getting the brand right.
These guides help you reason about that system: which materials suit which roofs, how low-slope systems differ from steep-slope ones, and what a real assessment should cover before you commit to a repair or a full replacement. We make no emergency or safety claims and offer no remote diagnosis; a roof should be assessed on the roof, by a qualified professional. Do not climb onto a roof to inspect it yourself.
Low-slope roofing: systems and questions to ask
Where the low-slope line falls, the main membrane families in the CRRC categories, and the questions that separate one bid from another.
Roof repair or replacement?
What a thorough on-roof assessment should document, so the repair-or-replace decision rests on evidence rather than a sales visit.