All asphalt shingles carry some kind of warranty, which is usually limited to just the shingles. System warranties, however, cover the entire roofing system, including the key components that work together to protect your home and deliver lasting performance. If that roofing system ever fails, then the manufacturer covers the cost of the roof, accessories and labor. Nonsystem warranties cover only the shingles, leaving the homeowner to pick up the substantial cost of the accessories and labor.
A Complete Roofing System Consists of:
Roof deck - the roof's foundation, typically constructed with high-quality plywood or 1 x 8 Pine Boards
Underlayment - organic felt paper or synthetic membrane that sits on top of the roof deck, covering and protecting any exposed portions to increase the longevity of your roof
Ice & Water Barrier - a self sealing membrane which runs along the roof's edge (Where required by code and the valleys. This membrane also prevents moisture from leaking through openings around gutters, eaves, chimneys, skylights or vents
Start strips - These are placed around the roofline to keep wind and water from getting under the shingles and to prevent shingle blow-off at the roof edge
Shingles - the outer layer of your roof, shingles come in a range of colors, textures, and thicknesses that give your roof style and function
Flashing - these go around vent pipes, chimneys and other places on your roof where water can penetrate and are made of a combination of galvanized steel and high quality EPDM rubber.
Ventilation - vents allow heat and moisture to escape from your attic, preventing premature wear and tear on the roofing materials while keeping your home clean and comfortable
Shingle ridge cap - these go along the roof's peak and can improve the appearance of the system