GAF Slateline

What This Service Involves

Slateline is part of GAF's designer collection, cut with distinctive tapered slots that create the crisp, rectangular shadow lines of a slate roof. It brings a stately, architectural look to Northwest homes without the tremendous weight of real slate. The lighter asphalt construction avoids the structural reinforcement genuine slate often requires. Its algae-resistant granules help maintain that clean, formal appearance despite our streak-prone skies. It appeals to homeowners who want the dignity of slate styling at an accessible price point.

Benefits

Tapered, notched profile that mimics formal slate lines; Stately curb appeal without the weight of real slate; No structural reinforcement typically needed for slate; Algae-resistant granules to keep the look clean; Designer styling at a more accessible price than slate

Our Process

1) Tear off the old roof and inspect the deck for moisture and rot; 2) Apply ice-and-water membrane and synthetic underlayment at key areas; 3) Install Slateline shingles aligned to preserve the crisp slate pattern; 4) Cap ridges and seal all flashings and penetrations

What Affects the Cost

Roof size, pitch, and design complexity; Designer-tier shingles cost more than standard architectural; Alignment labor to maintain the slate pattern; Deck repairs uncovered at tear-off; Chosen color and underlayment upgrades

Best Time of Year

Slateline installs through most of the year, with dry summer and early-fall windows best for clean sealing.