Reroofing in Northern California

Most residential roofs in Placer County reach end-of-life between 20 and 25 years. By that point, the underlayment has dried out, the shingles have lost most of their granule layer, the sealants around flashings have failed, and you're spending more on repairs each year than the work actually returns in roof life. That's when a reroof — not another patch — is the financially right move.

A reroof is also the right call when you're selling within a few years (new roofs significantly increase resale value and reduce buyer pushback), when energy bills have climbed because of failing underlayment and ventilation, or when you've had multiple leaks in different locations indicating widespread system failure rather than a localized problem.

California building code allows up to two layers of asphalt shingles in many situations, and some contractors push layer-over work because it's faster and looks cheaper on the initial quote. The problem: a layer-over hides any damage to the decking and underlayment below, doesn't reset the warranty period, and traps heat against the structure. Most contractors we'd hire ourselves recommend tear-off for the same reason we do.

A full tear-off lets us inspect every square foot of decking, replace any damaged plywood or OSB, install fresh synthetic underlayment rated for the region's heat, and reset the entire roof system's design life. The marginal cost over a layer-over is small compared to the long-term value.

Modern architectural asphalt shingles remain the most popular choice in our service area — they offer 30-50 year warranties, excellent UV resistance for the region's sun, and a wide variety of profiles and colors. For foothill properties in Auburn, Newcastle, and Grass Valley, Class A fire-rated systems are mandatory and we install accordingly.

Concrete and clay tile suit Mediterranean and Spanish-style homes and routinely last 40-50 years. Metal systems — standing seam aluminum or stone-coated steel — are the longest-lasting option, ideal for fire-prone areas and homeowners who want a one-and-done install. We help you weigh material cost, structural capacity, neighborhood architecture, and resale considerations to land on the right choice.

There's no single "best" material — there's the right material for your specific home and how long you plan to own it.

Every reroof starts with a free on-site inspection. We climb the roof, measure, photograph problem areas, and discuss material options with you. We give a written estimate.

Installation typically takes a standard 5-10 business days for a residential roof. Day one is tear-off and decking inspection, followed by everything else — underlayment and flashing, primary material installation, ridge caps, gutter integration, final detail work, debris cleanup, and a walkthrough with the homeowner. Fernando personally inspects every job before it's marked complete.

We pull all required permits and coordinate inspections directly with the city or county so you don't have to.

View real before and after photos of complete reroofing projects completed by KTN Roofing across Placer County. Our gallery showcases the craftsmanship and clean finish that Northern California homeowners depend on.