CertainTeed Ridge Vent Installation Nationwide

CertainTeed Ridge Vent Installation: The San Francisco Owner’s Guide

If your CertainTeed ridge vent has failed or is nearing the end of its life, we stock CertainTeed-compatible ridge vent materials and install them throughout San Francisco, typically in one visit. Most ridge vent replacement jobs in San Francisco run between $450 and $1,100 installed, depending on roof length, pitch, and the condition of the existing opening. You’ll get a written price before any work starts, so you know the exact number before a single shingle moves.

Call (831) 228-3330

The way most San Francisco homeowners discover a failed ridge vent is during a leak investigation or a re-roof. Water stains near the peak of a ceiling, a musty smell in the attic, or shingle granules collecting at the downspout after heavy wind all point to the same area. The ridge vent sits at the highest, most exposed line of the roof, and it takes the full brunt of the wind off the Pacific. Over time, the plastic or fiber matting inside breaks down, the nails back out, and the vent stops doing its job, which is moving hot, moist air out of the attic before it condenses on the sheathing.

Most ridge vent repairs in this scope run between $450 and $1,100; you’ll see your exact number in writing before we start. Call (831) 228-3330 for a free estimate.

Which CertainTeed Models This Applies To

CertainTeed makes ridge vents under a few different names, and compatibility matters. The two most common we see on San Francisco roofs are the CertainTeed Air Vent ShingleVent II and the CertainTeed RidgeRunner. Both install at the peak, but they are not interchangeable. The ShingleVent II is a rigid plastic profile with a filtered baffle, typically 4 feet per section, 9 inches wide. The RidgeRunner is a flexible roll vent, usually 20 feet per roll and 11.5 inches wide. If the original install used ShingleVent II and someone swaps in a roll vent without checking the nail line and the shingle overlap, the first driving rain through the Sunset or the Richmond finds its way in.

Before you buy anything, get up in the attic opening or check the exposed ends at the gable. You’ll see a product name molded into the plastic or printed on the roll. Take a photo of it. That one photo saves us a trip and saves you the cost of a wrong guess. Erik Lindgren checks this himself on every ridge vent estimate, because a mismatched ridge vent is one of those failures that looks watertight on the ground and is anything but once the fog rolls in.

OEM or Aftermarket?

For CertainTeed ridge vents specifically, we recommend OEM. The profile of a CertainTeed ridge vent is engineered to sit flush with CertainTeed’s own hip and ridge shingles, and the nail line is set for that match. Aftermarket equivalents exist and some are fine, but the few dollars they save don’t justify the risk of a lifting edge or a nail that misses the reinforced strip. We stock the genuine CertainTeed profiles on the truck for most San Francisco jobs. We also carry compatible materials from GAF and Owens Corning, so if your roof is a mix of brands, we can still match the ventilating performance without leaving a patchwork detail at the peak.

Signs Your CertainTeed Ridge Vent Installation Is Failing

• Attic feels humid or smells musty. The ridge vent’s whole job is to let warm, moist air escape. When the internal baffle collapses or the filter mat clogs with dust and sea salt, the attic stops breathing. In San Francisco, where the humidity swings hard between fog and sun, that trapped moisture shows up as condensation on the sheathing.
• Water stains at the ceiling peak. A cracked or warped ridge vent lets rain blow directly into the attic opening. You’ll see staining near a ceiling-to-wall joint on the upper floor, usually on the windward side of the house. In the Outer Sunset and Outer Richmond, those windward faces take the worst of it.
• Shingle edges lifting near the peak. The ridge cap shingles are nailed through the ridge vent flange. When the vent’s plastic flange becomes brittle after years of thermal cycling, the nails lose their grip. The caps lift, and the next windy day makes it worse.
• Granules washing into gutters faster than normal. A failing ridge vent allows more heat and moisture to sit against the ridge cap shingles, accelerating granule loss. If your downspout has heavy granule buildup after mild rain, something is holding moisture at the peak.
• Visible cracking or sagging at the ridge line. From the ground, look at the ridge. If the line looks wavy, sagging in sections, or the vent profile is visible under lifted caps, the structure has moved. That’s the point to call before the opening becomes a leak.

Replacement Cost & What’s Included

For San Francisco roofs, a ridge vent replacement typically lands between $450 for a short, simple single-peak run up to $1,100 for a long or multi-plane roof with two ridges, steep pitch, or repair work to the existing opening. The range is driven mostly by how long the ridge line is and whether the plywood under the old vent needs cutting back or repair. The Parts and labor are listed separately on your written quote, so you see exactly what the material costs and exactly what the installation costs. No bundled mystery number.

Every quote includes the replacement ridge vent material matched to your roof, removal and disposal of the failed vent, inspection of the roof deck opening, installation with the correct nail pattern, and a clean-up photo before we leave. The 365-Day Done Right Promise covers the work. If something isn’t right, we make it right.

No surprise change orders. Sand Francisco roofs over 100 years old sometimes reveal rot under the old vent, and if that happens, we show you a photo and a written price for the repair before cutting anything away. You approve the number first.

DIY or Call Us?

A ridge vent replacement is roof work, and on a San Francisco roof that often means working near the edge. If you’re comfortable on a ladder, you can do some useful checks yourself: inspect the attic side of the ridge for daylight gaps, look for cracked plastic at the gable ends, and note whether the caps look straight from the ground. That’s where we recommend stopping.

The installation side is not a beginner project. It means cutting back shingles and underlayment at the peak, removing old nails from a narrow working line, and keeping the roof watertight while you work. Most San Francisco homes have compound pitches or multiple ridges, and each one multiplies the chance of a mistake that leaks. Falls from the ridge are the more serious risk. We wear tie-offs on steep pitches and have the right fasteners for every deck type. If you’d rather keep your feet on the ground, call (831) 228-3330. We’ll put the number in writing first.

FAQs