Simonton Roofing Nationwide | Barrett & Sons Construction

Simonton Roofing: The Los Angeles Owner’s Guide

We stock and install Simonton-compatible roofing parts across Los Angeles, with most replacements running between $470 and $2,125 depending on the part and scope of the failure. We keep the most common Simonton flashing, vent, and seal components on the truck, so we can usually match and replace the same day we look at it. What we see most often: a homeowner notices a water stain on the ceiling, or hears a rattle during the Santa Ana winds, or spots a shingle in the yard after a winter storm. By the time it’s visible from the ground, the part has usually been failing for a while.

Call (877) 610-1318

If you’ve got a Simonton roof and something’s not right, call us at (877) 610-1318. We’ll tell you what we think over the phone before we ever schedule a trip out.

Which Simonton Models This Applies To

Simonton builds for the California market, which means their flashing kits and vent collars are sized for our roof pitches and our sun exposure. The two most common lines we see in Los Angeles are the Simonton Pro-Finish and the Simonton Reflections series, though we also work on their earlier builder-grade models from the 1990s and early 2000s. Here’s the compatibility gotcha we run into constantly: a homeowner buys a generic pipe boot at the big-box store, and it doesn’t match the Simonton collar diameter. Simonton uses a slightly wider collar on their vent stacks than most off-the-shelf parts, especially on homes built after 2005. If the boot doesn’t seat fully, it leaks at the base within a season.

We match by the stamp on the part itself whenever possible. Every Simonton flashing piece has a series code etched into the metal or molded into the rubber, usually on the underside or the back flange. Snap a photo of that code before you call us. If the stamp is worn off, we measure the opening and the flange width on-site. On the OEM-versus-aftermarket question: for seals and boots, a quality aftermarket part with the same dimensions is fine, and it’ll save you real money. For flashings and ridge caps, we recommend OEM Simonton because the bend radius and the alloy match the original roof profile. We carry both, and we’ll be straight with you about which one makes sense for your house.

Signs Your Simonton Roofing Is Failing

• Water staining on ceilings or exterior walls – This almost always traces back to a failed boot or flashing seam. The rubber collar around a vent pipe dries out and cracks in Los Angeles sun exposure, which runs 260-plus days a year here. The crack starts hairline, and by the time the stain shows up, it’s been leaking for months.
• Granules in the gutters or at downspout bases – Simonton shingles shed granules as they age, but a sudden increase means the mat is breaking down. This is common on south-facing slopes in Los Angeles, where UV exposure is hardest on the roofing material.
• Lifted or curling shingle edges near ridges and valleys – The adhesive strip fails first on Simonton products that have passed the 15-year mark. Heat accelerates it. Once the edge lifts, wind gets under it, and you’ll start losing shingles during Santa Ana events.
• Rust or corrosion on flashing around chimneys and skylights – Coastal moisture in the air over Los Angeles, even miles inland, puts flashings through a wet-dry cycle that accelerates corrosion. A rusted flashing seam is a leak waiting for the next rain.
• You hear flapping or rattling during wind – That’s a shingle or a piece of ridge cap working loose. If you hear it, part of the roof is already moving, and a moving part is a failing part. The next big blow takes it off completely.

Replacement Cost & What’s Included

In Los Angeles, most Simonton roofing parts fall into this range: vent boot replacement runs $470 to $710 installed, flashing replacement runs $590 to $1,180, and a partial shingle or ridge cap repair lands between $470 and $1,180. A full roof replacement on a Simonton product line runs $9,440 to $23,600, which is a different conversation, but I want you to see the whole picture.

What drives the range: roof pitch, how many stories you have, how accessible the failure is, and whether we’re replacing one part or several that failed together. Every quote from us includes the part, the labor, the haul-off, and the written warranty on the work. We don’t do allowances on roofing parts; you get a line-item price before anything gets ordered. If the scope changes once we’re on the roof, you get a written change order before we touch it. That’s how we’ve done it since 1998, and it’s the only way I’ll do it. Call (877) 610-1318 for an exact quote, and ask about the $40 off any repair over $200.

DIY or Call Us?

Some things an owner can safely check from the ground or a ladder without going on the roof: look for missing granules in the gutter, check for visible shingle lift at the edges, and look for rust stains on flashing that’s visible from the eave. You can also check the attic on a rainy day for daylight or water at penetrations. Those are all smart things to do before you call us, because they help us diagnose faster.

What you should not do: get on the roof itself. A steep-pitch Los Angeles roof with loose granules is slippery, and a fall from a two-story eave changes your life. High-tension work, even something that looks simple like resealing a vent boot, involves sealants that need to cure at the right temperature and in the right thickness. If the boot is cracked, the seal underneath usually is too, and a homeowner patch job just moves the leak six inches over. We’ll do it right the first time, or we’ll come back and make it right. That’s the promise on every job we do. Call (877) 610-1318 and we’ll take a look – no trip charge inside Los Angeles County.

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