CGI Roofing Nationwide

CGI Roofing: The Houston Owner’s Guide

We stock and source CGI-compatible roofing panels, flashing, ridge caps, and the fasteners and sealants that hold them together, and most replacement work in Houston runs $400 – $1,800 installed depending on how much surface area failed and whether the underlayment below it is still sound. If you’ve got a CGI roof that’s leaking, lifting at the edges, or showing rust blooms at the screw lines, that’s usually the moment a homeowner starts googling “CGI roofing Houston” to figure out whether it’s a patch job or a panel job. We’re Penhallow Remodeling Houston, and while we’re a full-service Houston remodeling company rather than a factory CGI dealer, we keep a rolling stock of the common profiles and a straight answer on price before any work starts, written down, the way Trevor Nash insists it should be.

Call (254) 527-5340

Which CGI Models This Applies To

CGI manufactures standing-seam and exposed-fastener metal roofing in a few distinct series, and the compatibility detail that trips up a lot of Houston owners is this: the older CGI panels are not interchangeable with the current-generation profiles, even when they look identical from the ground. If you’re ordering a replacement panel for a roof installed before roughly 2010, the rib height and the clip geometry may not match what’s sitting on your deck right now. The practical fix is to take a clear photo of the end profile, measure the center-to-center distance between ribs, and check the underside stamp if it’s visible. The most common CGI lines we see in Houston are the 138T and 238T trapezoidal profiles, plus their standing-seam SL-16 series, and each takes a different clip, screw length, and ridge detail. OEM CGI panels carry the factory paint and warranty matching, but quality aftermarket equivalents from Galvalume substrate manufacturers can match the gauge and profile at a meaningfully lower material cost; the honest tradeoff is that the finish warranty won’t be CGI’s. We’ll always tell you which one you’re getting, and paint the cost difference in writing before you decide.

Signs Your CGI Roofing Is Failing

• Rust staining radiating from the screw lines. The neoprene washers under exposed fasteners harden and split after 10 – 15 years in Houston’s heat and humidity. Once water reaches the bare steel edge of the fastener hole, you get the telltale brown streaks running down the panel face. The panel itself may still be fine; it’s usually the fastener and washer that gave up first.
• Oil-canning that has started to oil-can more aggressively, or visibly “pops” in wind. Metal expands and contracts with Houston’s daily temperature swings, and loose clips let a panel flex until the metal fatigues at the clip line. What starts as a cosmetic waviness becomes a structural crack if the clip tension is never restored.
• Water staining on the ceiling near a ridge or eave, not the open field of the roof. This pattern almost always points to a failed ridge cap seam, a missing closure strip, or a transition flashing that was never lapped correctly. The field of the roof is the most waterproof part; the terminations are where Houston rain finds its way in.
• Granular feel or chalky residue when you brush the panel face. That’s the painted finish beginning to degrade. On coastal-adjacent or pollution-exposed roofs in Houston, the fluoropolymer coating can chalk faster than the substrate rusts. If caught early, a coated touch-up can buy you several years; ignore it and the Galvalume layer underneath starts oxidizing.
• Screws that have backed out half a turn or more across a whole panel row. This happens when the original installer over-torqued and stripped the threads, or when thermal cycling works loose the ones that were never seated into the purlin properly. A few backed-out screws is a fix, but if the threads are stripped or the purlin is rotted beneath, you’re replacing more than fasteners.

Replacement Cost & What’s Included

For Houston homeowners, most CGI-related repair work lands between $400 and $1,800 installed. A six-to-ten fastener replacement with new washers and touch-up coating sits at the low end. Replacing a damaged section of panel plus new closure strips and butyl tape under the laps runs mid-range. The high end is a ridge cap rebuild with new underlayment at the transition, or pulling up panels to replace rotted decking around a penetration. The chassis of the price is the same whether you call us or anyone else: panel gauge, finish type, the size of the area, and how much of the existing fastening system can be reused. What’s different is that we write the number before any work starts, and it’s the number on the invoice, not the opening bid. Our workmanship is covered by the 365-Day Done Right Promise: if a repair fails inside that window, we come back and fix it at no charge, no service call, no re-inspection fee. And we’ll give you a written guarantee on the repair before we lift a single panel.

DIY or Call Us?

Here’s our honest split. An owner can safely do a visual inspection from the ground or a ladder set well away from the eaves: look for rust streaks, backed-out screws, lifted laps, and chalky film. You can clean leaf buildup from cricket and scupper areas with a hose from the ground. But once you’re talking about climbing onto a metal roof in Houston, pulling panels, re-tensioning clips, or touching fasteners, leave it to a professional. Metal roofing is slick even when dry, the panel edges will open a hand like a can lid, and the difference between a repaired roof and a leaky one is usually a half-turn of torque and the correct butyl tape under the lap, placed in the correct order. If the decking is soft, you’re not walking on it at all. Call (254) 527-5340 and we’ll put a real person on the phone, a written price in your hand, and a background-checked, uniformed technician on the roof.