Therma-Tru Impact Garage Doors Nationwide | Meridian Windows & Doors

Therma-Tru Impact Garage Doors: The Los Angeles Owner’s Guide

We stock and install Therma-Tru-compatible impact garage doors throughout Los Angeles, with most complete door replacements running between $2,800 and $6,500 installed depending on size, wind-load rating, and finish. Most single-door swaps are done in one day once the door arrives from our supplier or is pulled from local inventory. What typically brings an LA homeowner to this page: the door still opens, but it struggles to close on hot afternoons, the impact glass or panel shows a crack from a rock kicked up on the 405, or the track has started grinding after years of coastal air and canyon dust.

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Which Therma-Tru Models This Applies To

Therma-Tru’s impact-rated garage door lines vary by year and wind zone, and Los Angeles spans multiple wind zones depending on whether you’re in Sherman Oaks, San Pedro, or up in Porter Ranch. The two things that matter when matching a door or panel: the wind-load label on the inside edge of the door frame (typically a small metal tag reading “FL” followed by a number, indicating Florida Building Code rating, or a California-specific “DAS” marking), and the exact rough opening measurement, which in pre-1990 LA homes is often a half-inch off from today’s standard sizes. If you have an older Therma-Tru door with custom dimensions, we measure on site before ordering anything. On the OEM-versus-aftermarket question: Therma-Tru OEM panels guarantee exact color match and identical impact certification, but several aftermarket manufacturers make compatible panels at 20 to 30 percent less, with the tradeoff being that the impact rating must be verified against the existing frame’s rating. We’ll tell you which makes sense for your door, and the answer is not always OEM.

Meridian Windows & Doors is an independent service provider. We are not affiliated with Therma-Tru, and we do not represent ourselves as a factory service center. We carry and install their products alongside PGT, CGI, CWS, and other impact-rated lines, which means we can be honest when a Therma-Tru product is and is not the best fit for a specific Los Angeles home.

Signs Your Therma-Tru Impact Garage Door Is Failing

• The door rubs or catches on one side during travel. This usually means the rollers or hinges are wearing unevenly, or the track has shifted out of alignment after years of thermal expansion and contraction. Left alone, it starts straining the opener motor.
• Visible cracks or delamination on an impact panel. Impact-rated panels are laminated, not solid. A crack may not compromise the wind rating immediately, but moisture gets between the layers and the panel can separate within one rainy season. In Los Angeles, one good atmospheric river winter is enough to finish the job.
• The door sags when halfway open. This is a spring-tension issue, not a panel issue. An impact door is heavy, often 200 to 400 pounds, and the spring is doing most of the lifting work. A door that sags mid-travel means the spring has lost tension or is nearing failure.
• Grinding or popping sounds from the track area. Coastal air in neighborhoods like Mar Vista and Playa del Rey accelerates corrosion on steel rollers and hinges. The popping is usually a roller seizing up, and the grinding is metal-on-metal contact where a bearing has failed.
• The door no longer seals evenly against the floor or the side jambs. This is often a symptom of the door panels themselves warping under direct afternoon sun, especially on west-facing garage doors in the San Fernando Valley where ambient heat plus direct exposure breaks down the internal adhesive bond faster than in coastal zones.

Replacement Cost & What’s Included

A full Therma-Tru impact garage door replacement in Los Angeles generally runs:

• Single-car door, standard wind rating: $2,800 – $3,800 installed
• Double-car door, standard wind rating: $3,800 – $5,200 installed
• Double-car door, high wind-load or custom finish: $5,000 – $6,500 installed
• Single panel replacement only: $450 – $1,000 installed, depending on size, color match, and impact rating
• Spring/roller/hinge replacement (hardware only): $180 – $450 installed

Every quoted price is a written, line-item number delivered before any work starts. The price on paper is the price you pay at the door. Labor and parts are covered under our 365-Day Done Right Promise, and if a door we install fails within that year, we come back at no charge. We do not run change orders, and we do not come back asking for more because a part was “unexpected.”

DIY or Call Us?

What you can safely do yourself: check the photo-eye sensors for alignment, clean the track with a dry rag, and test whether the door operates smoothly by running it up and down with the opener disengaged. What you should not do yourself: touch the torsion spring, the cables, or any tension-borne hardware. These parts are under enough load to cause serious injury or death if they release. We carry replacement springs, rollers, hinges, and cables on our trucks specifically because we do not want a Los Angeles homeowner standing on a ladder with a pair of vise grips trying to save $200. The same caution applies to removing a cracked impact panel. These doors are heavier than standard doors, and if the panel comes off the track with the spring still under tension, the whole assembly can drop. If the door is making noise, sagging, or cracked through the panel, call us at (817) 686-2228 and we’ll come look at it before you’ve finished reading the forum posts.

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