Core Services
- Roof inspection
- Roof repair
Questions and Answers
What are the signs of roof deck rot I should look for in La Puente?
Common signs in our area include sagging roof lines, dark stains or streaks on your ceilings inside the home, a musty odor in the attic, and spongy or soft spots you can feel when walking on the roof. Moss growth often traps moisture against the decking, accelerating rot. If you notice any of these, it's crucial to have a professional inspection to assess the structural integrity before minor damage becomes a major repair.
Can you prevent moss from growing back on my roof after a cleaning?
Absolutely. While cleaning removes existing moss, prevention is key in La Puente's climate. After a professional cleaning, we can install zinc or copper strips along the roof ridge. When it rains, trace amounts of metal wash down the roof, creating an environment that inhibits moss and algae growth for years. We also ensure proper trimming of overhanging tree branches to reduce shade and moisture retention on your roof.
If I have roof deck rot, do I always need a full roof replacement?
Not always. It depends on the extent of the damage. Our first step is a detailed inspection from the attic and the roof exterior. If the rot is localized—often around chimneys, valleys, or where moss was thickest—we can perform a targeted roof repair by replacing the affected decking and shingles. However, if the damage is widespread or the decking is structurally compromised, a full replacement is the safest, most cost-effective long-term solution for your home.
Company Background
CM Roofing is a trusted, locally-owned roofing company serving La Puente, CA, and the surrounding areas. We specialize in addressing the specific challenges homeowners in our community face, including roof deck rot and persistent moss growth caused by our unique local climate. Our team provides thorough inspections to identify moisture damage and weakened structures, followed by precise repairs or full replacements using durable, high-quality materials. We don't just fix the visible problem; we implement solutions like improved ventilation and moss-resistant treatments to prevent future issues, ensuring your roof is strong, secure, and built to last.
Business Location & Hours
| Mon: | 7:00 AM - 5:00 PM |
| Tue: | 7:00 AM - 5:00 PM |
| Wed: | 7:00 AM - 5:00 PM |
| Thu: | 7:00 AM - 5:00 PM |
| Fri: | 7:00 AM - 5:00 PM |
| Sat: | 7:00 AM - 5:00 PM |
| Sun: | Closed |





