Service
Flat & Low-Slope Roofing. TPO, torch-down, and modified bitumen.
Single-ply TPO, modified bitumen, and torch-down systems for flat sections, balconies, and modern architecture.
Overview
Flat & Low-Slope Roofing in Woodland Hills & Los Angeles.
Flat and low-slope roofs are the part of every LA home that gets neglected - a modern home's clerestory section, the section above the garage, a hidden balcony deck, a small commercial building. They're also where the worst leaks live, because flat roofs have nowhere for water to go if the membrane isn't perfect.
RAA installs and repairs three flat-roof systems: TPO (single-ply white membrane, energy-efficient and the most common modern choice), modified bitumen (cold-applied, no torch, good for occupied buildings), and torch-down APP/SBS (proven, robust, requires fire-watch protocol). For each, we detail the parapets, scuppers, drains, and penetrations exactly to manufacturer spec.
We work on residential modernist roofs across the Hollywood Hills, Encino flats, and Sherman Oaks, plus small commercial flat roofs along Ventura Blvd in Woodland Hills, Tarzana, and Sherman Oaks. Every install includes a manufacturer-registered warranty and proper drain testing before sign-off.
What's Included
A complete scope, priced up front.
- TPO single-ply installation
- Modified bitumen (cold-applied)
- Torch-down APP/SBS systems
- Parapet wall flashing detail
- Scupper, drain, & overflow detail
- Penetration boot replacement
- Cool-roof reflective membrane (Title 24)
- Drain testing before sign-off
Service Area
flat & low-slope roofing across the LA area.
Based in Woodland Hills, we handle flat & low-slope roofing projects across Woodland Hills, Tarzana, Encino, Sherman Oaks, Calabasas, Agoura Hills, Thousand Oaks, Simi Valley, Ventura County, Pasadena, Santa Monica, San Fernando Valley, and Greater Los Angeles. Every project is permitted, insured, and backed by a one-year workmanship warranty.
FAQ
Flat & Low-Slope Roofing - frequently asked questions.
- Which flat-roof system is best for my home?
- TPO is the most common modern choice - bright white, energy-efficient, 20-25 year warranty, no fire risk during install. Modified bitumen is similar life but better in retrofit situations where you can't get clean sub-deck. Torch-down is still common on commercial but slowly being phased out residentially.
- How long does a TPO roof last?
- 20-30 years with the heavier mil membranes (60 mil and up), assuming the flashings and penetrations are detailed correctly. Most failures are at the details, not the field membrane.
- Is a flat roof actually flat?
- No - it should slope at minimum 1/4 inch per foot toward drains. If yours doesn't, we add tapered ISO insulation to build positive slope before the new membrane goes on. Pooling water is the number-one killer of flat roofs.
- Do you do commercial flat roofs?
- Yes - small commercial properties (under ~10,000 sq ft) along Ventura Blvd, Reseda, and the West Valley. Larger industrial work isn't our specialty.
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Ready to start your project?
Free on-site consultation. Honest timelines. Fixed-price proposals. Most estimates returned within 72 hours.