Skylight installation is a precise process that requires careful planning and expert execution. As your San Francisco roofing contractor, we handle every step from initial consultation to final cleanup.
Step 1: Roof Assessment and Planning
We start by inspecting your attic and roof structure to determine the best location for your skylight. Our team checks for adequate framing, insulation, and roof pitch compatibility. For San Francisco's foggy coastal climate, we recommend low-E glass to reduce heat loss and UV damage.
Step 2: Choosing the Right Skylight
We offer three main types: fixed skylights (starting at $800 installed), vented skylights (starting at $1,200), and tubular skylights (starting at $500). Fixed units are the most common for our residential projects. Vented models are popular for bathrooms and kitchens where you want to release moisture. Tubular skylights work well in tight spaces like hallways or closets.
Step 3: Preparation and Cutting
We protect your interior with drop cloths and plastic sheeting before cutting the roof opening. Our crew carefully removes shingles and underlayment in a 12-inch perimeter around the planned cut. We then install temporary supports to ensure the structure remains stable during the process.
Step 4: Flashing and Waterproofing
This is the most critical step. We use a continuous flashing system that integrates with your existing roofing material. For asphalt shingle roofs, we use step flashing and a rubber boot. For tile roofs, we custom-form copper or aluminum flashing to match the tile profile. All seams are sealed with a high-grade urethane sealant rated for 25 years.
Step 5: Insulation and Interior Finishing
We install a rigid foam insulation curb around the skylight to prevent thermal bridging. A drywall return is built and finished, then painted to match your ceiling. We also install a light shaft if needed, using reflective material to maximize light transmission.
Cost Ranges
- Fixed skylight: $800–$1,500
- Vented skylight: $1,200–$2,000
- Tubular skylight: $500–$900
- Custom sizes or curb modifications: add $200–$600
- Roof repair if existing structure requires reinforcement: $300–$800
Timeframes
Most residential skylight installations take 4–6 hours for a single unit. If we need to reframe the roof opening or repair damaged decking, expect 6–8 hours. We schedule all work within a 2-week window from your signed estimate.
Material Options
We work with Velux, Fakro, and Solatube brands. All our skylights feature tempered, double-pane glass with argon gas fill. For energy efficiency, we recommend models with a U-factor below 0.30 and a Solar Heat Gain Coefficient (SHGC) between 0.25 and 0.40 for San Francisco's mixed climate.
Warranty
Every skylight we install carries a 10-year manufacturer's warranty on the glass and seal, plus a 5-year workmanship warranty from Fixit Roofers. We stand behind our flashing and waterproofing for the full 5 years.
Permits and HOA Approvals
We handle all required building permits for San Francisco. The city requires a permit for any skylight that alters the roof structure. If you're in a historic district or have HOA restrictions, we'll help you submit the necessary documentation. Typical permit fees range from $150 to $400.
Why Choose Fixit Roofers for Skylight Installation
We've been installing skylights in San Francisco since 2002. Our crews are trained specifically in roof-integrated skylight systems, not just window installation. We've seen how fog, rain, and wind affect different roof types, and we adjust our flashing methods accordingly. Every job includes a final water test with a garden hose to confirm the seal is complete.