Replacing a roof is a major home project. From the first inspection to the final permit sign-off, the process spans several weeks and involves multiple decisions. Knowing what to expect at each stage reduces stress and helps you make better decisions along the way.
Stage 1: Getting an Inspection
If your roof is showing signs of age or you've noticed any potential problems, start with a professional inspection before making any decisions. A qualified roofer will:
- Assess the current condition of all roofing materials
- Check flashing at penetrations and edges
- Look for signs of moisture intrusion (from the attic and exterior)
- Give you an honest opinion on remaining useful life
- Recommend repair or replacement based on actual findings
A reputable contractor provides this inspection free or at low cost and doesn't pressure you toward replacement if repairs are adequate.
Timeline: 1-3 days to schedule, 1-2 hours for the inspection, written report within a day or two.
Stage 2: Getting Bids
Once you've decided replacement is appropriate, get at least three written, itemized bids. The bid process requires scheduling each contractor for a site visit to accurately measure the roof and assess complexity.
What each bid should include:
- Exact product name and specifications
- Number of squares (100 sq ft units) to be installed
- Underlayment type
- Whether all flashing will be replaced
- How deck repairs are priced if found
- Permit handling
- Warranty coverage
- Payment schedule
Comparing bids: Make sure you're comparing equivalent scopes. A lower bid that uses felt underlayment instead of synthetic, or reuses old flashing, is a different product — not a better deal.
Timeline: Allow 1-2 weeks to collect bids. Don't rush this phase.
Stage 3: Contract and Scheduling
Once you've selected a contractor, you'll sign a written contract and establish a project schedule. Your contractor handles:
- Pulling the building permit (typically takes 3-10 business days)
- Ordering materials for delivery 1-2 days before installation
- Scheduling crew and dumpster
What you need to do before the start date:
- Clear your attic of anything fragile — nail guns create vibration throughout the structure
- Move vehicles out of the driveway
- Plan for 1-4 days of significant noise
- Notify neighbors about the upcoming project
- Secure pets indoors
Stage 4: Materials Delivery
Typically 1-2 days before installation begins, a pallet delivery arrives with shingles, underlayment, ridge cap, drip edge, and flashing materials. Verify that the brand and product line match your contract specifications before you sign for delivery.
Stage 5: Tear-Off Day
The installation typically begins with tear-off — removing the existing roofing down to the deck. This is the noisiest phase. It usually takes one day for most residential roofs.
What happens:
- Dumpster or trailer staged for debris
- Tarps at perimeter to protect landscaping
- Existing shingles, underlayment, and sometimes flashing stripped
- Deck inspection performed — contractor documents any rot or damage found
If deck damage is found, the contractor should show you what's there and get approval on additional work before proceeding.
Stage 6: Installation
Once the deck is repaired and ready:
- New underlayment installed across the entire deck
- Drip edge and metal flashing installed
- Shingles or tile installed from eave to ridge
- Ridge caps and finishing details completed
For a typical 2,000 sq ft home with architectural shingles, installation takes 1-2 days. Tile is slower — plan 3-5 days.
Stage 7: Cleanup and Inspection
Contractor cleanup includes:
- Removal of all old roofing debris
- Dumpster hauled away
- Magnetic roller sweep for nails around the entire property
Your walkthrough:
- Walk the perimeter and check for missed debris or nails
- Visually inspect from the ground — aligned shingles, clean ridge cap, tight flashing
- Check the attic for any daylight or staining
Building inspection:
- The building inspector reviews the completed work as part of the permit process
- You receive permit sign-off documentation
Stage 8: Documentation and Warranty
After completion, your contractor should provide:
- Signed permit and inspection documentation
- Manufacturer warranty registration confirmation (in your name)
- Workmanship warranty in writing
- Maintenance recommendations for the new system
Keep all of this documentation. The manufacturer warranty transfers to new owners if you sell — and buyers ask for it.
Typical Timeline: Start to Finish
| Stage | Typical Duration |
|---|---|
| Inspection | 1-3 days |
| Collecting bids | 1-2 weeks |
| Contract, permit, scheduling | 1-3 weeks |
| Materials delivery | Day before start |
| Tear-off | Day 1 |
| Installation | Days 1-3 |
| Cleanup and inspection | Final day |
| Total elapsed time | 4-8 weeks |
The permit process is often the longest variable. Expedited permits are sometimes available at additional cost.
Service Areas
Peak Builders & Roofers of San Diego serves homeowners throughout the county, including San Diego, Chula Vista, El Cajon, La Mesa, Santee, Lakeside, Spring Valley, Lemon Grove, National City, and surrounding areas.
Start the Process Today
Call (619) 330-8185 or visit our contact page to schedule your free inspection. We'll walk you through every stage from first look to final permit. GAF Master Elite certified, C-39 licensed, serving San Diego County since 1999.
