Do I need a permit for roof replacement in
Camas, Washington?

Camas roof replacement permits — the key details

IRC R907.4 is the rule that governs reroofing in Camas, and it says: if there are already two layers of roofing on the deck, you must tear off both layers before installing new material. The City of Camas Building Department requires you to declare the number of existing layers on the permit application, and the inspector verifies this at the first in-progress inspection (when the old roof is partially removed). If the inspector finds three layers and you only declared two, the permit is rejected, work stops, and you must tear off to the deck. The reason for this rule is deck load — asphalt shingles weigh 2–3 pounds per square foot, and stacking three layers exceeds typical residential framing capacity and creates ice-dam traps in Camas's wet climate. This is not optional; it's not a gray area. Get the number of layers right on day one by either having a roofer inspect the eaves (where layers are visible) or by probing a small section yourself.

Underlayment and ice-and-water-shield specifications are the second major compliance point, and they vary by roof slope and location. Per IRC R905, Camas roofs (especially west of the Cascades, in the higher-rainfall zone) must have a self-adhering underlayment or at minimum 30-pound felt, installed with proper lap and fastening. Ice-and-water-shield (rubberized asphalt membrane) must extend from the eave up to 24 inches inside the building line if there is any risk of ice damming — and in Camas's climate, the city assumes ice damming risk everywhere below 3,000 feet elevation. Many unpermitted re-roofs skip this step or use a generic felt that doesn't meet the IRC standard, and the city's inspector checks it at final inspection by probing the eaves. You can use synthetic underlayment (Titanium UDL90, Grace Heaply, or equivalent), felt, or rubberized membrane — just specify it clearly on the permit application. The contractor should provide a product cut sheet with the permit; the city's portal often requires it as a pdf upload.

Material changes (shingles to metal, composition to slate or tile) trigger a structural review in Camas because tile and slate are 2–3 times heavier than asphalt shingles. If you're upgrading from 3-tab shingles (approximately 2.5 psf) to metal standing seam (approximately 1.5 psf), the city may waive the structural evaluation with a note from the roofer. But if you're moving to concrete tile (approximately 10–12 psf) or slate, the city building department will require a signed structural calculation from a PE (Professional Engineer) confirming that the existing roof framing, connections, and wall support can handle the additional load. This adds $800–$2,000 in design fees and 2–3 weeks to the approval timeline. It's not a barrier, but it's a cost and schedule item that many homeowners don't anticipate.

Camas Building Department's online permit portal is accessed through the city's website and allows you to upload permit applications, spec sheets, and photos 24/7. The typical review turnaround for a straightforward like-for-like re-roof is 3–5 business days; complex permits (material changes, structural questions) take 2–3 weeks. You can resubmit corrected applications directly in the portal without re-paying the permit fee if the first submission was rejected for missing underlayment specs or fastening details. This is faster than re-submitting in person at City Hall. The portal also shows inspection scheduling — once approved, you can book the deck-inspection appointment (when old roof is off) and the final inspection (when new roof is complete and all fasteners and flashing are visible) directly in the system.

Roofing contractors in Camas are responsible for pulling permits in almost all cases, and the city requires them to provide proof of licensure (Washington State Department of Labor roofing endorsement, typically # 3400 series). Owner-builder permits are allowed if you own the home and occupy it, but you must obtain and pass the roofing exam (IBC R101.2 and the city's owner-builder rules) or hire a licensed roofer to do the work under your permit. If you're financing or refinancing the re-roof, the lender will require a permit and proof of inspection — so skipping the permit doesn't save money; it only delays or blocks the loan. The permit fee in Camas is typically $150–$400 depending on roof area (often calculated at approximately 1–2% of project valuation or a flat fee per square of roof), so a 2,000-square-foot roof (approximately 20 squares) costs approximately $200–$350 in permit fees.

Three Camas roof replacement scenarios

Camas's maritime climate and underlayment strategy

Camas west of the Cascades receives 50+ inches of rain annually and sits in IECC Climate Zone 4C, with winter temperatures oscillating around freezing. This creates ice-dam and condensation risks that directly drive the City of Camas Building Department's underlayment enforcement. IRC R905 specifies underlayment requirements, but Camas's code interpretation is stricter than some neighboring jurisdictions: the city requires ice-and-water-shield (rubberized asphalt membrane, approximately 1/16-inch thick) to extend 24 inches up from the eave line on all roofs in the standard elevation range. This is not optional in Camas even on low-slope roofs, because ice damming is common in the region during February–March thaws. Additionally, under metal roofing, Camas requires a breathable synthetic underlayment or 30-pound felt (not tar or bituthane) to prevent condensation buildup in the cavity between the metal and the deck — a critical detail because metal is an excellent thermal conductor and condensation in a non-vented cavity can rot the sheathing within 5–10 years.

The most common mistake on Camas permits is specifying underlayment as 'standard felt' without a product name or rating. The city's inspector will reject this at review because 'standard' could be 15-pound tar paper (not acceptable under IRC R905.2) or unrated roofing felt. Instead, specify '30-pound asphalt-saturated felt per ASTM D226' or 'Grace Ice & Water Shield XL' or 'Titanium Synthetic Underlayment UDL90.' Include a one-page product data sheet with the permit application PDF. On west-slope Camas roofs, the city also looks for proper lap (6-inch minimum on felt, per manufacturer specs on synthetic) and fastening (nails or staples at 12-inch intervals on felt, depending on wind zone). The deck inspection phase is where the city verifies this: the inspector will walk the deck after the old shingles are removed and check that the underlayment is installed correctly and adhered fully. If underlayment is missing or improperly installed, the city will issue a correction notice and require reinstallation before the new shingles go on. This is not a final sign-off issue; it's a mid-process hold that adds 2–3 days to the timeline.

Three-layer detection and the permit-intake bottleneck in Camas

The City of Camas Building Department's online permit portal includes an intake questionnaire that asks: 'How many existing layers of roofing are currently on the structure?' This question is not casual. IRC R907.4 prohibits applying new roofing over two or more existing layers without removing the old layers to the deck. If the inspector later finds three layers and you declared two, the permit is voided, work is stopped, and you must re-pull the permit after tear-off is complete. To avoid this, many homeowners and contractors will probe the eaves (usually under a soffit) or have a roofer inspect for free before submitting the permit. A probe through the overhang edge reveals the layer count clearly. If you're unsure, estimate conservatively (e.g., if you see two layers in the probe, declare two in the application; if you see three, declare three and plan on tear-off). The intake staff will then require you to revise the scope to full tear-off, which usually delays approval by 3–5 days but prevents a stop-work order later.

Once the permit is approved, the deck inspection is your protection. When the roofing contractor has removed the old layers down to the deck, the city inspector comes out (you schedule this in the online portal, typically within 3–5 business days of your request). The inspector checks three things: (1) actual layer count matches the permit declaration, (2) deck is sound (no rot, no ply separation, no protruding fasteners), and (3) proper underlayment is installed before new shingles go on. If the deck is rotten in spots, the city will issue a correction notice requiring the contractor to replace the sheathing in those areas — this is a structural safety issue and is non-negotiable. Rot repairs typically add $1,500–$4,000 depending on extent, so planning for a deck inspection when the roof is off is critical. Many homeowners skip the permit to avoid this inspection cost, not realizing that a rotten deck left under new shingles will fail within 5–10 years and cost far more to repair later.

Common questions