Metal roofing is a smart choice for Vancouver homes and buildings. It stands up well to long rain seasons, sheds snow, and lasts a very long time with the right care. If you are curious about the process, this step by step guide walks you through the main stages from prep to final check. It is a clear look at how pros approach the work so you know what to expect and how to plan.
Important note
Roof installation is risky work. Always use trained installers with proper safety gear and permits. If you want a fast inspection and a clear plan, book our team through roofing inspections or learn more about local options on metal roofing in Vancouver.
Step 1: Plan the project and schedule a weather window
Start with a full review of the roof. Measure the roof planes and note ridges, hips, valleys, and any vents, chimneys, or skylights. Confirm the type of panel you want and the trim parts needed for edges and transitions. Check local rules and strata rules if they apply. Choose a stretch of dry weather so the deck stays dry during the work. Good planning keeps costs in line and avoids delays.
Step 2: Set up safety and site protection
Before any tear off or deck work, set fall protection, ladders, and roof anchors. Protect gardens, siding, and windows with tarps. Place disposal bins and set a clear path for moving panels and trim. Inside the house, cover attic openings to keep dust out. A clean and safe site helps the job run smoothly and protects your property.
Step 3: Remove old roofing or prepare for an overlay
Many projects remove old shingles to expose the deck. This allows a full check of the wood and fasteners and gives the flattest base for panels. In some cases a metal roof can go over a single layer of shingles after adding the right underlayment and spacing. Your estimator will help you choose the best method for your home, budget, and code needs.
Step 4: Inspect and repair the roof deck
Look for soft spots, rot, or loose sheathing. Replace damaged boards and secure the deck with proper fasteners. A flat and solid deck is the base of a long lasting metal roof. This step also includes checking attic vents and baffles so the roof can breathe and manage moisture.
Step 5: Install ice and water protection in key areas
Apply self sealing membrane along eaves, valleys, around chimneys, skylights, and any wall meets roof areas. In our wet climate these are the first lines of defense against wind driven rain. Press the membrane tight so there are no gaps or fish mouths. Roll it so it bonds well to the deck.
Step 6: Lay the main underlayment
Cover the rest of the deck with a high quality synthetic underlayment unless the panel system you chose calls for a different base. Overlap courses as the maker says and keep them straight. Fasten as directed and keep the surface smooth so panels sit flat. Underlayment is your backup shield if water ever gets past the metal.
Step 7: Fit the drip edge and eave trim
Install metal drip edge or eave trim along the lower edges. It directs water into the gutters and protects the deck edges. Overlap sections as required and fasten on the schedule set by the maker. The fit should be tight and straight because panels will key off these lines.
Step 8: Set rake trim along the gable edges
Rake trim closes the edges at the sides of the roof and gives a clean look. It also stops wind driven rain from getting under the panel edges. Pre bend ends where needed so seams are neat. Keep reveals even and fasten per the guide for your panel system.
Step 9: Plan panel layout and pre cut
Measure each roof plane to plan the panel layout. You want even coverage and clean lines at both sides. Pre cut panels to length with the tools the maker allows. Keep cuts smooth and remove any shards so the finish is not scratched. Stage panels where they are easy to lift to the roof.
Step 10: Place the first panel and square the run
Snap a chalk line at the start edge. Place the first panel so it is square to the eave and rake trim. Take your time here because the first piece sets the line for the rest of the roof. Confirm overhang at the eave and along the side trim is consistent with the guide for your system.
Step 11: Fasten panels the right way
Follow the maker guide for fastener type and spacing. For exposed fastener panels, set screws in the flats or ribs as specified and do not over tighten. For standing seam systems, lock the seams as required and use the correct clips and fasteners. Keep rows straight and check alignment as you go. Replace any fastener that spins or misses the deck.
Step 12: Overlap and seal panels
Where panels meet, follow the required overlaps. Use closure strips where the profile meets trim or ridge parts so wind and pests cannot enter. Apply sealant only where the guide calls for it and keep beads neat and continuous. Wipe away extra sealant so the finish looks clean.
Step 13: Flash every penetration
Chimneys, vents, pipes, and skylights need tight flashing. Slide the upper parts under the underlayment where needed and lap the lower parts over the metal so water always runs to the outside. Use closure foam or Z trim to close panel ribs at walls and ridges. Good flashing is the difference between a dry attic and a costly leak, so slow down and get this perfect.
Step 14: Install valley metal
For roofs with valleys, install wide valley pans centered in the valley line. Set underlayment and membrane under the valley first, then lay the valley metal with the proper cleats or fasteners. Keep panel edges away from the center line of the valley as the maker requires, and seal as directed. Valleys carry a lot of water during Vancouver storms, so this step is critical.
Step 15: Add ridge vent and ridge cap
If the roof uses ridge vent, place the vent material along the ridge, then install ridge cap sections with the required overlaps. Use closure strips made for your panel profile so wind driven rain cannot blow under the cap. Keep the cap straight from end to end for a clean look.
Step 16: Finish details and transitions
Complete hip caps, sidewall and headwall flashings, end caps, and any special trims. Check for sharp edges and burrs and smooth them so they will not catch leaves or trap water. Confirm gutters and downspouts are clear and well aligned with the new drip edge.
Step 17: Clean up and protect the finish
Brush off metal filings and vacuum gutters so they do not stain the finish later. Remove plastic film from panels if present. Walk the roof and remove any stray fasteners or cutoffs. On the ground, clean all work areas and haul away debris. A tidy close out makes it easier to spot any final touch ups.
Step 18: Final inspection and documentation
Do a slow walk around with a checklist. Confirm panel alignment, fastener rows, trim overlaps, and all flashings. Inside the attic, look for daylight where it should not be and confirm vents are open and clear. Take photos and record part numbers for your warranty file. Set your first seasonal check on the calendar so you stay ahead of wear and tear.
Care tips for a long lasting metal roof in Vancouver
Metal roofing does not need a lot of care, but a little attention goes a long way in a rainy climate.
- Rinse the roof and gutters a few times a year to remove grit and leaves
- Trim branches that touch the roof
- After major storms, schedule quick roof maintenance to spot loose fasteners or minor sealant issues
- If you ever see a stain on a ceiling, book fast roofing inspections so a small issue does not become a costly repair
Final Thoughts
Metal roof installation is a precise process that rewards careful planning and exact work. From a strong deck and clean underlayment to straight panels, sealed flashings, and a tight ridge, every step matters. With trained installers and the right parts, your roof will handle Vancouver rain and wind for many years.
Contact us to schedule an inspection or request a clear estimate for your metal roof project.
