Roof Replacement in Columbia County
A full tear-off in Columbia County, Oregon — down to the bare deck, rotted sheathing replaced, and finished in Owens Corning Oakridge Desert Tan.
📞 (503) 203-1483A full tear-off roof replacement on a 2,000–2,500 sq ft home in Columbia County, Oregon. The old roofing came off down to the bare deck, the bad decking underneath was cut out and replaced, and it was shingled with Owens Corning Oakridge in Desert Tan.
Two days on site with a full crew: one day to strip and repair, and one day to complete the installation and clean up.
- Scope
- Complete tear-off and replacement
- Shingle
- Owens Corning Oakridge architectural asphalt — Desert Tan
- Underlayment
- Owens Corning ProArmor synthetic; self-adhered membrane at the eaves
- Roof area
- Approx. 2,000–2,500 sq ft
- Time on site
- 2 days
- Project cost
- $10,000 – $15,000
Tear-off — what the old roof was hiding
Once the old roofing came off we could see what we were actually working with. A section of the deck had delaminated sheathing, and the board under it was split and rotted through. Soft decking like that gets cut back to solid framing and replaced. New plywood was cut in and nailed off to the framing, flush with the existing deck, and the shingle bundles were loaded onto the roof at that point so the crew was not running the ladder all day once the shingles started going on.
Dried in before shingles installation
Self-adhered membrane runs wide along the eave and valleys — the dark band at the bottom edge — with ProArmor synthetic underlayment lapped up the field and capped over the ridge, and metal drip edge on at the eave and rake. Once a roof is at this stage the house is watertight.
Shingles, flashing and venting
The Oakridge is an architectural laminate, so it carries a dimensional shadow line instead of the flat look of a 3-tab. Caps are nailed above the sealant line so every fastener ends up covered by the next course. The skylight curb was re-flashed and shingled back in, with the flashing woven into the courses rather than caulked around old metal. The pipe jack got a new boot and base, a new roof vent was set into the field, and the metal flue got a new base flashing and storm collar. Every penetration on this roof got new flashing.
Finished result
With intake at the eaves and exhaust up top, the attic can move air the way it is supposed to, which is what keeps the shingles from cooking from the underside and shortening the life of the roof. Tear-off debris was hauled off, the ground and gutters were cleared, and the whole perimeter was swept with a magnet for nails before the crew pulled off site.
Planning a roof replacement in Columbia County or the Portland metro? Request a free written estimate from a licensed Oregon contractor, CCB #238525.