Concrete poured over poorly prepared clay in a city that rains for eight months will crack, and no amount of good finishing hides it. Driveways, patios, walkways, front steps, or a foundation that's spalling — describe the work and we'll match you with a concrete contractor in Portland who spends the time on the base course.
Most residential concrete here is flatwork, and most flatwork failures come from the same three things: inadequate compacted base, no control joints where they belong, and pouring in weather the mix can't handle. A good bid specifies base depth, slab thickness, reinforcement, and joint spacing. If those aren't on the page, you're comparing prices for different products.
Retaining walls on Portland's slopes need drainage behind them and, above a certain height, engineering. Brick and block work here also means chimneys: a great many unreinforced masonry chimneys in this city are past their useful life, and repointing a chimney that should be taken down to the roofline is money spent twice. Ask for an honest assessment before repair.
Hairline cracks in a driveway are normal and can be sealed. A slab that has heaved, sunk at one end, or broken into loose sections is failing at the base and patching it just relocates the problem. Slab jacking can lift a settled section for far less than replacement when the concrete itself is sound — worth asking about before you accept a tear-out quote.
Describe the project once and we match it with vetted local pros who actually do this work — you choose who to hire, or nobody at all.
Much of the eastside sits on heavy clay that swells wet and shrinks dry, which is exactly the cycle that lifts and cracks slabs. Proper crushed-rock base, compacted in lifts, is what isolates the concrete from that movement. It's the invisible half of the job and the first thing a low bidder trims.
Work in the public right-of-way — sidewalk panels, curb cuts, driveway aprons — needs city approval and generally a permit, and Portland holds property owners responsible for the sidewalk fronting their home. Structural work and retaining walls above the threshold go through Portland Permitting & Development. A contractor who regularly works here will handle both without prompting.
Houses from the 1900s through the 1940s in this city commonly sit on concrete with little or no steel in it, and many were never bolted to the mudsill. Crumbling, sandy foundation faces in a basement are a familiar sight. Seismic retrofit — bolting, shear panels, cripple wall bracing — is a specific trade and frequently the more valuable spend compared with a cosmetic patch.
Flatwork commonly runs $10–$18 per square foot for a standard broom-finished pour, with stamped or coloured finishes typically $16–$28. A full driveway replacement on a city lot often totals $8,000–$20,000 including demolition and haul-off. Front steps and small walkways price by the piece and rarely come cheap because of forming labour. Retaining walls vary enormously with height, drainage, and engineering. Removal of the old slab is a real cost — check whether it's in the number you're comparing.
The old driveway had heaved. They dug out and compacted a proper rock base, and explained joint spacing before pouring. Two winters, still flat.
Front steps were crumbling and dangerous. Formed and poured new ones that match the house, and they handled the sidewalk permit themselves.
Our back patio had sunk toward the house. He checked the base and said the slab itself was still sound, so we had it lifted instead of torn out and repoured.
Not well. Rain on fresh concrete ruins the surface, and cold slows the cure. Crews here work through much of the year using covers, blankets, and mix adjustments, but they schedule around forecasts, and a contractor eager to pour into a storm is a poor sign.
Some hairline cracking is normal as concrete cures. Cracks that wander across the slab usually mean control joints were too far apart or cut too late, or the base wasn't compacted. Ask about joint spacing before the pour, not after.
Surface spalling on old unreinforced concrete is common here and often cosmetic, but soft, sandy material you can dig out with a screwdriver isn't. That's a job for someone who does foundation work, and it usually pairs with a conversation about seismic bolting.
Foot traffic is generally fine within a day or two; vehicles typically need seven to ten days, longer in cold weather. Rushing it leaves permanent tyre impressions in a slab you just paid for.
Send dimensions and a photo of what's there now. Portland concrete contractors reply with free bids that spell out base and reinforcement.
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