Pouring in extreme heat
Fresno summers are extremely hot; National Weather Service records show 69 days at or above 100°F in 2021. Extreme heat is the biggest challenge for concrete work here. Hot concrete sets fast, giving finishers less time; the surface dries quickly and can crack; and high temperatures can reduce long-term strength if the slab isn't cured properly. Good contractors pour very early in the morning, cool or dampen the base, adjust the mix, use shade and windbreaks, and cure carefully with curing compound, wet curing or covers. Ask your contractor how they'll handle the heat on your pour date.
Cool surfaces
Concrete patios and pool decks get hot in Fresno sun. Lighter colors and some decorative finishes stay cooler underfoot than dark surfaces. If you're choosing stamped or colored concrete for a pool deck, ask about light colors and slip-resistant sealers.
Rare freezes
NOAA's engineering weather data records only about 10 freeze-thaw cycles in an average Fresno year, so freeze-thaw damage is less of a concern than in colder places. Heat, curing and soil moisture matter more.
Irrigation and soil
Heavily irrigated yards can soften the soil under slab edges. Aim sprinklers away from concrete and fix leaks. Patios should slope away from the house, and driveways toward the street.
Dust control
Fresno County is part of the San Joaquin Valley area the EPA has classified as not meeting federal fine-particle standards. Demolition and saw-cutting produce dust, including silica dust. Ask how the contractor will control it, such as wet cutting and vacuum attachments.
Driveway approaches
Replacing the approach where a driveway meets the street usually needs a permit from the City of Fresno or Fresno County.
Before you hire
Ask Fresno concrete contractors how they'll handle hot-weather pours and curing, how they'll prepare the base, how they'll slope slabs, how they'll control dust, and whether permits are needed. Look up the contractor's California license with the CSLB.
Pool decks
Pool decks are common in Fresno, and they combine heat, water and bare feet. Choose a light color and a textured or slip-resistant finish, slope the deck away from the pool and the house, and seal it with a product suited to pool areas. Joints around the pool coping need flexible sealant so the deck and pool can move independently.
Cracks and repair
Small cracks can be sealed to keep water and dirt out. Sections that have sunk toward the house should be lifted or replaced to restore drainage. Surface damage on an otherwise sound slab can sometimes be resurfaced.
Roots
Large shade trees lift slabs. When replacing concrete near trees, avoid cutting major roots without advice from an arborist, and consider rerouting walks or using root barriers.
Utilities
Call 811 before excavation, and point out private lines such as irrigation and pool plumbing, which 811 doesn't mark.