Concrete that handles freeze-thaw and road salt
Concrete in Thunder Bay lives a hard life. Water gets into the surface, freezes,
expands and flakes the top layer off, a problem called scaling. Salt and de-icers
make it worse. The way to avoid it is not a secret, but it has to be done
correctly on the first pour.
What good concrete work includes
- A proper base. Compacted granular base, sized for the job, so the slab does not settle or heave unevenly.
- The right mix. Air-entrained concrete for exterior work lets tiny pockets absorb freeze-thaw pressure. Ask for it by name.
- Thickness and reinforcement. Driveways that take vehicles are poured thicker than a walkway, and reinforced with mesh or fibre.
- Control joints. Planned cuts so the concrete cracks where you want it to, rather than anywhere it likes.
- Slope and drainage. Water has to run away from the house and not pool on the surface.
- Proper curing and sealing. Concrete poured late in the season may need extra care, and a sealer protects the surface from salt.
Projects
- Driveways. New, replacement, or widening, with tear-out and disposal of old slab priced separately.
- Walkways and steps. Entrances, side paths and landings, where slope and railing rules apply.
- Patios and pads. Backyard living areas, shed bases, hot tub pads, and garage floors.
- Finishes. Broom finish is the standard for grip in winter. Stamped and exposed-aggregate finishes cost more and need careful sealing.
Timing and the pouring season
Concrete is generally poured from late spring to early fall. Cold nights can
ruin a pour, so a good contractor watches the forecast and sets the date
accordingly. If you want a driveway done before summer, book in the winter.
See the renovation cost guide for ballpark
ranges, or call (807) 697-7799.