Find answers to the most common questions about building materials & hardware.
Control joints: Cut grooves every 4–6 feet. Proper curing: Keep moist for 7 days. Reinforce with wire mesh/rebar for large slabs.
24-48 hours to set, 7 days for partial strength, 28 days for full cure. Keep it moist for best results.
Cracks happen from rapid drying (cure with plastic sheeting), poor base prep, or too much water in the mix.
Yes, if they’re "insert" replacements (same frame size). New construction windows require professional skills.
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