Find answers to the most common questions about building materials & hardware.
Clean the crack, fill with concrete patching compound, and smooth with a trowel. Seal afterward to prevent moisture.
Often yes—especially for structural changes. Reputable installers typically pull permits for you.
Drill with a masonry bit, insert wall anchors, and secure with heavy-duty screws.
It hardens in 24–48 hours but reaches full strength after 28 days. Keep it damp for the first week.
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