What are cardboard form tubes used for?
Round form tubes, often made of heavy wax‑coated cardboard, create cylindrical footings, piers, and columns. Builders use them to form foundations for decks, porch posts, and fences. The forms are cut to length, placed in excavated holes, and then filled with concrete. Once the concrete cures, the cardboard is removed or allowed to decompose.
What diameters and lengths are available?
Supply Ontime stocks tube forms in diameters ranging from 8 inches up to 24 inches. Standard lengths are 4 feet, but they can be cut on-site to the desired height. Larger diameters provide greater bearing capacity for patio covers, light posts, and small retaining walls common in Los Angeles landscaping.
Can Sonotube forms withstand Los Angeles’s hot, dry summers without losing shape or strength?
Yes. Supply Ontime’s Sonotube forms are engineered to perform reliably in the intense heat common to inland Los Angeles and the Valley. The outer moisture-barrier coating resists softening under direct sunlight, and the multi-layer fiber construction holds its rigidity even during extended pours in 90-degree weather. Contractors across Southern California favor Sonotube because it stays stable, peels cleanly after curing, and maintains a perfect cylindrical shape, even when jobsite temperatures fluctuate between cool coastal mornings and high afternoon heat.
Does Supply Ontime deliver concrete form tubes to job sites?
Yes. Form tubes are lightweight but bulky. Supply Ontime delivers them by truck within hours or on a scheduled 2‑hour window. For multi‑story buildings or downtown projects, indicate elevator access or staging areas so delivery teams can efficiently place the forms near your work area.