In most applications, it is safe to remove the forms 48 hours after pouring concrete. This leaves the concrete still slightly malleable for smoothing the sides of the structure. In temperature extremes, it is best to leave the forms on for longer.Know More
Concrete forms consists of lumber pieces and stakes that support freshly poured concrete and keep it in the appropriate shape until it has cured enough to stay in position without extra support. Double-headed nails connect form pieces for easy removal.
When cured at temperatures between 65 and 75 F, most concrete takes around three days to cure completely. Removing the forms after two days leaves just enough give in the concrete to round or otherwise smooth the areas covered by the forms. In colder weather, it takes longer for concrete to cure. If temperatures drop below freezing, the curing concrete needs to be heated to cure properly. In hot or dry weather, concrete cures more quickly and forms need to be removed earlier to allow for proper finishing.
One way to test to see if it is the right time to remove the forms is to press the concrete surface gently in an out-of-the-way location with a finger. If the concrete has a lot of give, leave the forms on longer. If the concrete feels solid but has a slight sponginess, then it is time to take off the forms.Learn more about Building Materials
Remove vinyl flooring from concrete by heating up the flooring with a heat gun to break the adhesive bond and then prying the vinyl surface off with a putty knife. After removal of the flooring, grind off any remaining adhesive using a floor grinder.Full Answer >
According to Family Handyman, you make concrete forms for sidewalks by lining the length of the planned sidewalk with 1 1/2-inch boards along the straight areas of the sidewalk, and flexible hardwood siding along curved portions. To prevent the forms from bulging under the weight of the concrete when it's poured, place stakes at regular intervals along the form's length to provide outside support.Full Answer >
Walking is acceptable on newly formed concrete only after 24 hours have passed since it was poured. Even then, walking on the concrete before 48 hours has passed can still cause scuffing and marks on the surface.Full Answer >
Color existing concrete by cleaning the surface, applying a transparent stain. After 4 hours, inspect the concrete to determine if you need a second coat and applying it. After applying the sealer, allow sufficient time for the sealer to cure before allowing traffic on the surface.Full Answer >