Step 1 Measure Your Space
First, you’ll need to figure out how many linear feet of baseboard moulding you’ll need. Measure each wall twice and then round up your number to the nearest whole number that is divisible by 2 to account for any extra that you’ll need. Some baseboard comes pre-painted. If yours doesn’t, you’ll need to prime and paint it. Either way, you’ll need to let it rest in the space for 72 hours to let it acclimate before you attach it.