They often go hand-in-hand, depending on the extent of the damage. If your roof deck was compromised by the impact of a heavy branch or tree, we'll install a plywood board over the gap before securing a tarp across the roof. Board up is required whenever there is damage that reduces the structural integrity of your house until permanent repairs can be made. Roof tarping, on its own, is only meant to keep out rain or other weather from causing more damage. We'll know the best course of action when we get to your place for the free inspection.