Commented: XPS TapingI looked for the orange stuff seen on H@H and could not find it at the local Lowes. So I settled on using a 10 year duct tape (it holds the universe together after all!) that is rated for external use...
Commented: XPS around drain pipes?You might want to add some low expansion polyurethane foam in any gaps.
Notes:
- get the LOW expansion stuff. You don't want to break the pipes when it expands
- try get the stuff that stays flexible