Stacking Resistance

[Eternal54]

Does resistance stack? For example, does the the Storm Scourge Paragon Path grants you lightning resistance of half your lvl + cha mod. While Storm Soverigh grants lightning resistance equal to 15+half your lvl.

 

[MatthewJHanson]

Nope.

Not Cumulative: Resistances against the same damage type are not cumulative. Only the highest resistance applies. For example, if you have resist 5 cold and then gain resist 10 cold, you have resist 10 cold, not resist 15 cold. Similarly, if you have resist 5 cold and then gain resist 2 to all damage, you still have resist 5 cold, not resist 7 cold.

http://www.wizards.com/dndinsider/compendium/glossary.aspx?id=130 (Requires DDI Subscription.)

The compendium lists MM2 as the source, but I do not have that book, so I can't tell you where.