Attic Cleaning Los Angeles CA - Although home insulation is very durable, over time, it can become damaged and less effective in preventing heat transfer. That is when you'll need to replace it. You should be aware that the only times when you should completely remove any section of insulation is when it has been fire damaged, water damaged, or has become infested with rodents, mold or other pests. If you think your insulation needs to be removed because it looks dirty or tattered, or you want to replace it with better insulation, the odds are that the insulation is still good and performing its job and need not be removed. A professional insulation inspection will reveal whether or not you need to replace your insulation - or just part of it.