Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.

Can you install blown-in insulation over an existing vapor barrier?

April 26, 2017barrier existing Home install insulate insulation renovations vapor

0

Posted

Can you install blown-in insulation over an existing vapor barrier?

1 Answer

0

Posted

Can you install blown-in insulation over an existing vapor barrier?I have an older home…The attic is finished but needs some work. I want to add some insulation there is about 4 inches up there with a vapor barrier up, facing towards the roof. I am wanting to use the blown-in type. My question is can I blow the blown-in right on top of the vapor barrier or do i need to remove the old insulation. The vapor barrier is breaking down and just crumbles.Answer: I’m sure you know what the so-called “right” answer is: take everything out and start fresh. But I can think of no task more horrifying than removing old insulation and a crumbling vapor barrier. So, what are your alternatives? If that vapor barrier is kraft paper, that explains why it’s falling apart. Experts say that if you are putting in a second layer of insulation, you should not have a vapor barrier between the two layers. So, at the very least, remove that crumbly vapor barrier and keep the existing insulation in place. I’m n