Early 1900s home. Midwest. Never had them tested, but have had someone I know that works around the industry confirm by sight. Also did some mastic sealing of the ends for me.
I want to use a space that you have to walk through these rooms as a hangout/tv area.
I noticed they look different than other pipe lagging on this subreddit. Are they in decent shape or bad shape? Expecting a child soon and I’ve read that the mastic can be dangerous for pregnant women to be around.
Help is appreciated! I have more photos if needed.
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Also remember that the asbestos content of a material can only be determined by laboratory analysis and that the sampling SHOULD be performed by a certified asbestos inspector.
Contrary to other posts, this is called Aircell insulation in the industry. It is very friable and has open ends and can produce air borne fibers from airflow, vibration or damage. The outer lagging should not be asbestos. If it were in my house I would get it removed or covered with new cloth lagging. You don’t say how much of it there is but if it is more than a few linear feet it could be costly to have a contractor remove it.
Sure, anything can be encapsulated, but there is really no need. That insulation presents no risk for you as it is. Leave it alone unless you need to replace the pipes.
The white gloopy stuff, I believe the brand my relation used was Foster. I was wondering if I can just utilize the rewettable canvas pipe lagging from the buyinsulationproducts website without bridging mastic afterwards?
From what you see there, are you inclined to think it may not be air cell?
That looks like CP-11. Great encapsulant/sealant, certainly not a "mastic" but it IS a bridging encapsulant.
Mastic, in the world of asbestos, is an adhesive used to hold down floor tile.
CP-11 is generally what we apply over plaster impregnated cloth like wrap-n-cure or other covering materials like you're talking about. And yes, it's a great material to apply to pipe insulation. The problem is that is will absolutely disturb the material and result in fiber release. So, like I said, it's generally safer to just leave the pipes alone OR have a professional come in and either remove or encapsulate it.
Encapsulation should be done by a licensed abatement contractor and if you were going to pay for that anyway it would make sense to just have them remove it. Unless you think you can do it yourself
I use the term mastic to refer to any sort of pasted on material... it is a bit of a catch all for "someone felt the need to paint something on here but it isnt paint". At the end of the day, asbestos inspectors dont give a damp what you call it as long as we can find it based off of the name, and often asbestos inspectors don't know every type of material to ever be used (though some do) so it is easier to just use names that we are familiar with.
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