About Us

Tegger[_3_]

DerbyDad03 wrote in news:cd5ad97e-d828-4ae5-82e8-
:

When I bought a roll of R-19 fiberglass insulation the other day, the
guy in the orange vest had to cut open a package of 6 rolls. As he cut
the plastic outer wrapping the 6 rolls expanded by a considerable
amount...let's call it 50%, but the numbers don't really matter.

Then when I got home and cut open my individual roll, it expanded once
again...let's say another 50%, but again the numbers don't matter.

That tells me that the manufacturer is quite happy to compress the
insulation by a considerable amount for an extended period of time.

So here's my question:

If I put the 1/3 roll that I have left in one of those vacuum storage
bags and compress it down as far as I can, will it bounce back to it's
full size (and R value) next month, next year, next decade?

In other words, how long can insulation remain compressed before it
looses it ability to perform at it's original specs?

Good question. And I don't know the answer. But I have pensees (that's
French, and it doesn't mean what you think it means)...

Obviously, any deformation would have to be less than the plastic
deformation point of the material being deformed. And seeing as how
fiberglass insulation is, well, glass, I imagine it doesn't have the same
elasticity as, for instance, spring-steel. Squeeze it too far, and you
probably get a bunch of broken strands of glass.

P.S. those bags will indeed compress the insulation down by a whole
bunch! BTDT, last night.

Shipping is a big cost for items as bulky as fiberglass insulation. It
would make sense that any company run by reasonably-intelligent people
would have investigated the feasible limit of compressing their product so
as to save shipping costs. I therefore reason that the 50% compression that
you observed its probably close to that limit.

Some 20-years-ago, certain pillow and cushion manufacturers tried shipping
product that had been vacuum-packed into a flat state. This was done to
save shipping costs, and was supposed to be the wave of the future. The
problem was, it turned out that pillows de-poofed past a certain length of
time tended to stay de-poofed when eventually released from bondage. Nice
idea in theory, but not in practice.

--
Tegger

Thread Tools	Search this Thread
Show Printable Version	Search this Thread: Advanced Search
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
How resilient is fiberglass insulation?	hr(bob) [email protected]	Home Repair	0	January 9th 11 10:16 PM
How resilient is fiberglass insulation?	hr(bob) [email protected]	Home Repair	0	January 9th 11 10:15 PM
wrapped fiberglass insulation	Heathcliff	Home Repair	3	November 13th 08 05:30 PM
wrapped fiberglass insulation	Joe	Home Repair	0	October 24th 08 07:51 PM
Wet fiberglass insulation	Jeff	Home Repair	3	January 15th 05 06:09 AM

Menu

About Us