Home | Community | Message Board

Please support our sponsors.

Mushrooms, Mycology and Psychedelics >> Advanced Mycology

Welcome to the Shroomery Message Board! You are experiencing a small sample of what the site has to offer. Please login or register to post messages and view our exclusive members-only content. You'll gain access to additional forums, file attachments, board customizations, encrypted private messages, and much more!

Jump to first unread post. Pages: 1
Whoa! You guysneed to lightenup!

Registered: 02/04/03
Posts: 716
Loc: The Yard
Last seen: 14 years, 10 months
Hmmm...cellulose insulation...
    #1686045 - 07/04/03 10:46 AM (14 years, 10 months ago)


Cellulose has grown into an excellent insulation product when installed correcly. Cellulose can be installed in existing walls at a density insufficient to offset settling over time. A decade ago only densities of 3.5-4.4 lb/ft3 (depending on test accuracy) were adequate to ensure that gaps do not form over time. New technology has produced more resilient cellulose, and much lower non-settling densities are now plausible, according to Dave Yarborough of Tennessee Technical College.

However, significant voids are often left when cellulose is blown into old walls that have undetected blocks or other irregularities. If installed at the proper density, cellulose will perform well and will also substantially decrease air leakage in an old house. "Dense-packing" is an installation system that uses a tube inserted into the cavity to blow the material and also to locate any hidden blockages. I always recommend using a contractor familiar with this method for retrofits, as it is superior in terms of reducing air leakage and enssuring full insulation of the walls.

Blown into an attic, substantial settling is common (see "Cheating--The Insulation Industry's Dirty Secret," p. 24). A written guarantee of settled depth, with markers installed to facilitate checking by the homeowner, should be specified.

In the Par-Pac system, cellulose is blown through a tough, cross-linked polyethylene material. This provides a good vapor barrier and makes it possible to visually confirm the absence of voids. A less expensive alternative is Regal Wall, a fishnet rather than polyethylene material, which is not a vapor barrier.

Spraying cellulose into open cavities with an adhesive binder is an attractive option. A small amount of water is typically added to activate the adhesive. Large manufacturers of cellulose increasingly offer this option. Nu-Wool is one of several good products. The cost and availability will depend on the proximity of an installation contractor.

Spraying cellulose with water added is also popular. This method can be messy, and problems can arise if guidelines for installation are not followed. It is especially important to follow the guidelines for maximum moisture content before drywall can be installed. Allowing sufficient drying can disrupt construction, and judgment on the proper degree of drying must be accurate. However, performance is excellent if these drawbacks are not a barrier to use.


Should the US relegalize drugs?


Post Extras: Print Post  Remind Me! Notify Moderator

Registered: 10/27/98
Posts: 5,389
Loc: The Matrix
Re: Hmmm...cellulose insulation... [Re: BigJohnson]
    #1686190 - 07/04/03 12:02 PM (14 years, 10 months ago)

I have thought the same thought. I'd love to have a well insulated house.

If I ever got bored I could inoculate the walls...now that would be a trip. Imagine seeing an oyster fruiting from the ceiling.

I had a friend who's ceiling fell down and left the cellulose all over the place. I may be able to obtain some for an experiment.


The Shroomery Bookstore

Great books for inquiring minds!

"Life After Death is Saprophytic!"

Post Extras: Print Post  Remind Me! Notify Moderator
Jump to top. Pages: 1

Mushrooms, Mycology and Psychedelics >> Advanced Mycology

Similar ThreadsPosterViewsRepliesLast post
* Greensulate Insulation from Mushrooms
( 1 2 all )
legallyhomeless 4,174 22 01/31/08 08:10 PM
by falcon
( 1 2 3 all )
agar 6,352 54 06/04/05 08:30 AM
by mattymonkey
* Lab grade Incubators carnage 5,517 18 12/08/10 03:48 AM
by total
* Electrostatic & live collection of spores Baby_Hitler 1,459 12 02/17/08 12:54 PM
by D4NK
* The King of Shit returns!
( 1 2 3 all )
Anonymous 6,318 42 05/05/01 06:04 PM
by MNmyc
* BIG DADDY WET PASTURIZING MACHINE: agar 2,343 13 12/31/04 12:32 AM
by jeff01
* hydroponic mushrooms!? deloner 1,211 5 10/10/02 09:58 PM
by angryshroom
* Multi chamber climate control! lipa 2,776 16 03/26/08 07:08 PM
by lipa

Extra information
You cannot start new topics / You cannot reply to topics
HTML is disabled / BBCode is enabled
Moderator: RogerRabbit, bodhisatta
469 topic views. 0 members, 2 guests and 0 web crawlers are browsing this forum.
[ Toggle Favorite | Print Topic | Stats ]
Search this thread:
Shroom Supply
Please support our sponsors.

Copyright 1997-2018 Mind Media. Some rights reserved.

Generated in 0.03 seconds spending 0.008 seconds on 19 queries.