[Greenbuilding] best lumber for raised vegetable beds
Kathy Cochran
kathys_old_house at goldrush.com
Fri Apr 15 16:18:35 CDT 2011
Thank you Tim, for the clarification. Do you have some brand names of TRUE
RPL?
Thanks, Kathy
From: greenbuilding-bounces at lists.bioenergylists.org
[mailto:greenbuilding-bounces at lists.bioenergylists.org] On Behalf Of Tim
Vireo Keating
Sent: Friday, April 15, 2011 11:31 AM
To: Green Building
Subject: Re: [Greenbuilding] best lumber for raised vegetable beds
No, no, no. Trex is NOT recycled plastic lumber. Trex is termed wood-plastic
composite lumber. The ASTM standards do not allow Trex to be called recycled
plastic lumber because it is composed of (50% or so) of wood. Trex will not
last 'forever' nor, according to Trex, even more than 10 years (I believe
that is the length of their warranty - but I may be wrong about that, as
they've worked with their formula over the years).
Only materials made with either all plastic components or plastic and
fiberglass will resist the elements outdoors for 200 years or more (the
estimate for HDPE RPL or RPLs with HDPE and fiberglass). These materials do
not stain, warp, rot or take on moisture, or leach any chemicals. They are
virtually non-reactive with water and other water-based solutions.
But Trex and other wood-plastic composite lumbers have been backed by large
amounts of capital, be it from Mobil (Trex, back in the day) or timber
companies, Weatherbest, etc.
True RPLs, because they last so long and don't use any sawdust, have been
unable to find the kinds of backing that corporations are willing to give to
shorter-lived products, and thus labor in obscurity - even though they have
been used by the US Army Corps of Engineers for bridges that can accommodate
tanks and even locomotives.
tim keating
At 9:45 AM -0700 4/14/11, Kathy Cochran wrote:
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Recycled Plastic Lumber =è Trex, or similar products?
From: greenbuilding-bounces at lists.bioenergylists.org
[mailto:greenbuilding-bounces at lists.bioenergylists.org] On Behalf Of Ron
Cascio
Sent: Thursday, April 14, 2011 9:40 AM
To: Green Building
Subject: Re: [Greenbuilding] best lumber for raised vegetable beds
RLP ?
----- Original Message -----
From: Tim Vireo Keating <mailto:t.keating at rainforestrelief.org>
To: Green Building <mailto:greenbuilding at lists.bioenergylists.org>
Sent: Thursday, April 14, 2011 10:41 AM
Subject: Re: [Greenbuilding] best lumber for raised vegetable beds
RPL is often the way to go when looking for durability in exterior
applications.
tim keating
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