[Shop-talk] rigid insulation board

[Arvid Jedlicka]

The information was specifically related to maximizing the effectiveness
of the radiant barrier, not the pro's and con's of insulation in general.

My non-scientific experience agrees with yours. The garage is
considerably cooler in the summer and warmer in the winter after I
installed foam installation ... but it was simply pink foam board without
any reflective barrier.

Our observations suggest that significant benefits can be had by putting
up any insulation, and the information provided in the link provides the
manufacturers recommendations related to the radiant barrier component
if that is part of the material being installed. 

-----Original Message----- 
From: David Hillman 
Sent: Sunday, June 02, 2013 1:03 PM 
To: Arvid Jedlicka 
Cc: Shop Talk List 
Subject: Re: [Shop-talk] rigid insulation board 

On Sun, 2 Jun 2013, Arvid Jedlicka wrote:
> I think which way the foil is facing depends on what you are trying to do
> ... keep heat in or keep heat out. Based on the information here ...
>
> http://www.rimainternational.org/index.php/myths/

    In theory, that's probably true.  In my non-scientific experience with 
two garages, they are both substantially cooler in summer and warmer in 
winter than they were with uninsulated ceilings.  Neither have any A/C, 
and the one with heat noticed a drop in heating costs.

    For a about a year after I did mine, I kicked myself everyday for not 
doing it the week I bought the house.  YMMV.

--
  David Hillman