Replies

1. 
   UncleDunc | Feb 14, 2004 08:27am | #1

   Where do you live? How cold has it been outside? What surfaces are getting the condensation? How new is new?

1. 
   user-6992607 | Feb 15, 2004 01:58am | #3

   I'm on the NW coast so lots of moisture.  The building is about a year old with a poured foundation and floor.  I believe the concrete lets moisture in and the sun coming through the glass block windows creates the condensing situation.  As I said there is no ventilation in the space and only a garage door entrance.  I like the glass block windows and would like to keep them, that is why I was wondering about punching holes in a few for ventilation??

2. 
   JLazaro317 | Feb 14, 2004 04:54pm | #2

   I've seen a venting window that you remove 2-3 blocks and place in the center of your windows. I believe that I saw them at one of the big boxes.

   Have you thought of maybe a dehumidifier instead? Also if is not brand new construction (which might create high humidity), you may want to find the source of the moisture. A lot of factors can determine the high humidity.

   Good luck,

   John

   J.R. Lazaro Builders, Inc.

   Indianapolis, In.

   http://www.lazarobuilders.com

1. 
   user-6992607 | Feb 15, 2004 02:00am | #4

   I was wondering  about doing this without removing block.  Dehumidifier is not an option here, think I just need to provide some passive ventilation.

1. 
   JLazaro317 | Feb 15, 2004 04:24am | #6

   Don't think you can do the venting window option without removing block. You may be able to chisel or grind away mortar joints to remove a couple. Are you looking for constant ventilation or a window ?

   John

   J.R. Lazaro Builders, Inc.

   Indianapolis, In.

   http://www.lazarobuilders.com

3. 
   davidmeiland | Feb 15, 2004 02:11am | #5

   The instructions for Pittsburgh Corning glass block say you can't cut or drill them. I believe there's a vacuum inside, something like that. A place that sells block should also sell small operable window units that you glaze into a course of block as you set it. I'm not sure you could retrofit an existing window, but maybe. One place I know for sure that sells them is Glass Block Designs in San Francisco. They sell nothing but glass block products. You could call them and ask.

   Some 'glass' block is actually acrylic. Any chance yours is?

4. 
   USAnigel | Feb 15, 2004 05:39am | #7

   Blocks can be had predrilled for drier vents. Most vented glass block has a small jalousie type window built in the center. Might be easier to install a new opening somewhere to give you the venting you need.