Replies

1. 
   MikeFitz | Apr 14, 2006 12:44am | #1

   What about taking a piece of 3/4 birch ply a big as could reasonably be hidden behind the flat panel  (almost the size of the tv, I'm thinking) and finishing it with roundover edges, smooth sanded, and painted the same color as the wall.  I would screw the heck out of it into the osb, then fill the screw heads over so they disappear.  You could then mount a TV bracket to it and it would easily hold 50 pounds.  The limited fasteners which the bracket provided would hold if screwed through the 3/4 birch ply and the osb.  If you wanted to get fancy, you could recess the ply into the drywall so that only 1/4 inch stuck out.

   Besides, its not like they will be sleeping with their heads right under it, if it fell in the middle of the night.....    :) 

2. 
   limeyjoiner | Apr 14, 2006 12:55am | #2

   You could try these:

   http://www.constructionfixings.com/productdatasheets/hsthiloadcavityanchor.htm

   I don't know about US distributors but the company I get them from would probably send you a box

1. 
   nailbanger | Apr 14, 2006 02:08am | #3

   I've never seen those before. Do you think that 4 of them (I think that there were 4 holes in the bracket) would hold up 50 pounds?

   BILL

1. 
   limeyjoiner | Apr 14, 2006 03:41pm | #8

   Bill4 of them would easily hold 50lb the data sheet shows that one of the red ones can hold 85kg (187lb). We use them for kitchen installs, shelves, heated towel rails..... They are the next best thing to screwing into the studs.Data sheet:http://www.constructionfixings.com/Assets/pdfs/HST%20hi-load%20cavity%20anchor.pdf

1. 
   nailbanger | Apr 14, 2006 10:14pm | #9

   Thanks for the info! I have sent them an e-mail to see if they have any US distibutors. If not I may be in touch to ask you about your distributor. I am also going to send a copy of the PDF off to the timberframe comapny as they are alwys keeping their eys open for products like these that work well in their structures.

   Thanks Again,

   BILL

1. 
   betterbuiltnyc | Apr 15, 2006 03:04am | #11

   If you find a source, please post back. We used some that came packaged with some fancy european hardware, and loved them, but weren't able to source them.

2. 
   nailbanger | Apr 15, 2006 04:22am | #12

   I sent an e-mail to the manufacturer asking about US distributors. If I get a reply I'll post it.

   BILL

2. 
   highfigh | Apr 16, 2006 03:00am | #14

   If you think about it, four screws holding up 50 pounds means that each one is dealing with 12.5 lb if the load is evenly distributed. I hang TVs all the time and 1/4-20 toggle bolts will work fine. Add the weight of the mount to the equation, though. It sounds like this is an LCD TV if it's only 50 lb. To leave a slot in the foam, you can stick a screwdriver in after you drill the holes to loosen some of the foam and allow the toggle to open. Another way is to use the expanding metal retainers. They have a pointed end and when you tighten the screw, the point draws toward the screw head causing the middle to kink outward and as it finishes tightening, the four sides keep the retainer from coming through the wall. Also, the screw can be removed later without losing the retainer.
   "I cut this piece four times and it's still too short."

3. 
   frenchy | Apr 14, 2006 02:58am | #4

   nailbanger, 

     I like the idea of putting a piece of 3/4 inch plywood onto the wall, You could spread the load over many many screws and never, never  have any fear of pull out..

         I commonly see kicthen cabinetes hung on SIP's with little more than (close your ears Piffan) sheetrock screws holding them up.  I know that a loaded cabinat weighs far more than a flat panel TV does..

    

1. 
   nailbanger | Apr 14, 2006 03:12am | #5

   Piffen's gonna get you for that...

   I'm kinda going back & forth about the build-up idea. Ideally I'd rather avoid it, just because I don't want to see it, but realistically, that may turn out to be the best way to hold the weight with the fewest problems. If I paint it to match the wall and keep the size as small as possible (thanks MikeFitz), it would probably be alright.

   BILL

1. 
   frenchy | Apr 14, 2006 03:37am | #7

   nailbanger, 

      I haven't ticked off Piffan in a while so I thought I'd stir up the pot  <G>  

4. 
   Schelling | Apr 14, 2006 03:19am | #6

   Use short screws-1 1/2" Though these may be small and only holding in 7/16 osb, you can simply use more of them.  This is what we use for cabinets and have not had a problem. Deck screws work well.

5. 
   Piffin | Apr 15, 2006 02:24am | #10

   remember that the core of your SIPs is polyurethene foam.

   Whatever kind of insert you use can be set with Gorilla glue, which is polyurethene too. The fastener will become one with the core.

   Personally, I like the plywood mount base.

    

    

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1. 
   TomMGTC | Apr 16, 2006 01:53am | #13

   I didn't see where he specified what type of panels he is using. They could have an EPS core.

   I know they are quite different to work with in the field.

   Tom

   Douglasville, GA

   Edited 4/15/2006 6:55 pm ET by TomW