Replies

1. 
   Gabe_Martel | Nov 02, 2001 04:09am | #1

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   I've never done 4" on exterior masonry walls before. I've done 2 layers of 1 1/2". The first layer is installed straight up between 2x2 vertical straps and the second layer is horizontal staggered, without strapping.

   SM is glued to the masonry, strapping is nailed to the masonry using regular 3 1/2" commons,nailed into pre-drilled holes with a piece of tie wire inserted.

   Second layer is glue to the first and nailed to the strapping with galvanized nails and washers.

   Just a thought

   Gabe

   This gives good structural support and uses cheaper attachement.

1. 
   Tim_Kline | Nov 02, 2001 05:00am | #2

   *Teresa, On the inside or outside ?

1. 
   teresa_greer | Nov 05, 2001 03:44am | #3

   *Mr.Martel;We think this is a solution to our question.Could you clarify several things.The attachment of the tie wire and its purpose?Your choice of adhesive,and material for strapping?Thank-you again,Teresa Greer

1. 
   teresa_greer | Nov 05, 2001 03:46am | #4

   *Mr. Kline;On The outside.Teresa Greer

1. 
   Gabe_Martel | Nov 05, 2001 04:16am | #5

   *Teresa,The nail and tie wire is an inexpensive alternative to tapcon screws or gripcon nails.You drill a hole through the wood strap and masonry block, the exact size of the nail to be used and insert a tie wire into it. Then you simply drive a standard common nail into the same hole. The wire will make the whole assembly tight and hold like a gripcon nail would, only much cheaper.This is how we nail the bottom plate of formwork to the footings to make sure they don't pull out.Bakor is our adhesive of choice. I don't know what is available in your area, but your local supplier will be able to better help you. You have to make sure that the adhesive is compatible with the SM insulation.Gabe

2. 
   teresa_greer | Nov 07, 2001 04:13am | #6

   *Thanks guys for all of your wonderful help on our questions.Teresa G.

2. 
   teresa_greer | Nov 07, 2001 04:13am | #7

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   We need to insulate our block walls with two layers of 2" extruded (4"total) polystyrene and then stucco.Can anyone recommend a reliable method of attaching the insulation to the block.
   Thanks in advance,Teresa Greer