Replies

1. 
   Guest_ | Sep 30, 2000 06:47am | #3

   *
   I will be pouring a patio that will be 45 feet along the brick wall of my home. Do I really need and expansion joint? It will extend 16 feet from the house.
   What should it be made of?
   I live In liken SC.
   Thanks

1. 
   Guest_ | Sep 30, 2000 12:41am | #1

   *Hi Ken,Assuming that your slab is a perfect rectangle, you should install asphalt impregnated board between your house and the slab.Also, you should do saw cuts, 1 inch deep across the slab every 16 ft. for control joints.Gabe

1. 
   Guest_ | Sep 30, 2000 12:48am | #2

   *ken.. 16 x 45 is a big pour... you can break it up with cold joints and make them into your expansion joints..if you get a pro in to pour and finish.. he / she should know where to put them..if there are any penetrations or obstacles in the slab.. they should have expansion joints running from them..if the patio wraps around the corners of the house, there should be expansion joints radiating out from the corners..other than that.. i would break it up into an 8x8 pattern..they can be cut into the green concrete..or they can be finsihed in with a jointing tool ..or you can use the plastic ones that get inserted with the pouror you can form it into the squares and pour one against the other.. using welded wire mesh to unite the pours...if you do the last.. i wouldn't leave the forms in.. i would strip and tack an expansion joint material ( as gabe described above) to the abutting square and then pour to that..if you do it this way you will wind up with 10 squares.... each one 8 x 9..b but hey, whadda i no ?

1. 
   The_Machine | Sep 30, 2000 06:47am | #4

   *Mr. Bryan,Yes, you really need an expansion joint and control joints.The Machine