Replies

1. 
   Stilletto | May 15, 2007 01:54am | #1

   3 tabs will not hide interlocking shingles,  T-locks or Goslin shingles. 

   Where they overlap is quite a bit thicker than the middle of the shingle,  the new shingles will highlight that. 

    

1. 
   sledge | May 15, 2007 02:28am | #2

   Are you suggesting I re-roof with T-Lock or goslin?

   Ed

1. 
   Stilletto | May 15, 2007 02:36am | #4

   Yes,  it will hide the other layer alot better than 3 tabs. 

    

2. 
   Dave45 | May 15, 2007 02:33am | #3

   I'm against putting new roofing over old under any circumstances.  My standard arguments are:

   • The old roof has probably been there for 20+ years and that means that the decking, rafters, flashing, etc hasn't been looked at (or repaired) for 20+ years, either!
   • Far too often, the old roof "telegraphs" thru the new one - and that seldom looks very good.
   • New shingle warranties are usually invalid unless they're laid on a clean deck.

   
   

   ---

   Edited 5/14/2007 7:34 pm by Dave45

3. 
   Piffin | May 15, 2007 06:13pm | #5

   using three tabs over the interlocks is a bad idea. It will shadow, llook bad, and not last as long as it would other wise.

   T-Locks were developed for two purposes, one was wind resistance, the other was for roofing over old cedar shingle roofs

    

    

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