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-   -   Top brands in roofing shingles (https://www.askmehelpdesk.com/showthread.php?t=668804)

  • Jun 9, 2012, 07:13 AM
    oilibomjg
    Top brands in roofing shingles
    Would you recommend installing new shingles on top of the old existing shingles on a house? What are the pro's and con's in addition to being cheaper...
  • Jun 9, 2012, 09:15 AM
    ma0641
    Cheaper labor is the only pro. Can your roof support another layer? If roof is truss built with 24" OC and OSB, I wouldn't do it. Stick built with 16" OC should be OK. 20 squares with 220# roofing is over 2 TONS of additional weight.
  • Jun 9, 2012, 10:12 AM
    creahands
    Depending on type of shingles, no more then 3 layers can be put on a stick built roof and no more then 2 on a truss roof.

    Chuck

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