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Slateman Question – Underlayment

Jeff_Clarke | Posted in General Discussion on February 28, 2008 01:33am

Or, to anyone –

What do you think of using Titanium synthetic underlayment with nail/staple caps under a new slate roof?   I’ve always specified 30# felt.   Would the plastic caps create a bit of an irregular surface under the slate?

TIA –

 

Jeff

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  1. jayzog | Feb 28, 2008 01:40am | #1

    I am no Walter, but have done a few slate roofs. The last one , I did exactly as you are suggesting , the slates I was using were irregular enough that the caps made no difference whatsoever.

    I never use the plastic caps on asphalt though because I think the would quickly show through.

  2. theslateman | Feb 28, 2008 02:14am | #2

    Jeff,

    In the past I've always used 30 lb. felt too - laid so it's  double covered lots of times.

    Recently I've started using Titanium too. I have a Hitachi button nailer I use for both felt and synthetics - it's better than the staple ones I feel.

    On most button locations it won't be directly under the very top of the slate so it's not an issue. Where the button and nail is directly under the slates top I simply use the nail claw on my slate hammer to pull the button off and sink the nail a little deeper.

    Walter

     

     

    View ImageView Image

     

    1. User avater
      Jeff_Clarke | Feb 28, 2008 08:54am | #3

      Beautiful work Walter, and as always, thanks for the reassurance.

       

      Jeff

      1. theslateman | Feb 28, 2008 03:59pm | #6

        Jeff,

        How big a slate roof are you doing, and what kind of slate is it?

        Thanks for the kind words,   Walter

        1. User avater
          Jeff_Clarke | Feb 28, 2008 04:50pm | #7

          I'd say about 18-22 squares, Vermont gray.

          Jeff

    2. seeyou | Feb 28, 2008 03:40pm | #4

      Hey Walter -

      I noticed they used Permafelt on the timberframe job. You see much difference between it and Titanium? It's about $30/roll cheaper than Titanium here.http://grantlogan.net/

       

      Today we's learnin' about rawks. They's all kinds of rawks. These [picks up rock] is rawks which you throw. These here [throws rock at Rusty] is rawks that you get hit with.  E.Cuyler

      1. theslateman | Feb 28, 2008 03:56pm | #5

        Grant ,

        The GC's laid the Perma felt using my Hitachi nailer - I helped sheath one side, but they dried it in.

        I will know more about it once we start laying slate there. I'll install my copper drip , then 2 courses of Grace in place of the synthetic felt.

        We've got a couple courses of Sieger snow guards to install to retain the snow from cascading down onto the future metal roof below.

        I'll be posting a lot of the RW slate install so I'll know better about the two types in awhile.

        Walter

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