TRADITIONAL ROOFING MAGAZINE

A publication of Joseph Jenkins, Inc., 143 Forest Lane, Grove City, PA 16127 USA; Ph: 814-786-9085

 


Traditional Roofing Magazine #8 -- Fall/ Winter 2010/2011

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How to Build a Snow Apron on a Slate Roof

Step-by-Step by Joseph Jenkins

Traditional Roofing Magazine Issue #8: How to Build a Snow Apron on a Slate Roof1. At left we see eaves on a 4:12 slope slate roof that has suffered chronic leakage from ice damming. Although heat cable had been installed, it had been nailed through the slates with 16 penny nails, doing more harm than good.

 

 

 

 

 

 


Traditional Roofing Magazine Issue #8: How to Build a Snow Apron on a Slate Roof2. Pull off all the slates and expose the rotted mess that you’re sure to find underneath.

 

 

 

 

 

 

 

 

 


Traditional Roofing Magazine Issue #8: How to Build a Snow Apron on a Slate Roof 3. Repair the rafters by scabbing new wood where needed.

 

 

 

 

 

 

 

 

 


Traditional Roofing Magazine Issue #8: How to Build a Snow Apron on a Slate Roof 4. Install new roof decking material. This is 1” rough-sawn hemlock lumber, similar to the material used on the original roof.

 

 

 

 

 

 

 


Traditional Roofing Magazine Issue #8: How to Build a Snow Apron on a Slate Roof5. Install 30 lb. felt over the repaired roof deck to weather it in.

 

 

 

 

 

 


Traditional Roofing Magazine Issue #8: How to Build a Snow Apron on a Slate Roof6. Install red rosin paper over the felt. This “slip sheet” is to allow the copper to expand and contract.

 

 

 

 

 

 


Traditional Roofing Magazine Issue #8: How to Build a Snow Apron on a Slate Roof7. Install a copper drip edge. This is 16 ounce copper.

 

 

 

 

 

 

 


Traditional Roofing Magazine Issue #8: How to Build a Snow Apron on a Slate Roof8. Prepare your copper flat-lock pans. These are 20 ounce half-hard copper pans made from 18”X24” stock. Read more about flat-lock soldered copper.

 

 

 

 

 

 

 

 

 

 

 

 


Traditional Roofing Magazine Issue #8:How to Build a Snow Apron on a Slate Roof9. Prepare 20 ounce copper cleats.

 

 

 

 

 

 

 


Traditional Roofing Magazine Issue #8:How to Build a Snow Apron on a Slate Roof10. Cleat the pans to the roof.

 

 

 

 

 

 

 

 

 

 


Traditional Roofing Magazine Issue #8: How to Build a Snow Apron on a Slate Roof

11. Hook the joints together, cleat the pans down, pound the seams flat with a dead-blow hammer, then solder the pans together. We’re using 50/50 tin/lead solder and an Express soldering iron here. We also use American Beauty electric soldering irons, Aero acetylene, and Sievert propane soldering irons for this work. All are available at SolderWarehouse.com.

 

 

 

 

 

 


Traditional Roofing Magazine Issue #8: How to Build a Snow Apron on a Slate Roof12. Continue to install and solder the copper snow apron pans until all the pans are installed.

 

 

 

 

 

 

 

 

 

 


Traditional Roofing Magazine Issue #8: How to Build a Snow Apron on a Slate Roof13. Hang a 1/2”X1” cant strip (cut from the hemlock roof deck lumber) on copper or stainless steel wires so that the slates will overlap the copper approximately 6” and overlap the cant strip approximately 2”. Use chalk lines to keep things straight.

 

Traditional Roofing Magazine Issue #8: How to Build a Snow Apron on a Slate Roof

 


Traditional Roofing Magazine Issue #8: How to Build a Snow Apron on a Slate Roof14. Install the starter course of slates, back side up.

 

 

 

 

 

 

 

 

 

 

 


Traditional Roofing Magazine Issue #8: How to Build a Snow Apron on a Slate Roof15. Install the field slates with nails and bibs or slate hooks.

 

 

 

 

 

 

 

 


Traditional Roofing Magazine Issue #8: How to Build a Snow Apron on a Slate Roof16. You now have an eave assembly that is waterproof!

 

 

 

 

 

 

 

 

 

 

 


 

Finally, you can solder copper snow guards onto the copper pans if you need a snow retention system.Traditional Roofing Magazine Issue #8: How to Build a Snow Apron on a Slate Roof

 

 

 

 

 

 

 

 

 


 

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