Re: [RE-wrenches] Engineered rafters

William For what it's worth, you may want to check with the rafter mfgr and/or Eng as it is possible they will not allow holes being drilled into them and you could open yourself up to liability issues. I have a structural eng who is insisting I squeeze a construction adhesive (such as LePage

Re: [RE-wrenches] Engineered rafters

We just did one, and I used some fairly short Timberlok type lags (thinner and stronger)  I wasn't super excited about only having an inch of wood to grab, but the edge wood is stronger and denser than regular 2x material it seemed.  I predrilled the holes, and g

[RE-wrenches] Engineered rafters

Friends: I am designing an installation on a roof built with engineered rafters. These are wood I-beams with 2X4s (or smaller) on flat, dadoed to accept an OSB flange in between. On top is sheeting and then sheet metal. I have never attached to engineered rafters I checked on DPW easy Fee