I'm having my roof redone as we speak and I noticed the roofer is installing ice and water shield under the drip edge. I thought it was supposed to be installed over the top of the drip edge? Everything I've found online indicates installing TWS over the drip edge. I questioned it and he said that under the drip edge was correct and they were going to install another strip over the drip edge before shingling. Is this OK or should I press the issue?
Ice and Water Shield under drip edge?
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sutterml
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Hands down, I have to agree with dmc@RCR. The I&W should always be draped down the roof decking and onto the fascia; approximately 3-4 inches. This prevents any and all water and/or ice migration from getting onto the roof deck or into the soffit.
If and when the need to replace the fascia arises, you have to remove the gutter apron and cut the I&W to remove the gutter so you can get the the fascia anyway... Then, once the fascia is replaced you reinstall a narrow strip of I&W up under the starter shingle and over the existing I&W (that you just cut to remove gutter) and back down over the fascia as previously noted above.
This is how I've been doing it on new residential construction homes for the past 7 years, and how I've done it throughout my construction/roofing career for the past 30 years. :thumbup:
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