Bee Cave Re-Roof, Slow-Slope Shingle Weaving

What this shows: A Bee Cave re-roof using slow-slope shingle weaving, the technique the title names for lower pitches. We keep it because it shows installation detail on an actual job rather than a diagram.

Pitch decides whether a shingle is the right material at all. Above 4:12 an asphalt shingle roof sheds water by gravity and one layer of underlayment is enough. Between 2:12 and 4:12 the water moves slowly enough that code requires two layers of underlayment, lapped, because the shingles alone are no longer the waterproofing layer. Below 2:12 asphalt shingles are not permitted, and a roof in that range needs a membrane instead. Hill Country homes often have one section that quietly crosses one of those lines, usually a porch return or a low addition tied into a steeper main roof, and that section is where the roof leaks while the rest of it performs fine.

Published February 2026. Texas Roof Permits and Codes covers this subject in full, and roofing in Bee Cave is the local page for this work.