Apply Underlayment and Mark Valley

What happens here

Once the entire wooden cricket structure is complete and all surfaces are smooth and properly sloped, apply a layer of roofing felt or appropriate synthetic underlayment over the entire area. This provides an additional layer of waterproofing and prepares the surface for the shingles. Overlap the underlayment properly, ensuring a watertight seal. Next, accurately mark the valley lines over the underlayment using chalk lines. These lines will guide the placement of the woven shingles.