The W-Valley lasts longer and performs better than other conventional types of valleys. Woven, closed or open valleys slow the water flow, which means water stays on the roof longer and causes shingles to wear faster. Also, shingled valleys tend to collect debris. It conducts water away from the shingles and down into the gutters smoother and quicker than any other valley available. Our W-Valley is available in a range of colors that coordinate with your shingles.