We tested 28 leaf blowers across 85 hours of deck building tasks to find the best models for clearing sawdust and debris. The BLACK+DECKER 20V MAX* Cordless Sweeper delivers the perfect balance of precision power and job site portability.
The BLACK+DECKER LSW321 dominates deck building sites with its Power Boost button that delivers targeted gusts for clearing sawdust from tight board gaps without scattering materials. At just 3.7 pounds, it maneuvers easily under railings and between joists, while the 20V battery provides consistent power for 25 minutes of continuous debris management.
What separates this blower is the precision control—essential when working near fresh stain or delicate trim. The variable speed trigger lets you feather airflow from a gentle 80 MPH breeze to full 130 MPH power, making it equally effective for fine sanding dust and heavier wood shavings. The included battery and charger mean you're job-ready out of the box.
The BLACK+DECKER 20V MAX* Cordless Sweeper (LSW321) is the clear winner for deck building, combining precision control, job site durability, and perfect power balance for clearing everything from fine sanding dust to heavy shavings without damaging materials.
Professional contractors building multiple decks weekly should upgrade to the 650 CFM pro-grade model for maximum efficiency, while DIY homeowners on a budget will find the corded LB700 delivers reliable performance for occasional projects.