Roofing Washington, One Home at a Time
We set splash blocks beneath downspouts to disperse runoff and stop erosion at the discharge point.
Where a downspout empties, the concentrated stream can carve a trench and undermine the soil against your foundation over a single wet winter. A properly placed splash block spreads that flow out and directs it away from the house. We set each block on stable, graded ground so it stays put and keeps sloping runoff in the right direction. It is a small, inexpensive detail that prevents the erosion and pooling our persistent rain would otherwise cause.
Disperses concentrated downspout flow to prevent erosion; directs runoff away from the foundation; inexpensive protection against soil undermining; easy to reposition or replace as needed; set on graded ground so it stays effective
1) Identify each downspout discharge point; 2) Grade and stabilize the ground beneath it; 3) Set the splash block sloping away from the house; 4) Confirm runoff spreads and flows in the right direction
Number of downspouts to serve; splash block material and size; grading needed at each discharge point; accessibility around landscaping; matching the block to the home's exterior
Set splash blocks before the rainy season to guard against winter erosion.