Showing the effect of installing a gutter down spout splash block backwards. When installed on grass or other finish grades the block should discharge away from the building. The purpose of the splash block is to collect water exiting the downspout and spread it across a wider area discharging it well away from the foundation to prevent erosion of soil at the foundation. Ideally the discharge should be into grass or onto another surface which will not easily erode, but if it does it is eroding well away from the foundation. The blocked end should always be at the foundation side. This reduce the potential water will wash out toward the foundation. While I agree that the block should be sloped from the foundation the ideal slope cannot always be achieved in the real world. The blocked end allows for the widest application and for the longest period before the block has to be reset, if at all. There are some applications where installing it backward can be beneficial for a short period of time. In new construction where there is sand or loose soil around the building putting the block in at a significant slope, and backwards, does reduce washout, but once grass is installed this should be corrected. Hope this helps.
See my other video showing a properly sloped splash block full of water demonstrating that washing to the foundation will occur: [ Ссылка ]
