Gutter Soakaway Blocked -

The most common cause of blockage is the ingress of fines. Roof gutters collect not only rain but also leaf litter, moss, and atmospheric dust. If gutters are not cleaned, this organic matter washes down the downpipe and into the soakaway crate or pit. Over time, this forms a "sludge" at the bottom of the soakaway and, more critically, clogs the pores of the surrounding soil, reducing its permeability.

Note: This paper is for informational purposes. Major excavation work should always be checked against local building regulations (e.g., Approved Document H in the UK) and utility maps before digging. gutter soakaway blocked

Disconnect the downpipe from the underground drain. Stick a garden hose into the underground pipe at full pressure. Time how long it takes to overflow. The most common cause of blockage is the ingress of fines