Why Seattle carpets soil the way they do
Seattle's glacial-till subsoil produces a fine grey silt that tracks in from parking strips and unpaved alleys, and it settles deep in the pile where a household vacuum never reaches. Add the moss and algae fragments that come off shaded north-facing walkways nine months of the year and you get the grey-green cast so common on light carpet in Ballard and Wallingford.
Surface methods move that material around. Our truck-mounted hot water extraction is built to lift it out of the structure of the carpet and off the job site, which is why the rinse water tells the real story on a Seattle job.



