Straight seed consists of only one type of grass and is suited to situations where you want to achieve a certain look or effect. Blends (several varieties of one type) and mixtures (combination of different types) offer better disease resistance and a uniform lawn.lended Seed Mixtures: Blended seed mixtures combine several different kinds of the same grass species to capitalize on the strengths of each type. By using the same species, you can ensure a more consistent appearance to your lawn.
In new construction, the plumber will install a separate vent for any plumbing fixture that does not use the vanity vent. If a fixture has its own vent line, the line will run vertically to the attic and tie into the vent-and-soil stack if possible. If not, a separate roof exit is necessary. Alternately, the vent pipe can exit the home through an exterior wall, with the opening covered by a vent plate.
Without a vent pipe, flushing your toilet would be like trying to get all the water out of a straw with your finger held tightly to the top of the straw. It is frustrating to have leaks around the vent stacks BUT the leaking in your ceiling are not caused by rainwater flowing thru the stack vent pipe itself.