and i'm rich trethewey. for "this old house." so is it a new old beam, or... it's an old new beam.evin: coming up next time on "this old house"... today we'll build a new surround for our old front door. first of all, we have some rot, not only in the threshold to deal with, but look at the jamb and the trim on this side. look at that. and we're going to try to save our american beech tree. man: this is known as a deep root needle, and it's used for injecting liquid fertilizer. kevin: and we'll see what the design team has in store for our house. that's next time on "this old house." with your own two hands -- the original power tools. the home depot is proud to support "this old house" and do-it-yourselfers everywhere. it's a parade float. can we lose the parade float? thank you. gmc. lending "this old house" a helping hand since 2002. when the unexpected happens, state farm is there to get your old house to a better state. retailer of hardwood flooring. their wide selection includes bellawood prefinished, bamboo, laminate, and vinyl plank flooring. lumber liquidators is proud to

till next time, i'm rich trethewey for "ask this old house."ll right, these covers are just about buttoned up. kevin: next time on "ask this old house"... i'm going to take a crack at fixing this walkway. tom: so, ron, your team is going to be removing all of this mold on the underside of the roof. how are you going to do it? well, we use pelletized dry ice. comes out of the gun at such a high speed. it explodes into a vapor. that energy blows the mold right off the shingle. and we'll ask, "what is it?" that energy blows the mold right off the shingle. throw on a fresh coat. and finish with a big splash of style. the home depot is proud to support "ask this old house" d do-it-yourselfers everywhere. or a do-it-yourselfer at home, stanley is always ready to help you meet your how-to projects head on. stanley. proud sponsor of "ask this old house." man! what we need is some elbow grease. [ laughs ] yeah, you can -- are you kidding me? gmc -- lending "ask this old house" a helping hand since 2002. to see entire episodes any time, just go to video.