Begin by installing the tackless stripping around the edges of the room. Be sure to exclude doorways. The stripping should be placed 18 inch from the wall with the pins leaning toward the wall. The padding should be laid inside the strips. If you are working on wood flooring, staple the padding to the floor. When the floor is masonry you will need to use glue to adhere it to the floor. Allow the glue to dry completely before you proceed. This will keep your padding from slipping and bunching. If at all possible take your carpet to an adjoining room for cutting or take the measurements with you when you purchase the carpet and ask that it be pre-cut for you. Be sure when you do this to add a few extra inches excess on all sides. When making a pile cut you will need to cut along the back of the carpet with a utility knife. If you are cutting a loop pile carpet the cuts should be made through the face of the carpet. With the loop pile carpet you will need a row running knife to make your cuts. Once the carpet has been cut take it into the room you are carpeting and lay it out. Use your foot to kick it into place and then slash the excess carpet in the corners so the rug will lay flat.
If you find it necessary to seam your carpet, begin by over lapping the carpet edges about one inch where the seam will be made. Using your row running knife, cut the bottom layer and place hot melt seaming tape under the carpet edges. Use your seaming iron to melt the adhesive and press the edges together over the tape. Anchor the carpet at two adjacent walls with the knee kicker and power stretcher. If you have trouble finding a power stretcher use the knee kicker to work the carpet into the opposite two walls. The carpet will then need to be hammered into the tackless stripping. Using your running knife, trim away all the excess and tuck the edges of the carpet behind the stripping. For the doorways you will need metal edging to hold the edge of your carpet down securely. Once you have installed these at each doorway you can replace the quarter round molding and you are ready to enjoy your new carpet.