b'Carefully remove all the exterior trim, drip capping, Before replacing the jack studs, prop up the headerand brick mould casing.If the house has beenwith a temporary brace. Cut and remove the jackre-sided, remove the old J channel and replacestud carefully. Install a steel corner brace where thewith new so that it can butt-up to the new window header meets the king stud. Cut and install the 5/4correctly. stock to the right length, and nail securely. Install aCarefully measure the rough opening and compare it steel corner brace where the jack stud meets thewith the outside dimensions of the new Bay or Bow rough sill. If the jack studs are to be replaced on bothWindow. Sometimes, the construction in an older sides, cut and install a new rough sill after the newhome diverts from the expected. Large spaces were jack studs are installed and the temporary headerframed out and filled with insulation up to the old bracing is removed.window. These spaces can be filled in with 2x4 stock, If the opening is too small in height, the rough sill5/4 stock, even 1 inch stock. The concern you can be replaced with 5/4 stock which will increaseshould have is to make sure that the new window is the opening height 3/8. If that still isnt enough,structurally supported around the entire perimeter, then the cripple studs beneath the rough sill mayand that the opening is not more than 1/4 to 1/2 have to be shortened. It is advisable not to tamperlarger than the new window. It is always easier to with the header because that involves major con-make the opening smaller to fit the window. struction work.If the opening should be smaller than the window, it Installing the New Bay, Bow, or will probably not be more than 1/2 to 1 smaller.If the opening is smaller in the width you can replace Garden Windowone of the jack studs with a 5/4x 4board andgain 3/8 more clearance. Replacing both jack studswith 5/4 stock opens the width 3/4. Rough HeaderHead BoardBay, Bow, and Garden Windows designed for replace-ment come as an integral unit which includes headJamb and seat boards, all the windows, complete in asealed unit ready for installation.If the top and bot-tom are not sealed with coated aluminum to weather-proof them, it is advisable to do so before installation.Seat Board Even if you intend to cover the top and bottom, theextra step will prevent any deterioration of the unitfrom moisture buildup. Bay or Bow Window units are bulky and heavy andwill require help in installation. Use at least one per-Cornerson for every three feet of width. Because they areBracing built within 1/4 of the opening height, it is nearlySiding impossible to install the units from the outside dueto the height of the opening off the ground. It is sim-Support pler to insert the window into the house, right it to itsproper up-right position, and install it slowly fromthe inside as shown. First rest the outer edge of the projection on the sill,tilt the window unit up-right until the upper edge ofWindow Fitters Guide to Window Installation622020 AWDI, LLC Do not reproduce without permission'