IMPORTANT: TO INSURE PROPER CROWN MOULDING INSTALLATION, HIGH QUALITY ADHESIVE MUST BE USED ON ALL JOINTS (Preferably 100% Urethane PL Premium Adhesive)
Please follow instructions carefully
Mouldings should be stored in a cool, dry area before installation. Lancrest Crown Molding should be cut for length such that pieces fit tightly. Allow about 1/16” extra length per section and spring cornice pieces into place.
Layout where crown molding installation will be done by preferably marking the location of any studs or joists on the molding. Install all corner blocks first. Ideally you will want to nail/screw through molding into wall and ceiling at each end and in the middle of each length. (For a total of 6 nails/screws per 8' piece). Predrilling is not necessary.
Apply PL premium adhesive along the mating surfaces where the molding will meet the ceiling and wall (use sparingly, small dots not a long bead, gives you more grab and less mess, a small amount goes a long way) . Apply the molding to the wall/ceiling and "shimmy" against wall and ceiling to assure the adhesive is contacting surfaces. As stated above, countersink the nails/screws through molding into wall/ceiling.
Apply PL premium adhesive to the end joint of the installed molding prior to installing the next piece. Adhesive is only required on one side of the joint and only a very small amount is necessary. When installing next piece, insure the joint surfaces are making good contact by "shimmying" molding against installed piece. Install new piece against the neighboring piece as tightly as possible. Any adhesive which squeezes out of the joint can be wiped off or cut/sanded after cure. Use the same steps for both butt and miter joints. Continue with the above steps around the room.
There might be significant gaps between the molding and wall/ceiling or the corner blocks which should be filled with a paintable latex caulk, (Lightning Brand recommended) wiped smooth and allowed to cure. Any joints and any screw/nailholes can be filled with drywall compound. Once dry, patched areas can be sanded with a fine grit paper. Repeat filling and sanding process if necessary. Prime any patched areas, preferably with an oil based primer. Allow primer to dry.
Then, wipe the molding down with a damp cloth and allow to dry. A lot of dust typically exists in a building/remodeling environment, make sure the product is free from any dirt, dust or debris before painting.