Draw dimension lines on ceiling and wall.
Place moulding along the dimension lines. Drive screw or use air nailers to fix moulding on ceiling and wall.
Mix P.U.Adhesive for interior work and apply on the joint of mouldings. For exterior, use P.U.Adhesive for exterior work only. Clean the exceed glue with damp clothes.
Drive screw or nail on both sides of joint.
Fill the gap between mouldings and ceiling or wall with acrylic sealant.
Fill screw or nail marks and surface imperfections with wall putty.
Clean and lightly scuff off the primer coat before finishing.
Polydec moulding can be paintes with any kind to painted.