To splice quarter round molding, make sure that the correct size has been selected. The molding is manufactured in different sizes, the most common being ¾ inch quarter round which is its actual size unlike conventional lumber in which a 1-inch by four-inch piece of timber is actually only ¾ of an inch thick. This molding is an inexpensive way of improving the look of a baseboard.
Step 1 – Cut the Molding
Cut the molding at a 45 degree angle then measure the total length. If you are putting the molding into a square or rectangular room, all of the cuts will be at a 45 degree angle with all angles running to the center of the molding.
Step 2 – Work Around Projections
Every room has at least one door, so make butt joints where the baseboard comes up against the door frame without the 45 degree angle. Fix the molding around any projections using 45 degree mitre joints with the cuts at opposite angles to the first cuts.
Step 3 – Splice the Molding
Splice any lengths of molding with two opposite 45 degree cuts. The cuts should fit neatly together. Driving the nails at an angle, fix the molding to the floor with No 6 or No 8 finish nails. Fill the nail holes with putty.