1. The door system should be resealed every 1 to 7 years depending upon weather exposure. For best results, apply multiple light coats. Before you can spray paint any type of fiberglass surface, you will need to employ specific preparation techniques to condition the fiberglass to accept paint, or the finish will peel soon after application. Wipe the door with mineral spirits to clean any dust or residue from the surface. A minimum of two coats of top-coat are initially required for complete protection. 3. Stir the stain well. Chemically strip fiberglass doors if they have flaking paint—you'll quickly ruin a fiberglass door (smooth or wood grain) if you scrape or sand it. Cleaning fiberglass is easy using warm water, white vinegar, and other household cleaning products. Allow the door surface to dry completely before applying paint. Painting Your Fiberglass Entry Door. Most professional painters remove the fiberglass door before painting on it.If you are doing it by yourself, you can leave it as it is. This makes it a lot easier to paint, but is optional. Before you actually begin painting your door, make sure that you clean the surface thoroughly with soap and water. If your home was built before 1979, check the paint for lead before you scrape or sand. It is a good idea to remove the door from its hinges. one edge of the door to the other. Cleaning the fiberglass doors is an easy task, requiring just a few simple household ingredients. High-quality fiberglass doors offer the beauty of natural wood without any of its problems, such as cracking, rotting or warping. Do not use hydro-carbon based solvents to clean the surface, as such products may leave a residue. Cleaning Fiberglass Surfaces. Use sandpaper rather than a scraper on metal doors. We highly recommend practicing the technique before you attempt to stain the entire door. The door can also be rolled for a stipple look. Allow it to dry. CAUTION! Basic Fiberglass Preparation Process Before Painting Fiberglass is a type of plastic that is impregnated with small glass fibers for ... of multiple fiberglass components (like the body, doors, and hood of a car), ... Clean the entire fiberglass component with … The right type of paint and primer will ensure that your paint bonds well to the door. Then paint the stiles from the top of the door to the bottom. Find more information, here. Dip a clean rag in warm water, squeeze excess water and wipe the surfaces. Clean the door with a clean, lint-free cloth, removing all dust and foreign debris. Get rid of tough stains from a fiberglass bathtub and clean grime, mildew, and soap scum from fiberglass materials with ease by using the right materials.. Step-by-Step Guide: 1. Unlike wood, fiberglass surfaces are nonporous, making them unsuitable for spray paint adhesion. You can avoid flaking or bubbling paint and it will protect the surface of your door for a long time. Available in a wide range of styles, paints and stains, fiberglass can be repainted or stained by do-it-yourselfers in a method similar to painting natural wood. Before painting the door, make sure that it is clean enough. Just make sure that you cover the surrounding area including the glass with plastic to avoid accidental paint drips. To remove the door, unscrew the hinges and place the door on top of sawhorses. the life of the stain and top-coat by cleaning the door several times a year. Sometimes you may experience staining on your fiberglass that is hard to remove. Apply stain liberally in this small area with the sponge brush and remove excess stain gradually until the depth of color is satisfactory. How to Paint Exterior Doors Obtain a feel for the staining process by picking a small, flat area on the door to practice. Clean with warm soapy water, rinse and towel dry. By using ingredients you have on hand in the home, each cleaning will cost just a few cents. Cover the surrounding area .