Step 4: Clean & Prepare the Surface

Use microfiber cloths to clean away dust, dirt, or grime. Be on the lookout for mold or wood rot. Wipe down surrounding areas to prevent debris from falling onto fresh paint.

Check weather conditions before starting exterior projects—make sure everything is dry. Fill cracks or holes with wood filler using a putty knife. Once dry, sand the area smooth. Wipe away any remaining dust. Consider applying caulk around edges to seal gaps and improve energy efficiency.

Step 6: Tape Off Your Work Area

Apply painter’s tape around the trim edges to keep lines clean and protect nearby surfaces. Choose your tape based on the surface and carefully overlap corners to avoid bleeding. You can also tape or cover the glass to protect window panes.

Step 7: Prime Before You Paint

Primer helps the paint adhere better and offers protection—especially important for porous or bare surfaces. Use a damp brush for even application. Start with edges and corners, then cover the rest. For best results, apply two coats, allowing proper drying time between each. Check your primer label for timing guidelines.

Step 8: Paint Your Window Trim

Interior Trim

Start with less visible areas like the sides and bottom. Apply thin, even coats—whether using a brush or roller.

Brush technique: Dip only one-third of the bristles, wipe off excess, and apply with long, even strokes.

Roller technique: Dip less than halfway and roll off excess in a tray before applying.

Let each coat dry fully before applying the next. Once done, remove painter’s tape carefully.

Exterior Trim

Start with the least visible edge. Use an angled brush and even strokes to avoid streaks. Allow coats to dry before applying the next one. For longevity, follow up with a weather-resistant sealant after 30 to 90 days.

Step 9: Apply Sealant (Optional but Recommended)

Sealants provide an extra layer of protection.

Interior: Use a polymer or polyurethane sealant.

Exterior: Use silicone for weather protection.

Wax alternative: Carnauba (natural wax) lasts 3–8 weeks, synthetic wax up to 6 months.

Always verify product compatibility with your trim material.

Step 10: Ongoing Maintenance

Keep your trim looking fresh by cleaning it regularly with mild products. Avoid pressure washing. Watch for moisture damage, rot, or mold and address any issues promptly.

Cleaning Tips by Material:

• Wood: Damp cloth + mild dish soap. Polish with wood cleaner every few months.

• Painted Wood: Clean every 6–12 months with a gentle cleaner.

• MDF: Use microfiber cloth and mild cleaner. Deep clean with vinegar mix twice a year.

• PVC: Use all-purpose cleaner regularly and non-abrasive PVC cleaner annually.

• Metal: Wipe down twice a year with mild detergent. Use a soft brush for tough stains.

Reapply sealants every 1–5 years depending on product specs.