What kind of paint do you use on exterior wood trim?

Choosing the right type of paint for exterior wood trim can seem overwhelming given the number of options available. However, with some key considerations in mind, you can narrow down your choices to find the best paint for your specific project. The main factors to think about are the type of wood, your local climate conditions, and the desired finish.

In this comprehensive guide, we’ll walk through the pros and cons of different exterior trim paint options including latex, oil-based, and specialty paints. We’ll also look at important prep work needed before painting. With the right information, you’ll be able to make an informed decision on the optimal exterior wood trim paint for your home.

Types of Exterior Wood Trim Paint

When it comes to exterior wood trim paint, you generally have three main options:

Latex Paint

Latex paint, also known as acrylic paint, has become the most popular choice for exterior painting projects. Here are some of the benefits of using latex paint on wood trim:

• More flexible finish – Latex paints expand and contract with the wood as temperatures fluctuate. This prevents cracking and peeling.
• Low odor and VOC – Latex paints have fewer odors and release lower Volatile Organic Compounds (VOCs) than oil-based options.
• Water clean up – Latex paint brushes and equipment can be cleaned with soap and water.
• Good color retention – Latex holds color well over time compared to some oil paints which experience fading.
• Dries more quickly – Latex paint generally dries within 2-4 hours allowing for fast recoating.
• More affordable – Latex paints are generally cheaper than oil-based options.

However, there are some downsides to consider with latex paint:

• Lower durability – Latex paints are less durable than some oil-based options, especially in harsh climates.
• Prone to blocking – Latex paints are more likely to stick together when painted surfaces come into contact.
• Sensitive to temperature – Latex paints shouldn’t be applied in very cold or very hot conditions.

Overall, latex paint is a great choice for exterior wood trim in mild to moderate climates. Be sure to choose a high quality exterior latex paint with some elasticity to avoid cracking and peeling. Latex is easier to work with and better for the environment than oil-based options.

Oil-Based Paint

Oil-based paints have traditionally been used for exterior wood surfaces. The main benefits of oil-based paint include:

• Greater durability – Oil paints create a harder, more durable finish less prone to damage.
• Ideal for harsh climates – The tough finish of oil paints make them well suited for very hot, cold, and wet climates.
• Resists blocking – Oil paints are less likely to stick to other painted surfaces.
• Provide excellent adhesion – Oil-based paints bind tightly to exterior wood.

However, oil-based paints also have some significant drawbacks:

• Long dry time – Oil paints can take up to 24 hours to fully dry between coats.
• Strong odor & VOCs – Oil paints have high VOC levels and very strong fumes.
• Difficult clean up – Brushes must be cleaned with solvents like paint thinner.
• Prone to fading – Oil paints tend to experience fading over time, losing their original color.
• Brittle finish – Oil paint will eventually become brittle, leading to cracking and peeling.

Today, oil-based paints have become less popular for exterior use due to the advantages of latex paints. However, oil-based paint may still be a good choice for trim in very cold climates that demand maximum durability.

Specialty Paints

There are a few specialty exterior paint formulations that have specific benefits for wood trim:

• Alkyd Paint – Alkyd paints are oil-based paints modified with alkyd resins. This makes them tougher and more flexible than traditional oil paints while still providing a hard, durable finish. They also have faster dry times.
• UV-Resistant Clear Coats – You can apply a clear topcoat over paint that is formulated to resist UV damage. This helps protect exterior wood trim from sun exposure and fading.
• Textured Paints – Textured or elastomeric paints can flex more easily without cracking. They provide excellent protection on wood siding and trim.
• Primers – High-quality exterior primers will improve adhesion and durability of your topcoat paint.

These specialty paints can be beneficial for difficult exterior painting projects. However, they come at a higher cost than standard latex and oil-based paints. Only use them if you specifically need their unique properties.

How to Prepare Exterior Wood Trim for Painting

Proper prep work is crucial before painting exterior wood trim. Here are some key steps:

1. Repair any damaged wood – Fill holes, replace rotten areas, and sand down imperfections in the trim.
2. Remove old paint – Strip off any cracked or peeling paint until you expose bare wood.
3. Sand surfaces – Lightly sand to smooth out the wood. Always sand in the direction of the grain.
4. Clean surfaces – Wipe trim with a damp cloth to remove dust and grime.
5. Apply primer – Use an exterior wood primer to seal the surface.
6. Caulk gaps – Seal any cracks and joints with exterior-rated caulk.

Taking these preparatory steps allows the new paint to adhere tightly for a beautifully flawless finish. Never skip the prep work when painting exterior wood trim.

How to Choose the Right Exterior Paint Sheen

The sheen or gloss level of the paint impacts its durability and appearance:

• Flat – Provides a matte look but is harder to clean. Can highlight imperfections.
• Satin – Has a low luster. Minimizes imperfections better than flat.
• Semi-Gloss – Has moderate shine. Easier to clean and very durable.
• Gloss – High shine finish. Requires smoother surfaces but easiest to clean.

Satin and semi-gloss sheens are best for exterior wood trim. They provide excellent protection while looking beautiful. Flat or gloss paints are harder to properly maintain on exterior trim over time.

How Should You Apply the Paint?

Follow these tips for flawlessly painting your exterior wood trim:

• Only paint in dry conditions when temperatures are between 50-90°F.
• Use high-quality nylon or polyester brushes.
• Maintain a wet edge to prevent lap marks by brushing from wet into dry paint areas.
• Apply paint generously and evenly while brushing in the direction of the wood grain.
• Use an extension pole for hard-to-reach areas under eaves.
• Apply two coats allowing proper dry time between coats.
• Inspect for drips or missed spots and smooth them out.

Take your time to apply the paint carefully. This will provide the long-lasting finish exterior wood trim needs.

How Frequently Should Exterior Trim Paint be Applied?

On properly prepped and sealed wood, exterior trim paints should last around 5-10 years before needing fresh coats. However, the lifespan can vary based on these factors:

• Quality of paint used – Better quality paints last longer.
• Climate conditions – Hot, humid, and very sunny climates cause faster breakdown.
• Application – Proper application results in increased durability.
• Regular maintenance – Addressing any issues early on extends lifespan.

You should visually inspect trim annually. Refresh any problem areas as needed. Completely repainting every 7-10 years is a good rule of thumb for maintaining your exterior wood trim. Proper upkeep results in trim that stays beautiful year after year.

Conclusion

Choosing exterior paint for wood trim involves considering paint type, proper prep, application techniques, and maintenance. Latex and oil-based paints both have benefits depending on climate and project needs. With the right prep work and application, exterior trim paints can last 7-10 years before needing renewal. Investing in high quality materials and taking your time leads to a durable, flawless finish.