Understanding LP Siding: Pros, Cons, and Maintenance Tips

Written By Kenneth Wilson  |  0 Comments

LP siding, called Smartside, is a unique brand of engineered wood offered as a new and improved house siding option. Since it's growing in popularity in the US, it's time to decide whether it's a better option than other engineered wood and siding options or if you should stick with a more traditional choice.

LP siding is an engineered wood that offers the aesthetic benefit of natural wood but is far more durable, weather and rot resistant. LP siding is also more environmentally sustainable. As for the downsides, LP is expensive, causes problems if improperly installed, and isn't very UV resistant.

If you'd like to weigh out your siding options, LP Smartside is a worthy consideration. When you explore the pros and cons and understand the maintenance, you'll be able to determine if it's the right fit for your home.

LP Siding Defined, and its Pros and Cons

Typical siding options include wood, vinyl, aluminum, fiber cement, and engineered wood. So, what is LP siding? LP Smartside is a type of engineered wood built to withstand harsh exterior conditions. LP stands for Louisiana-Pacific Corporation, which is the name of the siding manufacturer.

Louisiana-Pacific Corporation has been in the industry since 1996, and its products have been tested against harsh environmental conditions, such as the highly humid and rainy forests of Hilo, Hawaii.

LP siding is made with the following materials:

  • Wood fibers
  • Water-resistant waxes
  • Industrial-grade adhesives
  • Finished with acrylic latex paint
  • Marine-grade resin within and an overlay
  • Zinc borate to ward off termites and withstand rotting

It is available in cedar, smooth, and reversible textures. You have the option of the following styles:

  • Trip siding
  • Lap siding
  • Shake and shingle siding
  • Panel and vertical siding
  • Soffit and fascia siding

LP Siding Pros

Louisiana-Pacific Corporation promises a lot of good from their product, which might make it stand out among the rest of your options. These are all the benefits of LP siding:

  • LP Smartside is easy to replace if need be.
  • It is low maintenance and mainly consists of cleaning.
  • It is available in 16-foot lengths which allows for fewer joining seams and faster installation.
  • It has an authentic wood appearance with a wood grain texture but is more robust, durable, and resistant to harsh elements and termites. The zinc borate within the siding also makes it ultra-resistant to fungus and rotting.
  • It is more environmentally sustainable than fiber cement and vinyl. LP sources wood with strict sustainable forestry standards.
  • The siding is impact-resistant and can withstand rocks hurled at 107 mph, golf balls at 63 mph, and baseballs at 77mph. This means the siding is ultra-resistant to hail and storm damage.
  • LP Smartside has a 5-year 100% warranty for both replacement and labor. However, LP will cover a replacement product for hail damage but not labor.
  • It is easy to repaint thanks to its overlay, which makes it better than some vinyl options that cannot be repainted.
  • LP wood siding has similar insulation R-values to vinyl, which means it adds decent insulation to your home, which puts less strain on your AC.
  • It is highly water resistant thanks to its waxes and resin-saturated overlay. The siding is also flexible to extreme temperature changes from humidity to frost.

LP Siding Cons

The downsides of this product are your true determining factors on whether it is a good choice for your siding project. The negatives of LP siding include:


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  • While it can be cost-effective compared to some siding materials like cedar, it may still be more expensive than vinyl and fiber cement options.
  • Although LP offers a warranty, it will not cover minor surface grazing from termites. The replacement guarantee also voids if you installed the siding improperly or altered it, such as with other finishes.
  • It loses its color quicker than vinyl - although it still takes years before doing so. LP siding is susceptible to sun damage, especially in areas with high UV exposure.
  • It is more sensitive to moisture-related issues than other options like fiber cement and vinyl. LP siding risks swelling and delamination if not correctly installed or maintained. Water damage leads to rot, decay, and structural damage.
  • Due to moisture sensitivity, power washing isn't recommended for cleaning LP siding, making it more labor-intensive to clean.
  • Although it is stronger than natural wood, it needs regular maintenance. This includes painting and sealing to protect against rain and UV damage. Failing to maintain LP siding can end in early deterioration.
  • It can be more complicated to install than other siding materials since it is a lesser-known material. It requires precise installation techniques, as doing so incorrectly can lead to issues down the line.

The Verdict

Proper installation is the most critical part of ensuring your LP siding remains sustainable. If you hire a qualified contractor, you mitigate most issues arising from installing it. LP siding offers you the aesthetic benefit of wood, but it is far more durable and environmentally sustainable.

This siding can withstand hail damage, termites, and rot but isn't the best option regarding UV durability. If installed correctly, water damage shouldn't be an issue, but you should avoid running sprinklers that contact the siding and power washing. As for cost, it is more expensive than other options like vinyl.

How to Maintain LP Siding

Keeping an engineered wood siding maintained is simple, and with proper maintenance, you can keep it durable for as many as 50 years!

Clean And Clear Your Siding Regularly.

If you notice any signs of mildew, spiderwebs, dirt, and debris, it's time to wipe it away with a non-abrasive cleaner or vinegar solution and then rinse it with a hose. Just remember that sprinklers and a pressure hose are a no-no as they could cause discoloration and force water beneath the panels, causing rot and damage. (Related article: How to Clean Vinyl Siding?)

You should also remove vines that grow onto the siding, and mulch should be kept 6 inches away.

Inspect Twice Yearly.

Your home's exterior is worth looking after, and a bi-annual checkup on the siding and roofing should ensure that everything is up to scratch. After heavy rainy seasons are the most crucial times for a checkup.

Clogged gutters can potentially cause water damage to your LP siding, too, so you'll want to look out for that when you inspect!

Repair As Needed.

Always address damages you discover during inspections. Repair small cracks and missing sealant with compatible wood filler or patching compound. Replace damaged and deteriorated panels when needed.

Touch Up The Paint.

If you notice any paint cracks or chips, your LP siding should come with a touch-up kit to fix imperfections. Pre-finished LP typically needs painting every 5-10 years. You should use high-quality exterior paint and proper painting practices. You can also apply a clear sealant for extra protection.

Final Thoughts

Now that you know all there is to LP siding, you can safely decide if it's your best option! As long as you install it properly by hiring a qualified contractor, you can enjoy the many benefits of this expertly engineered wood. (Related article: Vinyl Siding Cost And Consumer Guide)

About the Author

I can build it, and I can help you get the patio enclosure you want! I got my start in the Florida patio industry back in the 70s as a young general laborer looking for something to make a few bucks. At the time I never thought it would end up as my career. Over the years I grew beyond the laborer position, becoming a foreman, superintendent, and then into executive management for some of the largest patio contractors, and material vendors. Now into retirement and slightly bored, I offer consulting services to new and existing contractors, and publish this website to help the people who love their patio's and screen enclosures the most - YOU!

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