Business Advice2 min

Efflorescence and How It Affects Siding

Efflorescence is a fact of life with most types of concrete, stucco and masonry. Each of these materials is very porous and will absorb any moisture they come in contact with. Efflorescence has been a problem for fiber cement siding manufacturers for many years. Unlike fiber cement, engineered wood siding will not effloresce.

On a home, efflorescence occurs when fiber cement siding absorbs moisture – whether from being uncovered prior to installation or from excess moisture entering through the back side of the substrate. Once inside, the water dissolves salts and other minerals in the substrate. When siding is heated by the sun, that water is slowly drawn out and the salts are carried to the surface. As the moisture evaporates, the salts are left behind as a powdery white substance on the surface of siding.

Removal of Efflorescence

The white salt deposits caused by efflorescence do not affect the structural performance of siding, but they can seriously detract from its aesthetic appeal. Removal of efflorescence is time-consuming and labor-intensive. Manufacturers recommend pressure-washing or an acid wash applied to the surface of the siding to dissolve the mineral deposits. However, care must be taken when using acid products, and in some cases it may be necessary to repeat the process to completely remove the efflorescence.

Engineered Wood Siding Does Not Effloresce

LP® SmartSide® engineered wood siding will not effloresce, so you never have to worry about an unsightly residue discoloring the exterior of a home. Unlike fiber cement and vinyl siding, LP SmartSide lap siding also features defining shadow lines and a realistic, deep cedar-grain texture that creates the look of real wood. It’s an excellent choice for homeowners who want beautiful curb appeal and easy maintenance.

Visit to find more information about trim and siding products, or locate a retailer or remodeler in your area.

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Business Advice4 min

What’s Behind the Walls: Tips for Selling Long-Term Home Value

The initial conversations with new homebuyers generally focus on architectural style, price per square foot and aesthetic requirements (like the dream kitchen island!). Discussing the structural details that determine the value of your home often happen while poring over blueprints. Here are some tips for having a conversation with your clients to help them understand the importance of investing in the part of their home that’s never seen.

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Renovation6 min
How to Repair or Replace Rotted Siding

In this guide from LP® SmartSide® Trim & Siding, you’ll learn how to replace rotted siding on a house and how to repair rotted wood siding, depending on the severity of your client’s current siding’s damage. With these simple tips, you’ll be able to spot damage and recommend new products that will help your clients enjoy their home’s new exterior look.

News & Stories5 min
Using APA Structural I Rated Sheathing: Building With LP Structural Solutions for Added Strength

When the build requires greater strength, look for an OSB roof and wall sheathing that is APA Structural I Rated Sheathing—also known as Struc I—for increased structural reliability. What is APA rated sheathing? This valuable designation is a “stamp of approval” that verifies the panels have passed APA’s manufacturing and performance standards.

News & Stories6 min
Resilient Rebuilding: How to Rebuild After a Natural Disaster

If the need for rebuilding and repairing property damage arises, designing structures that can withstand future weather events is crucial. Rebuilding with sustainable materials also contributes to the well-being of the area that has been damaged. Let’s dig into resilient rebuilding, from structural elements to siding, and why it’s more important than ever.