Home Inspector Shares Clues on How to Recognize LP Siding Problems

Our topic today is LP Siding Problems. So we’re here in a house, and we’re looking at what is generically known as composite wood siding more commonly known as LP siding.

LP siding has been in the news a lot over the last several years because there have some problems with this type of siding, where it’s not performing the way that they intended.

Some people had some pretty hefty bills to replace their LP siding panels, and in some cases repair damage that occurred behind the siding.

The components of this siding system are a wood chips sawdust, in glue mix that is extruded under pressure and a grain pattern is created.

Sometimes what happens if the siding is not properly painted, nor properly maintained, is that those wood chips can start to absorb water.

If so, they start to swell.

You look here just by adding a line here that’s some wood chips swelling.

Right next to that is some more swelling. If you look over here, and a little to the right. Here you can see some more.

The problem may be due to the use of a poor quality caulking material.

If you’ve got this kind of siding on your home, this could be an early indication that you might soon have some siding failure happen.

It could be it extremely expensive to replace the siding, and extremely expensive to repair damage that occurs behind the siding.

However, if you don’t jump on this soon enough, and take care of it real quick the problem can be stopped by proper treatment.

So there are a few little clues to the presence of LP Sliding problems you should look for, if you’ve got this kinda siding:

  1. LP siding is not very tolerant of being ignored
  2. Swelling as seen in the video is one of the early signs that may be the siding hasn’t been well maintained.
  3. So, keep your keep your eyes on your siding stay on, keep on top of siding inspection and maintenance.

Hopefully, you can avoid this kind of problem down the road just by careful inspections and maintenance whenever the first signs of siding plank swelling appears.

Further comments on this problem might be:

It may be better in the long run to install cedar or regular wood siding and painting them with good quality exterior paint.

The biggest cause of water intrusion and rotting is a failure of the caulk. If the caulk fails LP sidings will fail fast, form the effects of normal expansion and contraction. The box on the video had a line of caulk on the top that had separated. They possibly should have used a more sturdy mount box or inserted a Tamlyn horizontal z-bar over it. This is quite commonly done with windows to prevent that mess.

LP can swell badly at the butts-ends over time. Also the nails can be sucked in after swelling, leading to additional openings for moisture to enter, even more rapidly as time goes by.

What Other Websites are Saying About LP Siding Problems

We found that there are other references online to LP siding problems. LP siding was predisposed to fungus growth from its initial manufacturing. The wood used in the siding itself was developed with a dormant fungus already living within it. It is also nearly impossible to completely seal LP siding at the time of installation. Because of this, water is able to “wick” around the edges and under the bottom of LP siding into the unsealed wood – causing it to become moist and often waterlogged. Warm weather (or even a warm interior temperature) activates the growth of the dormant fungus already in the wood. As the fungus grows, it forces the LP siding apart, creates de-lamination, and even attacks nails and studs. If left untreated, mushrooms will begin to grow on the siding. If this happens, the damage to your siding is very serious and in need of immediate replacement.

First, you’ll need to decide if you want to tear off your LP siding or leave it on. Full LP siding removal is the best way to ensure complete eradication of and fungus. You should always remove lap or board siding – since this siding is most likely to damage the substructures of your home. However, if you have 4 x 8 sheets of LP siding – leave them on. The affected sections (usually the bottoms) will need to be cut off and replaced and the substructure should be treated with a fungicide to prevent future growth. We make sure to treat your home with a fungicide regardless of if you choose to fully or partially replace your LP siding. We’ll also properly seal your home before any new installations to provide additional protection against air and water infiltration.

The Louisiana Pacific Siding problems pretty much all lead back to the fact that Louisiana Pacific Siding was not sealing well when it was put up. The edges were highly susceptible to water, and thus allowed the product to take on water rather easily. The areas that leaked most were the bottom of the siding and around the edges and seams. Water is the natural enemy of siding when it is not properly resistant because the structures underneath are not water friendly at all. This can literally undermine the structure as a whole.

Once water soaked into the wood and moistened it, it was only a matter of time before the wood was bogged down with water and heavy. Fungus would then begin to grow and slowly undermine the structures bit by bit. via Docslide.us

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