installing Hardie Plank fiber cement siding in the rain in Portland or Vancouver metro?

September 18, 2011 by Superior Exterior Systems Experts Leave a reply »

People often ask me if Hardie Plank fiber cement siding  can be installed in the rain.  First let me say that Superior exterior Systems is a completely independent siding contractor with no affiliations with any manufacture other than installing their products.  I can honestly say that over the years we have consistently installed more residential  Hardie PLank siding than anything else.  The local supply houses who stock Hardie siding have told me that year after year.  So can hardie Plank be installed in the rain?  The answer is yes if done properly.  If you have Lp panel style siding that  is getting soft at the bottom drip edge or around windows,  the question is do you want to leave that on another rainy season with potentially more expensive damage happening underneath?   If you have panel style, take 10 minutes and walk around your house and gently pull up every 12-16 inches or so along the bottom.  If you have a 2 story, see if the drip edge at the bottom of the 2nd story is swelling.  Take a crew driver and gently poke around the bottom corners of the windows. The south and west sides usually take most of the abuse so make sure to check those areas well.  If you have sprinklers check the siding where the sprinkler water  hits the house as this excellerates any wood decaying.  Heres the problem: panel Lp siding or ANY panel style siding (4 x 8 sheets) never has a moisture barrier.  It is nailed up directly over your studs.   Hardie can be installed in the rain.  Siding companies generally  give more competitive pricing to keep business flowing during the rainy season.  Hardie Plank comes covered with waterproof plastic put on at the factory because the back side of Hardie isn’t primed so that section should stay protected.  All 4 edges and the surface is primed to protect from the rain.  Superior Exterior Systems sprays an industrial strength fungicide on your wood as a mold inhibitor which also kills carpenter ants & termites.  I know of  no other company that uses this specific fungicide.  The fact is that if your house is completely dry and is sided during summer, we will still wet it since the fungicide is a powder and water is the carrier to spread the powder so that it can impregnate the wood.  If you are removing panel Lp siding, extra care needs to be taken so that your insulation doesn’t get wet.  Fiber cement is made for all climates so can be installed during the rainy season.  It is by far  the most common siding used here in the Portland - Vancouver metro. Look up my past blogs on Hardie Plank and its competitor Certainteed Weatherboards for more info on fiber cement siding. For pics and more technical info on your options log into or simply call us at (503)285-0875 or (360) 687-8936.


6 Responses

  1. John Thompson says:

    this company did a GREAT job replacing my siding and did it in the rain. They used this fancy rainscreen system too.

  2. patti saunders says:

    Superior Exterior Systems recently installed Hardi plank on my home and had a bit of bad weather. There workers were courteous and respected my property.

  3. it was a pleasure working on both John & Pattis homes. Thanks again or your business & trust.

  4. Carol Watkins says:

    Working with this company was easy. Our bid was very clear about the products provided and the installation process. Pricing was competetive in the market place however this company included the hidden costs the other bids excluded. Possible problems were identified and any extra costs were explained up front. During installation, our daily lives were not interupted. Tear down occurred quickly, crews cleaned up daily not leaving euqipment or product laying around the house. The workers worked diligently completing this project ahead of schedule. Communication with the project foreman was an open dialog and very comfortable. Thank you Superior for a job WELL DONE!

  5. Thanks Carol. Is what a pleasure working on your home. I’m glad we exceeded your expectations.


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