Regular periodic inspections of your deck, screened porch, pergola or other outdoor living structure area are a must. At least once a year if not every six months, you should do a thorough analysis of its current condition. Decks, screened porches, pergolas and other outdoor structures are exposed to the environment from many sides. Other than a screened porch’s roof, these structures usually absorb ultraviolet rays, wind, rain, ice, sleet and snow from a multitude of directions. These elements all play a role in deterioration at a rate much higher than that of an encapsulated structure such as a house. With the safety of you, your family, and anyone in proximity at hand, simple checkpoint inspections are necessary.
Protect your family and friends.
Get a once-a-year deck inspection by a qualified professional.
Related News, Articles, and Info:
Deck Inspections – A Matter of Life and Death
Who Is Qualified To Inspect Your Deck?
“Manual For the Inspection of Residential Wood Decks and Balconies”
“Summer Issue 2006 – Wood Design Focus – Deck Design and Construction”
providing supplemental information to the “Manual for the Inspection of Residential Wood Decks and Balconies”
Early spring is usually the best time to do a complete diagnostics check of your deck. In many areas, winter can be especially hard and do the most damage to a deck’s integrity. Spring is also when activity on the deck begins to liven up.
Because of the Midwestern harsh and extreme seasonal changes, I know first hand that decks in Kansas City need regular checkups. This spring I went out to check out the status of my deck. I definitely needed to. My deck is about 15 feet above grade. It is all Southern Pine which requires more maintenance that man made composites and exotic hardwoods. My son was about 18 months old. As most boys that age, he was starting to explore wherever he could. He would climb on anything low enough to leverage himself up on. He would push, pull and test the strength of everything he could wrap his curious little hands around. I noticed a couple of conditions which made my deck very unsafe.
One was the guardrail. It was built to code at 36 ½” above decking surface. When built, my wife and I wanted it at minimum height so we could take full advantage of the sitting view behind our home. Now that scenic country view had taken a back seat to our child’s safety. He could easily scale any of the patio chairs and go over the railing. Therefore, I fabricated a new section of guardrail onto the existing making it seven and a half inches higher than before.
I also noticed many of the wooden two by two spindles were coming loose, cracked or both. I replaced any that looked the slightest bit questionable. A very small price to pay considering each one protects the life of our young son. It may sound melodramatic, but it’s absolutely the truth. If your deck or screened porch is of considerable height from the ground, pay close attention to each and every baluster (spindle). It only takes one unsecure spindle to create enough of an opening for a small child to fall through.
* Many deck builders install wood or composite balusters with nails only. THIS IS NOT ACCEPTABLE !
The 2003 IRC (International Residential Code) applied to all decks and screened porches states that “railings and guardrails may not rely on nail withdraw to meet the two hundred pound minimum lateral force requirement.” This means that your railings must be able to withstand two hundred pounds of force pushing against them. Toe nails (or angled nails) into the railing’s framework can produce necessary load requirements because they are not relying on straight nail withdraw. By toe nailing, the pressure put on the nail is against the shank. Each sixteen penny nail has at least one hundred pounds of shear strength. However, a nailed baluster is not toe nailed. It is driven straight (horizontally) to the framework. This means all outward pressure is put solely on that nail’s withdraw resistance. Therefore, screws must be used for fastening balusters to guardrails and stair rails because the have deep threads which provide much greater holding power than nails. Ring shank and screw shank nails are not an acceptable substitute for screws in this application!
Aluminum, glass, iron and other railing spindles may use a bored cradle or installed between pieces of framework which is also acceptable. Some deck builders will install balusters with a pneumatic nail gun and then go back and add screws to each one. This is acceptable as long as there’s at least one screw in the top and one in the bottom and that screw has at least one inch of embedment. I digress.
Bottom line, look at your deck, screened porch or arbor structure carefully and regularly. Safety should never be jeopardized because of complacency. NADRA (North American Deck and Railing Association) has a National Deck Safety Program and has declared May as “Deck Safety Month.”
Hope this helps,
Dan Milford (DW Elite Decks - Kansas City deck builder)