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Do You Need An Alibi?

October 4, 2011 by Howard Leave a Comment

Cross posted from Howard Brickman's column in Hardwood Floors Magazine: Inspector Blog.

Only a guilty man needs to have an alibi prepared. Well, you are all guilty of being wood floor guys, so let’s get those alibis ready for prime time. And maybe the process of getting those alibis prepped will also provide a framework for preventing the need for an alibi.

Tool/Equipment List:

  • smartphone with camera
  • pin-type moisture meter
  • black Sharpie Marker
  • hammer
  • 6d and 8d finish nails
  • thermohygrometer
  • flashlight
  • spiral notebook
  • pencils and pens
  • string (fluorescent red, blue, green, or yellow)

Stuff To Do (or Not Do):

BEFORE WOOD FLOORING DELIVERY:

  • Do not sign a confession, err, I mean contract provided by the general contractor without carefully reviewing the provisions regarding warranties and terms of payment.
  • Check moisture content (MC) of the subfloor and inspect the crawl space. Use the Sharpie to write the MC readings directly on the subfloor with the date and your initials. Check MC near windows, plumbing, and doors, and by obvious signs of water staining or moisture intrusions. More readings are better. Record the readings in your notebook.
  • Make a label that lists the date, job address, and your name in large block letters for identifying pictures.
  • Take pictures of the high-MC readings with your smartphone. It will automatically time, date, and location-stamp the individual photos.
  • Take pictures of other non-compliant issues (e.g., missing windows or doors, tile saws on subfloor, unvented torpedo gas/kerosene heaters, etc.)
  • Check MC of joists and subfloor in basement and crawl space. Look for water, mold, and mildew, and take pictures.
  • Politely request that the GC or building owner correct any problems noted in a brief and concise e-mail (or using another method that documents the content and delivery of the request).

AFTER WOOD FLOORING DELIVERY:

  • Check subfloor MC again and verify the any problems observed during previous visits were corrected. If not, document them again.
  • Check wood flooring MC on at least 40 boards. Use the Sharpie to write MC and date on the back of boards. Record the readings in your notebook. Reject the flooring if it is outside the range from 6% to 9% MC.

BEFORE INSTALLING THE FLOORING:

  • Verify that you document everything that could negatively impact the wood floor. Use the list from the NWFA Installation Guidelines (the PDF is available free online for all NWFA members).
  • Communicate one last time to the GC if there are any issues. This is the point at which you need to present your disclaimer or waiver document for the GC to sign or at least acknowledge. This can be a delicate time in the job. You may want to tread lightly, because there is a fine line between being a concerned wood floor professional and being a pain in the neck who aggravates everyone else on the job, especially the GC. You know the deal. There are 10 flooring guys waiting on the sidewalk to come in and do the work without even “noticing” the all of the potential problems.
  • If you are called to help out a GC at the “last minute,” take a deep breath and try to figure out why the other floor guy that has been doing his work for the past three years is not available. Is there a money issue? Or what?
  • If you are installing a nail-down solid floor, there are some critical steps that help to inoculate you from problems during an inspection: 1) fasteners every 6”; 2) #15 asphalt-saturated felt; 3) Expansion space around the perimeter of the floor.

The typical inspector will check MC, expansion space, nailing, and will want to see your documentation. If you have done due diligence with your prep work, the chances of a job going South are greatly reduced. If it goes South, you should be certain that a really qualified person performs the inspection. The same qualities that make you a competent craftsman apply to the inspection craft: experience in the wood floor craft, experience in performing inspections, referrals from really knowledgeable people in the industry, and the proper temperament to stand up to the pressure from all of the associated parties. In addition to doing everything right, you have to be able to prove that you did everything right. Here’s to hoping that you never need that alibi. Good fortune favors the well prepared.

Filed Under: Blog Tagged With: Crawl Space, Hardwood Floors Magazine, Joists, Kerosene Heaters, Moisture Content, Moisture Meter, Mold, Pin Type, Spiral Notebook, Subfloor, Tile Saws, Tools Of The Trade, Wood Floor, Wood Flooring

Are You Whimpering?

July 11, 2011 by Howard

Cross posted from Howard Brickman's article on Hardwood Floors Magazine: Inspector Blog.

“Sir, we clocked you installing a wood floor on a high moisture content subfloor. May I see your documentation on moisture content of the subfloor?”

You whimper, “But officer, it looked dry to me.”

This is the wood floor guy equivalent of getting bagged with the radar gun going 50 in the 30 mph speed zone. So, how do you protect yourself? Get a radar detector. It’s called a moisture meter. Here are the step by step instructions.

-Buy a proper moisture meter.
-Use the moisture meter.
-Learn how to take the right amount of moisture tests.
-Learn how to properly use your proper moisture meter.
-Take your proper moisture meter everywhere you go.

Now let’s break it down.

– Buy a proper moisture meter: I use the Delmhorst J-4 or BD-10 electrical resistance (pin type) meters and also keep a Moisture Content Standard (also sold by Delmhorst) to check the meter for accuracy every time I use it. I am not familiar with all of the other moisture meters currently available. And Mom used to say if you can’t say something nice, then don’t say anything.

– Use the moisture meter: Check every place where there could possibly be some excessive moisture, including near exterior doors and windows, plumbing, tile wet saw, masonry and plaster mixing locations. It is not the average of the MC readings that damages flooring, it is high MC locations. Your options are to dry or replace the wet subfloor.

– Learn how to take the right amount of moisture tests. You can probably stop when you get to 50 tests in 1500’. Even on small jobs you should take at least 15 readings. Another hint: Write the date, MC, and your initials on the subfloor with a black Sharpie. Test the flooring on the bottom face and also write the test results on the pieces of flooring. If the floor has to be replaced you will have the documentation there for the world to see. It is also a great idea to record these MC readings on the work order or flooring delivery ticket or other job related paperwork that can be tucked away in the job file.

– Learn how to properly use your proper moisture meter: What does the MC number mean? Learn what “normal” MC in subflooring and flooring is for your part of the world during different times of the year by testing existing houses. Get in the habit of constantly checking your own house. Push those pins to the full ¼”/ 5/16” depth and orient the pins with the longitudinal axis of the grain (with the grain). And what does variance of the number mean? If the MC varies by more than 1% there is something changing in the building. The greater the variance, the more substantial the changes that are in progress.

– Take your proper moisture meter everywhere you go. Please…. Pretty please with sugar on it…

The best source for information on moisture meters is our friends at the Forest Products Laboratory. One of my favorites is FPL-08 Electric Moisture Meters for Wood by William James. And you can download a copy from the FPL web site.

And remember the magic words: shrink and swell.

Filed Under: Blog, Hardwood Floors Magazine: Inspector Blog Tagged With: Delmhorst, Electrical Resistance, Hardwood Floors Magazine, Masonry, Moisture Content, Moisture Meter, Moisture Testing, Pin Type, Wood Floor

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