{"id":78,"date":"2011-03-20T22:32:07","date_gmt":"2011-03-20T22:32:07","guid":{"rendered":"http:\/\/napervillehardwood.com\/blog\/?p=78"},"modified":"2026-01-07T04:51:47","modified_gmt":"2026-01-07T04:51:47","slug":"what-is-this-trio-hardwood-floor-sanding-machine","status":"publish","type":"post","link":"https:\/\/napervillehardwood.com\/blog\/what-is-this-trio-hardwood-floor-sanding-machine\/","title":{"rendered":"TRIO Sanding Machine for Flat Floors"},"content":{"rendered":"

I\u2019d like to introduce you to one of our secret weapon\u2019s that plays a huge part in allowing us to provide clean, flat and beautifully finished hardwood floors for our Naperville clients.<\/p>\n

It\u2019s the specialized hardwood floor sanding machine pictured below \u2013 the TRIO.<\/p>\n

\"TRIO<\/p>\n

One of the common questions we get when we unload the TRIO is: What is that? It is a weird looking contraption. It kind of looks like a funny vacuum cleaner, especially with all the hoses attached.<\/p>\n

And in fact a big part of it is a vacuum system \u2013 we\u2019ll come back to that in a moment though.<\/p>\n

<\/p>\n

 <\/p>\n

First \u2013 What Is This Thing Used For?<\/h4>\n

Well it\u2019s a specialized hardwood floor sanding machine used to get floors extremely smooth and flat.<\/p>\n

Most hardwood floor refinishing businesses in Naperville, IL use a few different sanding machines to restore floors. Each have their place in the sanding sequence.<\/p>\n

First, there\u2019s the big belt sanding machine that removes the existing finish to take the hardwood floors back to bare wood…<\/p>\n

\"Belt<\/p>\n

The next common sander is the small edger which is used around the edges of the floor up to the walls…<\/p>\n

\"Edger<\/p>\n

After a few cuts with both of these machines, the third common machine used is a buffer. This is used to blend the very different sanding patterns of the first two machines together and preps the floor for coating…<\/p>\n

\"Buffer<\/p>\n

This system \u2013 with these 3 machines \u2013 is the most popular way to refinish hardwood floors in Naperville.<\/p>\n

One problem we have found with this system is that the last section \u2013 the buffing process \u2013 can easily dish out the grain of the wood, resulting in not very flat floors.<\/p>\n

Now just to be clear, flat and level are two completely different things. If your floor is not level, there is not much a hardwood floor refinisher can do as we only take off a very minimal amount of wood from the surface.<\/p>\n

But flat floors can<\/i> be achieved if the right methods and tools are utilized.<\/p>\n

Nothing bugs us more than a newly refinished hardwood floor that looks like a wavy ocean when you see it looking into the light. As mentioned above this is commonly caused by the buffer. As the buffer rotates across the floor it sands different parts of the wood in different ways. The hard grain in the individual plank or piece of wood stands up well to being sanded this way, while the softer parts of the wood are sanded more aggressively. As more soft wood is removed it causes a wave effect. As professionals we call this unwanted result \u201cdish-out\u201d.<\/p>\n

When you have parquet floors, dish-out is even more noticeable as there are many more pieces of wood in the floor. In the photo below (not a floor we sanded), you can see a lot of dish-out…<\/p>\n

\"Waves<\/p>\n

Dish-out is ugly, unnecessary and results in a far less than professional look.<\/p>\n

Here is another close-up photo of dish-out of the soft wood…<\/p>\n

\"Dish<\/p>\n

Because of the above reasons, we decided to scrap the common buffer for this step and instead invest in a far, far better piece of equipment that provides much better results.<\/p>\n

When it comes to guaranteeing flat floors, the TRIO really shines.<\/p>\n

Instead of one big single sanding pad that easily causes dish-out, the TRIO has 3 smaller pads that rotate separately and much more evenly across the floor.<\/p>\n

\"Trio<\/p>\n

This results in an extremely flat surface that looks great once finished. And when you look into the light, you won\u2019t be made to feel sea sick because of all the waves.<\/p>\n

After the first passes with the belt sander and edger, we fire this puppy up and do two final cuts. This takes quite a bit of extra time as it\u2019s not a fast process, but we feel the much better results are definitely worth the extra time and effort.<\/p>\n

\"TRIO<\/p>\n

You can see the end results of using the TRIO in the photo below. Notice how flat the floor is \u2013 even though it\u2019s not perfectly level (which is impossible)…<\/p>\n

\"Flat<\/p>\n

In the photo, you can clearly see the different types of grain \u2013 the dark and light areas \u2013 in the wood. With a normal buffing machine, these areas would have noticeable dish-out. But as you can clearly see above, the TRIO eliminates this unwanted effect. Instead you\u2019re left with a great looking, wonderfully flat and smooth floor.<\/p>\n

 <\/p>\n

Other Benefits of the TRIO\u2026<\/h4>\n

Another great feature of this sander is that it can be used on floors that the other machines might not want to be put on\u2026 like cork flooring and certain types of engineered floors.<\/p>\n

It also is amazing at prepping floors that are going to be stained. One of the most common things you will see on a stained floor is edger marks that haven\u2019t been completely removed. These are easily noticeable once stained and they will be in your floors forever, constantly annoying you…<\/p>\n

\"Sanding<\/p>\n

This happens because the edger leaves circular swirl marks in the wood close to the walls where the straight cut sanding pattern of the belt sander can\u2019t reach. Most hardwood floor refinishing companies in Naperville will attempt to blend these completely different sanding patterns with the buffer but if a hand sander is not used, the results can be somewhat lacking.<\/p>\n

With the TRIO, these sanding marks are always removed. In fact the TRIO can get within a \u00bc inch from the wall. Plus the sanding pattern is the same across the entire floor, leaving a perfect canvas for stain to be applied. (You can read about the steps of staining<\/a> in detail here.)<\/p>\n

 <\/p>\n

What About It\u2019s Dustless Capabilities?<\/h4>\n

Now at the start of the article we talked about how some people mistake it for a weird looking vacuum. In fact it does have a vacuum built into it that works astonishingly well for built-in dust collection. This is another great leap in technology over the average buffer which is by far the biggest culprit that causes dust. The average buffer (without any type of skirt) will cause clouds of dust within minutes of starting to buff.<\/p>\n

Not exactly what you want to happen to your home.<\/p>\n

We\u2019ve modified our TRIO a bit to make it even better in the dustless area.<\/p>\n

\"TRIO<\/p>\n

In the above photo you can easily see the vacuum hoses running from the machine. These connect to a more powerful vacuum system we utilize. Now instead of having to empty the bag often, we can run it continuously and ensure your house is left virtually dust free. A much appreciated bonus for our clients.<\/p>\n

 <\/p>\n

In Conclusion<\/h4>\n

So hopefully this gives you a little insight into this funny looking machine you\u2019ll see us using in your home and why we love it so much.<\/p>\n

Here’s another photo of a perfectly flat floor that we are able to obtain with this sander…<\/p>\n

\"Super<\/p>\n

We love restoring floors and we\u2019re constantly looking for ways and equipment that will help us do our job \u2013 making your hardwood floor restorations as close to perfect as humanly possible. The TRIO is a winner all the way around for your floors.<\/p>\n

If you\u2019re interested in seeing it in action, make sure you ask us when we\u2019re refinishing the hardwood floors in your home.<\/p>\n

–<\/p>\n

Updated Jan 2026<\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

Hardwood floor refinishing in Naperville with a TRIO sanding machine. This is how achive those super flat floors…<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"TRIO Sanding Machine for Flat Floors","_seopress_titles_desc":"Hardwood floor refinishing in Naperville with a TRIO sanding machine. This is how achive those super flat floors...","_seopress_robots_index":"","footnotes":""},"categories":[7],"tags":[],"class_list":["post-78","post","type-post","status-publish","format-standard","hentry","category-news"],"_links":{"self":[{"href":"https:\/\/napervillehardwood.com\/blog\/wp-json\/wp\/v2\/posts\/78","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/napervillehardwood.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/napervillehardwood.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/napervillehardwood.com\/blog\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/napervillehardwood.com\/blog\/wp-json\/wp\/v2\/comments?post=78"}],"version-history":[{"count":0,"href":"https:\/\/napervillehardwood.com\/blog\/wp-json\/wp\/v2\/posts\/78\/revisions"}],"wp:attachment":[{"href":"https:\/\/napervillehardwood.com\/blog\/wp-json\/wp\/v2\/media?parent=78"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/napervillehardwood.com\/blog\/wp-json\/wp\/v2\/categories?post=78"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/napervillehardwood.com\/blog\/wp-json\/wp\/v2\/tags?post=78"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}