What Happens If You Don’t Sand Between Coats Of Polyurethane. Useful Article For You

You are interested in collecting some tips to refinish wood furniture properly and want to untangle the heated question “What Happens If You Don’t Sand Between Coats Of Polyurethane?”on many homing forums recently? If so, it’s time to place a stop to your curiosity with our blog. Check it out now!

How Many Coats Of Polyurethane Should You Put On?

To address this topic today thoughtfully, you first need to capture the basic rule of the number of polyurethane layers.  

To meet the protective feature, the required number of layers is at least two. Still, hard floors or other material ground that will be occasional moisture or abraded should reach approximately three layers.  

So, is it good if you apply many layers of polyurethane?

In general, applying over three coats of polyurethane doesn’t work too much. It is truly not recommended or needed. 

When putting many layers, polyurethane is prone to be gloopy and thick. As a result, the durability feature would completely not stay on it, and your poly layers are prone to peel at ease.

Tarnish is also quite high as you put a lot of coats of polyurethane. It’s hard for you to find out your surface begins to stain faster than normal, especially when you utilize oil-based poly.

what happens if you don't sand between coats of polyurethane

What Happens If You Don’t Sand Between Coats Of Polyurethane

Frankly speaking, the answer is likely nothing much. However, you have to put each layer of the finish within an adequate amount of time. If you find brush marks or dust nibs on the finish, sanding manipulation will burnish them, and then your following coat would look better with a smooth surface.  

Well, keep reading with us to know the root of this issue.

Do You Need to Sand Between Coats When Applying Polyurethane On? 

There is a truth that the protective material varnish poly isn’t hard to peel. Covering your furniture with some good layers of protective poly and sand between these coats properly is a wise way to extend their lifespan. Spend your valuable time, as the profession does, then you will have a lasting, smooth, and durable finish for your wood furniture.

What Happens If You Apply Polyurethane Without Sanding? 

Sanding is truly an indispensable period in the woodworking process. Nevertheless, various woodworking enthusiasts and DIYers (do it yourself) can carry out this period for different reasons and ways. It might be scuffed for a staining project or make it smooth for the surface. So what happens if you apply polyurethane without sanding?

Here, we emphasize again that “Don’t sand between coats of polyurethane doesn’t have a remarkable effect on the finish”. 

If you are struggling to work on a tight timeline, you might assume that the sanding process is taking more time. In this case, you can put relatively thin coats of poly to the surface, and don’t forget to leave it around six hours to harden before putting the next layer, but don’t skip the sand stage to have an ideal product at the final phase. 

So how to sand polyurethane properly between coats? Follow us to reach the right way with a compact guide. 

First Layer

When you put the first layer of poly, you need to thin it down with approximately half of its capacity of diluent. It will help permit the finish to dry out relatively quickly, so you could sand the exterior sooner.

It would be best if you let them cure in 24 hours before the next stage – utilize abrasive sanding along with the grain of its surface. Then, take that sanding dust out first by using a duster and a cloth (tack material). 

In-between layer

Now, it’s time to put 2 -3 additional layers of high-strength poly and carry out sanding between each layer. When applying poly, don’t forget to brush along with the grain and extend the poly to turn it into a thin layer as fine as possible. 

Also, you need to permit poly to harden approximately 24 – 48 hours before applying the sand process. It will offer the exterior enough time to dry and cure. 

If you allow the second coat of polyurethane without sanding to stay on your home furniture,  it seems likely that the finish would not be perfect for aesthetics as you wish.  

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Final layer 

Note that you don’t need to sand the final coat of poly varnish. You just need to let it dry and put some protective wax (for specific furniture products, like paste wax) on it.

Final Says 

If you are here with us until this part, we assure you already reached an adequate answer to the topic “what happens if you don’t sand between coats of polyurethane?” and get more handy knowledge about refinishing your home furniture!

Thank you for reading, and don’t forget to share this content with those who have the same curiosity as you.

Reference source: Sanding Between Topcoats – Getting a SMOOTH Finish

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