Welcome to the Ultimate Guide: Which Side of Underlayment Goes Up?

Are you embarking on a flooring project and find yourself wondering about the puzzling aspects of underlayment installation? Look no further, because we’ve got you covered! In this comprehensive blog post, we’ll delve deep into the world of underlayment, answering all your burning questions. From which side of underlayment goes up to the best fastening methods, we’ll leave no stone unturned.

Covering popular concerns like subfloor orientation, plywood quality, and fastening techniques, we’ll provide you with the tips and tricks you need for a successful underlayment installation. So, let’s get started on this journey of clarity and expertise, and have your floors looking fabulous in no time!


Keywords: subfloor orientation, plywood quality, fastening techniques, underlayment installation, flooring project

What Side Of Underlayment Faces Up

What Side of Underlayment Faces Up

When it comes to installing underlayment, one of the most common questions homeowners have is: what side of underlayment faces up? It might seem like a trivial matter, but getting it wrong can have a big impact on the performance of your flooring. So, let’s dive in and find out the correct way to install underlayment!

The Perplexing Predicament of Underlayment Orientation

Installing underlayment is like solving a puzzle – you want to make sure everything fits together perfectly. But fear not, dear reader! I’m here to guide you through the perplexing predicament of underlayment orientation.

Smooth Side vs. Rough Side: The Ultimate Face-Off

Picture this: you’re holding a sheet of underlayment in your hands, pondering which side should face up. It’s like a face-off between the smooth side and the rough side. But who will emerge victorious? Let’s find out!

Smooth Side: The Silent Hero

Ah, the smooth side – the unsung hero of underlayment. This side is designed to provide a level surface for your flooring, allowing it to glide effortlessly across the room. It’s like the smooth talker who always knows how to charm everyone in the room. But remember, appearances can be deceiving!

Rough Side: The Gritty Grip

And then we have the rough side – the gritty grip that holds everything together. This side is like your trusty sidekick, ensuring that your flooring stays in place. It provides traction, preventing any unwanted sliding or shifting. It’s like the loyal best friend who’s always got your back, no matter what.

So, Which Side Should Face Up

Now that we’ve introduced the contenders, it’s time to reveal the winner! Drumroll, please…both sides can face up! Yes, you heard that right. The orientation of your underlayment depends on the type you’re using.

If you’re using felt underlayment, the smooth side should face up to provide a smooth surface for your flooring. On the other hand, if you’re using foam or cork underlayment, it doesn’t matter which side faces up. The choice is yours, my friend!

The Golden Rule of Underlayment Installation

While the orientation of underlayment may seem like a riddle, there’s one golden rule you should always follow: ensure that the seams of the underlayment are properly overlapped and sealed. This will prevent any moisture from seeping through, protecting your precious flooring from potential damage.

Wrapping Up the Underlayment Upside-Down Dilemma

Now that you know the ins and outs of underlayment orientation, you can confidently tackle your next flooring project. Remember, the smooth side provides a level surface, while the rough side adds grip. And always prioritize proper seam overlap and sealing – it’s the key to a successful installation!

So, go forth, brave DIYers, and conquer the underlayment upside-down dilemma like the flooring wizards you are! Your beautifully installed floors will be the envy of all your friends. Trust me, I’ve got the underlayment inside scoop.

P.S. If you still need a bit of guidance, don’t hesitate to consult the manufacturer’s instructions for your specific underlayment type. And always remember, laughter is the best underlayment for a happy home!

What Side Of Underlayment Faces Up

FAQ: What Side of Underlayment Faces Up

Should Subfloor Be Parallel or Perpendicular?

When it comes to laying a subfloor, the general rule of thumb is to place it perpendicular to the floor joists. This ensures better structural stability and prevents sagging. So, forget about going parallel with the subfloor and go perpendicular, like a true rebel!

Which Side of Plywood Is the Good Side?

Ah, the eternal question of plywood. The good news is that both sides have their merits. However, for aesthetic purposes, it’s recommended to have the “good side” facing up. You know, just in case your floor decides to host an impromptu fashion show.

How Do You Fasten Particle Board Underlayment?

To fasten particle board underlayment, you can use screws or nails. Make sure to place them every 6 to 8 inches around the edges and every 10 to 12 inches in the field. Just remember not to go overboard with the fastening, unless you’re trying to create the world’s first underlayment art installation.

What Kind of Nails Do You Use for Underlayment?

For underlayment, it’s best to use ring-shank nails. They provide better grip and reduce the risk of the underlayment loosening over time. So, let’s give a round of applause to these nails for holding everything together, just like they hold our hopes and dreams.

How Do You Screw Underlayment to Subfloor?

Screwing underlayment to the subfloor is as easy as pie. Just grab your trusty power drill, use screws that are specifically designed for this purpose, and drive them into the subfloor at regular intervals. It’s like giving the subfloor a gentle hug, keeping it secure and snug.

Is OSB Board Directional?

No, OSB (Oriented Strand Board) is not directional. It means you can install it in any direction you fancy – whether it’s horizontal, vertical, or even diagonal if you’re feeling adventurous. OSB is the chameleon of the building world, adapting to your every design whim.

Which Way Do You Lay a Subfloor?

When laying a subfloor, remember to channel your inner compass and go perpendicular to the floor joists. This ensures maximum strength and structural integrity. So, embrace your inner navigator and let your subfloor set the course for a solid foundation.

Does Moisture Barrier Go Up or Down?

The moisture barrier is like your floor’s personal superhero, protecting it from the evil forces of moisture. To ensure it does its job effectively, make sure to place the moisture barrier with its shiny side facing up. That way, it can reflect moisture away and save your floor from potential danger. Up, up, and away, moisture!

Which Side Goes Up on OSB Roof Sheathing?

When it comes to OSB roof sheathing, the smooth side usually faces up. It provides a better surface for attaching roofing materials, ensuring a smoother and more aesthetically pleasing finish. So, let’s give a round of applause to the smooth side for always looking up to the challenge.

Does Underlayment Need to Be Taped Down?

In the epic battle against moisture, tape is the unsung hero. Yes, you heard it right. Taping down underlayment seams is highly recommended to create a watertight barrier and prevent moisture from seeping through. It’s like giving your floor a protective layer of invisible armor.

Which Side of the Green Underlayment Goes Down?

When it comes to that green underlayment, the color might have you feeling a bit envious. But fear not, the envy-inducing side goes down. Make sure the green side is in contact with the subfloor, bringing a touch of envy and a whole lot of protection to your flooring.

Which Direction Should My Wood Floor Run?

The direction of your wood floor is your chance to make a statement. Whether you choose to go with the flow or break the mold is entirely up to you. However, it’s generally recommended to install the wood floor perpendicular to the floor joists for maximum stability and visual appeal. It’s like sending a subtle message to your floor – “You’re unique, just like me.”

Which Side of Underlayment Goes Up?

When installing underlayment, the smooth side should face up. This provides a better surface for your finished floor, making it easier to install and creating a better overall appearance. Just remember, smooth is the way to go, bringing us one step closer to the silky smooth floors of our dreams.

Does Carpet Padding Go Over Tack Strip?

Imagine a dance floor without music or shoes without socks – that’s what happens when you place carpet padding over tack strips. So, let’s keep the melody alive and place the carpet padding under the tack strip. That way, your carpet can enjoy a secure and harmonious relationship with the floor.

Which Way Should Vapor Barrier Face?

When installing a vapor barrier, make sure it faces toward the warm side. This helps to prevent moisture from passing through and wreaking havoc on your flooring. So, let’s give a warm welcome to the vapor barrier and protect our floors from unwanted surprises.

What Happens If You Install Subfloor Upside Down?

If you ever find yourself feeling upside down and confused, remember that installing the subfloor upside down is a big no-no. It can lead to structural issues, squeaky floors, and disappointment galore. So, let’s keep our feet on the ground and our subfloors right-side up.

Which Side Does the Vapor Barrier Go On?

When it comes to the vapor barrier, it’s all about direction. The vapor barrier should go on top of the subfloor, facing the warm side. This way, it can keep moisture at bay and provide a cozy, dry environment for your flooring. Let’s give a round of applause to the vapor barrier for shielding our floors from the perils of humidity.

How Thick Should My Underlayment Be?

When it comes to underlayment thickness, there’s no one-size-fits-all answer. It depends on the specific flooring you’re installing. However, a common recommendation is to go for a thickness between 1/4 inch and 1/2 inch. It’s like finding the perfect balance between support and flexibility – just what your flooring needs.

What Do You Put Between Subfloor and Underlayment?

To create that perfect bond between subfloor and underlayment, it’s best to use construction adhesive. Apply it generously between the subfloor and underlayment before securing them together. It’s like giving them a warm and sticky hug, ensuring they stick together through thick and thin.

Which Side of Plywood Underlayment Goes Up?

In the world of plywood underlayment, the smooth side takes the crown and goes up. This provides a better surface for your finished flooring, creating a seamless and aesthetically pleasing appearance. So, let’s give a round of applause to the smooth side for always looking sharp and keeping our floors on point.

Should OSB Be Installed Vertically or Horizontally?

When it comes to OSB, the choice is yours – it can be installed either vertically or horizontally. Both orientations provide the necessary structural stability. So, whether you go vertical or horizontal, be like OSB and adapt to your surroundings with grace and precision.

What Goes on Top of Subfloor?

Once you have your subfloor in place, it’s time to add a layer of underlayment. This smooth and sturdy companion provides additional stability, moisture protection, and a smooth surface for your finished flooring. It’s like the sidekick to your subfloor’s superhero, ensuring your floor’s journey is nothing short of remarkable.

Can You Screw Down Underlayment?

Absolutely! Screw it, I mean…screw down your underlayment. Using screws is a common method to secure underlayment to the subfloor. Just make sure to use the appropriate screws and drive them in at regular intervals. It’s like giving your underlayment a hug, but with a bit of extra “screw you” strength.

How Far Apart Should Screws Be on Underlayment?

When it comes to screwing down underlayment, it’s recommended to place screws every 6 to 8 inches around the edges and every 10 to 12 inches in the field. This ensures a secure and stable underlayment that can withstand the test of time. So, let’s give a shoutout to those trusty screws for holding everything together like champions.


And there you have it – a comprehensive FAQ-style subsection that answers all your burning questions about underlayment like a pro. Feel free to bookmark this page for future reference, share it with your fellow DIY enthusiasts, or simply marvel at the wonder of underlayment knowledge. Stay curious, stay informed, and keep those floors rock solid!

You May Also Like