If you’ve been scrolling through sustainable flooring options lately, you’ve probably seen PET flooring pop up in home renovation groups, design blogs, and even commercial build specs. As someone who’s supplied PET flooring to residential contractors, small business owners, and DIY homeowners for the last seven years, I’ve lost count of how many times people have told me they love the idea of the recycled plastic material—until they open a box and stare at planks wondering, “Now what?” PET Flooring
PET flooring installation isn’t as scary as it looks, and it’s way simpler than many hardwood or luxury vinyl plank (LVP) installations, with fewer common pitfalls if you take the time to prep right. I’ve installed sample floors in my own workshop, trained 20+ local contractors to do the job, and walked hundreds of DIY customers through their first installs over the phone, so I’m here to break this down step by step, no fancy tools required. Let’s start with the basics: PET flooring is made from 100% post-consumer plastic bottles, melted down, compressed into durable planks, and layered with a wear-resistant coating. That means it’s waterproof, scratch-resistant, and way more eco-friendly than traditional flooring—but its installation follows a specific set of rules to keep it looking good for 15+ years, which is the average lifespan our products carry.
First, before you even pull the planks out of the box, there’s non-negotiable prep work that makes or breaks your install. I can’t tell you how many times I’ve gotten a call from a customer three days in, panicking because their planks are warping, or they don’t fit right, and the mistake always traces back to skipping acclimation. PET planks are solid, but they react to temperature and humidity just like any other flooring material, so leaving them in the room they’ll be installed in for at least 48 hours is non-negotiable. That means no storing them in your garage, basement, or a spare closet—they need to adjust to the conditions of the space you’re working on.
For example, if you’re installing in a bathroom that runs 70°F with 50% humidity year-round, leaving planks there lets them expand or contract to match that space, so you won’t have gaps later. If your space is too dry, planks will shrink and leave gaps; if it’s too humid, they’ll swell and buckle. Most of our residential customers have HVAC systems, so keeping the room at 65-75°F and 40-60% humidity during acclimation works perfectly. During the winter, if your heat runs super high and dries out the air, you might even want to run a humidifier in the room to keep the moisture levels steady— I learned that the hard way a few years back when a customer in Minnesota installed planks in January with the heat blasting, and ended up with gaps after a month.
Next, subfloor prep. This is the second most important step, and it’s where a lot of first-timers cut corners. PET flooring can be installed over almost any level, solid subfloor: plywood, OSB, concrete, existing vinyl plank, or even ceramic tile, as long as it’s smooth, clean, and structurally sound. No bumps, no cracks, no loose pieces. If you’re working with concrete, you’ll need to fix any cracks wider than a credit card with a concrete patching compound, and wait for it to fully cure (usually 24 hours) before moving on. If you have old tile, use a floor sander to knock down any high spots, then sweep and mop the entire subfloor with a pH-neutral cleaner—no harsh chemicals, because they can leave residue that keeps the planks from locking properly.
One quick tip for DIYers: lay a straightedge along your subfloor and check for high or low spots. If the edge rocks more than 1/8 of an inch, you’ll need to level it with a self-leveling compound. That’s a cheap, easy fix that takes about 24 hours to dry, and it’ll save you from having planks that click unevenly later. If you’re installing over underlayment—wait, most of our PET flooring planks come with attached underlayment, right? That’s one of the big selling points, so you don’t have to rent or buy extra underlayment material. If for some reason your planks don’t have attached underlayment, pick up a thin, vapor-permeable underlayment made for floating floors (PET is a floating floor, so underlayment helps with sound dampening and minor subfloor imperfections). Just make sure you tape the seams of the underlayment together with masking tape so no gaps show through.
Now, tools. You don’t need a ton—most of this is stuff you already have in a standard toolbox. For DIY installs: measuring tape, pencil, rubber mallet (not a regular hammer—you don’t want to dent the planks), miter saw or circular saw (with a fine-tooth blade, to avoid chipping the PET), utility knife, spacers (1/4 inch plastic spacers, you can pick these up at any hardware store), and a tapping block (another one that comes with most plank flooring kits, but if you don’t have one, a piece of scrap wood works). If you’re working on a larger space (over 500 square feet), you might want a suction cup or a pry bar to adjust planks, but I’ve installed 1,200 square feet of PET planks on my own with just the basic tools, so it’s totally doable.
Now, the installation itself, starting with layout. First, figure out your starting wall. You want to install along the longest wall of the room, not the shortest, because that makes the final row look more balanced (no weird, narrow strips that are harder to cut and look off). But wait—measure the distance between the first wall and the last wall, then divide that by the width of one plank. If the last row is less than 2 inches wide, shift your starting wall over by half a plank, so the last row is at least 2 inches wide. That’s a small detail that makes a huge difference in how professional the finished floor looks.
Next, the spacers. Place 1/4 inch spacers along the entire starting wall, and along the two side walls as you go. PET planks expand and contract, and that 1/4 inch gap gives them room to move without buckling. I always tell customers to leave the spacers in until the last plank is installed, so they don’t accidentally bump the wall and shift the gap.
Now, laying the first row. Take your first plank, place it tight against the spacers on the starting wall, and make sure it’s straight. PET planks have a tongue and groove system, right? Most of our planks are click-lock, so you just angle the end of the next plank up, slide the tongue of the new plank into the groove of the previous one, and press down firmly until you hear a distinct click. That click is how you know it’s locked in properly—if you don’t hear it, it’s not secure, and it might come loose later. For the side seams, once you’ve slid the plank into the end gap, use the tapping block and rubber mallet to gently tap the side of the new plank until it locks with the one next to it. Don’t hit too hard—PET is durable, but you don’t want to crack the edge.
Wait, what about cutting planks for corners or doorways? That’s where the measuring comes in. When you need to cut a plank to fit around a door jamb or a vent, measure the distance from the edge of the plank to the obstacle, add 1/4 inch (for the expansion gap), and mark that on the plank. Then cut it with your saw. For doorways, a trick I use is to cut the bottom of the door jamb slightly with a jigsaw so the planks slide under easily—no need to rip up trim, which saves you time and avoids damaging existing molding. Just make sure you test the fit before you cut, so you don’t make it too short.
Now, what about the middle of the room? When you get to the end of a row, you’ll need to cut a plank for the start of the next row. Pro tip: never start a new row with a full plank. Stagger the end joints by at least 12 inches, so you don’t have seams lining up across the room. That’s another old-school flooring rule that makes the floor look more seamless. So if you cut the last plank of the first row to 18 inches, start the next row with a plank that’s at least 18 inches long (so the joint is 12 inches off the previous one). That’s easy to do, and it prevents weak spots in the floor that might separate over time.
Now, for tricky spots: vents, closets, and transitions to other rooms. For floor vents, measure the size of the vent grate, mark it on the plank, cut the hole with a jigsaw, and test the fit. The grate will cover the edge, so you don’t have to worry about gaps there. For closets, you can either cut planks to fit along the back wall, or if it’s a small closet, stop the floor at the doorway and use a transition strip—just make sure the gap at the doorway is still 1/4 inch for expansion. For transitions between rooms (like from a living room to a hallway), use a T-molding that matches your PET flooring color. T-moldings are designed to cover the expansion gap and create a smooth transition, and they click into place on both sides of the gap. I always recommend buying a few extra transition pieces when you order planks—they’re cheap, and running to the hardware store mid-install is a hassle.
Now, common mistakes to avoid. Let’s talk about the ones I see most often. First, skipping acclimation—like I said earlier, that’s the #1 cause of warped or buckled planks. I had a customer in Chicago last year who installed planks straight out of the box in January, when his heat was running at 72 degrees 24/7. By the end of the week, his planks were expanding so much they were lifting the baseboards. We had to pull them out, wait three days for them to acclimate, and reinstall them, which cost him extra time and money. Don’t do that. Second, not leaving the expansion gap—if you take out the spacers before the end, the planks will have nowhere to go when they expand. Third, using a regular hammer instead of a rubber mallet—hammers leave dents in the soft surface of the PET planks, which are impossible to fix. Fourth, not staggering end joints—lining every seam up makes the floor look busy and can cause structural issues over time.
Once you’re done installing all the planks, it’s time for the final step: removing the spacers, and installing baseboards or quarter-round. Pull out all the 1/4 inch spacers, then replace your old baseboards with new ones that cover the expansion gap. If you don’t want to replace baseboards, you can use quarter-round molding, which is a small, curved piece that fits along the bottom of the baseboard and the floor, covering the gap. Either way, you don’t want to leave the gap exposed—it looks messy, and over time dust will get in there.
Wait, what about if you make a mistake? If a plank doesn’t lock in, or you have to cut a piece wrong, you can usually replace it. Our planks are designed to be disassembled by prying them up gently with a putty knife—just don’t pry too hard, or you might damage the edge. We always recommend ordering 5-10% extra planks when you place your order, so you have replacements on hand for mistakes, cuts, or future repairs. It’s way cheaper than running back to the store for one plank in the middle of a project.
Now, aftercare tips to keep your PET flooring looking good. Even though it’s durable, it’s not indestructible. Sweep or vacuum with a hard-floor attachment regularly (no beater bars, they can scratch the surface). Wipe up spills immediately—even though PET is waterproof, standing water for days can seep into the expansion gaps and cause mold, so just grab a cloth and wipe it up. For deep cleans, use a pH-neutral floor cleaner and a damp (not soaking wet) mop. Avoid harsh chemicals, bleach, or steam mops—steam can damage the coating on the planks, and harsh cleaners can leave residue that makes the floor look dull.
If you’re still feeling unsure, don’t hesitate to reach out. Whether you’re a DIY first-timer or a seasoned contractor, our team is here to walk you through every step, answer questions about subfloor prep, cutting tricky corners, or troubleshooting if you hit a snag. We’ve installed PET flooring in kitchens, bathrooms, basements, and high-traffic commercial spaces like cafes and retail stores, so we’ve seen every possible scenario and can help you get the perfect finish for your space.
At the end of the day, PET flooring is one of the easiest, most sustainable flooring options you can install, and following these simple steps will make your install go smooth. If you’re ready to get started, or want to learn more about our products, feel free to connect with our team to discuss your project, get a custom quote, or ask any questions you have about installation or product specs. We’re here to help you every step of the way.
Water Resistant Laminate Flooring References
- Floor Covering Installation Council of North America. (2021). Recommended Installation Practices for Floating Luxury Vinyl and Pet-Based Flooring.
- Sustainable Plastics Association. (2022). Performance Characteristics of Post-Consumer PET Flooring for Residential and Commercial Applications.
- National Wood Flooring Association. (2020). Subfloor Prep Standards for Click-Lock Flooring Products.
Jiangsu Zhengyoung Flooring Decoration Material Co., Ltd.
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