Get on the floor. Seriously—take the wood out of those boxes and let it do its thing.
If only it were that easy. Installing oak hardwood takes time, patience, and a bit of stubbornness. But once it’s down, it transforms a space—warm, durable, and beautiful. We quickly learned that the time invested is worth it.
We chose solid oak hardwood for the four upstairs bedrooms and the hallway because the downstairs rooms and the stairs already had medium-toned oak that matched our taste and lifestyle—durable enough for kids and dogs. But the biggest obstacle wasn’t the wood itself: it was the subfloor.
Our subfloor was particle board, which can be unpredictable under nail-down hardwood. Some people install directly over particle board with no problems, while others see failure later on. Manufacturers often void warranties for nail-down installations over particle board, so we ruled out risking our warranty. Initially we considered three options:
- Return the nail-in flooring and buy a floating floor instead. We loved the color and character of the boards we’d selected and didn’t want to trade them for a floating option that wouldn’t match our existing stairs and downstairs floors.
- Remove the particle board to expose plywood beneath. That would have been messy and time-consuming, likely lowered the floor height (affecting door clearances and transitions), and eliminated the sound-deadening layer the particle board provided.
- Install plywood over the particle board. This would create a stable surface for nailing, but it would raise the floor height, force us to trim doors and potentially create an awkward top stair step, and add material cost.
Then the Lumber Liquidators rep suggested a fourth option: an adhesive underlayment called Elastilon.
Elastilon is a self-adhesive, elastic underlayment developed in Europe for installing hardwood over surfaces that aren’t suitable for nailing, such as concrete or tile. It acts like a sticky mat that the wood adheres to instead of being nailed. We were skeptical at first, but after reading positive reviews and watching installation videos, it felt like a viable, warranty-friendly solution.
Benefits that sold us on Elastilon:
- Lifetime warranty that aligns with the hardwood lifespan.
- Elasticity that accommodates seasonal movement—reducing cracking, gapping, and warping.
- Simple installation using only a utility knife—no flooring nailer required.
- No-VOC, non-toxic adhesive with minimal odor.
The primary downside was cost: Elastilon ran about $100 more per roll than the underlayment we had planned to use. In the end, we spent roughly $500 more than expected, but we avoided renting or buying a nailer, received a 10% discount on our order, and saved about $4,000 by installing the floors ourselves.
Installation had a learning curve, but once we found a rhythm it moved smoothly. With the subfloor clean and dry, we rolled out Elastilon and left a small plastic flap along the wall following the manufacturer’s instructions. That flap proved crucial when setting and permanently securing the first rows of boards.
After rolling the underlayment, you peel back the protective plastic on that flap and cut away excess material. The exposed adhesive holds the bottom of the boards as you position them.
The first row is the most critical because it determines how straight the entire floor will be. Walls are rarely perfectly straight, so we selected our longest, straightest boards and used scrap wood spacers to maintain the required expansion gap along the wall.
We also ran our first row out into the hallway to establish a long, straight line, and rough-set several boards before sticking anything down to confirm the layout looked right.
To permanently secure rows, we slowly peeled the plastic flap so the adhesive beneath the boards was exposed, then pressed the boards onto the Elastilon. Once bonded, the boards are firmly stuck—they require a good tug or a pry to remove—so the hold felt extremely reliable.
The rest of the install followed standard tongue-and-groove techniques. We tapped boards together with a rubber mallet and used a small amount of wood glue in the end grooves for extra security. Periodically we taped rows together to prevent slipping during the install. Working as a two-person team was efficient: one person applied glue and prepped boards, while the other clicked them in and tapped them tight.
The finished result is a tight, gap-free floor that still allows for natural movement with temperature and humidity changes—meaning it should resist cracking and warping for years to come.
That said, the process wasn’t fast. Our largest bedroom took about 10 hours over two days for the two of us to complete, and that was our first room. There were also a few surprises along the way. Initially we hoped to leave the baseboards in place, but once the floor height changed we realized the baseboards would look too short and wouldn’t cover the required expansion gap. We removed and later reinstalled the baseboards, adding quarter round where needed. The paint needed only a few small touch-ups.
By the end of the long weekend we’d finished the upstairs rooms, reinstalled baseboards, and added quarter round in most areas. The floors look fantastic and feel solid underfoot—definitely an upgrade from carpet.
One of the nicest results is the seamless run of flooring through all four bedrooms and down the long hall—no awkward transitions at the doorways, except where the floors meet tiled bathrooms. The continuous look is clean and cohesive.
We moved in the following weekend, so the timing worked out perfectly. All that remained was finishing the packing and getting settled. If you’re considering a similar DIY hardwood project, expect it to be time-consuming but very rewarding—the right underlayment and careful layout make a big difference.
PS — For a detailed follow-up about handling transitions, angled walls, door jambs, and how the wood meets the top of the stairs, see our additional installation notes.
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