DIY how to install laminate flooring
Installing laminate flooring yourself involves preparing the subfloor, acclimating the planks, laying an underlayment, and then clicking the planks together. Proper measurement, expansion gaps, and using the right tools are crucial for a successful DIY installation.
Installing laminate flooring is a rewarding DIY project that can significantly update your home’s look without the high cost of professional installation. The key to a successful project lies in careful preparation, understanding the locking mechanism of the planks, and leaving adequate expansion gaps. This guide walks you through each step, from subfloor preparation to the final plank.
Before you begin, gather your tools and materials. You’ll need laminate planks, underlayment, a tapping block, a pull bar, a rubber mallet, a measuring tape, a pencil, a utility knife, a saw (miter saw or jigsaw), safety glasses, and knee pads. Ensure you have enough planks, accounting for about 10% extra for cuts and waste. Check the manufacturer’s specific installation instructions, as they may vary slightly.
Prepare your subfloor
A level and clean subfloor is critical for a good laminate installation. Start by removing any existing flooring, baseboards, and tack strips. Sweep and vacuum the subfloor thoroughly to remove all dust and debris. Check for high spots or low spots. High spots can often be sanded down, while low spots might need a leveling compound. The subfloor must be flat within 3/16 inch over a 10-foot span, according to the International Residential Code (IRC).
Laminate flooring can be installed over most existing hard-surface floors, including vinyl, tile, or even old hardwood, provided they are flat, clean, and securely fastened. If you are installing over concrete, ensure it is completely dry and use a 6-mil polyethylene vapor barrier, overlapping seams by 6 inches and taping them. This is especially important in basements or on ground-level concrete slabs.
Acclimate the laminate planks
Laminate flooring needs time to adjust to the temperature and humidity of your home. This process, called acclimation, prevents the planks from expanding or contracting excessively after installation, which can cause buckling or gaps. Store the unopened boxes of laminate on the job site in the room where they will be installed for at least 48 to 72 hours before starting. Ensure the room temperature is between 65°F and 75°F (18°C to 24°C) and the relative humidity is between 35% and 65%.
Install the underlayment
Most laminate flooring requires an underlayment. This layer provides cushioning, sound insulation, and a moisture barrier. Roll out the underlayment according to the manufacturer’s instructions, typically perpendicular to the direction you plan to lay the planks. Trim excess material with a utility knife. If your underlayment has a vapor barrier with a film, ensure it faces upwards. Overlap seams as recommended by the manufacturer and tape them securely.
Lay the first row of planks
Start in a corner of the room, usually the longest wall, with the tongue side of the plank facing the wall. You’ll need to remove the tongue from the planks that will face the wall. Use a utility knife to cut it off. Place the first plank with its “click” side facing into the room. Leave an expansion gap of at least 1/4 inch (6 mm) between the planks and all walls, doorways, and permanent fixtures. Use spacers to maintain this gap. This gap is essential for the flooring to expand and contract with changes in temperature and humidity.
Connect subsequent planks
To connect the second plank to the first, angle the tongue of the second plank into the groove of the first and lower it to create a tight seam. Continue this process for the entire first row. For the last plank in the row, you may need to measure and cut it to fit. Measure the remaining space, subtract the expansion gap, and cut the plank to size. Use a pull bar to engage the last plank by hooking it onto the edge and tapping it gently with a rubber mallet.
Begin the second row and beyond
Start the second row with a plank cut to a different length than the first plank of the first row. Aim for an offset of at least 6 inches between the end joints of adjacent rows. This staggered pattern adds strength and visual appeal to the floor. Angle the long edge of the second-row plank into the groove of the first-row plank and click it into place. Then, use the tapping block and rubber mallet to gently tap along the long edge to ensure a tight fit. Repeat this for the short end of the plank, tapping the end joint until it’s flush.
Cutting around obstacles
When you encounter doorways, cabinets, or other fixed objects, you’ll need to cut the planks to fit. For door jambs, you can often slide the plank underneath by cutting off the bottom lip of the jamb with a handsaw or oscillating tool. For other obstacles, measure carefully and make precise cuts. Remember to maintain the expansion gap around these obstacles as well. Dry-fit pieces before making final cuts to ensure accuracy.
Install the final row
The last row of planks will likely need to be cut lengthwise. Measure the distance from the installed flooring to the wall, subtract your expansion gap (1/4 inch), and cut the planks to this width. You may need to remove the locking strip on the edge of the planks that will face the wall to make them fit. Use the pull bar to gently lock the final row into place. Ensure the expansion gap is maintained on all sides.
Finishing touches
Once all planks are installed, re-install your baseboards. The baseboards should cover the expansion gap. If you cannot re-use your old baseboards, install new ones. Ensure they are securely fastened to the wall, not the flooring. You can also use quarter-round molding for a cleaner finish if needed. Clean the new floor with a soft broom or vacuum and a damp (not wet) mop. Avoid using excessive water, as it can damage laminate.
Common mistakes during laminate flooring installation
| Step | Typical Mistake | How to Avoid It |
|---|---|---|
| Subfloor Preparation | Uneven or dirty subfloor | Ensure the subfloor is level (within 3/16″ per 10ft) and completely free of debris. Use leveling compound for low spots and sand down high spots. |
| Acclimation | Not acclimating the planks | Store unopened boxes in the installation room for 48-72 hours before starting to allow planks to adjust to temperature and humidity. |
| Expansion Gaps | Forgetting or undersizing expansion gaps | Always leave a 1/4″ (6mm) gap around the perimeter of the room and all fixed objects. Use spacers to maintain consistency. |
| Plank Installation | Forcing planks together or not achieving a tight seam | Use a tapping block and rubber mallet gently. Ensure the locking mechanisms are properly aligned before tapping. Never hit planks directly. |
| Staggering Joints | Aligning end joints in adjacent rows | Ensure end joints are offset by at least 6 inches in adjacent rows for structural integrity and visual appeal. |
FAQ
Can I install laminate flooring directly over my existing carpet?
No, you cannot install laminate flooring directly over carpet. Carpet is too soft and will not provide a stable, flat base. You must remove the carpet and tack strips, and ensure the subfloor underneath is clean, dry, and level before proceeding with laminate installation.
How do I clean laminate flooring after installation?
Clean laminate floors with a dry or slightly damp mop. A soft broom or a vacuum cleaner with a hard floor attachment is also suitable. For tougher spots, use a cleaning solution specifically designed for laminate floors, and always ensure the mop is wrung out well to avoid excess moisture.
What is the best type of saw for cutting laminate flooring?
A miter saw is ideal for making straight, clean cuts for most of your plank needs. A jigsaw is useful for cutting around irregular shapes or making cutouts. Ensure you use a fine-tooth blade designed for laminate or wood to prevent chipping.
Do I need a vapor barrier for laminate flooring installation?
A vapor barrier is generally recommended, especially when installing over concrete subfloors or in basements or areas prone to moisture. Check the laminate manufacturer’s instructions; some underlayments include a built-in vapor barrier.