Proper expansion space is critical when installing laminate flooring. Without enough space left around walls, fixed objects, vertical surfaces, and even screws or fasteners, the flooring can squeak, buckle, lift, or separate. Even a single improperly installed plank can cause issues throughout the entire floor.
Why Expansion Space Matters
During laminate flooring installation, a gap must be maintained around all walls and vertical surfaces to allow for natural expansion and contraction. Without this space, the floor can warp, tent, or develop gaps at the seams.
Expansion Space Requirements
- Must be left around fixed objects such as pipes, cabinets, fireplace hearths, sliding doors, floor outlets, vents, and thresholds.
- The required expansion space size varies by manufacturer and ranges from 1/8” to over 1/4”.
- Failure to leave the proper space locks the floor in place, increasing the risk of buckling, tenting, and joint separation.
- Installers must also ensure the expansion space is narrower than the base molding or trim used to cover it.
Preventing Flooring Tenting & Buckling
T-Molding and Its Role in Expansion Space
When a laminate floor lifts off the subfloor and tents upward, improper expansion space is often the cause. A T-Molding strip is essential to allow for movement, preventing tenting and gaps.
laminate floor expanding and then separating. ” class=”wp-image-140″/>Key Considerations for T-Molding
- Never fasten T-Molding (transition molding) directly onto the laminate floor or secure it tightly against plank edges, as this will restrict movement.
- Most laminate manufacturers require T-Molding in doorways narrower than 4 feet.
Under-Cutting Door Jambs for Expansion Space
Failure to undercut door jambs can lock the floor and cause expansion-related issues. Proper undercutting ensures a seamless installation and prevents buckling and movement restrictions.
Avoiding Installation Errors
A poorly undercut door jamb is a clear installation error that can lead to future flooring problems. Installers must ensure a clean undercut that allows for smooth expansion and contraction.
Some DIY and lazy installers will cut around the door jambs. Take the time to do it correctly and undercut the door jambs. Undercutting not only gives a better appearance, but it also allows for expansion.
Industry Resources and Professional Guidance
For expert laminate flooring installation and solutions, visit:
- NALFA (North American Laminate Flooring Association) – Industry guidelines and manufacturer recommendations.
- TW Group – Flooring inspection and troubleshooting experts.
Final Thought
When installing a laminate floor, taking extra time to do the job correctly will save you money. The first step in an installation is to read and understand the manufacturer’s installation instructions. Follow those instructions, including their requirements for expansion space. Doing so will prevent several potential problems in the future and give you a better-looking installation. Preventing problems saves money.
