Time Estimate
2-4 hours for 300 sq ft
Cost Per Sq Ft
$0.50-2
Total Cost Example
$150-600 for 300 sq ft
Installation Steps
1
Choose Correct Underlayment
Foam for laminate, felt for engineered wood, cork for sound dampening. Check flooring manufacturer requirements.
2
Clean Subfloor
Sweep and vacuum subfloor thoroughly. Remove all debris and dust.
3
Install Vapor Barrier (Concrete)
Lay 6-mil polyethylene sheeting over concrete. Overlap seams 6 inches and tape.
4
Roll Out Underlayment
Unroll underlayment perpendicular to planned flooring direction. Butt edges together tightly.
5
Tape Seams
Use moisture-resistant tape to seal all seams. This prevents shifting and moisture penetration.
6
Trim Excess
Cut underlayment flush with walls using utility knife and straightedge.
7
Overlap at Doorways
Extend underlayment through doorways into adjacent rooms for continuous coverage.
Shop Materials & Tools
Shop Materials
Shop MaterialsPro Tips
- •Never overlap underlayment - it creates uneven surface
- •Thicker is not always better - follow manufacturer specifications
- •Combination underlayment with attached vapor barrier saves time
- •Cork underlayment provides best sound dampening but costs more