Alside Centerlock Review – Unique interlock for added strength


Alside Centerlock Vinyl Siding
  • Editor Rating

  • Rated 4.5 stars
$95to $125
  • 90%

  • Alside Centerlock Vinyl Siding
  • Reviewed by:
  • Published on:
  • Last modified: August 9, 2014
  • Durability
    Editor: 87%
  • Appearance
    Editor: 70%
  • Features
    Editor: 90%
  • Options
    Editor: 65%
  • Colors
    Editor: 65%


This is a solid mid tier choice for vinyl siding. It is a thick .044 panel at standard 12' 6" length. Available in standard clapboard and dutch-lap profiles for a classic look. Centerlock features a unique in the industry mid panel (where to two 4.5" sections intersect locking system. This creates a flush to the wall look which helps minimize the appearance of seams. Where standard panels simply overlap with a notch out for the nailing hem, Centerlock has a positive interlock binding adjacent panels together. With a decent color selection and a lifetime warranty you won't be disappointed. A solid contender is not buying an insulated panel.


  • Unique Mid Panel Interlock Patented Design
  • .044 thickness
  • Lifetime Warranty
  • Classic look and feel


  • Somewhat limited color selection
  • Only available in Double 4.5" Clapboard and Dutchlap for profiles
  • Non-insulated panel UPDATE = available with insulated backerboard now matching profile.
  • No Extended lenth options (doesn't matter as much with Centerlock as seams are minimized)