Finish TradesQuestion 484 of 700
When cabinets or millwork will be installed in a consistently damp area, which substrate is generally the BEST choice for the cabinet boxes?
a.Ordinary interior particleboard with no moisture rating
b.A moisture-resistant panel such as marine-grade or exterior plywood
c.Uncoated medium-density fiberboard
d.Untreated softwood boards with open joints
Explanation
In damp areas a moisture-resistant substrate such as marine-grade or exterior-rated plywood resists swelling and delamination. Standard particleboard and uncoated MDF swell and disintegrate when wet, and untreated open-jointed softwood readily absorbs moisture and decays.
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