Under coating

The substructure of a deck must be resistant to rot and is particularly prone to moisture damage from below and from above. Ground level decks often lack airflow from below if they are sealed around the outer perimeter and from above when debris from overhead trees gets stuck in cracks. This can create a situation where there are soft spots on the deck boards and screws are coming loose due to not getting a bite into the rotten joists.

Under coat dark brown
Under coat red

Key features of our under coating services:

We build rot proof structures by using stained pressure treated lumber, allowing proper gapping on deck boards, and designing for proper airflow around outer edge. If it is an existing deck we can also do a restorative process whereby we prep the underside for a solid stain application that protects and beautifies the structure.

Under coating is recommended on decks with decks or patios below them or if they are visible from below. Generally this is more of an aesthetic question since properly built upper level decks will be fairly rot resistant even without staining. Ventilation and drainage are the key factors. Also, with upper level decks we can replace/install new joists if rot in certain areas does occur.