Updating a Porch with PVC 01:01

Here are the DIY Basics for updating a Porch with PVC.

Watch an Overview Video

Step 1

Tools & Materials

PVC decking, molding & railing
#8x¾-inch pan head screws
#8x1 1/4–inch pan head, pancake, or cabinet screws
Measuring tape
Circular saw
Power drill
Forstner 5/8-inch drill bit

Step 2

Cut and Attach the Deck Starter

1. Cut deck starter to proper length with consideration for finishing trim options.

2. Screw deck starter onto ledger board closest to house securely.

Pro Tip

Extreme weather and sun can make porch maintenance an on-going problem; for a quick update, try long-lasting, easy-to-install PVC decking.

Before starting, check local building codes.

Because deck boards should closely approximate outdoor temperature at time of installation, store them outside.

Centers should be 16 inches maximum.

C-channel needs 1 ¼-inch overhang; finishing trim needs 1 ¼-inch overhang.

Step 3

Cut and Attach Deck Boards

1. Cut deck boards to length with proper overhang for trim.

2. Place tongue of first deck board into groove of deck starter.

3. Using #8x1 ¼-inch screws, fasten deck boards to every joist using pan head screws, fasten securely.

Pro Tip

Align screw slots over centers of supporting joists.

Add wood nailer adjacent to joist, if necessary.

Step 4

Attach the Fascia Boards

1. Cut last deck board to width and secure outboard edge at each joist.

2. Use a circular saw to trim deck boards to length.

3. Install c-channel or flexible finishing trim on all cut edges.

Pro Tip

Use vinyl adhesive for c-channel.

Attach trim boards with two 1 1/4-inch weather resistant fasteners at least every 16 inches.

Pre-drill screw holes 1/8-inch larger than screw.

Install fasteners no less than ½ inch and no more than 2 inches from edge of trim board.

Most building codes require porches 30 inches or more above ground to be enclosed by railings at least 36 inches high.