Veranda Decking Installation

Veranda Composite Decking - Home Depot's premier decking product

Installation Instructions
Joist Span
Side Gapping
Veranda Hidden Fasteners for Grooved Decking
Fasteners for Square Decking
Colour Variation
Care and Cleaning
Mold Prevention

Installation Instructions

Veranda® Composite Decking and Railing perform better than standard wood decking but are just as simple to install. Click on the link below for easy instructions on installing Veranda products.

Grooved Decking Installation - English - (pdf - 275 KB)
Grooved Decking Installation - French - (pdf - 275 KB)

Square Decking Installation - English - (pdf - 142 KB)
Square Decking Installation - French - (pdf - 136 KB)

Deck Stones Installation (pdf - 459 KB) - Bilingual

For best results in installing Veranda Decking, think through the entire process in advance, familiarizing yourself with the materials and their application. Please review the tips provided below before you begin to install your Veranda Deck. For additional installation support, call 877-463-8379.

Note: The appearance of deck boards change when the boards are viewed from different ends. For the most consistent colour, install all of the boards in the same direction using the end tags as a point of reference. Installing boards in opposing directions will create a deck surface with contrasting light and dark shades and is not covered under warranty.

Prior to constructing your Veranda Deck, check with your local regulatory agency for special code requirements in your area. For best results, follow these simple installation instructions, paying close attention to gapping, spacing and fastener requirements.

Joist Span

Depending on local building code requirements, refer to PFS-TECO RR-0100 or CCMC 14114-R for joist spacing and stair tread support options. Contact Veranda product support at 877-463-8379 for information on commercial applications.

Side Gapping

Side-gapping should be 1/4". For end-spacing, allow a minimum of 1/16" gap for every 6° Celsius (Click for Chart) of difference between installation temperature and the hottest temperature expected. Additional blocking may be required for support (see Figure 1). Allow a 1/4" distance between all decking material and any permanent structure or post.

Veranda Fasteners for Grooved Decking

To install Veranda Grooved Decking, follow the installation instructions included with the Veranda hidden fasteners.

Veranda Hidden Fasteners can be installed in just four easy steps:

1. Pre-drill in the slot of the deck board with an 1/8" drill bit. Drive screw into the slot so it’s flush with the bottom of the groove.
2. Fasten using a #8, 2" stainless steel screw at a 90° angle through the Veranda hidden fastener and drive flush with the clip.
3. For installations where deck boards are butted end-to-end at the joist, we recommend adding an 8" block and using a Veranda hidden fastener clip at the end of each board.
4. Be sure to gap the boards as previously described. Repeat the process for each board until the outside edge of the finial board is fastened with screws.
veranda instructions

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Fasteners for Square Decking

To fasten Veranda Square Decking, we recommend using 2-1/2" corrosion-resistant, composite wood deck screws. These screws help minimize the "mushroom" effect that sometimes occurs when using standard fasteners and will minimize the amount of pre-drilling and countersinking needed. If you are using ordinary, coarse-thread deck screws, it is best to pre-drill a pilot hole and countersink before driving screws. Screws should be driven flush with the Veranda surface. Do not over-tighten the screws. Use two fasteners per deck board at each joist. For any decking where two boards meet end-to-end over a joist, add additional blocking (see Figure 1). Always pre-drill a pilot hole at board ends when using either composite or wood screws.

After all of the decking has been attached, snap a chalk (use white or yellow chalk, as blue and red chalk will take extra time to wear off the surface) line flush with or up to 1-1/2" out from the deck framing and trim with a circular saw.

Figure 1. Pre-drill and countersink all deck screws, regardless of type, that are within 1-1/2” of the end of the deck board.

Veranda decking, like all wood and composite decking products, requires proper ventilation and drainage in order to ensure its longevity. When using a minimum 2x6 joist standing on edge and the suggested 1/4" side gap, there should be a 2" clear space between the bottom edge of the joists and grade in order to allow for proper ventilation. Adequate drainage is also needed to prevent water from pooling under the deck.

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Attach fascia to the rim joist using 3 screws spaced no further apart than 16" on-center. Fasten the fascia from one end to the other or from the center out to each end. Never fasten the fascia from both ends to the center. Leave a 1/8" space between the fascia ends where two pieces meet or wherever a piece meets a solid surface (i.e., a corner or a building wall) to allow for expansion of the material. Use one of the recommended installation configurations below for best results.

Possible configurations to conceal 2x10 and 2x12 joists:

Colour Variation

Like most composites, Veranda boards will have colour variations from piece to piece. This is due to naturally occurring variations in wood fibers and polymers. Purchasing all required decking material at one time is recommended as manufacturing runs can produce slightly different colours. Do not install if colour variation is not acceptable. Veranda will lighten over time, and colour variation is not covered by the warranty. This colour-tone shift is dependent upon exposure to sunlight and other environmental factors and is generally completed in 60-90 days. Grey products may turn a light brown before changing to lighter grey. See our colour guide below for simulated examples.

Veranda Composite Grey

Veranda Composite Redwood

Veranda Composite Walnut


Care and Cleaning

Periodic washing with soap and water is necessary to remove surface dirt and chalk, which accumulate on the surface. This will also prevent the build-up of pollen and debris that can cause mold and mildew growth. Pressure washers should be used for wetting and rinsing only. Pressure washers should not be used to “blast-off” soiling agents; attempting to do so can drive the dirt deeper into the material. Test on an inconspicuous area before washing the entire deck.

Basic Deck Cleaning Agents:

  1. Deck wash/cleaners usually contain sodium percarbonate and a detergent. Effective on normal dirt and grime, and bleaches out mold and mildew stains.
  2. Oxalic acid cleaners are effective on rust stains from metal furniture.
  3. Commercial degreasers contain propylene glycol, sodium hydroxide, and various detergents for removing grease and oil stains.
  4. Spot removers/thinners can be used sparingly on particularly stubborn grease or oil stains but should be washed off quickly with water, as it will attack the grain pattern. They normally include petroleum distillates, xylene, methanol, acetone, or other organic solvents.

How do I prevent mold and mildew from growing on my composite decking and railing.

Mold formation is most prevalent in consistently wet, shaded areas. Spores from the natural environment are carried by the wind and commonly land on decks surfaces. It is important to note that the appearance of mold/mildew is a function of nature, not necessarily a deficiency with any of the material on which it grows.

Learn how to prevent mold and mildew growth on your deck.

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