We’d like your mahogany deck installation to go as smoothly as possible, with the finished product’s appearance and performance maximized for your enjoyment. To this end, we recommend the following:
- Keep all your deck material clean and dry prior to treating and installation.
- D.J.’s Decking has an option for pre-staining with Sun Frog sealer to treat your deck materials with a penetrating sealer on all 6 sides prior to installation.
- Our decking is kiln dried; there is almost no shrinkage. Like all woods, though, it will absorb moisture.
- We recommend blind screw method with stainless steel trim head screws.
- Mahogany is a kiln-dried hardwood.
- Kiln-dried deck boards will not shrink appreciably after installation. They will, however, expand during periods of high humidity or prolonged rainfall.
- Follow your local building codes.
Spacing Deck Joists
- Because of the strength of 5/4 mahogany decking, your deck can be framed 24” on center. 16” on center framing, while not necessary, will increase the strength and stability of your deck.
Spacing Deck Boards
- 4” deck boards should be spaced a minimum of 3/16” apart and 6” deck boards should be spaced a minimum of ¼” apart to allow for width expansion. This expansion does not affect the overall length of the board.
Fastening Deck Boards
- We recommend drilling pilot holes on the ends of each deck board to minimize splitting.
|Top Screw||Blind Screw|
- There is an optional method called the blind screwing method that drills screws into the side of each deck board to prevent any holes or screws on the top surface.
- Recommended fasteners include nails (Senco or equivalent – 2 ½” brad head stainless steel nail.) and screws (GRK 2” stainless steel trim head or equivalent).
- Fasteners should be no less that ¾” from the end or edge of the deck board. Fasteners at the ends of each board should be inserted at a slight angle (5-10 degrees) into the joist.
Finishing Your Deck
- Keep your deck materials clean and dry prior to treating and installation.
- We recommend sealing your deck boards on all four sides and both ends before installing your decking. Moisture will continue to enter and exit a deck board long after it is installed. Sealing the deck board on only one side with a deck finish is not recommended. If only one side allows moisture to come and go, cupping may occur.
- There are many fine deck stains on the market. A sealer with pigments (U.V. inhibitors) will help fight fading and discoloration caused by direct sunlight. Consult your local dealer for the best products to maintain long lasting beauty. We use “Sun Frog” deck sealer. Other recommended sealers include:
- Super Deck
- Duck Back
- Cabots- Australian Timber Oil