- 5728 East Lake Sammamish Parkway SE Issaquah, WA 98029
- 425.392.3631
- sales@issaquahlumber.com
The GRAD System is a significant advantage for designers and contractors today, offering an aesthetically pleasing appearance and fast, easy installation. The aluminum rail, featuring a hidden clip system, is used for decking, siding, and more. It is made from 80% recycled aluminum and is lightweight, corrosion-resistant, and non-flammable. The plastic clips keep their natural elasticity over time.
GRAD System clips come pre-fixed and do not require individual fastening. There’s no need to double-check board spacing, saving up to 50% of install time.
Compared to a traditional 200 square foot deck at 16” on center to GRAD.
Traditional: 1100 screws
GRAD: 110 screws
Decking and open joint cladding boards can be easily removed and updated using a dismantling tool, ensuring no damage in the process.
Clip spans are tailored to your project, offering a unique solution and can accommodate board widths, variable spacing, 3D effects, mixed materials, and more.
GRAD materials are resistant to corrosion, fire, insects, and rot, and can be used in a wide range of temperatures and climates.
Because the boards sit on clips, there’s no contact with the aluminum joists — reducing water traps and helping prevent cupping for longer-lasting performance.
The aluminum frame, clips — made from polyoxymethylene — and accessories work together to create a stiff, highly stable structure.
Perfectly aligned boards ensure clear drip lines and uniformity that complements any design.
The GRAD® hidden fastener system delivers a clean, uninterrupted deck surface while ensuring every board is perfectly aligned and securely held in place. Its clip-and-rail design speeds up installation, eliminates guesswork, and reduces the risk of warping or movement over time. At Issaquah Lumber, we have curated a selection of modified and natural wood decking options that offer consistent spacing, long-term stability, and a premium finished look.
For exterior cladding, the GRAD® system provides precision mounting and a flawless architectural finish. The concealed fasteners create a modern, streamlined appearance while promoting proper ventilation, improving performance, and longevity. Ideal for use with both modified and natural wood species, GRAD ensures uniform spacing, secure attachment, and faster installation than traditional methods.
