DECKO Flexistone

Substrate Requirements

Internal:

• Suitable surfaces: Drywall, MDF (dry areas only), compressed fiber cement sheeting, brick, or concrete
• Surface must be flat, clean, and dry

External:

• Suitable surfaces: Compressed cement sheeting, exterior-grade plywood, brick, or concrete
• Self-adhesive Brico panels not recommended outdoors
• Priming may be required for porous or dusty surfaces

Cutting

• Utility knife: For straight cuts (score multiple times)
• Jigsaw or fine-toothed circular saw: For curves or high precision

Corners & Edges

• No pre-formed corner trims included

At external corners there are three ways to finish the join:

• 1. Butt them together - bring the two corner panels edge to edge. Because the panels are slim, the join is barely noticeable. For a sharper finish you can optionally cut both meeting edges at 45 degrees so the two faces close up on the corner and no cut edge shows.
• 2. Aluminum L-trim - use an aluminum L-angle with legs the same depth as the panel thickness. It slots straight onto the corner and laps over the panel edge on both sides, so one piece covers and protects both cut edges. This is the neatest and most durable option, especially on external corners and in high-traffic areas.
• 3. Color-matched silicone - leave a small, even gap at the corner and fill it with a silicone in a similar color to the panels. The sealant bridges the join, allows for movement, and reads as a fine shadow line rather than an open gap.

Window and door openings: Cut panels to fit and finish with sealant or trim

Adhesive Recommendations

Spacing & Grouting

• Panels are typically butt-jointed for seamless look
• Grouting is not required
• Optional: use color-matched flexible sealant between joints for water resistance or aesthetics (especially outdoors)