Mastic Structure Insulated Vinyl Siding S7, 7 in. x 12 ft. 3 in. Panels, EPS Foam-Backed, Multiple Colors

Mastic Structure S7 insulated vinyl siding pairs 7 in. x 12 ft. 3 in. wide vinyl panels with bonded expanded polystyrene foam to wrap the exterior wall in continuous insulation. The line is offered in 14 colors, including Harbor Gray, Pebblestone Clay, English Wedgewood, Desert Sand, Linen, White, and Wicker, sold per piece, square, or carton depending on the item. Panels lock together with Structure's T3 lock for a rigid, wood-like wall.

Key Features:

• Continuous insulation: Expanded polystyrene foam backing increases the R-value of exterior walls and lowers energy bills while reducing outside noise.
• Impact resistance: The rigid foam substrate gives the panels up to 300% more dent and impact resistance than standard vinyl siding.
• T3 locking system: A uniquely designed lock tightens under pressure so panels stay put even in challenging weather and install quickly.
• Wood-like appearance: Wide 7 in. panels look and feel like traditional wood siding in a low-maintenance vinyl finish.
• 14 color options: Available in 14 colors including Harbor Gray, Pebblestone Clay, Scottish Thistle, Rugged Canyon, Montana Suede, and Classic Cream.
• Quiet comfort: The foam layer helps reduce noise transfer into the home.

Specifications Table:

Coverage & How Much You Need:

Each 7 in. x 12 ft. 3 in. panel covers roughly 7.05 sq. ft. of wall; a siding square of this profile is nominally 100 sq. ft. Order panels by wall area minus openings, allowing standard lap and waste allowances.

Fit and Compatibility:

Designed as part of the Mastic Structure Home Insulation System; pair with matching Structure lineals, corner posts, and soffit accessories for a finished look. Trim and starter pieces are sold separately.

Frequently Asked Questions (FAQ):

Q: What is included with each order?
A: One sell unit of S7 insulated siding in the color you choose; depending on the color, units are sold per piece, per square, or per carton.

Q: How much wall does one panel cover?
A: A 7 in. x 12 ft. 3 in. panel covers approximately 7 sq. ft. before lap and waste allowances.

Q: Is this more impact resistant than regular vinyl?
A: Yes, the EPS foam backing gives up to 300% more impact resistance than standard vinyl siding.

Q: Does it really help with energy costs?
A: The continuous foam layer increases the R-value of the exterior wall, which the manufacturer states can help lower energy bills.

Q: What trim do I need?
A: Use matching Mastic Structure lineals, corner posts, and J-channel, which are sold separately.

Q: How many colors are available?
A: The S7 line comes in 14 colors, from White and Almond to Victorian Gray and Scottish Thistle.

Expert Verdict — Reviewed by the SuperArbor Pro Desk

Structure S7 is the right choice where energy performance and dent resistance matter most, such as homes in hail-prone areas or on busy streets. The 7 in. exposure gives a bold, traditional clapboard shadow, and the foam backing stiffens the wall so panels hang straight even on uneven framing. Order all colors from the same production lot where possible and let panels acclimate before cutting in cold weather.

Follow local building codes and the manufacturer's installation instructions, including proper flashing and fastening, and use fall protection when working at height.

Order Mastic Structure Insulated Vinyl Siding S7 today and wrap your home in a continuous blanket of insulation.