1. Introduction
The Dynamat DynaDeck is a high-performance automotive floor liner designed to enhance your vehicle's interior by providing superior noise dampening and heat blocking capabilities. This product serves as a waterproof carpet replacement, making it ideal for various applications including cars, trucks, SUVs, boats, and RVs.
Key features of the DynaDeck include:
- Effective barrier against road noise.
- Blocks engine and exhaust heat transfer.
- Waterproof and durable vinyl construction.
- Suitable for a wide range of vehicles and marine applications.

Figure 1: Dynamat DynaDeck 3ft roll product packaging, showing key features and dimensions.
2. Safety Information
Always prioritize safety during installation and use. Read all instructions thoroughly before beginning. Wear appropriate personal protective equipment, such as gloves and eye protection, when cutting or handling the material. Ensure adequate ventilation in your workspace. Keep out of reach of children.
This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
3. Product Overview
The DynaDeck is constructed with multiple layers to provide its insulating and sound-dampening properties. It features a durable, textured vinyl top layer for wear resistance, a PVC barrier, and a closed-cell foam layer for thermal and acoustic insulation.

Figure 2: Cross-section diagram illustrating the multi-layer construction of DynaDeck, including the textured vinyl top layer, PVC barrier, and closed-cell foam.
The material is designed to be flexible and easy to cut, allowing for custom fitting to various vehicle floor contours. Its waterproof nature makes it an excellent choice for environments where moisture is a concern, such as off-road vehicles or marine applications.

Figure 3: Close-up view of the DynaDeck material, highlighting its textured surface designed for durability and as a waterproof carpet replacement.
4. Installation Guide
4.1. Preparation
- Clean the Surface: Ensure the installation surface is clean, dry, and free of dirt, grease, oil, or rust. A clean surface promotes better adhesion if using an adhesive.
- Remove Obstructions: Remove seats, existing flooring, trim, and any other components that may obstruct the installation area.
- Measure and Plan: Carefully measure the areas where DynaDeck will be applied. Consider the contours and obstacles in the vehicle's floor.
- Optional Base Layer: For optimal sound and heat control, consider installing Dynamat Xtreme as a base layer before applying DynaDeck. DynaDeck is designed to install over Dynamat Xtreme.
4.2. Cutting and Fitting
- Template Creation: Create paper or cardboard templates of the floor sections to ensure precise cuts.
- Cutting the Material: Using a sharp utility knife or heavy-duty scissors, cut the DynaDeck material according to your templates. Cut from the vinyl side.
- Test Fit: Before final placement, test fit each cut piece to ensure it conforms correctly to the vehicle's floor. Make any necessary adjustments.

Figure 4: DynaDeck material shown in a roll, illustrating its 3/8" thickness and 54" width, available in various lengths for custom applications.
4.3. Placement
DynaDeck is a non-adhesive product, designed to lay flat and stay in place due to its weight and friction. For permanent installation or in areas subject to extreme movement, a suitable automotive-grade adhesive can be used (not included).
- Lay Down Pieces: Carefully lay each cut piece of DynaDeck onto the prepared surface, ensuring a snug fit without wrinkles or air pockets.
- Overlap (if necessary): If multiple pieces are used, minimize overlaps for a smoother finish. If overlaps are unavoidable, ensure they are neat and secure.
- Reinstall Components: Once all DynaDeck pieces are in place, reinstall seats, trim, and other removed components.

Figure 5: A guide for calculating Dynamat coverage for various vehicle types and areas like floor, firewall, doors, trunk, and roof.
Refer to Figure 5 for approximate square footage requirements for different vehicle types and areas. This can assist in planning your purchase and installation.
5. Care and Maintenance
DynaDeck is designed for durability and easy maintenance. To clean, simply wipe the surface with a damp cloth and mild detergent. Avoid harsh chemicals or abrasive cleaners, as these can damage the vinyl surface. For stubborn dirt, a soft brush can be used. Allow the material to air dry completely before reinstalling any components or using the vehicle.
6. Troubleshooting
- Material Not Lying Flat: Ensure the surface beneath is even. If the material is new and rolled, allow it to unroll and flatten at room temperature before installation.
- Reduced Effectiveness: Verify that the entire area is covered and that there are no significant gaps. For maximum performance, consider adding a Dynamat Xtreme base layer.
- Odor: New materials may have a slight odor initially. Ensure good ventilation in the vehicle after installation. The odor should dissipate over time.
7. Specifications
| Feature | Detail |
|---|---|
| Brand | Dynamat |
| Model Number | 21203 |
| Material | Embossed Vinyl, PVC Barrier, Closed Cell Foam |
| Color | Black |
| Dimensions (W x L) | 54" W x 3' L (for this specific variant) |
| Thickness | Approximately 3/8" |
| Item Weight | 11 pounds (for 3' long variant) |
| UPC | 769103212030 |
| Automotive Fit Type | Universal Fit |
8. Warranty and Support
Dynamat products are manufactured to high-quality standards. For specific warranty information, please refer to the packaging or contact Dynamat customer support directly. For further assistance, product inquiries, or technical support, please visit the official Dynamat website or contact their customer service department.
You can find more information and contact details on the Dynamat Brand Store.





