SPI 305 - 5mm - 3 ¼” x 25' Sill Plate Isolation Mat
SPI305 – 5mm – 3 ¼” x 25’ Sill Plate Isolation Mat. Material Composition: Reclaimed rubber + high damping acrylic polymers
- Thickness Options: 5mm and 10mm
- Installation: Fast and easy; factory-slit to width, field-cuttable with utility knife
Sill Plate Isolation Mat – Product Description
A premium acoustic isolation solution designed to decouple wall assemblies from the building structure, reducing sound and vibration transmission. Ideal for commercial, residential, and LEED-certified projects.
Origin
- Made in the USA – Manufactured under strict quality control standards for trusted long-term performance and domestic sourcing compliance.
- Material Composition: Reclaimed rubber + high damping acrylic polymers
- Thickness Options: 5mm and 10mm
- Installation: Fast and easy; factory-slit to width, field-cuttable with utility knife
- Compatibility: Use with W20R isolation washers for enhanced sound isolation
- Placement: Suitable for both bottom and top plates
Sustainability
- Made with recycled materials
- Moisture-resistant and mold-proof
- LEED-friendly: Can contribute toward earning up to 9 LEED points
- Permanent resilient gasket for long-term acoustic decoupling
Performance Attributes
| Attribute | Description |
| Acoustic Isolation | Reduces structure-borne noise and vibration |
| Moisture Resistance | Unaffected by water |
| Mold Resistance | Will not support mold growth |
| Resilient Support | Continuous support for partition |
| Durability | Manufactured to strict density standards |
| Installation | Quick, clean, and adaptable |
| SKU | SPI305 |
|---|---|
| Brand | Resilmount |
Shipping & Returns
Shipping:
We offer free standard shipping on all orders over $200 ($975.00 for Simpson StrongTie products). Orders are usually processed within 1–2 business days and delivered within 5–7 business days. Express shipping options are also available at checkout.
Returns:
If you are not completely satisfied with your purchase, you may return your item(s) within 30 days of delivery for a full refund or exchange. Returned items must be in their original condition and packaging.
For more details, please visit our Return Policy page.
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