The Hush-Felt 25 Joist strips are a cost-effective alternative to composite floating flooring, providing excellent performance. They are designed for use in the construction of floating floors over timber joists in both new build and refurbishment projects. These strips consist of hardboard slats that provide a firm and smooth surface to support chipboard, OSB, or plywood T&G flooring boards. Hush-Felt 25 is also an integral part of a sound insulation system between separating floors.

These strips are designed to provide impact sound insulation between separating floors. They are commonly used in refurbishment and new build projects as part of floating floors over timber joists. They are compatible with various Hush-Systems that exceed the current Building Regulation requirements of Part E (England and Wales), Part H (Scotland), and Part G (Northern Ireland). Each strip consists of a double layer of 10mm Hushfelt™ resilient layer factory stapled to hardboard slats.

Specifications

Application	Directly over timber joists
Comprises	140mm x 50mm hardboard slats Double layer of 10mm Hushfelt™ resilient layer
Overall Strip Dimensions	25mm deep x 50mm wide
Weight per 1m	0.6 kg
Overall nominal thickness	25mm
Overall thickness in use	20-21 mm
Compatible Hush-Systems	Hush-System 1, Hush-System HF25, Hush-System HF25 Advanced
Accessories	Hush-Seal 20 Perimeter Seal, Hush-Bond Panel Adhesive

Performance

The Hush-Felt 25 Joist strips provide excellent acoustic performance. Typical results include an impact sound insulation of 50 dB, airborne sound insulation of 58 dB, and a CTR of 52 dB. These results are based on Hush-System HF25 Advanced test results incorporating Hush-Panel 25 Resilient Joist Strips.

Features and Benefits

• Affordable alternative: Provides a cost-effective solution for achieving impact sound insulation between separating floors
• Wide range of applications: Suitable for use in refurbishment and new build projects as part of floating floors over timber joists
• Compatible with Hush-Systems: Works seamlessly with various Hush-Systems that exceed current Building Regulation requirements
• Double layer construction: Consists of a double layer of 10mm Hushfelt™ resilient layer factory stapled to hardboard slats for enhanced performance
• Easy installation: Quick and easy to install, saving time and effort during construction
• Excellent acoustic performance: Provides exceptional sound insulation by reducing impact noise transmission
• Durable and long-lasting: Ensures a reliable and long-lasting sound insulation solution
• Enhanced comfort: Helps create a quieter and more comfortable living or working environment
• Versatile usage: Can be used in various applications, including residential, commercial, and educational buildings
• Environmentally friendly: Made from recycled materials, contributing to a sustainable construction approach
• Improved indoor air quality: Does not release harmful chemicals, ensuring a healthier indoor environment
• Fire-resistant: Provides an additional layer of fire protection, enhancing overall safety

Applications

• Residential Buildings: Hush Felt 25 Acoustic Joist Strip is used in residential buildings to reduce impact and airborne sound transmission. It is ideal for use in floors, walls, and ceilings to improve the acoustic performance of the building.
• Commercial Buildings: In commercial buildings, this product is used to create a quiet and peaceful environment. It is commonly used in offices, restaurants, hotels, and other commercial spaces to reduce noise levels.
• Industrial Buildings: In industrial settings, Hush Felt 25 is used to reduce noise from machinery and other loud sources. This helps to create a safer and more comfortable working environment.
• Education Institutions: Schools, colleges, and universities use this product to create quiet study and learning environments. It helps to reduce noise transmission between rooms and floors.
• Healthcare Facilities: In hospitals and other healthcare facilities, Hush Felt 25 is used to create a quiet and restful environment for patients. It also helps to maintain privacy by reducing noise transmission between rooms.
• Recording Studios: Hush Felt 25 is used in recording studios to improve sound quality by reducing background noise and echo. It helps to create a clean and clear sound environment for recording.
• Home Theatres: This product is used in home theatres to enhance sound quality by reducing echo and background noise. It helps to create a more immersive and enjoyable viewing and listening experience.

Installation

1. Lay the strips end to end with the hardboard pads facing upwards. Staple through the Hush-Felt into the tops of the joists using 16mm staples. Leave space for a perimeter noggin at the end of the joist runs, onto which a length of Hush-Felt 25 should be installed.
2. When planning the floor layout, leave a 10-15mm expansion gap around all perimeters. Apply a snake of Hush-Bond Panel Adhesive onto each of the hardboard pads and lay the flooring boards on top in a broken bond pattern. At the same time, glue the flooring boards together at all tongue and groove joints.
3. Press Hush-Seal 20 Perimeter Seal into the perimeter expansion gap to ensure that the floor floats freely from the walls, maintaining acoustic isolation.

Do not use any other fixings when installing the floating floor, as they can negatively impact performance. Skirting should be installed with a minimum clearance of two or three millimeters from the floor surface (PCT only).

Certifications

• Building Regulations Document E compliant

Equivalent/Related Products

• Sound Barrier - SB Range

Equivalent Brands

• Sound Barrier

About Hush Acoustics

Hush Acoustics is a leading manufacturer of acoustic products, specializing in sound insulation solutions for the construction industry. With a focus on innovation and quality, Hush Acoustics offers a wide range of products designed to meet the highest standards of acoustic performance.

HSH-1042 -Datasheet 1 HSH-1042 -Datasheet 2 HSH-1042 -Datasheet 3

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This is subject to change given the current COVID pandemic and lack of drivers servicing the UK. We will do our best to work with all orders that may be in affected areas.** Extra delivery charges may apply to orders in Scotland and the following postcodes**

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PREFERED DELIVERY TIMES

We offer this service to alleviate confusion for you and reduce communication for us all. It gives us an idea on when you would the order to be delivered. It is NOT a garaunteed delivery date. .

We understand scheduling of larger materials to your project is important, thus having your preference is very helpful for us. Please note this works in tandem with the availability of the product. We can NOT fulfill any orders before the avability days set on the product, even if the date insert tool allows it.

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PRODUCT DELIVERY TIMES

The vast majority of our orders are dispatched within 2–5 working days. However, if you need a customized or bespoke item, things will take longer to arrive. Some goods are on allocation or short supply as a result of COVID 19 and the Brexit. We may be forced to offer an equivalent high-quality substitute product at no extra cost to our customer from time to time.

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On weekdays, our cut-off time for purchases is 1 p.m. Orders must be placed by 1 p.m. on Monday through Thursday to be delivered the next day if they are applicable for next day. For example, an order placed after 2 p.m. on Friday will be sent out on Monday afternoon (if it is not too late).

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