Impact 18

Monarfloor® Impact 18 system is designed to reduce sound transmission through concrete floors.

Monarfloor Impact 18 consists of an 8mm layer of LRAC foam bonded to 18mm P5 V313 moisture resistant chipboard.

When installed as part of a complete sound reduction system it enables a concrete floor to meet the sound transmission regulations of Part E.

Monarfloor Impact 18 sound transmission performance
Treated floor: Complies with Robust Details E-FC-1

Alternative concrete deck construction - 1:

Monarfloor Impact 18 system
optional VCL
>300kg/m² hollow core concrete planks with 80kg/m² sand/cement screed or 40mm proprietary screed
75mm void formed by metal frame suspended ceiling system
>10kg/m³ absorbent mineral wool quilt
>8kg/m² gypsum board ceiling

Alternative concrete deck construction - 2:

Monarfloor Impact 18 system
VCL (optional)
>300kg/m² cast in-situ concrete with 80kg/m²sand/cement screed or 40mm proprietary screed
50 x 75mm timber battens
>10kg/m³ absorbent mineral wool quilt (optional)
resilient bars perpendicular to batten direction
>8kg/m² gypsum board ceiling 75mm below underside of sub-floor

Monarfloor Impact 18 Product Data
Overall board dimensions	2400mm x 600mm x 26mm thick
Foam thickness	8mm
Foam composition	Recycled Low Resonance type I Acoustic Chip (LRAC) foam

The acoustic insulant shall be:

Monarfloor Impact 18, manufactured by Icopal Ltd, Lyon Way, St Albans, Hertfordshire, AL4 0LB.

Install Monarfloor Impact 18 in accordance with relevant specification clauses and design details.

Fix Monarfloor Acoustic Flanking Band at the floor perimeter.
Lay Monarfloor Impact 18 over levelling screed, in broken bond pattern, applying adhesive to all tongued and grooved panel joints.
Install skirting and trim off excess Flanking Band.

For advice on treatment of services and penetrations consult Services in our Design section or our brochure.