Sound-deadening drainage mat

A sound-deadening drainage mat, consisting of:

• a water permeable filter layer;
• an entangled net adjacent and joined to the water permeable filter layer, the entangled net having interstitial spaces therein configured and arranged to allow liquid to flow therethrough;
• and
• a sound-deadening layer adjacent and joined to the entangled net opposite the water permeable filter layer, the sound-deadening layer configured to reduce or eliminate sound that penetrates an exterior wall cladding;
• wherein:
• the water permeable filter layer is oriented adjacent the exterior wall cladding,
• the sound-deadening layer is oriented adjacent an interior framing system of a building wall, and
• the entangled net is oriented to allow water to flow through a region between the water permeable filter layer and the sound-deadening layer.

A method, comprising:

• placing a sound-deadening drainage mat between an exterior wall cladding and an interior framing system of a building wall, the sound-deadening drainage mat including:
• a water permeable filter layer,
• an entangled net adjacent and joined to the water permeable filter layer, the entangled net having interstitial spaces therein configured and arranged to allow liquid to flow therethrough,
• a sound-deadening layer adjacent and joined to the entangled net opposite the water permeable filter layer, the sound-deadening layer configured to reduce or eliminate sound that penetrates the exterior wall cladding,
• an adhesive layer coupled to the sound-deadening layer opposite the entangled net, the adhesive layer configured to secure the sound-deadening drainage mat to the interior framing system, and
• a release layer releasably coupled to the adhesive layer, the release layer configured to be removed prior to placing the sound-deadening drainage mat between the exterior wall cladding and the interior framing system of the building wall;
• wherein:
• the water permeable filter layer is oriented adjacent the exterior wall cladding,
• the sound-deadening layer is oriented adjacent the interior framing system,
• the entangled net is oriented to allow water to flow through a region between the water permeable filter layer and the sound-deadening layer, and
• the water permeable filter layer, the entangled net, and the sound-deadening layer are co-extensive.