Reusable insulated roof system and method

A roof assembly comprising a roof system and a roof deck, wherein the roof system is loosely laid on top of the roof deck, and wherein the roof system comprises:

• a cellular glass insulation layer;
• and
• a waterproofing layer,
• wherein the waterproofing layer is loosely laid above the cellular glass insulation layer;
• wherein the cellular glass insulation layer comprises one or more layers of cellular glass insulation material;
• and
• wherein the uppermost layer of cellular glass insulation material has a protective coating on its uppermost surface, such that the protective coating forms an upper face of the cellular glass insulation layer and is positioned between the cellular glass insulation layer and the waterproofing layer.

A roof assembly comprising:

• a roof system comprising:
• a cellular glass insulation layer;
• and
• a waterproofing layer,
• wherein the waterproofing layer is loosely laid above the cellular glass insulation layer;
• wherein the cellular glass insulation layer comprises one or more layers of cellular glass insulation material;
• and
• wherein the uppermost layer of cellular glass insulation material has a protective coating on its uppermost surface, such that the protective coating forms an upper face of the cellular glass insulation layer and is positioned between the cellular glass insulation layer and the waterproofing layer;
• a roof deck;
• and
• a vapor barrier,
• wherein the vapor barrier is positioned between the lowermost layer of cellular glass insulation material and the roof deck, and
• wherein the cellular glass insulation layer is loosely laid onto the vapor barrier.

A method of installing a roof assembly, the method comprising:

• (i) installing a cellular glass insulation layer to a roof deck, wherein the cellular glass insulation layer comprises one or more layers of cellular glass insulation material;
• (ii) coating the uppermost surface of the uppermost layer of cellular glass insulation material with a protective coating;
• (iii) loosely laying a waterproofing layer onto the protective coating, wherein the waterproofing layer comprises one or more layers of waterproofing material;
• and
• (iv) positioning roof ballast directly or indirectly abutting the upper surface of the waterproofing layer.

A method of uninstalling a roof assembly comprising a roof system and a roof deck, wherein the roof system is loosely laid on top of the roof deck, and wherein the roof system comprises:

• a cellular glass insulation layer;
• and a waterproofing layer, wherein the waterproofing layer is loosely laid above the cellular glass insulation layer;
• wherein the cellular glass insulation layer comprises one or more layers of cellular glass insulation material;
• and wherein the uppermost layer of cellular glass insulation material has a protective coating on its uppermost surface, such that the protective coating forms an upper face of the cellular glass insulation layer and is positioned between the cellular glass insulation layer and the waterproofing layer, the method comprising:
• (i) if present, removing a roof ballast;
• (ii) removing the waterproofing layer;
• (iii) removing the cellular glass insulation material coated with the protective coating;
• and
• (iv) if present, recovering the cellular glass insulation material not coated with the protective coating.