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2. Styrofoam - Wikipedia

   en.wikipedia.org/wiki/Styrofoam

   Styrofoam insulation extruded polystyrene foam (XPS), owned and manufactured by DuPont. Styrofoam is a genericized trademarked brand of closed-cell extruded polystyrene foam (XPS), manufactured to provide continuous building insulation board used in walls, roofs, and foundations as thermal insulation and as a water barrier.

3. Rigid panel - Wikipedia

   en.wikipedia.org/wiki/Rigid_panel

   It provides acoustic insulation in addition to thermal. Most forms of rigid board can be cut with utility knives. They are all are water resistant, some more so than others (but none should face prolonged exposure to water). They will not rot. Extruded polystyrene (XPS) type highly resists air infiltration. It is virtually airtight if installed ...

4. Structural insulated panel - Wikipedia

   en.wikipedia.org/wiki/Structural_insulated_panel

   SIP is a sandwich structured composite, consisting of an insulating layer of rigid core sandwiched between two layers of structural board. The board can be sheet metal, fibre cement, magnesium oxide board (MgO), plywood or oriented strand board (OSB), and the core can either be expanded polystyrene foam (EPS), extruded polystyrene foam (XPS ...

5. Polystyrene - Wikipedia

   en.wikipedia.org/wiki/Polystyrene

   Extruded polystyrene foam (XPS) consists of closed cells. It offers improved surface roughness, higher stiffness and reduced thermal conductivity. The density range is about 28–34 kg/m 3. [55] [56] Extruded polystyrene material is also used in crafts and model building, in particular architectural models. Because of the extrusion ...

6. List of insulation materials - Wikipedia

   en.wikipedia.org/wiki/List_of_insulation_materials

   This is a list of insulation materials used around the world. ... Polystyrene board [6] 2.54: 1 0.88: ... Extruded expanded polystyrene (XPS) low-density 2.54: 1

7. Geofoam - Wikipedia

   en.wikipedia.org/wiki/Geofoam

   Stacked blocks of geofoam at a construction site. Geofoam is expanded polystyrene (EPS) or extruded polystyrene (XPS) manufactured into large lightweight blocks. The blocks vary in size but are often 2 m × 0.75 m × 0.75 m (6.6 ft × 2.5 ft × 2.5 ft).