Several new treatment methods — including heat treatment and silica impregnation — promise similar performance without toxicity concerns. These products are not yet widely available, but they offer the potential for healthy and feasible wood foundations.
Energy effirciency:Insulation will need to be added to treated wood foundations, and the full criteria implications of the insulation strategy must be carefully considered.
Walls serve multiple functions in a building: they are key elements of the structure; they support the windows and doorways that physically define a space; they are a very important part of the building’s energy efficiency; and they dominate the visual aesthetics. It is no wonder that many people come to define their home by the kind of walls it has.
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A methodical comparison of walls is made difficult by the multiple functions of the wall assembly and the variety of ways in which structural, insulation, and finishing components can be arranged. For the purposes of this blog, we will consider wall systems in three categories:
1. Structural systems: Structural walls can be skeleton frames or monolithic systems. Both types of structural walls may require insulation and/or cladding to complete the system.
2. Insulation: Insulation provides thermal control and may be located within a wall structure and/or on the exterior or interior side of the wall. The insulation may provide a structural role, but often does not.
3. Cladding: Cladding materials provide a water control layer and aesthetic finishing role on the exterior side of a wall and a finishing role on the interior.