Total cost of ownership over a building's life
Capital cost is one year. Operating cost, maintenance and replacement run for fifty. An owner who keeps the building should compare all four.
The four costs
Capital is what it takes to build. Operating is energy, water and the service contracts. Maintenance is what has to be repaired or repainted. Replacement is what has to be renewed within the life of the building.
A developer who sells at completion only sees the first. An institution, a housing authority or an owner-occupier sees all four, which is why those owners reach different conclusions from the same numbers.
Where an envelope changes each one
Operating cost falls with the load. Maintenance falls where materials do not rot, warp or corrode. Replacement is pushed out where thermal and moisture cycling are reduced. Capital may rise or fall depending on what the envelope removes elsewhere — structural steel, an insulation trade, HVAC capacity.
Guardian's own framing of this is that energy efficiency is a value add that can command a premium price, and that a durable envelope reduces maintenance costs over time.
What Guardian publishes
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Guardian states the owner's or operator's energy efficiency is a value add and can command a premium price.
Source · Differentiation sheet
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By reducing thermal stress and moisture infiltration, a well-designed thermal envelope can extend the lifespan of building materials and structural components, reducing maintenance costs over time.
Source · Differentiation sheet
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Guardian's limited warranty covers conformance to specification and freedom from material defects for one year from delivery, under standard terms and conditions.
Source · 3-Part Specification 1.10
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Written by Data Subsystems, for Guardian Structural Technologies. Last updated .
Drafted from Guardian Structural product literature and published building-science sources. Awaiting Guardian technical review. Confirm any figure against the current product documents or ask us before you rely on it in a design.