Roof Structural Snow Load & Safety Threshold Tool

Most 16' on-center rafters are engineered for 30–40 psf (pounds per square foot). Knowing these limits allows you to position yourself as a technical expert when discussing the 'Saturated Snow Weight' that leads to catastrophic structural failure and emergency tarping jobs.

Charge by the man-hour with a 4-hour minimum. Factoring in harness time and the liability of shingle damage in freezing temps ensures your business is protected while offering a high-demand, high-margin winter service.

Technically yes, but the faster shedding of metal reduces the time the structure is under stress. However, you must warn clients about 'Shock Loading' where a massive avalanche of snow drops suddenly—recommending staggered snow guards as a mandatory structural protection.