As heat leaks out through the roof it can melt a layer on the bottom of the snowpack letting it slide.
The mushroom metal thing on roofs.
The guy who called them snow guards was correct.
They are to prevent snow drifts from falling on people.
Metal shingles are formed with an airspace between the metal and the roof deck.
The hooks come in all types of designs and are designed to keep the snow on the roof.
These oversized roof edges create a dramatic effect one that adds elements of whimsy and fantasy to any home while retaining a strong sense of harmony with nature.
That airspace acts as a thermal break to stop the conductive flow of heat from the surface of the roof into the attic.
It has nothing to do whatsoever with ice dams.
Ice dams are caused by insulation ventilation.
They are usually found on slate and clay roofs and commercial buildings where there is a lot of foot traffic.
It s no surprise that mushroom roofs are most often found on cottages and other rural properties.
Metal roofs can last 30 to 50 years longer than other roofing materials saving you money in the long term.
Plus cool metal roofing uses a reflective solar coating designed to minimize heat buildup and reduce air conditioning costs.