Wood and metal are used in the southern part of north america slate in the northeast wood in the midwest and tile in the southwestern part of north america.
Roof material history.
But if the roof is readily visible the alternative material should match as closely as possible the scale texture and coloration of the historic roofing material.
The characteristics of a roof are dependent upon the purpose of the building that it covers the available roofing.
Roofing material is the outermost layer on the roof of a building sometimes self supporting but generally supported by an underlying structure.
A roof is part of the building envelope.
The roof s necessity has bred its ubiquity and by extension fostered a strong market for roofing materials ranging in performance and physical characteristics.
Now in the 21st century the quality and durability of building materials is becoming increasingly important for the value minded home owner that can appreciate the superiority of clay roofing products.
Asphalt shingles or ceramic tiles are common substitute materials intended to duplicate the appearance of wood shingles slates or tiles.
Those materials have a long history and their evolution has been largely driven by performance.
These roofs are installed as thin sheet materials 0 030 30 mils to 0 060 inches 60 mils thick and are applied to the roof in a single layer.
The roof structure is also likely to be the oldest and least altered part of a historic building which can yield important information about its age and significance.
Sloping roofs come in many different varieties.
Although people generally still use the most available materials for the region.
Being made of synthetic rubber or polymer they are flexible and elastic and can handle temperature changes and some impact types better than built up roofs.
Take a look back at how roofing has evolved.
The outer layer of a roof shows great variation dependent upon availability of material and the nature of the supporting structure.
Most of the changes in roofing materials have developed in the last 200 years.
A building s roofing material provides shelter from the natural elements.
A roof is the top covering of a building including all materials and constructions necessary to support it on the walls of the building or on uprights providing protection against rain snow sunlight extremes of temperature and wind.
The fact that so many historic roofs have survived for centuries is a testimony to the design materials and skills used on traditional roofs even though few would fully.