Roofing is one of the most important aspects of home and building construction as most structures would need something to serve as shelter.
There are many type of roofing available for houses:
The Built-up Roof
The built-up roof is generally preferred in places of high traffic and when there is a possibility for the roof to be subjected to mechanical abuse. The built-up roof’s membrane is generally thicker and stronger compared to most other roofing options with its multiple layers and gravel surfacing. Since this is a popular choice, it is usually easy to find a contractor who can handle both installation and repair of this roof type in most locations.
Modified-Bitumen Roofing Systems
There are two type of modified-bitumen roofs – the plastic-based ones (APP) and the rubber-based ones (SEBS and SBS). The plastic-based membranes are usually installed using torches while the rubber-based membranes are installed using cold adhesives or hot asphalt. Most modified-bitumen roofs already have granulated surfaces so they are lighter than built-up roofs that have gravel surfaces. Modified-bitumen roofs may also be added as cap sheets on top of existing built-up roofs. This adds redundancy to the roofing as well as some flexibility.
Single-Ply Roofing Systems
Singly-ply roofing, as its name suggests, is comprised of a single layer make of plastic or elastic material. Because there is only one layer, this type of roofing is thick.
Metal roofing is no longer limited to those leaky sliding panels attached together rather insecurely and then screwed or nailed to a frame. Today, there are metal roofs that have more secure concealed clips that can be expanded or contracted. Perhaps the most important factor for choosing metal roofing is its life expectancy: metal does not decompose or break down even with exposure to extremes in weather.