| Installing a roof is a very important
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| | the roofing as well as some flexibility.
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| aspect of home and building construction
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| | Metal Roofing
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| since almost all structures need
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| | Metal roofing is no longer limited to
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| something to serve as protection from the
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| | those leaky sliding panels attached
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| elements. So it is not surprising how
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| | together rather insecurely and then
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| roofing has developed over the course of
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| | screwed or nailed to a frame. Today,
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| history and even just over the past two
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| | there are metal roofs that have more
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| decades. As more homes are being built,
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| | secure concealed clips that can be
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| more options of roofing have sprouted as
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| | expanded or contracted.
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| well. This fills several requirements,
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| | Perhaps the most important factor for
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| not only of function, but also of
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| | choosing metal roofing is its life
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| aesthetics. Following are some of the
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| | expectancy: metal does not decompose or
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| roofing options that a home owenr can
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| | break down even with exposure to extremes
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| select from.
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| | in weather. Some metal roofing may have
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| Single-Ply Roofing Systems
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| | warranties of up to 50 years. The
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| Singly-ply roofing, as its name suggests,
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| | disadvantage with metal however is the
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| is comprised of a single layer make of
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| | greater possibility of leaks compared to
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| plastic or elastic material. Because
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| | other roofing options. If metal is not
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| there is only one layer, this type of
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| | installed properly, leaks are likely to
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| roofing is thick. There are two types of
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| | occur.
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| single-ply roofs, first, thermoset
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| | The Built-up Roof
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| membranes whose seams are sealed using
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| | If there is one roofing option that is
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| adhesives and second, thermoplastic
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| | considered a classic, it would most
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| membranes whose seams are welded using
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| | definitely be the built-up roof system.
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| heat or a solvent. There are three types
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| | Developed for over a century ago, this
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| of attachment for single-plys -
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| | type of roof has a time-tested reputation
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| ballasted, loose-laid and fully adhered.
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| | that makes it almost an automatic choice
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| Because of its light weight, the
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| | for a lot of home builders. Of course,
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| single-ply is often used for re-covering.
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| | this is not a perfect roofing option as
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| They are also quite inexpensive.
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| | it can pose some considerable
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| Single-ply roofs may be sensitive to
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| | limitations, but a lot of those who chose
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| certain substances and great care should
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| | this type have seen it work quite well.
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| be taken when choosing from different
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| | The built-up roof is generally preferred
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| kinds of single-plys. EPDM and PVC-based
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| | in places of high traffic and when there
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| materials can be damaged when exposed to
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| | is a possibility for the roof to be
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| oil, jet fuel, and cooking grease. When
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| | subjected to mechanical abuse. The
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| there are such emissions in the area, the
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| | built-up roof's membrane is generally
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| chemical composition of the single-ply
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| | thicker and stronger compared to most
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| membrane should be checked carefully.
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| | other roofing options with its multiple
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| Modified-Bitumen Roofing Systems
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| | layers and gravel surfacing. Since this
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| Modified-bitumen roofs have similar
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| | is a popular choice, it is usually easy
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| advantages and disadvantages as built-up
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| | to find a contractor who can handle both
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| roofs. However, one great advantage of
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| | installation and repair of this roof type
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| this roofing option is that it performs
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| | in most locations.
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| significantly better during cold weather.
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| | The main disadvantage with built-up roofs
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| This type of roofing has been developed
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| | is inflexibility. The roof may be subject
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| to become flexible when the temperature
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| | to damage due to structural or thermal
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| is low. They can adapt to temperature
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| | movement. A long building would need
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| changes better than the built-up roof.
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| | additional roofing support to prevent the
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| There are two type of modified-bitumen
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| | roof from damage due to contraction. The
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| roofs - the plastic-based ones (APP) and
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| | compression due to cold temperatures or
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| the rubber-based ones (SEBS and SBS). The
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| | stretching due to hot temperatures may
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| plastic-based membranes are usually
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| | also take a toll on built-up roofs. Much
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| installed using torches while the
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| | care is needed if these factors are
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| rubber-based membranes are installed
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| | pronounced in a particular area.
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| using cold adhesives or hot asphalt. Most
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| | There are several other roofing options
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| modified-bitumen roofs already have
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| | these days. It is just important to
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| granulated surfaces so they are lighter
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| | choose the right type for the right
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| than built-up roofs that have gravel
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| | structure. Whether it is new or
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| surfaces. Modified-bitumen roofs may also
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| | traditional in style, good roofing should
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| be added as cap sheets on top of existing
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| | serve its purpose of providing good
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| built-up roofs. This adds redundancy to
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| | shelter and protection.
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