There are a number of frequently asked questions or (FAQ’s) pertaining to the
roofing industry. These are just a few of the questions we often hear.
There are so many types of roof systems and membranes available. Most membranes
are specifically suited to a particular structure or situation. This can depend
on how much foot traffic there will be, how much and what kind of Mechanical
Equipment is on the roof, will the roof be highly visible and is solar
reflectivity an issue.
It is always good for long term results, to tear off an existing roof system.
You should always tear off the existing roof if your insulation is wet or
deteriorated, or if there is any concern about the condition of your underlying
structural deck. Moisture trapped within the old roof will, in most cases,
prematurely deteriorate your new roof system. The drawbacks to a complete tear
off are a higher cost and possible inconvenience or disruption of your interior
occupants. If the existing construction is sound and you want to save money, you
can often leave the roof in place and install new materials over it. This is
subject to city codes and restrictions. Excalibur Roofing’s non-destructive
moisture detection instruments can help determine the condition of your existing
insulation.
Most roofs that are now ready for replacement were built before energy
conservation was important. Although added insulation will increase the cost of
your roofing project, often the energy savings over the life of the roof will
cover the cost of the added insulation. We will check the building codes in your
area to determine the required “R” value for roofs of new buildings, or if your
existing roof is torn off prior to replacement.
This depends on the roof design and how well it is maintained. Your new roof
must be properly maintained. Proper maintenance includes making sure the
drainage is clear of debris, maintain a good quality coating on the membrane,
and keep flashings in good condition. This will extend the useful life of your
roof.
Either type of roof, if designed and installed properly, will perform well. The
costs are dependant on the circumstances of your project. The three main
considerations are the size, detail work involved, and the accessibility to the
site. Often a single-ply membrane will be the roof or choice. There are numerous
types of single-ply systems available and different methods of installation for
each. Please feel free to discuss your situation with any of our roofing
specialists.
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