For additional information about upgrading your roof with metal panels please contact us.
September 27, 2021
by Randy Tweedt
Some owners are concerned about replacing a roof because they dread the cost of removing the existing roof. This concern is valid in many low-slope roofing situations because the new roofing membrane might not be compatible with the existing one and could cause premature deterioration. There are, however, metal panels specifically designed to be installed directly over existing roofing. And many of these metal panel roof installation systems can be retrofitted over existing roofs made of metal or other materials. Avoiding the removal of the old roof obviously saves on cost. However, it also saves considerable time when installing the new roof. As an exposed-fastener metal roofing system, this retrofit application also requires fewer construction components, further streamlining the installation process.
Retrofit metal panels typically feature a membrane treatment that prevents rust or contaminants from the old building materials from transferring to the new panels. This is a versatile solution for both low- and steep-slope roofs (minimum slope: ½:12). Metal panel roof installation is very durable and can feature approvals for use in extreme weather locations, including Florida. Metal panels are available in a variety of colors that enhance the overall design of a building. Often, this “replacement metal over existing roofing” approach is the most cost-effective, even compared to some repairs. Additionally, new roofing is more likely to be eligible for a warranty, while repairs rarely, if ever, are.
Energy conservation is on the mind of many building owners and building code enforcement officials. Therefore, adding insulation when upgrading your roof is often required to adhere to building codes. In this case, applying zee-shaped sub-purlins over the existing roof system helps support a new layer of metal roofing. In between the sub-purlins, insulation can be added to meet or exceed current energy code requirements. This metal panel roof restoration also eliminates the need to remove the existing roofing while providing an added layer (or more) of insulation to improve the overall energy performance of the building. Insulated metal panels (IMPs) like MBCIs can help keep buildings cooler in summer and warmer in winter—conserving energy year-round.
Sub-purlin systems can fit any existing metal panel, support new panels, and be made to accommodate many types of insulation between the old and new roofs. They can also support or incorporate a variety of solar energy systems where desired. Roof panel options include a variety of profile shapes, textures, and colors to suit aesthetic preferences.
Any of these options are applicable to an existing metal roofing system. They can also convert other types of roofing systems to longer-lasting metal roofing or replace an existing roofing system altogether. Of course, engaging the services of a design professional (architect, engineer, etc.) is always appropriate when considering your options. They can help properly assess existing building conditions and recommend the best overall metal roofing solution from metal panel manufacturers.
To learn more about upgrading your roof system with more durable, longer-lasting, better-draining, and easier-to-maintain metal roofing systems, contact your local MBCI representative.
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