Best Re-roofing (Retrofitting) Metal Roofs in Spring Hill

Most retrofitting metal roofs are built over the current equipment. As a result, you should involve your mechanical engineers early to determine the airflow ventilation in the spaces that are between the old and new roofs. You also need to give the equipment access for replacement, repair, and maintenance.

You should never overlook this step when working on retrofitting metal roofs. The process entails preparing the checklist of all the current conditions on your old roof. It entails inspecting the underside of the roof and then take note of the span, spacing, size, and type of the current supports and joists. You should also be aware of the ability of the current support system to take on the imposed negative and positive loads, and the ability of the building to withstand the lateral wind forces that the retrofit’s cladding and framing system create. Lastly, be aware of the collateral loads that have been added from the time the building was constructed for the first time.

There are four various types of metal re-roofing projects. These include the pure architectural non-structural system, structural architectural standing seam, functional standing seam, and the through-fastened. The through-fastened roofs are pre-engineered and generic metal roofing systems. Nowadays, it is easier to replace these materials than install new ones. The functional standing-seam roofs work perfectly for low-slope and low-cost applications. The roofs have a trapezoidal-shaped main ribbed seam and you install them over an open framing system and are designed for a higher carrying capacity of rainwater for the low slope applications. The roofs are more of utilitarian projects than the aesthetics.

The structural architectural panel system is the looker and is designed for the high slope application over an open frame system. A vertical-ribbed standing seam type of roof is specified in the applications where the aesthetics are crucial and the roof acts as an important design element. The pure architectural nonstructural roof system is also designed for the high slope applications but they are specified for appearance as the sole purpose.  The roofs have a good look but with a skin-deep beauty because these systems offer no structural strength and you have to install it over metal decking or solid wood.

Virtually all modern roofs use a secondary and primary structural grid layout construction regardless of the type of system and support method that is employed. The retrofit framing system utilizes a structural grid that imposes a sequence of concentrated load points on the current roof. You have to match the two grid systems to help you maintain the structural integrity of the existing roof.

When you add a new metal roof on top of an existing one, you will obviously increase its dead weight. Our structural engineers will advise you whether you need to beef up the current framing structure to avoid exceeding the building’s design load. Most of the re-roofing buildings need remedial works. It is more applicable to flat roofs that are designed to carry the load uniformly and consistently yet you are replacing them with sloped roofs especially in snow loading areas. You also need to pay special attention to the roof valleys because the drift loads tend to increase significantly in the valleys.

You also need to pay close attention to the design of the system regarding the anchoring systems that are used in securing the current structure. Select anchors based on the wind uplift values, rooftop pull-out testing, and the manufacturer specs. The anchor types depend on the kind of framing (steel or wood), the thickness of the concrete structural support, and the moisture content in the current substrate. We make sure that the anchors are corrosion resistant.

When the insulation necessities are coding issues, you have to install insulation over your ole roof. The insulation values of most old roofs are R6 to R10. However, it is good to make insulation that has a minimum value of R-30 in modern times. Lastly, do not use vapor barriers in your upgrading as it can trap moisture in the current roof. Spring Hill Metal Roofing Elite Contracting Group is the best brand for your retrofitting project. It tells you why we are the best brand for re-roofing metal roofs in Spring Hill, FL.