My Class A Has Aluminium Roof

If these are damaged missing or applied incorrectly leaks could occur.

My class a has aluminium roof.

Fm calls their acceptable risk systems class 1 while ul calls theirs classified insulated metal deck constructions. This is a system test that includes structural members such as beams trusses and roof deck. The tape seals most of it but the curved edges are a caulk seal. I didn t know anything about what types of materials were used on rv roofs.

They have support beams about every 2 feet. Ul and fm list many roof ceiling systems in their. But by including a particular underlying material it can meet the requirements for a class a roof. Time temperature ratings the third major roof system fire test is astm e 119.

An exterior fire retardant treated shake roof has a stand alone class b rating. Installing the aluminum roof on the motorhome. The next step after getting the plywood on the roof installed was to get the aluminum installed. I learned that the original roof was the edpm rubber roofing membrane and it was beyond repair.

On my 2000 hr endeavor the aluminum roof overlaps the top of the front cap. Doors windows office partitions railings skylight verandahs shop fronts structural glazing. After a suitable roof system has been selected appropriate specifications and drawings need to be prepared to help ensure that the roof designer s design concept is understood and executed by a professional roofing contractor. A french owned nepali company in kathmandu for world class aluminium fittings.

The thin flexible metal can t support much weight by itself so if you do go up on it be sure to be careful. Actually when a standing seam metal roof has a leak it is commonly at some type of flashing area. Common underlying materials include a type 72 roll roofing material also known as 72 pound felt or 72 pound capsheet material and a panelized gypsum product. Tested roof systems are fire classified class a b or c where the most fire resistant roof assemblies are class a and class c is least resistant.

The fate of many prematurely failed roofs is often set by poorly prepared documents figure 14. Watch the caulk in those curved areas as the flexing of the coach will cause early failure of the caulk. To get the aluminum up on the roof we stood two 10ft 2x4s a few feet apart against the side of the rv to make a ramp for the roll of aluminum to ride up. From my searching around the internet and reading various websites it seems like there s three main materials used for roofs on rvs.

It s not always exactly 2 feet but a metal roof is the only roof that has this quality. Building code fire resistance requirements building codes establish fire resistance requirements for roofs based on the type of construction e g concrete steel wood for the building.