Strapping a roof for metal roofing

The choice is between installing the metal roofing panels over battens or over solid decking. Battens are also sometimes called “ strapping ,” “stringers,” or “ purlins”. Many people wonder why this condensation was not an issue with the early metal roofs , nor is it usually an issue with larger buildings. Metal Roofing over shingles. Proper installation of metal.

This video shows the full process of metal roofing installation The process shows all the stages from laying.

The kind of support required varies with the type of metal roofing product. Roll formed products such as, Ameri -Cana, Pocket Rib, Security Rib, HF and ior HF are structurally able to carry reasonable loads, thus they can either be installed over wood strapping or solid . On a new construction with. Then use 1”x4” wood strapping to receive the steel roofing. All screws supplied by Ideal Roofing are self-tapping and can go through the metal. If pre-drilling, use a fine drill bit and clean up the burrs from around the holes by using a . My husband and I would like to install metal roofing.

There are systems that interest us. One is smaller sheets that have a polyester coating and are applied over strapping.

The other is metal shingles with a kynar coating that are applied directly to the roof. An finally, there are some which must be installed only over solid decking. So, the first step is in choosing the metal roof you want and then checking on its installation . The vast majority of installations of the metal roofing systems produced by my company are over existing shingles.

A steel roof is long-lasting and withstands inclement weather. You can order steel roofing from a metal roofing distributor. You can buy the tools needed to install a steel roof from a. In the local area (London, ON) the two metal roofing companies I have talked to so far have two different approaches to . To ensure the required water drainage of properly installed metal roofing panels a minimum pitch of.

Installation Instructions. If installing over existing shingles the roof should be strapped with minimum 1” x 4” strapping at 24” centres. This can be done and in fact is quite common.

It can create an uneven look to the surface of the roof due to the unevenness of the pre-existing roof shingles and strapping. During inspections I often find this method of installation, but point it out as a. I was planning on putting plywood over the rafters and crossing the rafters with a 2-by-every inches as strapping to secure the metal roof. And if the strapping should be anchored through the particle board to the roof trusses, or if it can be just nailed through into the particle board? The metal manufacturing companies have charts for calculating frequency of purlins and of fasteners for any given load conditions.

I understand that a throughfastened roof is easier to install and therefore cheaper , but I keep hearing that the screws will eventually back out of the panels and that their holes will leak. I also see in the comments section that some people screw through-fastened roofs into 1x strapping installed .

Most codes now allow no more than two layers of roofing before requiring a complete tear-off. So, if your roof has two layers, it may require a complete tear-off , even though steel is lighter than asphalt. Codes vary, so call your local building department to know how to install metal roofing over shingles properly, code- wise. This finding is based on the use of a strapping system of four inches between . Your metal steel roofing installation is paramount when it comes to the long term performance of your new roof. EDCO metal steel roofing is anchored directly to your roof with no strapping.

This allows you to have a roof that can be walked on, whereas with a strapped roof you need to step exactly where the roof is strapped.