Metal Roofing
Re-Roofing With Metal Roof covering We get asked this concern at all times: Can steel roof covering can be mounted over old fiberglass or asphalt roof shingles?
The answer is: “Yes it can.” As well as by doing so, you conserve in the labor as well as trouble of detaching the old roof covering and you won’t be contributing to loading our landfills. Another included benefit is that the layers of your old roofing will certainly further insulate your residence. Metal is the best choice as a result of its extremely reduced weight per square foot and also its distinct design. Steel roof covering evaluates less than one extra pound per square foot. Asphalt shingles can evaluate up to four extra pounds per square foot depending on the brand name.
If you do not want to take our word for it get in touch with your regional building department. In some areas building authorities just enable a re-roof over one layer of shingles. Various other locations will certainly enable you to re-roof over 2 layers. In many cases it’s not also a problem if you are only discussing one layer of roof shingles.
Referencing Section R907.3 of the 2006 International Residential Code Book ® best answers this inquiry, it checks out as complies with:
” Full and separate roofing systems, such as standing joint steel roof covering systems, that are developed to send the roofing tons straight the structures architectural systems and that do not rely upon existing roof coverings as well as roofing coverings for support, shall not require the elimination of existing roof treatments.”
When you decide to proceed with this task there are a number of safety measures regarding the underlying product:
If there are any kind of existing roof leaks, you require to resolve them and also change any kind of rotten sheeting or rafters. If there are any signs of issues created from the previous roof weighing excessive, they must likewise be attended to. This could consist of things like sagging decking or twisting trusses.
A number of options:
A layer of underlayment installed in addition to the existing tiles will assist maintain the granules of the old shingles from rubbing versus the rear of the metal and also causing possible rust. The market requirement for underlayment is commonly thought of as really felt paper (tar paper) but there are likewise many newer synthetic underlayments that are developed to work well with metal roofing. Standard tar paper has a tendency to stay with the back of metal roof covering. This can cause the paper to tear when the steel roofing increases or gets as it is developed to do. The brand-new artificial underlayments do not have this problem as their design much surpasses the felt paper criteria.
“E-Foil” or aluminum foil encountered, bubble wrap type, reflective obstacle insulation can additionally be used as a cushion between the existing roof as well as the new metal roof. The reflective barrier insulation can also minimize your air conditioning expense throughout the summer months by mirroring heat far from your houses roofing system. Glowing obstacle insulation will certainly perform the best when utilized with a corrugated panel that has a built in airspace because of the corrugation. The airspace will likewise allow natural venting to take place.
I hope this post has actually been handy. However below’s one more thing for you to take into consideration: Do you realize that if you pick metal roof covering that this will likely be the last choice you make regarding the roofing system of your residence?
Receive a free Metal Roofing Analysis and all the information that you need for your metal roofing project at www.guardianhome.com/tacoma-roofing/
