Today we are going to identify which is better option for your next roof project.
Ideally when considering a new roof system, You want to ensure that it keeps you
– Dry and protected from the elements
– Aesthetically pleasing
– Long lasting performance
In order to hit all 3 targets we have to assess,
– Roof structure type
– Load capacity
– Existing conditions of structure
– Local municipality codes
Option 1. Overlaying a existing roof with new shingles
The upside is that you can save money by
– Not requiring a big dumpster
– Not as much labor involved
The downside is you run the risk of
– Roofing over rotted areas
– Not replacing critical flashing components
– Overloading the roof with excessive weight causing the structure to bow.
Option 2. Stripping existing roof off and Replacing all new roof components
The upside is that
– You can assess and replace rotted sheathing/decking
– Replace all new flashings and vents
– Ensure your roof will support new roof load
– Place shingles on a smooth uniform surface
The downside is
– Extra expense on dumpster
– More labor required
– Longer job cycle
Overall it is highly recommended to to a full roof replacement over a overlay roof system simply due to the upsides stated above. If you want your new roof to last and want a once and done solution, Have your roof replaced by a reputable licensed roofing company.
