In roofing a tear off removes all layers of shingles and underlayment from a roofing system.
Roofing layover vs tear off.
The tear off method is exactly what it sounds like.
Choosing the right strategy will save you money and make sure that the roof you get matches your buildings needs.
In general it is not a good roofing practice to overlay a traditional asphalt shingle roof versus a complete tear off and replacement with a new roof for the very reason you stated.
Roof tear off vs.
In just about every scenario you are going to be able to experience better overall results when you opt for a tear off versus a layover.
An overlay roof occurs when keep your existing roof as is choosing instead to shingle on top of it.
This is primarily because it is going to allow you to replace your aging roof instead of covering it up completely.
Higher costs on average a tearoff roofing job costs around 25 percent more than an overlay.
It s good to know that you can only choose this option if your roof has not been overlaid previously.
It takes a lot more labor to completely remove all the existing roofing material and then replace all the layers removed.
Tear off or re roof.
Dave law last updated january 24 2020.
The answer depends on what lies beneath when it s time for a new roof your options are to re roof over the one you have or tear the old one off and start from scratch.
Most codes allow two layers of shingles before tear off is required.
While some municipalities allow by code a second layer we do not recommend it.
What you need to know.
Here is a scenario we hear about all the time.
When the roofing company you hire tears off your existing roof and then puts on an entirely new roof.
To cover the old roof the missing shingles would be replaced before installing a new layer or the difference in thickness.
Replacing a roof is not what many people want to spend their hard earned money on.
A layover typically refers to adding a new layer of shingles over the existing shingles.
In our chicago area we almost always do a tear off.
If you don t take your roof down to the sheathing you will never know if you have proper underlayment or are experiencing sheathing rot or ice or water damage.
The old roofing also has to be disposed of properly which adds to the cost.
This contractor told me i don t need to tear off my existing shingles when we re do our roof we get it.
