When replacing your roof one of the most important items to take note of is how many layers of material are currently on your roof frame system. This is important because it will determine how much labor and disposal the job is going to take and the contractor can quote appropiatly.
Most roofs will have on average 1-3 layers of roofing material on their home. This happens because it is much cheaper to overlay a new layer of shingles than to tear everything off and install all new components.
This method of overlaying has many cons but homeowners opt to take their chances.
Some of the cons are
– Overloading roof frame structure causing it to bow
– Roofing over rotted areas
– Old flashing components rust out
– Pipe boots deteriorate
– Uneven roof surface
Above is an image of a home in midtown KCMO area where the roof had a total of 6 layers accumulated over many years. 5 composition layers of shingles and it originally had a wood shingle roof making it 6 layers to tear off.
