Measure your roof so you can be sure you buy the right amount of shingles.
How to put architectural shingles on a roof.
If you look at the picture above you can see the difference.
This row should project half an inch 1 27 centimeters over the eaves.
How to install architectural shingles or better stated how not to install is an explanation of how to and how not to install architectural shingles.
Three tab shingles are a constant thickness while architectural shingles have multiple layers that create an uneven surface.
Architectural roof shingles and tabbed shingles are both roof shingles but when it comes to nails they are different.
Put on the nails so that shingles are firmly in place.
In architectural shingles you need to use longer nails to get through the thicker portion of the shingle.
Nail down the shingles as you go along.
At no place on your shingle roof should the shingles line up exactly with the shingles in the previous row.
Lay one row of shingles starting from the lower left corner of the roof.
It generally takes three packs of shingles to cover 100 square feet 9 29 square meters.
The quick answer is yes you can re roof architectural shingles over existing architectural shingles however you must check with the shingle manufacturer as well.
Architectural shingles are another option and are installed the same way as 3 tab shingles but give your roof more of a 3 d effect due to their varied shapes.