Roofers started to put layers of shingles in shapes on top of the first layer to add dimension which started the idea of the dimensional shingles.
How to roof with dimensional shingles.
How to install shingles on a roof step by step.
But the old shingles looked flat and had no depth.
The term dimensional is merely the over arching category that architectural shingles fall into.
Where you meet a chimney or side wall install step flashing.
These chalk lines will serve as a guide for subsequent even numbered rows of shingles and odd numbered rows respectively.
In some cases you ll have to remove the siding.
Snap a vertical chalk line from the inside edge of the first shingle on the second row to the top of the roof and from the inside edge of the first shingle to the top of the roof.
Of course if you are not familiar with your options this decision can be a bit harder.
This is just a dem.
Dimensional roof shingles have evolved into many different designs shapes colors and sizes.
Apply a shingle then a piece of flashing then a shingle and so on so that each piece of flashing rests on top of the lower course and is covered by the upper course.
Put another way an architectural shingle is fancier designed dimensional shingle.
This is a roofing demonstration of how to install shingles on one side of your roof diy.
If you are in the process of replacing your roof or are putting one on for the first time your contractor may ask you what type of shingles you would like to use.