Oral cancer can develop in the lips, gums, and tongue, as well as the lining of the cheeks and the floor and roof of the mouth. White, red, or mixed red and white spots (or patches) on your tongue, gums, or any other tissues in your mouth. A sore or irritation in the mouth that bleeds easily and doesn't heal.
Normally shingles are grouped horizontally in groups of three or four. Either glue or small tacks holds together the pre-grouped shingles.  â¦    also, 3 bundles of 30 year shingles = one square=100 sq ft coverage.------------------------------------ A standard 3-tab shingle contains 1/3 of a square.... that is, it takes three bundles of shingles to cover 100 square feet.
Tip 1 â Determining your Shingle Requirements. In estimating how many shingles you'll need, do not make the mistake of trying to estimate the number of shingles until you have figured the square footage area of your roof. Then, use that figure to estimate the number of shingle squares you'll need.