I am building a shed next to my house (not attached). A 2 foot square section of the shed roof is underneath a stucco overhang of the house. I cannot get in there to nail the sheathing, tar paper or asphalt shingles down. I can fasten the sheathing down from below using fasteners. But for the tar paper and shingles? What type of glue, tar, etc. should be used to keep them in place?