BEFORE YOU START

CHECK TO SEE IF STEP FLASHING WILL BE TALL ENOUGH TO REACH THE TOP EDGE OF THE CURB. EITHER THE 4" OR 6" LEG OF THE STEP FLASHING MAY BE TURNED UP. IF THE STEP FLASHINGS ARE TOO SHORT, YOU MUST SUPPLY AN "L" SHAPED COUNTER FLASH FROM THE TOP OF THE CURB DOWN OVER THE STEPS AFTER YOU HAVE COMPLETED THE FLASHING PROCESS.

STEP 1 Always work from bottom to top. Cut base flashing from 8" material, leaving 4" extra on each end. Flashing should be flush with top of curb (fig. 2). Do not install yet. It may be necessary to trim the base plate of the flash guard corners so that they do not extend beyond the base flashing when installed. To trim, cut with a saw or score with a utility knife and break off pieces. STEP 2 Replace course of roofing up to bottom of curb. Fasten "flash guard" bases to lower curb with one nail (fig. 1). Install base flashing as in fig. 2 but do not nail through flash guard base. Slip upper section of flash guard between base flashing and flash guard base (fig. 2). Base flashing will hold it in place. STEP 3 Using template, cut pattern for both bottom step flashings. Be sure to make a right and a left. Install directly on top of base flashing tabs. Fold flaps over toward each other (fig. 3). Do not nail through Flash Guard corners. replace shingle over bottom step leaving 3/4" to 1" of space from edges of shingles to side of curb. STEP 4 Trim side flashings to mount flush with top of curb. Install each flashing step over previous course of roofing and position so it overlaps the previous flash step by at least 2". The next roofing course will cover the flash step. Remember to leave 3/4" to 1" of spacing from roofing to curb. Repeat the process up each side of the curb. Do not install top step flashing yet.
STEP 5 Top Flash Guard corners do not need to be trimmed but may need height adjustment. install base of Flash Guard with one nail as in fig. 5. STEP 6 Fabricate top step (fig. 6). HINT: When making the cut for the top fold, cut downward toward curb corner above the crease in the step a distance equal to the thickness of the roofing material (i.e. composition 1/8" or shake 1/2" to 3/4"). This offers greater leak protection at corners. Slip top section of Flash Guard between step flash and Flash Guard base. STEP 7 Cut head flashing from 14" material, leaving 4" extra on each end. Using template, cut pattern at both ends and bend head flashing to come flush with top of curb. Slip under upper course of roofing and all along top of curb. Do not nail through Flash Guard. Fold tabs downward (fig. 7). NOTE: If head flashing fails to reach past upper felt on shake roofing or past splits in composition roofing, add an additional strip of felt or metal under existing felt of shingle splits wide enough to lap on top of head flashing base. Leave 1" - 2" clearance from lower edge of roofing course to curb along head flashing to eliminate debris accumulation. STEP 8 Install skylight using foam tape as a seal between skylight and curb. Do not use adhesive caulking that will adhere skylight to curb causing damage if it is necessary to remove skylight.