1. For best results EpiStik™ SA-250 should be installed on a dry deck. Apply EpiStik™ SA-250 underlayment in fair weather when the air, roof deck and membrane are at temperatures of 40°F or higher.  Apply roof covering material at  temperatures of 40°F or higher.

2. For cold weather application below 40°F a primer should be used and the laps blind nailed. Blind nail with 3/8’’ head roofing nails of 1” or longer in the 3” overlap area marked with a “+” symbol.
3. For steep slope applications (6:12 or greater) or when installing at temperatures greater than 100°F it is recommended to blind nail the overlap area as instructed above for cold weather applications.
4. EpiStik™ SA-250 is to be laid out horizontally (parallel) to the eave with the printed side up, using 3” horizontal laps and 6” vertical laps. Vertical installation is possible but not recommended. Seek additional guidance should vertical installation be required.
5. Always work from the low point to the high point of the roof. Apply the membrane in valleys before the membrane is applied to the eaves.
6. Cut the membrane into 10–15 ft lengths and reroll loosely. Peel back 1–2 ft of release liner, align the membrane, and continue to peel the release liner from the membrane. Press the membrane in place with heavy hand pressure or a 2” hand held steel roller or walk on all laps or field are as possible to push the adhesive on to the roof deck and overlap. Side laps must be a minimum of 3” and end laps a minimum of 6”.
7. For valley and ridge application, peel the release liner, center the sheet over the valley or ridge, drape, and press it in place. Work from the center of the valley or ridge outward in each direction and start at the low point and work up the roof. Weaving a valley is not recommended.
8. For eave application EpiStik™ SA-250 should be applied over the metal drip edge at the eave. Do not fold EpiStik™ SA-250 over the roof edge unless the edge is subsequently covered over by a drop edge or other appropriate flashing material. It is recommended that the EpiStik™ SA-250 extend from the eave up the roof to a point 24” inside the exterior wall. This should be above the maximum ice-dam buildup line in most areas. Consult your local building code for specific requirements.
9. Repair holes, fish mouths, tears, and any other penetration damage to the membrane with a patch of membrane extending passed the damaged area by 6” in all directions. If fasteners are removed leaving holes in the membrane or other penetrations are accidentally produced, they must also be patched.
10. Do not install fasteners through membrane over any unsupported areas of the structural deck, such as over joints between adjacent structural panels.
11. For high elevation, high wind or wind driven rain potential we recommended that you cover the entire roof deck with EpiStik™ SA-250.
12. EpiStik™ SA-250 must be installed in accordance with the provisions of sections 1507 and 1518 of the FBC.
References:
a. Roofng practices per OSHA 29CFR
b. Fall Protection per OSHA 1926.502
c. Applicable State & Local building codes