Installing Ice And Water Barrier On Roof

Remember that in high.

Installing ice and water barrier on roof.

The eaves flashing shall be installed from the end of the deck to a minimum of 24 inches up the slope. The drip edge will be installed over the ice and water protector and other underlayments at roof rake edges you should install ice and water protector before other underlayments including roof felt. Then install regular roofing underlayment tar paper over the top of the drip edge and over the ice barrier and continuing all the way up the roof. This code implies that ice and water shield eaves flashing is required for installation on all heated steep slope structures exception is unheated structures in colder climates.

On most roofs this isn t far enough to comply with the international residential code. The problem turned out to be you ve likely guessed it the ice and water installed by his roof contractor. Cons of installing ice and water shield on your roof the only real negatives of covering your entire roof with ice water shield are 1 cost and 2 potential ventilation problems which are very rare. The contractor had used the was the regular kind and it was literally melting in some of the areas where it was touching the metal diamonds that were directly exposed to the sun for extended periods in the day.

Eaves flashing is required to prevent ice formation at the eaves and gutter to back up beneath the roof covering. Ice water shield acts as a vapor suppressor so it not only keeps the water out but also keeps the moisture in. Section r905 1 2 ice barriers in the 2018 irc says the ice barrier shall extend from the lowest edges of all roof surfaces to a point not less than 24 inches inside the exterior wall line of the building. One person can install long lengths of ice and water shield to the roof however it is easier for two people to install especially with some new installation tricks.