Purpose Of Roof Jacks

Roof jacks are used to receive and cover venting duct pipe from kitchen and bath fans and for attic ventilation.

Purpose of roof jacks.

Nail the new shingles down with roofing nails so the nails are covered by the shingle above. Slide the upper tab on the jack under the shingle so that nail hole in the jack is barely covered. Akron adjustable floor jack model c 4 akron jacks floor jacks telescoping jack for temporary support size range 1 1 3 2 pack 4 3 out of 5 stars 359. Use a hammer to bend the top edge of the soft lead roof jack down into the vent pipe.

Roof jacks provide a stable surface to work increasing safety and making it easier to apply roofing. Speedi products bv arj 07 7 inch galvanized 1 2 to 7 12 pitch adjustable b vent roof jack. The main purpose of roofing jacks is specifically for safety the shingles are actually laid starting at the very low edges up to the roof up to the scaffolding and the ladder. Roof jacks are nailed to the roof directly over rafters for strength.

Lift up the tab of a shingle where you wish to install the jack. Vent caps provide protection from rain snow and debris. Ideally locate a rafter below the sheathing. Cut roof shingles to fit around the roof jack and insert them under the existing shingles.

The jacks must be properly nailed or leaks in the roof could occur. 5 0 out of 5 stars 2. You can usually feel sheathing nails which are driven into rafters through the underlayment attach a jack by driving two 16d nails never roofing nails into a rafter.