Roof Rafter Jacks

For any questions see the directions at the bottom.

Roof rafter jacks.

Collar tie and beam a collar tie or beam figure 7 7 is a piece of stock usually 1 x 4 1 x 6 l x 8 or 2 x 4 fastened in a horizontal position to a pair of rafters between the plate and the ridge of the roof. Roofing jacks provide safe platforms on slopes. Jack rafters are sloping beams that are progressively shorter in length and support the weight of a roof. It has a compression load range of 18 000 lbs.

A hip rafter is called for only when framing a hip roof but a valley rafter is needed on both hip and gable roofs whenever roof planes intersect. To attach the jacks level the pair by aligning the jacks to horizontal chalklines and drive two 10d galvanized common nails through each jack into rafters. Roof framing involves a lexicon all its own. A jack rafteris a shortened com mon rafter that may be framed to a hip rafter a valley rafter or both.

The easiest way to straighten rafters is to jack them into position. Ideally locate a rafter below the sheathing. For pricing and availability. When repairing or replacing a roof it pays to be familiar with these terms.

Move the jack in increments of one inch to allow for the roof to be able to move with it without cracking. It is ideal for correcting sagging floors and basement beams and providing secondary support for. Includes illustrations that show roofs have hip rafters ridge boards jack rafters and more. Here is a closer look at common roofing terms.

The cripple jack rafter is also part of a common rafter but it touches neither the ridge of the roof nor the rafter plate. Jacks nailed only to. Draw a diagonal line between 9 feet the run of the main roof on the tongue of the square and 7 feet 6 inches the secondary roof run on the blade. What are jack rafters.

Simply use the drop down to enter the pitch of the main roof the pitch of the complimentary roof and the length of the long rafter to get reliable results. Find my store. Typically install a pair of jacks for every six to eight courses. Akron big moe 56 in adjustable jack post.

Model j big moe. For pricing and availability. The tiger brand jack post super s 4 the tiger brand jack post super s 4 ft. At its highest setting.

Akron 19 in adjustable jack post. Jack post can adjust from 2 ft. At its lowest setting and 14 000 lbs. This gives the angle of the hip rafter.

Roof jacks provide a stable surface to work increasing safety and making it easier to apply roofing. However the trick to this process is to do it very slowly so it may take a few weeks before you get the rafter into a position where it is straight again. Thus there arehip jack raftersand valley jack rafters.