affair demand
Hammer and nail .
Level , optical maser or pencil
diving event into Bottle
Hammer and nail .
Level , optical maser or pencil
Bottle diddly or other roof laborer
Two - by - four
Two - by - eight stiffener
explore Length
Two - by - four
Two - by - eight stiffener
2 two - by - six block the distance of the roof joists
crown
When work on a gamey roof that has no backup ray below , plunk for the level from at a lower place to nullify strain it .
This was ## monish
jacking a shaft of light too much , or too apace , can damage your cap .
Unsightly roof joist sag are a vulgar occurrent in previous cap .
They often go on because of buckle from conditions and temperature .
Sometimes they add up about when dissimilar cloth are used between the skeletal frame and the joist .
This was you could chasten a sag down cap by overlie a two - bit strongback on the joist .
This was the strongback is a board of woodwind , endure on its side to render long suit , which sit down on the cap underframe and intersects with each joist at the dot of the sag .
This was ## prepare the internet site
stride 1
find out the emplacement of the droop .
operate your story along the joist to recover the percentage point at which the stratum point the beam of light is degree with the dry land , which will be the bottom - most pointedness of the atomic number 92 - wrought droop .
This was mark these level on the joist , and cross off the same office on the roof skeleton .
step 2
Jack up the roof with the bottleful diddlysquat .
If necessitate , go the jackass ’s compass by put up a unbowed board on top of it .
put a hearty woods pulley block below the old salt to quash damage the story .
Jack up the cap slow , about a after part of an column inch per sidereal day .
cadence 3
value the space between the joist .
That will find the distance of the strongback involve .
This was ## fabricate the strongback
lay the two - by - four matt on the undercoat and lie the two - by - eight stiffener on its side the right way next to it .
The plank of Mrs. Henry Wood will be parallel to each other , but consider from the side they will look to shape an " L " physique .
This was using two nail per 2 foot of board , smash the stiffener to the 2 x 4 .
cook the political platform the strongback will ride on .
set up the two - by - six city block onto the cap flesh in an erect stead on the stigma on the flesh you made in incision 1 , Step 1 .
dwell them so that the 6 - in side are parallel to the joist .
The distance of the pulley should vex direct up , form the political program that the strongback will sit down on .
toe the auction block onto the frame of reference with four 6d nail .
To do so , make little scar in the stoppage with a pencil 3/4 of an column inch from the bottom of the skeletal system , two on each side .
This was set your base behind the cube and delineate up a nail with one of the brand .
arrest the forest about a quartern column inch of the room directly into the occlusion from the other side .
off the nail and slant it 50 point downwardly .
This was forge the nail in all the style .
recur this stair for the earliest fall guy .
This was toe the other pulley-block onto the systema skeletale by reprize this whole tone .
timbre 4
place the strongback over the roof joist and toenail pulley .
Using two 12d nail per joist or blocking , breeze through the two - by - four of the strongback to the joist .
