Roof Header Board

Fastening to masonry walls.

Roof header board.

Take off enough covering to expose. The header spans an opening for a window or door or it is a cut out in the roof or floor for a skylight chimney or staircase. For each application a pdf download is available. Anchor a ledger to a masonry wall with expanding anchor bolts begin by marking a line across the wall for the ledger s top edge.

Click on the appropriate beam this will take you to the calculation table for your project. Typically at least twice the size of surrounding framing members a header is often built up from two studs joists or rafters. Also see assumptions for table development. Gentite w59gt10125 10 ft.

The distance in this case is 12 ft 2 ft 14 ft. The exterior wall and the headers within will carry all loads from the mid point of the house between the supporting walls to the outside of the house including the roof overhang. Now the word header refers to a beam like support in wood frame construction. It resists tears and withstands light foot traffic.

Place the second board on the plywood so that the 2 header boards are flush all around. Be sure to nail through the plywood strips. Determine how high it must be to provide an adequate slope to. Using 16 nails nail the 2 header boards together from both sides in a grid pattern.

So each lineal foot of wall must carry the loads imposed by a 1 foot wide strip in that 14 ft region. Loading conditions are detailed below. Remove the shingles or siding in the area identified for the header board. How to attach a header board to a house for a porch roof step 1.

The column on the left of each chart labeled beam span represents the beam length with bearing required for your project. Determine the beam header span length and the span carried supported by the beam header. Board feet chart and calculator board feet volume measurement of lumber. The placement of the ledger header determines the level of the roof so be sure it is positioned at the correct height and is horizontal.

Drill holes for the expanding anchors every 16 inches or as specified by local codes insert the anchors hold the ledger in place and tap it with a hammer to indent the anchor locations on its back face. Black epdm rubber roofing is a weather resistant commercial grade roofing membrane. A ledger header board is the first step if you are attaching the patio roof to an existing structure. Locate a position for a header or ledger board.

Beams supported at both ends continuous and point loads support loads stress and deflections. Cantilever beams moments and deflections maximum.