Roof Rafter Spread

This ties them together and prevents any outward movement.

Roof rafter spread.

2 with ceiling joists. Something else to look for in regards to roof spread is sag. Factors that cause the situation include bad construction improper materials and water and rot problems. This article describes a diy repair project using a site built spreader to straighten sagged roof rafters and decking.

Please follow and recommend our blog page. Roof spread can be dangerous for a house and very damaging for a roof. When considering what to do about sags in a roof start by noticing if the sag is in sheathing between rafters page top photo0 or sagging along the length of the rafters. Split ridge board causing rafter instability and subsequent applied horizontal thrust to the wall plates.

Roof spread affects a roof that begins to move after it is installed. It also leaves a void the loft which can be used for storage or the placing of water tanks etc. Roof spread occurs when the principal rafters of the roof are not adequately supported causing them to open in a scissor like pattern. Therefore the first signs of roof spread are often cracking bulging or leaning at the head of the masonry causing bowed walls.

N modern cut timber roofs pre 1970 constructed on site this force is normally resisted by joining the bottom of each pair of rafters see fig. So fixing the problem as soon as possible is vital. Roof rafter decking sagging. Roof spread occurs when there is a failure to adequately support the main rafters of the roof so as to prevent them spreading further open in a scissor type action.