Building Wood Fence Gates That Wont Sag

 Building Wood Fence Gates That Wont Sag

There are three criteria that should usually be met when building wood fence gates that wont sag.  If you can successfully meet these requirements the gate can quite large and still not sag.

The first criteria is a solid mounting surface.  If the gate is mounted to a structure it must be secured well enough that the hinges don’t pull away from the gate or structure. The use of lag bolts or thru-bolts with nuts and washers is often required to support the weight of larger gates.   If the gate is mounted to a post, it must be mounted securely as previously stated. Additionally the post must be rigid enough not to bend or bow under the weight of the gate and set solidly enough into the ground to not rack because of that same weight.

Another important principle in building wood fence gates that wont sag is securely fastening the corners of the gate.  On larger  gates, it may be necessary to use metal brackets or plates secured with screws to reinforce the corner joints.  If the corners are not fastened securely the bracing which is the next requirement will not function properly.

The last criteria for building wood fence gates that wont sag is diagonal bracing.  Often “X” bracing is used in a gate because the symmetry is aesthetically pleasing to the eye. What is critical however is just one diagonal brace properly placed and secured. This brace can be secured near either the top or bottom of the hinge side and extend to near the opposite corner on the latch side of the gate.

 Building Wood Fence Gates That Wont Sag

Diagram for Building Wood Fence Gates That Wont Sag

If it is attached at the bottom hinge side it must be made of a rigid material that can withstand compression forces as the weight of the gate presses down on, and is supported by the brace.  Compression bracing can be achieved with rigid material such as wood, steel or aluminum.

If it is attached at the top hinge side it must have enough tensile strength to support the weight of the gate as it pulls down on and is supported by the brace. Tensile bracing can be achieved with rigid material such as wood, steel or aluminum but can also be achieved with non rigid components such as cables, wires or rods. A common form of tension bracing utilizes a cable or rod in conjunction with a turnbuckle which allows for some up or down adjustability of the gate .


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About Tony Wood

Tony is a life time resident of North Carolina with over 30 years experience in multiple facets of the industrial, commercial and residential construction industry. For the past 23 years he has owned and operated Wood's Home Maintenance Service, providing services primarily in Johnston, Wake and Sampson Counties of North Carolina. ______________ ______________________________________________________ The information contained in this Blog is opinion derived, from hands on experience of over 30 years in the construction industry and by extensive research by the author. All postulations are referenced to the geographic location in which this experience was gained.
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