Are H clips required for 3/4 roof sheathing?

Not Always Required But A Good Idea

Most builders install them, but they are not automatically required for all applications.

Are H-clips required for roof sheathing?

This means that 1/2” and 5/8” thick roofing panels that are supported by roof framing (rafters or trusses) spaced at the typical 16” or 24” o.c. do not require edge support (H-clips). It should be noted that the use of edge support (H-clips, blocking, tongue-and-groove edges, etc.)

How many roof sheathing clips do I need?

pair of trusses, rafters, or joists. However, two (2) equally spaced H-clips are required between supports when spaced 48 inches on center. misfit of abutting sheets may be tolerated if gaps do not exceed maximum opening of 1/4 inch (6 mm).

Do you need H-clips on OSB?

H-clips are an architects or engineer's call, not a code requirement. 7/16" OSB very commonly spans rafters 24" on center without clips. Not required by most residential codes unless your area has special requirements.

What are plywood sheathing clips used for?

Plywood clips, also referred to as H-clips or panel edge clips, are small metal brackets placed between the unsupported edges of plywood sheathing to effectively reduce the support spacing and stiffen the plywood.

Roof decking H clip what is an H clip and why they are so important! + Time laps and drone montage

What is the main purpose of installing H-clips when sheathing a roof?

H-clips, also called panel-edge clips, are small steel devices that fit snugly between wood panels in order to provide them with edge support. They are often used with roof sheathing to keep it from feeling spongy or soft at its edges.

Are H-clips required for roof sheathing in Ontario?

For the most common roof sheathing in our area, which is 1/2” nominal (7/16” actual) sheathing over trusses or rafters at 24” on center, there is no requirement for H-clips. The APA table has a span rating for the sheathing installed with, or without, H-clips, and the span rating is the same both ways.

Does roof sheathing need to be spaced?

Fasten panels with a minimum of 8d Common (0.131-inch by 2-1/2-inch) nails spaced a maximum of 6 inches on center at supported panel ends and edges. At intermediate supports, fasten panels 12 inches on center. In high-wind areas, more fasteners may be required.

What should I use for roof sheathing?

Oriented Strand Board (OSB) or plywood can be used, although plywood will provide higher nail head pull-through resistance. Use panels rated as “Exposure 1” or better. Install sheathing panels according to the recommendations of the Engineered Wood Association (APA). Use panels no smaller than 4 feet long.

What thickness of plywood is used for roof sheathing?

What is this? Standard roof sheathing thickness is ½” to ⅝” thick. If you are using OSB for your roof deck, then ⅝” is the recommended thickness. For plywood, which is slightly stronger than strand board, ½” thick is appropriate.

Can you use 7/16 ZIP sheathing on a roof?

Finished roof should be installed per the manufacturer's installation instructions. Huber Engineered Woods requires panel edge support for 7/16" ZIP System® sheathing installed on roof supports spaced more than 16" on center. Panel Edge support might be blocking, tongue-and-groove edges or panel edge clips (H-clips).

What is the nailing schedule for roof sheathing?

As such, the nailing schedule is typically the familiar 6 inches on center at supported panel edges, including gable-end walls and 12 inches on center over intermediate panel sup- ports. Note, however, that minimum 8d nails (0.131 x 2-1/2 inches) are recom- mended for all panels 5/8 inch thick or less.

Can you roof 3/4 plywood?

Since the most common rafter spacing is 24 inches, the standard plywood recommended for most roofing situations is 5/8-inches since it supports roof loads for most situations. However, a 3/4-inch thickness can be used for roofs with heavy loads.

Is it better to nail or screw roof sheathing?

Nails are often preferred for structural joining, including framing walls, because they are more flexible under pressure, whereas screws can snap. Nails are also called upon when securing plywood sheathing for exterior walls, installing hardwood floors, and attaching siding and roofing.

How Far Can 3/4 OSB span?

Span is permitted to be 24 inches on center where ³/₄-inch wood strip flooring is installed at right angles to joist. Span is permitted to be 24 inches on center for floors where 1¹/₂ inches of cellular or lightweight concrete is applied over the panels.

How far should roof sheathing overhang rafter tails?

It is at 45-3/4 in. Measure up the rafter 45-3/4 inch from the cut end of the truss tail and snap a line along the trusses. This indicates the upper edge of the first row of roof sheathing—leaving enough overhang that the subfascia and fascia will tuck neatly underneath when the time comes.

Does OSB need expansion joints?

Yes, in order to avoid dilation stress on the board edges. Expansion gaps are narrow distances that must be provided at the panel joints when fixing the straight-edge OSB boards on supports.

Can I use 3/8 plywood for a roof?

Minimum Thickness

Most roofs will be sheathed in plywood at least 3/8 inch thick. That will suffice on a roof with rafters set 16 inches apart with minimal roof loads. Loads will vary with the pitch of the roof; the flatter the roof, the greater the load on any one section.

Can you use OSB on a roof Ontario?

(1) Except as permitted in Sentence (2), built-up roofing applied over wood, plywood, OSB or waferboard roof sheathing shall be laid over an additional base layer of felt laid dry over the entire roof deck with at least a 50 mm headlap and a 50 mm sidelap between each sheet.

Is OSB board good for roofing?

OSB is now the most-used sheathing and subflooring material for new roofs and roof replacements. OSB is currently selling for less than plywood by approximately $3 per sheet, meaning a savings of several hundred dollars per conventional home.