How To Nail Dimensional Shingles
Bitumen roof shingles may exist i of the simplest roofing materials to install, just still they besides require specialized and exact rules on how to exist fastened. It is important to apply roofing nails in the correct quantity and location to securely lock a shingle into its identify. Accurate nailing affects the performance of roofing shingles and it is as well required by the International Building Code.
Roofing nails are used in roof installations to spike shingles, to install the roofing underlayment for waterproofing and to attach roof tiles and canvas metal. There are different kinds of roofing nails, made of different materials and in various sizes.
A roofing nail should have a minimum nominal shank diameter of 12 gauge, 2,67 mm, and a minimum caput diameter of nine,5 mm. Covering nail should have a barbed shank until the caput which eliminates nail pops, blow offs and roof leaks. A large boom head and heavier shank gauge provide greater belongings ability. All nails must be corrosion resistant; for example galvanized by diverse processes, aluminium, copper or stainless steel.
Roofing nails should be long enough to penetrate the roofing textile and go xix mm into OSB, solid wood, plywood or non-veneer wood decking, or through thickness of decking, whichever is less. To determine the blast length, yous should consider the number of layers of shingles, shingle thicknesses, underlayment and flashings (installed on eaves, sidewalls and valleys, etc.).
Some situations allow nails with less penetration above exposed soffits if actress nails are used. It is typical for garden houses, sheds or exposed soffits where the thickness of sheathing boards is xviii-20mm. Check the local building codes and regulations.
These ii pictures show inadequate penetration of the wooden deck.
The correct penetration of the wooden roof deck looks like this.
The correct penetration of the wooden roof deck looks like this.
The correct penetration of the wooden roof deck looks like this.
We have to utilize 30 mm long nails if we are installing thicker shingles similar the laminated shingles Cambridge Xpress or Cambridge Xtreme 9,v°. For reroofing (shingle over shingle) or hip and ridge application it is necessary to utilize minimum 35 mm long roofing nails.
Proper fastening is essential to a good roof functioning. To ensure proper nailing during the shingle application:
- Use the right type, size and grade of smash as is specified in the awarding pedagogy.
- Use corrosion resistant nails.
- Use the recommended number of nails per shingle.
- Position the nails according to the shingle specifications.
- Align the shingles properly earlier nailing to avoid exposing nails in the form below
- Bulldoze the nails directly and flat with the shingle surface.
- Do not break the shingle surface with the nail head.
- Do not drive nails into knotholes or cracks in the roof deck.
- Repair wrong nailing immediately.
- E'er nail the shingle from one side to the other, so the shingle stays flat on the roof.
- Follow the application instructions concerning special nailing procedures for steep slopes, high wind areas, and any special requirements.
- Comply with local building codes.
If a nail does not penetrate the deck properly and cannot be tapped downward to exist properly driven, remove the boom, repair the hole in the shingle with bituminous mastic and identify some other nail nearby. If necessary, supercede the unabridged shingle.
Take a look at the different nailing locations on the different types of shingles.
One of the nearly common defects with asphalt shingles is improper nailing. IKO and other manufacturers of asphalt shingles give specific instructions on how to fasten shingles, and they're all pretty much the aforementioned. Unfortunately, some roofers don't seem to pay a lot of attention to these instructions. That is why we want to highlight the two nearly mutual nailing defects with shingles: overdriven nails and improperly located nails.
Many roofers use pneumatic boom guns to boom down the shingles. When the pressure is set too high, the nails simply go driven into the shingles likewise far. When the nails are overdriven, the heads of the nails punch correct through the mat of the shingle. This voids the shingle manufacturer's warranty and profoundly increases the potential for shingles to come loose and exist diddled off, possibly in total shingle sheets.
The other common nailing defect is improperly located nails. It is very problematic to take nails located too high on the shingle. The correct nail must be applied 2,5 cm in a higher place the cut-out and 2,5 cm from each edge. For the Cambridge shingle nails must be applied into the nailing zone. When properly placed, the nail volition actually catch the top edge of the shingle beneath it. When the nails are located too high on the shingle, they never grab the shingle below. With this awarding mistake shingles are less current of air resistant and easily can accident off from the roof.
Accept a look at the examples of improperly located nails in this gallery.
Remember: Only properly driven and practical roofing nails are utilized as a preferred fixing system for asphalt roof shingles!
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Source: https://www.iko.be/en/blog/proper-nailing-essential-performance-roof-shingles
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