The stitch bolts are bolts used to keep splits from developing in the timber main members and are placed perpendicular to the connection bolts. Very little research exists pertaining to bolted timber connections reinforced with stitch bolts.
What is a stitch screw for?
A lap screw, also called a stitch screw, is a self-tapping screw used to “stitch” together metal panels where they overlap, as well as to flashing, gutters and trim.
Where do you use stitch screws?
Stitch screw fasteners are used on roof and wall panels. They attach panels to panels or flashings to panel. Four sealing point design ensures a perfect seal. Fasteners have self-tapping points so no pre-drilling is required.
Are stitch screws necessary?
The manufacturer’s installation guide for the Classic Rib panels says to install stitch screws every 12″ along the side laps, but the guides from a couple of major retailers of Classic Rib say stitch screws are optional with a 4:12 or greater pitch.
How do stitch screws work?
EASY. OK, what do stitch screws do? Simply, they are #12 diameter, ¾” to 1-1/4” in length with ¼” hex head painted screw (powder coated if they come from our Hansen Buildings kits) used to stitch “metal to metal”. This means corner and rake trims and the ridge cap where they overlap wall steel.
Can Tek screws be used in wood?
Tek screws, also called self-drilling screws, are self-tapping fasteners that have a drill bit end allowing them to be used for screwing materials such as wood and metal together without pre-drilling. Tek screws are best fitted with a high-speed impact drive.
What are metal sheet stitching screws?
TIMco Hex Stitching Screws are designed to stitch two pieces of thin sheet metal to each other. Ideally suited for working with roofing sheets and building cladding. Each screw has a tapered shank to pull the two pieces together, and an EPDM washer to prevent water ingress.
How often should metal roof screws be replaced?
Depending on what kind of paint is used on the steel or aluminum panels will determine what kind of warranty you get on a screw down metal roof system. Properly installed with no maintenance, you could get 20 years out of your screw down panel roof. With periodic maintenance, you could possibly stretch it to 30 years.
Where should you screw metal roofing?
And most U.S. metal roofing manufacturers say that you should put screws into the flat, because this location offers a solid wood surface just beneath the metal panel, resulting in a safer, tighter, more secure seal.