These are the stainless steel ones and they’re powder coated to match the roof. It’s got two holes for fastening and we recommend you center that up on the 2 x 4. The color ones are individually wrapped with plastic to keep
them from scuffing/chaffing as they’re in shipment and so on. The gasket on the bottom,
the black rubber gasket is glued on. You’ll have no problem with that falling off as you
install. And that is designed to seal up against the roofing to keep the water from
reaching the shank of the screw. If water can get down through and reach the shank of
the screw, it will follow the screw down through the roof. You want the screw length at least
the depth of the wood that you have there. In this case I’m using 1-1/2″ screws. There’s
no point in going through the wood, but you want to get all the grab you can so the weight
of the snow doesn’t strip them out. We recommend not to use the cordless impact drivers. I’m
using a cordless, but it is just a drill. This has a ratchet on the front so I can set
the torque. What I don’t want to do is over-drive the screw and flatten the washer. If you over-drive
that screw and flatten the washer too hard, it just exposes more of it to sunlight. The
sunlight will break down the washer eventually. [Snow Guard Pattern] Each roof is different.
It’s going to depend on the length of your roof, how much snow you’re trying to hold.
And of course the pitch of your roof; determine how quick it’s going to slide, also. The Snow
Defender website has the option to put your roofing length and width and it will calculate
and give you a layout of what you should be using. A lot of people will think they can
just put two rows at the bottom and that does the job, but if you get a long roof, you’re
snow weight above is going to start moving. And sometimes I’ve seen it strip the two rows
off the bottom. So there is a trick to getting the proper amounts on the roof to hold the
snow load that you’re dealing with. So you got your screw row on the roofing already,
so that gives you an indication of where the 2 x 4 is. So we’ll just lay this down and
center it up, and should be good to go.