When expansion occurs, the boards have no place to go- and they buckle and/or cup. (But remember, it was easy to install and cheaper?!
After the boards buckle and cup, the boards are worthless. Repairing one of these decks is not economical. Deckmaster Premium (there is a reason for that word) Hidden Deck Fastening System allows for the expansion and contraction of softwood, hardwood and composite wood decking by its simple design. 6.) Finally, an independent firm, Testing Engineers, Inc., evaluated our system’s holding power with a standardized test (Tinius Olsen universal testing machine) resulting in Uniform Uplift Values. It demonstrates the strength of Deckmaster brackets and Grabber Deckmaster screws’ holding power to values of 800 to over 1,000 lbs/ft ². We have those tests available online at http://www.deckmaster.com/warranty.html Click on: Deckmaster Uplift Values. To our knowledge, no other hidden fastener system has ever published or even done the tests.
