Anyone used them, are they worth the extra cost over goldscrews? They are three times the price. I have a whole house to screw down the chipboard flooring. Do you need to bore the the chipboard or will they drive straight in & countersink themselves as claimed without snapping? What length would you recomend for 22mm flooring.
Never used them, But you need 2 1/2 the thickness you are fixing (hope that makes sense) 22 x 2.5 = 55mm
42 mil gyproc plaster board screws have always worked for me and saved time since they counter sink themselves. Obviously they wouldn't be recommended in building regs but they do the job so why not?