Bit of advice please. How many 1800 x 900 12.5 boards would I be able to dot and dab with one 25kg bag of adhiesive. I will be boarding on block walls if that makes any difference? Thanks.
Usually I can dot and dab aprox two 1200x2400 12.5 SE with a bag of Dry wall adhesive ssssooo.. I reckon I could do almost three 1800x900 12.5 SE. Easy solution is just to get more than you "think" you need..... Pete M
if the wall is very flat you may get 2 boards done with 1 bag,if you put very thin dabs on you risk it coming off,make sure you put plenty all around the edges and around outlets
tip if you cut waste p/board into 6" SQUARES AND STICK THESE TO THE WALL THEN dot and dab onto these you use next to nothing and can stick loads with one bag
if done properly you should get no more than 3. continuous adhesive cross top and bottom and around any outlets. Why are you using 6x3s?.