I'm preparing our exterior wall for repainting. Old paint is multiple layers of elastomeric paint from years of coating and recoating.
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calculate how many hollow blocks I need
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How to properly refinish elastomeric paint?
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DryWall / cement board For Exterior Use (sample pics inside)
I was wondering what kind of exterior drywall or cement board like the one used in this photo. (this one is taken from Pedro Calungsod Chapel in Cebu)...
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mig21 started a topic Power Tool to replace manual sanding of Concrete Wall Surface preparation/plastering?in ToolsPower Tool to replace manual sanding of Concrete Wall Surface preparation/plastering?
Good Day PHM! Preparing CHB Wall for plastering seems very frustrating. Lots of man hours just to smoothen the surface area by area, and its very tedious,...
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Re: calculate how many hollow blocks I need
The critical dimension to know is the length and width of the lot, to determine the perimeter. If squarish, each side of the lot will be approximately 16 meters.
Perimeter times height equals the number of square meters of wall. So 16 meter length of each side times 4 sides times 3 meter height equals 192 square meters.
Each square meter of hollow block wall needs 12.5 pieces of hollow blocks or you need 2,400 pieces.
But you need to remove the area of the posts required for the wall from the computation.
To compute for the amount of cement and sand to fill and set the blocks, multiply the number of square meters of wall by .525 bags of cement and .0437 cubic meters of sand. This is for 6" CHB.
So your wall will require approximately 101 bags of cement and 8.5 cubic meters of sand.

Re: calculate how many hollow blocks I need
Ask ko na rin po, what if 4" CHB? How many bags per sq.m will be used?
Yun po bang 0.525 bag per sq.m na 6" kasama na palitada nun or pang fill lang yun?
How about sa floor? What is the standard thickness and papano yung mixing (sand/cement) or yung consumption niya?
Many thanks
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