Construction Estimator

You will always have cuts at the edges of the room that can't be reused. 10% is the industry standard buffer. For diagonal patterns, use 15-20%.

PEI rates ceramic tile hardness. Class 1 is for walls only, while Class 3-4 is good for residential floors. Class 5 is for heavy commercial use.

Yes, underlayment provides moisture protection, sound insulation, and a smooth surface. It is essential for laminate and floating floors to prevent clicking sounds.

Texture increases surface area. Reduce standard coverage (350-400 sq ft/gal) by 10-20% for textured walls like popcorn or knockdown.

Roofers measure in 'Squares'. One Square equals 100 square feet. A standard bundle of shingles typically covers 1/3 of a Square.

Yes, especially for new drywall or when painting over dark colors. Primer seals the surface, ensuring the topcoat adheres better and looks uniform.

The number represents the diameter in 1/8ths of an inch. #4 rebar is 4/8" (1/2 inch). #3 is 3/8".

Structural engineers calculate the tensile strength required for concrete based on the total weight of steel reinforcement. Rebar is priced and sold by weight.