Page 666 - 2018 National Home Improvement

2018 National Home Improvement Estimator, All Rights Reserved Page 537

Remove mold by abrading. Manually remove mold spores from semi-porous surfaces by sanding,
brushing or scraping. Includes removal of abraded residue with a HEPA filter vacuum but not the cost of
a HEPA vacuum. Work done in containment and personal protective equipment (PPE) will take about 50
percent longer.
Light contamination (33 SF per manhour) BL@.030 SF -- 0.98 0.98
Medium contamination (29 SF per manhour) BL@.035 SF -- 1.14 1.14
Heavy contamination (25 SF per manhour) BL@.040 SF -- 1.31 1.31
Add for work done in containment and PPE -- % -- 50.0 --

Dry ice blasting. Per square foot of surface blasted. Assumes work is done on framing materials in a
confined area (attic or crawl space). Add the cost of a dry ice blaster and dry ice. Includes removal of
the blasted residue with a HEPA filter vacuum but not the cost of the vacuum.
Smooth face (50 SF per manhour) B8@.020 SF -- 0.79 0.79
Rough face (40 SF per manhour) B8@.025 SF -- 0.98 0.98
Deduct for work done in open areas -- % -- 50.0 --

Dry ice blaster rental. Blaster with a 40 lb. hopper, hoses and nozzle. Feed rate in pounds per minute
(ppm) of dry ice.
Aero 40, 20 to 140 psi, 0 to 4 ppm 455.00 1,140.00 3,060.00
Aero 40, 20 to 250 psi, 0-4 ppm 493.00 1,240.00 3,720.00
Aero 80, 30 to 140 psi, 0-7 ppm 714.00 1,810.00 5,410.00
Aero 100, 20 to 140 psi, 1-7 ppm 536.00 1,350.00 4,050.00

Dry ice pellets. 1/8" (2.9mm) high density dry ice pellets. Usage can vary from 1 pound per minute to 7
pounds per minute. Estimate 3 pounds per minute on most jobs. As a rule of thumb, allow 1,000
pounds of blasting ice per 8 hour shift. At 3 pounds per minute, 1,000 pounds of blasting ice will provide
5-1/2 hours of uninterrupted blasting.
1/8" (2.9 mm) high density dry ice pellets --@.000 Lb 1.11 -- 1.11

Encapsulation. Encapsulation of pre-cleaned surfaces to seal mold residue and inhibit future growth.
Fungicide, Foster Full Defense 40-25, per 100 square feet coated (CSF).
Purchase, per gallon --@.000Gallon 57.47 -- 57.47
Semi-porous surface, 200 SF per gallon --@.000 CSF 28.79 -- 28.79
Non-porous or surface, 250 SF per gallon --@.000 CSF 23.03 -- 23.03
Anti-microbial, Caliwel™ with BNA, per 100 square feet coated (CSF).
Purchase, per gallon --@.000 Ea 79.59 -- 79.59
Semi-porous surface, 200 SF per gallon --@.000 CSF 36.56 -- 36.56
Non-porous surface, 250 SF per gallon --@.000 CSF 30.10 -- 30.10
Apply mold sealer on semi-porous (unprimed) surfaces.
Brush, 140 SF per hour B8@.717 CSF -- 28.16 28.16
Roller, 220 SF per hour B8@.450 CSF -- 17.67 17.67
Spray, 575 SF per hour B8@.173 CSF -- 6.79 6.79
Apply mold sealer on non-porous (or primed) surfaces.
Brush, 175 SF per hour B8@.567 CSF -- 22.27 22.27
Roller, 275 SF per hour B8@.363 CSF -- 14.26 14.26
Spray, 700 SF per hour B8@.143 CSF -- 5.62 5.62