This document is a deteailed overview of the processes for estimating roofing labor. The roofing labor will be completed using the National Construction Estimator. The roofing costs will be taken from two areas of the estimator: the roofing subsection and the flashing subsection.

Table of Contents

• Roofing Labor

Roofing Labor

Roofing Felt

The labor cost from the Roofing Materials subsection in the Residential section of the NCE will be used to estimate the cost of roofing felt. Careful reading of the header section reveals that the cost in this section is for roofing felt that is nailed down. The NCE also provides the cost for roofing felt a few pages later, however, careful reading of the header section reveals that this cost is for attaching the felt using the hop mopped process. NCE Figure 10-1 shows a screenshot of the NCE with the roof felt cost highlighted.

NCE Figure 10-1: Roofing felt installation cost.

2018 National Construction Estimator, Richard Pray, Craftsman Book Company, 2018, 66th Ed. P.257.

The quantity of roofing felt needed can be taken from the SF Sloped Roof Area. The quantity will be divided by 100 to convert the square foot area to a square, which is the unit of labor for roofing felt in the NCE. The calculation to convert the square footage to squares would be

The calculation would be as follows:

The Composition Roofing Shingles subsection of the NCE will be used to calculate the labor cost for installing the roof shingles. Several different classifications and qualities of shingles are listed in this section, and it can be a little confusing trying to determine the correct type; however, each of the types has the same installation cost per square. The architectural grade laminated shingles will be used. The SF sloped roof area in the header section can be used for determining the quantity of roof shingles. Again, the quantity will need to be converted from square feet to squares (NCE Figure 10-2).

Install Starter Strip

The Composition Roofing Shingles subsection of the NCE will be used to calculate the labor cost for installing the shingle starter strip. The cost is priced per lineal foot of starter strip. The calculation would be

Install Hip or Ridge Shingles

The Composition Roofing Shingles subsection of the NCE will be used to calculate the labor cost for installing the hip or ridge shingles. The cost is priced per lineal foot of hip or ridge. The calculations would be

NCE Figure 10-2: NCE cost for installing roof shingles, starter strip, and hip and ridge.

2018 National Construction Estimator, Richard Pray, Craftsman Book Company, 2018, 66th Ed. P.258

Install Ice and Water Shield

The Building Paper subsection of the Residential section of the NCE will be used to calculate the labor cost for installing ice and water shield. The self-adhesive, typical option will be used and priced per square footage of ice and water shield (NCE Figure 10-3).

NCE Figure 10-3: NCE price for installing ice and water shield.

2018 National Construction Estimator, Richard Pray, Craftsman Book Company, 2018, 66th Ed. P.258

The LF Ice and Water Shield will be multiplied by the three-foot width of the ice and water shield material. The calculation to determine the quantity would be

The calculation to determine the labor cost would be

= $93.06

Install Drip Edge

The Galvanized Steel Flashing subsection of the Residential section of the NCE will be used to determine the labor cost for installing the drip edge. The drip edge 2 ½″ x 1″ x 10′ option will be used. The labor is estimated based upon 10-foot lengths of drip edge (NCE Figure 10-4). The calculation for determining the quantity is

The calculation to determine the labor cost for the drip edge is

Install Valley Flashing

In this instance, the ice and water shield will be used as the valley flashing. This was previously calculated with the ice and water shield, and no additional cost will be needed.

Install Step Flashing

The Galvanized Steel Flashing subsection of the Residential section of the NCE will be used to determine the labor cost for installing the step flashing. The step flashing bent 8″ x 8″ brown will be used as it most closely resembles the flashing used (NCE Figure 10-4). The installation is priced per each with the quantity taken from the materials you determined.

Install Plumbing Vent Flashing

The Galvanized Steel Flashing subsection of the Residential section of the NCE will be used to determine the labor cost for installing the plumbing vent flashing. The vent pipe flash cone 3″ pipe will be used. Even though there are several sizes of plumbing flashing used, the installation price is the same for each, so the quantity will be combined in a single estimate line (NCE Figure 10-4).

NCE Figure 10-4: NCE costs for installing flashings.

2018 National Construction Estimator, Richard Pray, Craftsman Book Company, 2018, 66th Ed. P.268-69

Install Roof Vents

The ridge ventilators option in the Vents and Louvers subsection of the Residential section of the NCE will be used to price the installation of the ridge vents (NCE Figure 10-5). The price is based per 10-foot length. The quantity will need to be divided 10 ten to account for the 10-foot length estimated in the NCE.

NCE Figure 10-5: NCE cost for ridge vents.

2018 National Construction Estimator, Richard Pray, Craftsman Book Company, 2018, 66th Ed. P.292

Window Labor Estimating (Detailed

This document provides a detailed overview of how to estimate labor for window installation.

Window Labor

NCE Figure 10-6 shows the vinyl sliding window section of the Residential section of the NCE. The window section of the NCE is multiple pages long detailing the material and labor cost for many different window types and construction. A careful review of the labor cost will reveal that there are only three installation costs: a low cost, a medium cost, and a high cost. Each level of cost is color coded to match the color code of the window schedule.

NCE Figure 10-6 Horizontal sliding section of the NCE.

Vinyl Siding Labor Estimating (Detailed)

This document contains a detailed overview of the process for estimating vinyl siding labor.

Table of Contents

• Install House Wrap
• Install Siding and Siding Trim

Install House Wrap

The house wrap and window flashing paper labor cost is taken from the Building Paper subsection of the Residential subsection of the National Construction Estimator. NCE Figure 10-9 shows the labor cost for installing building paper.

NCE Figure 10-9 Labor to install building papers subsection of the NCE.

The Tack stapled, typical option of felts, vapor barriers, infiltration barriers, building papers on walls subsection will be used for pricing the house wrap. The price is calculated per square foot.

Install Window Flashing

The flashing papers 6″ to 8″ wide subsection will be used to calculate the labor cost for installing the window flashing.

Install Siding and Siding Trim

NCE Figure 10-10 shows the Vinyl Siding subsection of the Residential section of the NCE that will be used to calculate the vinyl siding and vinyl siding trim accessories labor costs.

Install Siding

The NCE lists several different types of siding, however, the labor cost for each one is listed as $112.00 per square.

Install Starter Strip

The crew, craft hours, unit, and labor cost for installing starter strip are entered into the spreadsheet. The quantity of starter strip is automatically carried forward from the header section.

NCE Figure 10-10

Install J Channel

Labor cost for installing J channel will be taken from the NCE.

Install Outside and Inside Corners

Labor cost for installing outside and inside corners will be taken from the NCE.

Install Window Trim

The casing and trim, 12 feet, 6 inches long, taken from the NCE, is used to price the installation of the window trim.

Install Mounting Blocks

Two types of mounting blocks are listed in the NCE, and both sizes show the same price of $11.70 for each one.

Install Soffit and Fascia System

NCE Figure 10-11 shows the Soffit Systems subsection of the Residential section of the NCE. The soffit and fascia is priced as a complete system including six-inch-wide fascia, J channel, and soffit. The prices for 12-inch, 18-inch, and 24-inch-wide soffit are all priced at the same one-dollar-per-foot cost.

NCE Figure 10-11 Soffit and fascia system in the NCE.

Installing Gable End Vents

The vents and louvers subsection of the NCE will be used for pricing the labor costs for installing the gable end vents. Vents are priced per each based upon the size and shape of the vent.

NCE Figure 10-12