The Cost Effectiveness of Alpha SPF Roofs: Casa View Elementary School Roofing Case Study

Kashiwagi, Dean; Zulanas, Charles; Gajjar, Dhaval

doi:10.37265/japiv.v8i2.63

Cited by 3 publications

(7 citation statements)

References 5 publications

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“…One of the reasons for utilizing the SPF roof system was savings of over $100,000 versus the removal of the existing system and installing the more traditional MB roof. The Alpha SPF roof may also extend the service life up to 45 years after two recoats of SPF, as was seen from the performance information on Alpha roofs installed at Casa View and Foster's Elementary school (Kashiwagi 2016a;Kashiwagi, 2016b).…”

Section: Case Study At William Lipscomb Elementarymentioning

confidence: 97%

“…Today, most SPF roofs at DISD are being replaced by costlier MB roofing systems even though the cost of the recoating and maintaining the Alpha SPF roof system is half of the MB system. (Casa View Roof and the Fosters Elementary Roof Hail Testing; Kashiwagi, et al, 2016a;Kashiwagi, et al, 2016b).…”

Section: Problemmentioning

confidence: 99%

“…DISD installed over 4 million square feet of the Alpha SPF and additional lower costing SPF roofing systems. When installed correctly, the Alpha SPF systems performed for 25 years, with a recoat capability to last another 15 to 20 years, as documented by the Casa View Roof and the Fosters Elementary Roof Hail Testing (Kashiwagi, et al, 2016a;Kashiwagi, et al, 2016b). However, when DISD adjusted the requirements and allowed the general contractors to hire the lowest costing roofing contractors they received roofs that were installed incorrectly and the roofs did not perform as expected.…”

Section: Introductionmentioning

confidence: 95%

“…This minimizes environmentally hazardous material disposal of the traditional built up roofing (BUR) system (which the SPF roof system can encapsulate). SPF roofing systems make up less than 3% of roofs in the industry (Kashiwagi, et. al, 2016a).…”

Section: Introductionmentioning

confidence: 99%

“…The Alpha SPF roofing system has been documented as a high performing system (Kashiwagi, et. al, 2016a).…”

Section: Introductionmentioning

confidence: 99%

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The Value of Alpha SPF Roofing: An Alpha Case Study at William Lipscomb Elementary School

Kashiwagi

Zulanas

Gajjar³

2020

japiv

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An Alpha roof is a type of Spray Polyurethane Foam (SPF) roofing system that has been documented to be one of the highest performing roofs in the industry. Despite the high level of performance of the Alpha SPF roofs, owners still try to protect themselves by purchasing warranties. When the Dallas Independent School District (DISD) did not receive enough funding to purchase the Alpha roofs for their school buildings, general contractors started shopping the Alpha contractors. The demand for Alpha roofs during DISD bond programs exceeded the supply of Alpha vendors. DISD lowered the requirements and the contractors and manufacturers delivered lower quality roofs. DISD still required the performance of the Alpha roofing system, even though they bought lower performing systems without the quality control requirements of the higher performing Alpha roofs. DISD was not happy with the lower performance on some of the inexpensive roofs. This paper describes a case study that proposes that high roof performance is a result of expert contractors proving their past performance, detailed preplanning, manufacturers doing quality control, contractors tracking their time and cost deviations and independent third party inspections. The expert Alpha contractor completed the project with the best dimensional stability metrics (dimensional stability is a metric of long lasting roofs). The roof installation was completed in 20 days and saved DISD over 20% of the cost of the roof, despite an increase in the scope of work. It was the first DISD project that had no punch-list items after the final walkthrough. DISD was extremely satisfied with the roof and the Alpha program demonstrated its effectiveness in the installation of roofs.

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Section: Case Study At William Lipscomb Elementarymentioning

confidence: 97%

Section: Problemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

“…The Alpha SPF roofing system has been documented as a high performing system (Kashiwagi, et. al, 2016a).…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

The Value of Alpha SPF Roofing: An Alpha Case Study at William Lipscomb Elementary School

Kashiwagi

Zulanas

Gajjar³

2020

japiv

Self Cite

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Ponding and Blisters – Study of SPF roofs

Sharma,

Gajjar,

Clark

et al.

EPiC Series in Built Environment

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Multiple roofing systems in the construction industry and installing high-quality roofing products are vital for efficient building operations. Inadequacies in design, materials, installation workmanship or maintenance can result in defects and surface anomalies in the roofing membrane- like blisters, open seams, and holes. The current study investigates if there is a relationship between roof distress features - blisters and ponding and the low slope sprayed polyurethane foam (SPF) roofs, especially when roofs do not conform to the minimum slope of 1/4 inch. The researchers' team conducted a quality inspection survey for the SPF roofs (#96 non-granular and #1068 granular aggregate roofs). The visual observations populated data to develop an account of the percentage of blisters and surface defects such as ponding, penetrations, delamination, and bird pecks of the SPF roofs. Statistical analyses utilizing Pearson correlation, t-test, and Chi-Square test evaluated the correlation between ponding and blisters to confirm if non-conforming roof slopes lead to defects and surface anomalies. As a result, the study established that the roof's slope significantly influenced the ponding area of granular and non-granular aggregate SPF roofs. Ponding and blisters are likely to exist in non-granular while ponding in granular roofs.

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A Large Private Organization Tests the Best Value Approach Against Traditional Roofing Practices

Rivera¹,

Kashiwagi²

2019

japiv

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The Best Value Approach (BVA) is a new project delivery method that has been documented to increase performance and value. It does this by changing the traditional project delivery characteristics of managing the expert and focusing on the technical side of the project, to utilizing the expertise of the experts and using performance information and risk mitigation to manage the project. Large organizations have had difficulty in sustaining the BVA. A large private organization agreed to test the BVA on the replacement of a roofing system on one of its facilities. A case study research was performed on this project, using the grounded research approach, to identify if a large supply chain stakeholder can utilize the BVA to sustain high performance, value, and low price at the same time in a highly competitive marketplace. The research proposal is to document issues and benefits of utilizing the BVA. Identifying why large organizations have an issue with sustaining the approach and being utilized on more projects. The results of the paper will identify issues organizations have with implementing the BVA and the benefits in using the delivery system on construction services. The case study utilizes a stakeholder in the roofing industry supply chain and shows an approach to construction services that utilizes performance information and risk mitigation.

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The Cost Effectiveness of Alpha SPF Roofs: Casa View Elementary School Roofing Case Study

Cited by 3 publications

References 5 publications

The Value of Alpha SPF Roofing: An Alpha Case Study at William Lipscomb Elementary School

The Value of Alpha SPF Roofing: An Alpha Case Study at William Lipscomb Elementary School

Ponding and Blisters – Study of SPF roofs

A Large Private Organization Tests the Best Value Approach Against Traditional Roofing Practices

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