BYLTup Completes GAF Timberline HDZ R/S+ Reroof at Mayfield School in Pasadena

Key facts

• Project: Mayfield School, buildings 1 and 2, Euclid Avenue, Pasadena, CA; completed in 2024
• Contract: Commercial Improvement Contract (CIC) for a GAF Class A Timberline HDZ R/S+ shingle roof system
• Scope: tear-off of one layer of existing composition shingle, hauled to a proper dumpsite
• Warranty: GAF Golden Pledge as printed on the CIC, 40-year non-prorated material and 20-year workmanship
• Deck protection: GAF Tiger Paw Premium Roof Deck Protection, two layers on building 1 and one layer on building 2
• Ridge ventilation: 138 LF GAF Cobra Exhaust Mesh Roll Ridge Vent on building 1 (existing dormer vents cancelled) and 460 LF GAF Cobra Ridge Vent on building 2
• Shingles fastened with 5 coil nails each; hip and ridge trim is GAF 10-inch Ridglass; the contract names no color
• Work ran on an occupied school campus with driveway access, a clean site six days a week and Cal/OSHA procedures
• BYLTup California license CSLB #1091357 (C-39 roofing, C-10 electrical); phone (562) 414-4425

What did BYLTup do at Mayfield School in Pasadena?

BYLTup, a Long Beach roofing, solar and rain gutter contractor, tore off the existing sloped composition shingle roofs on buildings 1 and 2 at Mayfield School on Euclid Avenue in Pasadena and installed a GAF Class A Timberline HDZ R/S+ shingle system in 2024. The work was a full replacement under a signed Commercial Improvement Contract, not a patch.

What materials and system did BYLTup install on the Mayfield School roofs?

BYLTup installed a full GAF steep-slope system on Mayfield School buildings 1 and 2 in Pasadena: Timberline HDZ R/S+ Class A shingles fastened with five coil nails each, Tiger Paw deck protection, Storm Guard leak barrier, Pro-Start starter strips, galvanized metal and flashings, Cobra ridge ventilation, and 10-inch Ridglass hip and ridge trim. The contract covered tear-off of one layer of existing composition shingle, hauled to a proper dumpsite; extra layers, if found, were a unit extra rather than part of the base. Other named components were new 2 inch by 2 inch galvanized edge metal at the roof perimeter and new galvanized valley metal. GAF Tiger Paw Premium Roof Deck Protection went on in two layers over building 1 and one layer over building 2. GAF Storm Guard Film Surfaced Leak Barrier went at valleys, wall terminations and roof penetrations. GAF Pro-Start starter strip shingles went at eave and rake. Galvanized roof-to-wall counter flashings, step flashings, and pipe and vent cap flashings were painted to match. The contract names no shingle color.

How was ridge ventilation handled on the two Mayfield School buildings?

BYLTup installed different ridge ventilation on each Mayfield School building in Pasadena, as named on the signed contract. On building 1, existing dormer vents were cancelled and 138 linear feet of GAF Cobra Exhaust Mesh Roll Ridge Vent covers the main ridges. On building 2, 460 linear feet of GAF Cobra Ridge Vent covers the main ridges.

What warranty covers the Mayfield School reroof?

The BYLTup reroof of Mayfield School buildings 1 and 2 in Pasadena carries GAF Golden Pledge as printed on the Commercial Improvement Contract: 40-year non-prorated material coverage and 20-year workmanship coverage. It is not a residential 50/25 form, and it does not apply to later, separate Mayfield School contracts.

How did BYLTup work on an occupied school campus?

The BYLTup contract for Mayfield School buildings 1 and 2 in Pasadena required complete driveway access for parking, loading, unloading and installation, a clean roof and job site six days a week, and compliance with Cal/OSHA procedures, city codes and manufacturer specifications. The campus stayed in use during the work. The write-up does not describe a campus shutdown.

Was there extra work beyond the original Mayfield School contract?

Yes. At Mayfield School in Pasadena, unsound decking found during BYLTup's tear-off led to signed change orders covering plywood replacement on buildings 1 and 2, plus primed and painted siding at the building 2 overhangs. These extras stayed on written work orders and did not change the GAF Timberline HDZ R/S+ system on either building.

What steps did BYLTup follow to complete the Mayfield School reroof?

BYLTup worked in five stages at Mayfield School in Pasadena: tear-off of one layer of composition shingle, deck protection and leak barrier, edge metal, starter and flashings, the GAF Timberline HDZ R/S+ shingle field, and ridge ventilation. Each stage followed the signed Commercial Improvement Contract for buildings 1 and 2. Stage details: (1) Tear-off: crews removed one layer of composition shingle from both buildings and hauled it off site. (2) Deck protection and leak barrier: Tiger Paw deck protection, Storm Guard leak barrier at valleys, wall terminations and penetrations, and new galvanized valley metal. (3) Edge, starter and flashings: galvanized edge metal, Pro-Start starter strips at all eaves and rakes, and painted galvanized flashings with collars. (4) Shingle field: Timberline HDZ R/S+ Class A shingles with five coil nails each, plus 10-inch Ridglass hip and ridge trim. (5) Ridge ventilation: 138 LF Cobra Exhaust Mesh on building 1 and 460 LF Cobra Ridge Vent on building 2.

When was the Mayfield School reroof done?

BYLTup completed the Mayfield School buildings 1 and 2 reroof in Pasadena in 2024. The write-up cites CompanyCam photos from August 2024 showing the shingle field, ridge, vents and pipe flashings on Euclid Avenue. BYLTup published the write-up on its blog on August 30, 2026, so it describes a 2024 project.

Is this BYLTup's only roofing work at Mayfield School?

No. This page covers only BYLTup's 2024 Commercial Improvement Contract for Mayfield School buildings 1 and 2 in Pasadena. Later Mayfield School tickets on the same street, including a gym reroof and an administrative TPO tune-up, are separate files and are not described here.

What is BYLTup's contractor license and where is it based?

BYLTup holds California contractor license CSLB #1091357 with C-39 roofing and C-10 electrical classifications, and Arizona licenses ROC 360365 and ROC 360990. Its main office is at 20960 S Brant Ave, Long Beach, CA 90810, with regional offices in Desert Hot Springs and Costa Mesa. Phone: (562) 414-4425. Credentials include GAF Master Elite (residential) and GAF GoldElite (commercial).

Frequently asked questions

What roofing system did BYLTup install at Mayfield School?

BYLTup installed a GAF Class A Timberline HDZ R/S+ steep-slope shingle system on buildings 1 and 2 at Mayfield School in Pasadena, with edge metal, deck protection, leak barrier, flashings, starter strips, ridge ventilation and GAF 10-inch Ridglass hip and ridge trim.

What warranty does the Mayfield School reroof carry?

It carries GAF Golden Pledge as printed on the Commercial Improvement Contract: 40-year non-prorated material coverage and 20-year workmanship coverage.

When was the Mayfield School buildings 1 and 2 reroof completed?

BYLTup completed it in 2024. The write-up cites CompanyCam photos from August 2024 and was published on August 30, 2026.

Did the ridge ventilation differ between the two buildings?

Yes. Building 1 received 138 linear feet of GAF Cobra Exhaust Mesh Roll Ridge Vent after its existing dormer vents were cancelled, and building 2 received 460 linear feet of GAF Cobra Ridge Vent.

Did the school stay open during the BYLTup reroof?

The campus stayed in use. The contract required driveway access, a clean roof and site six days a week, and Cal/OSHA procedures.

Does this project cover all of BYLTup's work at Mayfield School?

No. It covers only the 2024 contract for buildings 1 and 2. A later gym reroof and an administrative TPO tune-up are separate projects.

What is BYLTup's license number?

BYLTup holds California contractor license CSLB #1091357, with C-39 roofing and C-10 electrical classifications, and Arizona licenses ROC 360365 and ROC 360990.