B08_Attachment_1_Replace_Wood_Shingle_Roof_Muir_House_SOW.docx

Re-Roof South addition of Muir House 2025 Statement of Work

Scope This project is to replace 1500 square feet (+- 100 sq.ft.) of ASTM E108 UBC 15-4 cedar Class “B” wooden shingles on the John Muir House in Martinez, Ca. The shingle orientation will be replaced in kind with 24 inch long, x 3”-16” inch wide cedar wooden shingles maintaining a 4 ½ inch exposure throughout. The project includes replacement of all ridge boards.

Location Project is located at John Muir National Historic Site, 4202 Alhambra Avenue, Martinez, CA. 94553

Contact Work to be coordinated and approved by John Muir National Historic Site Contracting Officer Representative (COR) Brian Garrett. The COR can be reached by phone at 925-228-8860 ext. 6413.

Special Conditions/Precautions Work may be conducted from 7:00 a.m. until 3:00 p.m. Monday through Friday only however clean up may continue until 4 pm. It will be required that the contractor work closely with the staff to ensure safe entry and exit for our visitors throughout the project. The contractor must provide a portable toilet for their use. Placement will be coordinated with the COR. All landscaping must be protected with plastic or like material, removing nightly and replacing daily. All debris must be cleaned up daily. The contractor will provide any scaffolding needed and a secure temporary fencing around job site. This fencing can be of a general type like the orange plastic fencing be able to moderately restrict access. At project completion, all work areas must be clean and free of debris. Tools and materials may not be carried through the Muir house unless approved by COR. These items must be handled from the exterior of the house. John Muir NHS is a no smoking site. The front parking lot is the only designated smoking area. All contractor vehicles will be parked in the front lot unless actually in use.

The John Muir House, its components and landscape are historic. Caution must be taken not to damage historic fabric or landscape while work is in progress. Scaffolding and ladders must be placed and used in such a way as to not damage landscaping, sidewalk or any part of the structure. Nothing can be attached to the structure. If scaffolding or ladders must come into contact with the historic sidewalk, an adequate load transfer material such as a 4 x 12 at least 12 foot long will be used. If man lifts or any other vehicles are used they absolutely must not be driven on/over or come into contact with the historic sidewalk. During the project the east kitchen porch with the wheelchair lift must be accessible at all times. Understanding that at some point the porch will need to be closed for safety, the COR will work with contractor to work around this as much as possible. The roofs of the east and west porches are not capable of any load so no scaffolding may be set on the roofs. The gutters are made of wood and are highly susceptible to damage. Extra care must be taken to not damage the wooden gutters. The integrity and protection of historic fabric and landscape will be the contractor’s responsibility. The attic is an exhibit area that will be closed during the project. Contractor will be responsible for the attic clean up at the end of the project. Our cultural department will cover the exhibits and artifacts prior to the start of the project. The contractor will be responsible for replacement or repair, and any costs related to the damage of historic fabric or landscape. The contractor will ensure all work performed will be free of defects and poor workmanship and will repair or replace any such items that do not meet project specifications.

Work to be Performed Remove lightning rods, cables and fasteners and store for re-use. Remove all existing wood shingles, any felt and ridge boards taking great care as to not damage the roof sprinkler system, skip sheathing, moldings or rafters. Roof sprinkler system may be disassembled but must be reassembled to existing condition. Replace or repair any damaged moldings and any damaged skip sheathing. All wood and metal debris must be disposed of or recycled legally off site. Contractors are encouraged to recycle any material possible.

Repair or replace any damaged metal roofing, vents, crickets or flashing. Repair, re-prime and paint any damaged or new painted wood surfaces with 1 coat Dunn Edwards EZ Prime 708 exterior latex wood primer or equivalent and two coats of Dunn Edwards “Smoke White” #DE 1089 W701 Evershield exterior flat latex paint or equivalent. A mold inhibitor will be added per manufactures recommendations to all paints. Paint applied with airless paint sprayer or roller must be back brushed.

Paint any damaged metal surfaces with two coats of Dunn Edwards “Smoke White” #DE 1089 W701 Evershield exterior flat latex paint or equivalent.

NOTE: Paint must be applied per manufacturer’s specifications including temperature and climate conditions. All waste paint and thinner must be contained and disposed of legally off site. All unused paint and solvents will be removed daily.

Install any flashing that was removed or replace any that were damaged. Repair instead of replacement of any damaged flashing must be approved by COR prior to the repairs.

Install new shingles manufacturers per specifications. Shingles are to be installed with a 4 ½ inch exposure.

All paint/materials must be approved by COR prior to installation.

Install new ridge boards and any moldings that were removed. Re-install roof sprinkler system. Re-install lighting rods, cables and fasteners adhering to any applicable building or fire codes.

SAFETY PLAN:

Contractor will provide a park safety officer approved safety plan that will contain all required OSHA/CAL OSHA requirements to include a fall protection plan with rescue and a certified scaffold installer/inspector if scaffolding is used, and other information as required by law.