Building Permit shall be posted on house prior to starting work
Roofing Contractor: $100,000.00 combine single limit liability insurance required. Certificate of insurance shall be submitted at time of application. The certificate shall identify the limits of the insurance, policy number, name of insurance company, effective date, date, expiration of the policy.
Design criteria: Based upon 2006 IRC, 30 lb. ground snow load. 90 mph wind speed exposure.
ICE AND WATER SHIELD IS NOT REQUIRED. Drip edge is required on soffits, rakes, and gables unless rakes and gables already have freeze board. Drip edge required per section 1507.9.3 2003 IBC.
Tear-off: All roofing material shall be removed prior to new application.
Underlayment: 4:12 slope and greater 1-layer of 15#. 2:12-3:12 slope 1-layer of 30#. Less than 2:12 slope requires modified bitumen. Low slope patio covers and accessory building require modified bitumen if dimensional shingles are used to match shingles on principal building.
Plank deck underlayment is allowed if spacing does not exceed 3/8”. Replace damaged or questionable roof sheathing.
Roof covering: Dimensional shingles. 3-tab shingles are not allowed. Replace damaged pipe jacks and roof vents. Add roof vents where needed case by case.
Fasteners: Per manufacturer’s installation instructions and ASTM F 1667 to meet 90 mph wind exp. C.
Inspection: A mid-roof inspection in NOT required. Make sure permit card is available for the inspector. All shingles are expected to lay flat.
Caulk all shiners i.e. roof jacks, roof vents, and ridge caps.
Prior to calling for inspection, cleanup all debris in yard and roof, and clean out gutters and downspouts. Please allow two (2) working days for inspection to be completed. Inspectors will not walk roofs if outside temperature exceeds 75 degrees as to not track new application.
Please respect the citizens of the Town of Johnstown and their property. The Town of Johnstown Building Department looks forward to working with each Roofing Contractor.
Enclosing an existing patio cover
Decks - Colorado Chapter ICC handout
Garage and storage sheds larger than 120 sq. ft.