Clay and concrete roof tile attachment shall be in accordance with the manufacturer's installation instructions where applied in areas where the ultimate design wind speed exceeds 130 miles per hour (58 m/s) and on buildings where the roof is located more than 40 feet (12 192 mm) above grade. Where siding is provided on the vertical sidewall, the vertical leg of the flashing shall be continuous under the siding. Articles; Press Release; Tech Alert; Webinars; Future 2018 IBC Amendments Made Early Due to the Library Gardens Apartment Tragedy . Capture and share institutional knowledge within your team and company. Foamed-in-place roof insulation shall be installed in accordance with this chapter and the manufacturer's instructions. End laps shall be 4 inches, shall be not fewer than two layers applied as, follows: starting at the eave, apply a 19-inch strip. Minimum thickness of the, outside edge of plastic caps shall be 0.035 inch. Terne coating of 40 lb per double base box, field painted where applicable in accordance with, 0.027 inch minimum thickness: 99.995% electrolytic high-, ASTM D6162; D6163; D6164; D6222; D6223; D6298, As an alternative, self-adhering polymer-modified bitumen, As an alternative, a minimum 4-inch-wide (102 mm) strip of self-adhering polymer-modified bitumen membrane complying with ASTM D1970, installed in accordance with the, The cap nail shank shall be not less than 0.083 inch (2.11 mm) for ring shank cap nails and 0.091 inch (2.31 mm) for smooth shank cap nails. IRC Deck Code Requirements In order to obtain a building permit for a deck attached to a single family residential home, your plans must be reviewed to be in compliance with the IRC. Copper, brass, bronze, copper alloy and 300-series stainless steel fasteners shall be used for copper roofs. Nails shall be stainless steel Type 304, or Type 316 or hot-dipped with a coating weight of ASTM A153 Class D (1.0 oz/ft2). For roofs that provide positive drainage, re-covering or replacing an existing, Complete and separate roofing systems, such as standing-seam metal roof systems, that are designed to transmit the roof loads directly to the building's structural system and do not rely on existing roofs and, Where the existing roof has two or more applications of any type of. 2 0 obj Surface critical code sections based on your project inputs. Section R507. Liquid-applied roofing shall be installed in accordance with this chapter and the, Where required, an ice barrier shall comply with, The use of above-deck thermal insulation shall be permitted provided that such insulation is covered with an, Above-deck thermal insulation board shall comply with the standards in, The structural roof components shall be capable of supporting the, Flashings shall be reconstructed in accordance with. z���A3=;>'pα}0� ��ط�����9ܿ_��"E�F=X����b�S���Ͼnn>�����������4���Wld�?�����o�>>�~�ݟ���_�}���g|p���oz���fl����i�ѣ4÷��V�c��?�'?�o|�����:W�=|���_�����ׯ�7_�����?D��Q�AꑧŁ��N7N�\.tse������W����յ8�������WW������/�Ÿ�����o��c��G����5��\���M���燇������%>蟇/���o�a�0�%6 functionality. Built-up roofs shall be installed in accordance with this chapter and the manufacturer's instructions. fashion, parallel to and starting from the eave and lapped 2 inches, the ability of the shingles to seal. 1 0 obj Valley and flashing metal shall be a minimum uncoated thickness of 0.0179-inch (0.5 mm) zinc coated G90. 18. You may be looking for the Quick Roofing Guide to the International Building Code. Mineral-surfaced roll roofing shall not be applied on roof. Tiles with installed weight less than 9 pounds per square foot (0.4 kg/m2) require not less than one fastener per tile regardless of roof slope. Tile shall be applied in accordance with this chapter and the manufacturer's installation instructions, based on the following: Clay and concrete roof tiles shall be fastened in accordance with this section and the manufacturer's installation instructions. 26 gage [0.019 inches (0.5 mm)] corrosion-resistant sheet metal and shall extend 10 inches (254 mm) from the centerline each way for roofs having, Each bundle of shingles shall be identified by a. In areas where the average daily temperature in January is 25°F (-4°C) or less, solid sheathing is required on that portion of the roof requiring ... Los Angeles Residential Code > 9 Roof Assemblies > R905 Requirements for Roof Coverings > R905.8 Wood Shakes > R905.8.1 Deck Requirements > R905.8.1.1 Solid Sheathing Required. Building Codes: 2018 International Residential Code: Rafters: As an example of what you can find in Chapter 8 of the 2018 IRC, see: R802.4 Rafters. 2018 IRC 308.4.2 Glazing Adjacent to Doors. Exception: Detached accessory structures that do not contain conditioned floor area. Mineral-surfaced roll roofing shall be fastened to solidly sheathed roofs. Power-driven metal caps shall have a, minimum thickness of 0.010 inch. 12.) Projects provide a dedicated space to collaborate on code research. Asphalt shingles shall comply with ASTM D3462. In areas where there has been a history of ice forming along the eaves causing a backup of water as designated in Table R301.2(1), an ice barrier shall be installed for asphalt shingles, metal roof shingles, mineral-surfaced roll roofing, slate and slate-type shingles, wood shingles and wood shakes. End laps shall, horizontal (2:12), up to four units vertical in 12 units, layers applied in the following manner: apply a, starting at the eaves. Nails shall be corrosion resistant and not less than 11-gage, At the juncture of roof vertical surfaces, flashing and counterflashing shall be provided in accordance with this chapter and the, Roof valley flashing shall be of corrosion-resistant metal of the same material as the. Overflow drains having the same size as the roof drains shall be installed with the inlet flow line located 2 inches (51 mm) above the low point of the roof, or overflow scuppers having three times the size of the roof drains and having a minimum opening height of 4 inches (102 mm) shall be installed in the adjacent parapet walls with the inlet flow located 2 inches (51 mm) above the low point of the roof served. Cap nail shank shall have a length sufficient to penetrate through the roof sheathing or not less than. ����]�]�[�i��� �2��; �嬞^U��!�g$P����G�c��kl ����M8��\H)?�)�ab@�&������ 2018 IRC Significant Changes to Deck Provisions 21 R507.1 • Wood-framed decks use R507. <> ��BjBЖ����(lf���6��}�+3�9V��톹܍bS�|k��Lߪ��O�{kfb��}Q������tz�SF �2:X"╗!k���D Jhm�,,�2�(�!�F0Q�llWp����ʧ���P��W��1�$Q�9��Z5�mY!�j�ym���j����J�Jt��W�7�_��P��[6N|>��"�. Quick Roofing Guide to the International Residential Code. On roofs with slope equal to or greater than eight units vertical in 12 units horizontal (67-percent slope), the ice barrier shall also be applied not less than 36 inches (914 mm) measured along the roof slope from the eave edge of the building. Code changes set for inclusion in the 2018 IBC further clarify provisions on this topic (see below). Liquid-applied roofing shall have a design. A reliable and up-to-date source of codes. The installation of thermoplastic single-ply roofing shall comply with the provisions of this section. Perimeter tiles shall be fastened with not less than one fastener per tile. • For other decks refer to Section R301 for engineered design. Wood shingles shall be of naturally durable wood and comply with the requirements of Table R905.7.4. Some tables in this publication are excerpts from the larger tables in the 2018 IRC code book. Your selected jurisdiction and code year has limited Galvanized fasteners shall be used for steel roofs. Prescriptive Deck Details Design Document was not brought forward with the 2018 IRC Georgia Amendments. The bottom layer shall be 18 inches (457 mm) and the top layer not less than 36 inches (914 mm) wide. Alternatively, two 16-gage Type 304 or Type 316 stainless steel staples, with crown widths 7/16 inch (11.1 mm) minimum, 3/4 inch (19.1 mm) maximum, shall be used. x��]m��6r����} The installation of a new roof covering over an existing roof covering shall be permitted where any of the following conditions occur: A roof recover shall not be permitted where any of the following conditions occur: All feedback is helpful! <>/ExtGState<>/XObject<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> Weather exposures for wood shakes shall not exceed those set in Table R905.8.6. Wood shingles shall be installed in accordance with this chapter and the manufacturer's instructions. 1503.1General. Starting at the eave, apply, successive sheets 19 inches. Base flashing against a vertical sidewall shall be continuous or step flashing and shall be not less than 4 inches (102 mm) in height and 4 inches (102 mm) in width and shall direct water away from the vertical sidewall onto the roof or into the gutter. Generate a code sheet that integrates with your drawing set. Asphalt shingles shall meet the classification requirements of Table R905.2.4.1 for the appropriate ultimate design wind speed. Asphalt shingles shall be used only on roof. <>/Metadata 1002 0 R/ViewerPreferences 1003 0 R/PageLabels 1004 0 R>> ���i�P)5�F����zؙ�;= UkI(�Q^m�T�-I�A� ,���Vν�� Q�$��%�LbJ5*۷!P�d��V�hn=5��C�[�!J���:���%��Qk��(K���_ҝYW��4�� � The installation of wood shakes shall comply with the provisions of this section. 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