2 Ply Mod Bit Roofing Details

Modified bitumen roof systems can be installed with the common torch method asphalts or cold adhesives.
2 ply mod bit roofing details. A standard sbs modified bitumen roof system is a two ply system applied in rolls that overlap the edge of the previous roll. Wind uplift is a primary concern when installing a retrofit single ply roof system rsprs over a structural metal panel roof. This technology was applied to the design of our two ply engineered roof systems in which the workhorse base ply absorbs roof stresses while the top ply shields the base from the elements and mechanical abuse. Mod bit bur hybrid systems.
Multi ply modified bitumen membranes have a stable thickness while single ply. Hold your cursor over the file name to view when a drawing was last updated. 3 2 dibiten smooth surfaced two ply specification 3 2a edge detail 3 2b curbs and parapet walls 3 2c metal coping 3 2d pipes and similar protrusions 3 2e roof drains 4 1 detail drawings for dibiten single ply applications 4 1a edge detail 4 1aa edge detail gutters 4 1b parapet end wall 4 1bb parapet side wall 4 1c parapet and inside corners. Hybrid systems include a very small specialized category of low slope commercial roofing systems using a combination of mod bit and bur.
Multi ply modified bitumen roofing systems providing extra protection for your roof the primary benefit of a bituminous roof system is a thick assembly comprised of multiple layers. Existence expectancy of the 2 ply modified bitumen roofing product is generally recognized as fifteen to twenty many years of service existence. To minimize the chance of roofing system failures always remember to consider the quality of material being used. These hybrid systems are specified for certain situations and are typically comprised of two or three hot mopped glass fiber felts followed by a modified bitumen cap sheet.
The detail drawings are grouped by details and can be downloaded below in dwg or pdf format. Existence expectancy of modified bitumen roofing system. To learn more about our engineered roof systems click on a selection below. Firestone has developed cad drawings of its tpo installation details to assist roofing professionals with the specification of firestone tpo roofing systems.
Astm e 1592 physical testing was performed on three test roof assemblies in order to determine the wind uplift resistance of an rsprs installed over existing structural metal panel roof systems fastened directly into purlins. Modified bitumen roof offers excellent waterproofing and insulation characteristics and it is a fireplace wind and hail ranked roofing system.