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Commercial Roofing

Ventsulation

Ventsulation

Product Descriptive Name
Fiber Glass-Reinforced, Asphalt-Coated Venting Base Sheet
Product Short Description
Ventsulation® Felt may be used as a base sheet for any built up roofing or modified bitumen roofing system to be installed over a substrate that potentially contains moisture.
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Product Details

Features

Ventsulation

Features

Material meets the requirements of ASTM D 4897, Type II 

1" Embossed Waffle Pattern Grid Channels: Promotes moisture vapor venting. Helps prevent blistering of asphalt-based roofs when installed over potential moisture-containing substrates such as: Re-covers over existing roof membranes, lightweight insulating fill or gypsum decks.

Fiber Glass-Reinforcement Mat: Low moisture, excellent dimensional stability and resistance to rot make it an ideal replacement for organic base sheets. Provides a solid dimensionally stable substrate for other roofing membrane components.

Surfacing: Coarse minerals on one side.

Documents

BUR Installation and Details

When it comes to design, we've got the tools to get you from the desk to the roof. Here you will find all of the BUR specifications, 3-part specs, details and installation guides. If you have any questions when it comes to installation, please contact our Specifier Services Group for design and your local technical representative for the field.

 
EDGE CADPDF
BIT-4 (GTR) Roof Edge Gutter DWGPDF
BIT-4 Roof Edge with Presto Tite DWGPDF

 
EXPANSION, TIE-IN AND TRANSITION*CAD PDF 
BIT-1 (NLB) Base Flashing for Non Load Brng Wall-Curb to Wall EJDWGPDF
BIT- 5 Base Flashing for Non Load Bearing Wall & Metal EJDWGPDF
BIT- 7 Curb Mounted Roof to Roof EJ Cover DWGPDF

*ALSO REFER TO SPECIALTY ROOFING PRODUCTS TRANSITION & INTERSECTION DETAILS

 
CURBS AND CORNERSCADPDF
BIT-8 Prefabricated CurbDWGPDF
BIT-26 Base Flashing at Outside Corner DWGPDF
BIT-27 Base Flashing at Inside corner DWGPDF

 
DRAINS, PIPES, AND VENTSCADPDF
BIT-9 Plumbing Vent DWGPDF
BIT-10 One Way Roof Vent - FP-10DWGPDF
BIT-11 Metal Drain DWGPDF
BIT-21 Primary Metal Scupper in SumpDWGPDF
BIT-22 Overflow Metal ScupperDWGPDF
BIT-23 Vent Stack (Warm)DWGPDF

 
PENETRATION, EQUIPMENT SUPPORT AND PROTECTIONCADPDF
BIT-16 Roof Penetration PanDWGPDF
BIT-17 Lighting Rod on Roof Surface DWGPDF
BIT-PT-01 Bituminous Light SupportDWGPDF
BIT-PT-02 Bituminous Medium SupportDWGPDF
BIT-PT-03 Bituminous Heavy SupportDWGPDF
BIT-PT-04 DynaTred Traffic Pads with Pavers
DWGPDF
BIT-PT-05 DynaTred Traffic Pads
DWGPDF

 
WALL FLASHINGCADPDF
BIT- 1 (LB) Base Flashing for Load Brng Wall with Counterflashing DWGPDF
BIT-2 (WL) Base Flashing for Wall less than 24 inches DWGPDF
BIT-3 (WH) Base Flashing for Wall more than 24 inched with Coping DWGPDF
BIT-3 (WL) Base Flashing for Wall less than 24 inches with Coping DWGPDF
BIT-6 (TH) Base Flashing for Wall more than 24 inches with Coping DWGPDF
BIT-6 (TL) Base Flashing for Wall less than 24 inches with Coping DWGPDF
BIT-15 (E) EPDM Wall Covering with BUR Base Flashing DWGPDF
BIT-15 (E) Alt-EPDM Wall Covering with BUR Base Flashing DWGPDF
BIT-15 (P) PVC Wall Covering with BUR Base Flashing DWGPDF
BIT-15 (T) TPO Wall Covering with BUR Base Flashing DWGPDF

 
EDGECADPDF
DFE-4 (PRESTO LOCK) Facia, Presto Lock™ Fascia System                                           DWGPDF
DFE-4 (GS) Gravel StopDWGPDF
DFE-4 (GS-ALT) Gravel Stop (Alternate)DWGPDF
DFE-4 (GTR) GutterDWGPDF
DFE-4 (PRESTO TITE) Presto-TiteDWGPDF
DFE-4 (RFS) Rail Fascia System Roof EdgeDWGPDF
DFE-4 (RMCF) Raised Metal Cant FasiaDWGPDF

EXPANSION, TIE-IN AND TRANSITIONCADPDF
DFE-1 (NLB) Curb to Wall Expansion JointDWGPDF
DFE-5 (NLB-ALT) Metal Expansion Joint (Alternate)DWGPDF
DFE-7 Roof-to-Roof, Curb Mounted, Expand-O-Flash®                                                  DWGPDF

 
CURBS AND CORNERSCADPDF
DFE-27 Inside CornerDWGPDF
DFE-26 Outside CornerDWGPDF
DFE-8 PrefabricatedDWGPDF
DFE-8 (Skylight) Prefabricated CurbDWGPDF
DFE-19 Roof Hatch Curb                                                                                                     DWGPDF

 
PENETRATION, EQUIPMENT SUPPORT AND PROTECTIONCADPDF
DFE-16 Penetration PocketDWGPDF
DFE-17 Lightning Rod, Surface Mount  DWGPDF
DFE-18 JM ENRGY Anchor - SBS AdheredDWGPDF

 
WALL FLASHINGCADPDF
DFE-1 (LB) Masonry Wall with Counter FlashingDWGPDF
DFE-2 (LB) TWO PLY BASE FLASHING FOR LB MASONRY WALL COUNTER FLASHINGDWGPDF
DFE-2 (PT) PERMA TITE COPINGDWGPDF
DFE-2 BASE FLASHING WITH SURFACE MOUNTED COUNTER FLASHINGDWGPDF
DFE-3 (WH) Wood Wall > 24" with CopingDWGPDF
DFE-3 (WL) Wood Wall < 24" with CopingDWGPDF
DFE-6 (TH) Masonry Wall > 24" with CopingDWGPDF
DFE-6 (TL) Masonry Wall < 24" with CopingDWGPDF
DFE-15 (E) EPDM Wall Covering with Bituminous Base FlashingDWGPDF
DFE-15 (P) PVC Wall Covering with BIT Base FlashingDWGPDF
DFE-15 (T) TPO Wall Covering with Bituminous Base FlashingDWGPDF
DFE-15 (T-ALT) TPO Wall Covering with Bituminous Base Flashing (Alternate)DWGPDF
DFE-20 (WL) Gypsum Wall on Metal Studs < 24" w/CopingDWGPDF
DFE-20 (WH) Gypsum Wall on Metal Studs > 24" w/CopingDWGPDF
DFE-24 Base Flashing for Venting Lightweight ConcreteDWGPDF

VAPOR BARRIER SA DETAILSCADPDFBIM
VB-1 JM Vapor Barrier SA - Wall Base DetailDWGPDF-
VB-1 (ALT) JM Vapor Barrier SA - Wall Base Detail - Alt                                                DWGPDF-
VB-2 JM Vapor Barrier SA - Pipe Penetration DetailDWGPDF-
VB-3 JM Vapor Barrier SA - Drain DetailDWGPDF-
VB-4 JM Vapor Barrier SA - Detail at Field LapsDWGPDF-
VB-5 JM Vapor Barrier SA - Outside Curb DetailDWGPDF-
VB-6 JM Vapor Barrier SA - Inside Curb DetailDWGPDF-
VAPOR BARRIER SAR DETAILS                                                                                            CADPDFBIM
VB-1 JM Vapor Barrier SAR - Wall BaseDWGPDF-
VB-1 (ALT) JM Vapor Barrier SAR - Wall BaseDWGPDF-
VB-2 JM Vapor Barrier SAR - Pipe PenetrationDWGPDF-
VB-3 JM Vapor Barrier SAR - DrainDWGPDF-
VB-4 JM Vapor Barrier SAR - Field LapsDWGPDF-
VB-5 JM Vapor Barrier SAR - Outside CurbDWGPDF-
VB-6 JM Vapor Barrier SAR - Inside CurbDWGPDF-

2x4 Ft. Roof Insulation Fastener Placement

4x4 Ft. Roof Insulation Fastener Placement

4x8 Ft. Roof Insulation Fastener Placement

BM-12 Mechanically Fastened Base Sheet (12" o.c.)

BM-12,12,12 Mechanically Fastened Base Sheet (12", 12", 12" o.c.)

BM-18 Mechanically Fastened Base Sheet (18" o.c.)

BM-6 Mechanically Fastened Base Sheet (6" o.c.)

BM-7,7,7 Mechanically Fastened Base Sheet (7", 7", 7" o.c.)

BM-7,9,9 Mechanically Fastened Base Sheet (7", 9", 9" o.c.)

BM-75,75,75 Mechanically Fastened Base Sheet (7.5", 7.5", 7.5" o.c.)

BM-9,12,12 Mechanically Fastened Base Sheet (9", 12", 12" o.c.)

BM-9,18,18 Mechanically Fastened Base Sheet (9", 18", 18" o.c.)

BM-9,9,9 Mechanically Fastened Base Sheet (9", 9", 9" o.c.)

FA-16 Fully Adhered Cover (16-24-32)

FA-8 Fully Adhered Cover (8-16-32)

CBUA-12-6-4 Cover Board Urethane Adhesive Fastening

ICBUA-8-4-4 Insulation and Cover Board Urethane Adhesive Fastening

ICBUA-12-6-4 Insulation and Cover Board Urethane Adhesive Fastening

INUA-12-6-4 Insulation Urethane Adhesive Fastening

BM-9,9,9-TS Tape and Staple Attached Base Sheet (9", 9", 9" o.c.)

BM-9,9,9,9-TS Tape and Staple Attached Base Sheet (9", 9", 9", 9" o.c.)

Assembly Plate Use Instructions

*Please be sure to download the file before selecting your assembly.*

Built-Up Assembly Plates

3 Ply BUR Bonded to Insulation Assmebly Plate

3 Ply BUR Including Nailed Base Sheet Assembly Plate

4 Ply BUR Bonded to Insulation Assembly Plate

4 Ply BUR Including Nailed Base Sheet Assembly Plate

5 Ply BUR Bonded to Insulation Assembly Plate

5 Ply BUR Including Nailed Base Sheet Assembly Plate

Download the 3-Part BUR Master Spec

Installation Guides

JM BUR Installation Application Guide

JM Vapor Barrier Installation Guide

PermaFlash® Bituminous Flashing System Detail Instructions

PermaFlash® Bituminous Flashing System Penetration Flashing

Additional Resources

BUR Membrane Selector Guide

BUR Membrane Selector Guide - Español 

Adhesives and Cements Selector Guide

Insulation and Cover Board Selector Guide

Insulation and Cover Board Selector Guide - Español 

Coatings Selector Guide

Coatings Selector Guide - Español 

Fasteners and Plates Selector Guide

Resources

Building Owner Resources

Johns Manville offers one of the most comprehensive portfolios of commercial low-slope roofing solutions. We have a long standing dedication to providing solution-based systems for building owners.

Codes Corner

Here you will find quick links and cheat sheets to Johns Manville roofing systems code approvals and ratings. 

Guarantees and Roof Maintenance

Support services can include: conceptual product information, building science, wind uplift data, national and local code understanding, FM Global® and UL® regulations, fastening patterns and sheet layouts, installation guidelines and standard details.

Recycling Resources

Re-roofing mechanically attached or ballasted insulated single-ply systems now have the potential for recycling versus contributing to a landfill.

SmartBinder Resource Library 

Your resource for all JM documents in one place. 

Submittal Wizard

The Submittal Wizard is a tool to help you pull together the necessary documents for your submittal package.

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