GAF Asphalt Shingle Roofing System - Construction Details

Oct 25, 2026

Uploaded by Theodore

Detailed construction drawings and specifications for the GAF Asphalt Shingle Roofing System used for BRANZ appraisal, including builders cross sections and multiple junctions such as eave, apron flashing, ridge and wall junctions, pitch changes, valleys, dormers, penetrations, vents, and fastener and fixing requirements. Provides installation guidance on underlay, plywood substrate, ventilation gaps, flashing returns and kick-out details, shingle overhang, and roof/wall intersection transitions. Includes scope and liability notes for correct detailing and approved applicator responsibilities, plus distributor contact information in New Zealand.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages41

Reading Time1 h 43 min

AccessFree to download

Builders Cross Section Eave Detail

Apron Flashing

Apron Flashing with Vent Roof/Wall Ridge

Roof/Wall Ridge with Vent Ridge Cladding

Ridge Beam Cladding Slope to Wall Detail Pitch Change Detail

Flat Roof Membrane Transition

Mansard Pitch Change Gutter Wall Junction Step Flashing Detail Barge End Detail

Apron Termination and Kick Out Flashing Detail

Gable to Ridge Detail and Dutch Dormer Gable Junction Detail

Specific Penetration Chimney Cricket Detail and Valley to Dormer Detail

Rain Water Spreader Pipe Penetration Detail and Master Flow Box Vent

Vent Valley Cladding Detail and Penetration Openings

Ridge Caps Fastening Detail

Ridge to Wall Detail and Roof to Wall Flashing Corners

Internal Valley/Cricket and PV Solar Panel Mount

Surface Intake Vent and Surface Exhaust Vent

Intertenancy Roof Junction and Fixing Specifications

Construction Notes and Collation Disclaimer

P02- P03- P04- P05- P06- P07- P08- P09- P10- P11- P12- P13- P14- P15- P16- P17- P18- P19- P20- P21- P22- P23- P24- P25- P26- P27- P28- P29- P30- P31- P32- P33- P34- P35- P36- P37- P38- P39- P40- P41- Roofing Roofing Logistics New Zealand LTD GAF distributor [www.gafroofing.co.nz](www.gafroofing.co.nz) Thursday, 5th July, 2018 CONSTRUCTION DETAILS FOR 'GAF ASPHALT SHINGLE ROOFING SYSTEM' BRANZ.529 2017 CONTENTS: BUILDERS CROSS SECTION EAVE DETAIL APRON FLASHING APRON FLASHING WITH VENT ROOF/WALL RIDGE ROOF/WALL RIDGE WITH VENT RIDGE CLADDING RIDGE BEAM CLADDING SLOPE TO WALL DETAIL PITCH CHANGE DETAIL FLAT ROOF MEMBRANE TRANSITION MANSARD PITCH CHANGE GUTTER WALL JUNCTION STEP FLASHING DETAIL BARGE END DETAIL APRON TERMINATION DETAIL KICK OUT FLASHING DETAIL GABLE TO RIDGE DETAIL DUTCH DORMER GABLE JUNC. DUTCH GABLE DETAIL SPECIFIC PENETRATION CHIMNEY CRICKET DETAIL VALLEY TO DORMER DETAIL RAIN WATER SPREADER PIPE PENETRATION DETAIL MASTER FLOW BOX VENT VALLEY CLADDING DETAIL PENETRATION OPENINGSHIP & RIDGE CAPS FASTENING DETAIL RIDGE TO WALL DETAIL ROOF TO WALL FLASHING ROOF TO WALL CORNERS INTERNAL VALLEY / CRICKET PV SOLAR PANEL MOUNT SURFACE INTAKE VENT SURFACE EXHAUST VENT INTERTENANCY ROOF JUNCTION CONSTRUCTION NOTES FIXING SPECIFICATIONS THESE DETAILS HAVE BEEN COLLATED FOR THE BRANZ APPRAISAL USE ONLY. THEY ARE TO SERVE AS A GUIDELINE FOR CORRECT DETAILING OF 'GAF ASPHALT SHINGLE ROOFING SYSTEM'. WHERE PRODUCT IS TO BE USED IT IS THE DESIGNERS REAPONSIBILITY TO ENSURE THAT THE CORRECT DETAILS ARE SHOWN ON THE PLANS AND SPECIFICATIONS. ROOFING LOGISTICS NZ LTD. WILL NOT BE HELD RESPONSIBLE OR LIABLE FOR ANY DAMAGES TO PROPERTY OR PRODUCT INSTALLED IN A MANNER OTHER THAN AS DIRECTED BY A TRAINED AND APPROVED APPLICATOR. For technical assistance call 0800 423355 [or visit www.gafroofing.co.nz](or visit www.gafroofing.co.nz) Exclusive GAF distributor for New Zealand 0800 423355 [info@gaf.nz](info@gaf.nz) ATF: Dairy Flat-Auckland Roofing Roofing Logistics NewZealand LTD GAF distributor [www.gafroofing.co.nz](www.gafroofing.co.nz) GAF Asphalt shingle roofing technical documents Builders Cross Section 10mm 150mm 35mm gap between truss end and noggs 150mm high blocking to fix step flashings Noggs 100mm x 50mm 150mm high blocking to fix apron flashing Keep noggs 60mm down from the roof wall junction for ventilation Wall roof intersection Valley detail Facia to be flush with Barge detail plywood substrate Ridge detail Hip detail Truss/rafter Noggs at ridge must allow for ventilation through ridge vent 60mm 60mm Exclusive GAF distributor for New Zealand 0800 423355 [info@gaf.nz](info@gaf.nz) ATF: Dairy Flat-Auckland Roofing Roofing Logistics New Zealand LTD GAF distributor [www.gafroofing.co.nz](www.gafroofing.co.nz) CONSTRUCTION DETAILS FOR 'GAF ASPHALT SHINGLE ROOFING SYSTEM' | Note: Min roof picth = 9°

| D-226+ roofing underlay over 15mm plywood substrate to be laid so as to extend over drip edge toward gutter
Plywood to terminate over the top of the outside face of fascia, Plywood should not extend past outside face of fascia. H3 plywood gutter strip not required. Drip edge flashing to hang into gutter
Shingles to have min 5mm overhang to gutter
Drip edge flashing with min 90mm return and 20mm face with 10mm kick out
Selected gutter
Selected fascia board
Note: 10mm gap between substrate and fascia to allow for ventilation | | --- | --- | | Note: It is recommended fascia to be installed before roof ply | | | | DRAWING:
EAVE DETAIL | DATE:
24 JUNE 2018 | PAGE:
3 |
Apprasal No 529 | | --- | --- | --- | --- | --- | | | DETAILS FOR:
ASPHALT SHINGLE ROOFING | SCALE:
N/A | | | Exclusive GAF distributor for New Zealand 0800 423355 [info@gaf.nz](info@gaf.nz) ATF: Dairy Flat-Auckland Roofing

FAQs

What is the document scope for the GAF asphalt shingle roofing system details?

The drawings are collated for BRANZ appraisal use only and serve as a guideline for correct detailing of the GAF Asphalt Shingle Roofing System.

Who is responsible for ensuring the correct details are shown on the plans and specifications?

The designer’s responsibility is to ensure the correct details are shown on the plans and specifications.

What installation guidance is given for ventilation and substrate/fascia interfaces?

The details specify ventilation gaps and positioning of noggs, including leaving defined air/ventilation gaps between components and guidance on plywood termination over the fascia to support correct flashing and shingle installation.

Oct 25, 2026

Uploaded by Theodore