Building Ventilation

(Asphalt Shingles, Cedar Shakes & Shingles)

1 General

Eave protection is used to protect the eave and valley areas of steep sloped roofs from ice dam damage. An ice dam usually forms when the interior heat of the building warms the snow on the roof, causing it to melt and run down to the eaves. Normally, the eaves are overhanging the building and not heated from the inside. This allows the water to freeze and form an ice dam. As the ice dam grows bigger, it forms a barrier, which prevents water from draining. The water backs up behind the dam and gradually forces its way under the shingles (or shakes, tiles, etc.), through the roof deck, and into the structure. The results can range from minor staining to severe water damage to the structural members.

Eave protection is designed to prevent the water from reaching the deck and leaking into the structure. Recently a number of companies have developed self-adhesive, rubberized asphalt composite sheet materials. Properly formulated and installed, these sheets have the potential to provide a longer life and better performance. The slope and climate conditions are considerations for selection, please see Section 7.

Underlayment is used in the field areas (where eave protection is not required) of the roof to provide a secondary protection beneath the shingles during weather events that force water back up the slope underneath the shingles. Nail Applied materials qualify only as underlayment on roof slopes of more than 1:3 (4/12).

2 Accepted Materials

2.1 GAF

Shingle-Mate Fiberglass

Reinforced Organic Felt - Nail Applied

Stormguard Fiberglass

Reinforced Organic Felt - Nail Applied

Weather Watch Fiberglass

Reinforced Organic Felt - Nail Applied

Deck Armor

Polypropylene Synthetic - Nail Applied

2.2 HENRY COMPANY CANADA

Blueskin PE 200 HT

SBS Modified Bituminous Self-Adhered Membrane

Blueskin RF 100

SBS Modified Bituminous Self-Adhered Membrane

Blueskin RF 200

SBS Modified Bituminous Self-Adhered Membrane

Eaveguard

SBS Modified Bituminous Self-Adhered Membrane

Perma-Seal PG

SBS Modified Bituminous Self-Adhered Membrane

2.3 SOPREMA INC.

Lastoflex

SBS Modified Bituminous Membrane - Nailed Applied

Lastobond 195

SBS Modified Bituminous Self-Adhered Membrane

Lastobond 240

SBS Modified Bituminous Self-Adhered Membrane

Lastobond Shield HT

SBS Modified Bituminous Self-Adhered Membrane

Lastobond Shield

SBS Modified Bituminous Self-Adhered Membrane

Sopraseal Stick 1100

SBS Modified Bituminous Self-Adhered Membrane

2.4 IKO INDUSTRIES LTD.

Armourgard Ice & Water Protector

SBS Modified Bituminous Self-Adhered Membrane

Roofgard SB Underlayment

Spun Bonded Polypropylene Synthetic - Nail Applied

SBS Deck Base 44

SBS Modified Bituminous Membrane - Nail Applied

Roofgard Cool Grey

SBS Modified Bituminous Membrane - Nail Applied

2.5 BUILDING PRODUCTS OF CANADA CORP.

Gripgard

SBS Modified Bituminous Self-Adhered Membrane

Progard

SBS Modified Bituminous Self-Adhered Membrane

S-Gard

SBS Modified Bituminous Self-Adhered Membrane

2.6 MALARKEY ROOFING CO

Arctic Seal Ice & Water Guard

SBS Modified Bituminous Self-Adhered Membrane

Malarkey Right Start UDL Base

SBS Modified Bituminous Membrane Nail Applied

Malarkey Secure Start 1030 Underlayment

Lightweight Synthetic Underlayment - Nail Applied

2.7 CERTAINTEED CORPORATION

WinterGuard Sand

SBS Modified Bituminous Self-Adhered Membrane

WinterGuard HT (High Tack, High Temp.)

SBS Modified Bituminous Self-Adhered Membrane

WinterGuard Granular

SBS Modified Bituminous Self-Adhered Membrane

2.8 INTERWRAP INC.

Titanium UDL 25 Plus, UDL 30 and UDL 50

Polypropylene Synthetic - Nail Applied

Titanium PSU 30

SBS Modified Bituminous Self-Adhered Membrane

RhinoRoof U20

Multi-layer polymer-coated woven synthetic underlayment - Mechanically Attached

2.10 PROTECTO WRAP

Jiffy Seal Ice and Water Guard HT;

SBS Modified Bituminous Self-Adhered Membrane

Jiffy Seal Butyl Ice and Water Guard HT;

SBS Modified Bituminous Self-Adhered Membrane

2.11 OWENS CORNING CANADA LP

Deck Defense

Polyolefin Synthetic - Nail Applied

Weatherlock G

SBS Modified Bituminous Self-Adhered Membrane

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