Template:Materials - Eave Protection & Underlayment (ASM)

The problems resulting from the presence of condensation represent one of the major causes of damage to the structure and fabric of old and modern buildings alike. They are, therefore, of great importance to the specifier in his design role. The increased use of insulation and modern roof construction methods have created further major condensation risks within the roof void.

The specifier must ensure that the risk of condensation is minimised by ensuring the correct design, suitable ventilation in accordance with the B.C. Building Code, and specification of the most suitable underlay.

RoofStar-guaranteed metal roofing systems require a suitable underlay to ensure that any moisture produced by condensation is not introduced into the roofing system components or the structure of the building. Modified bituminous membranes that are not arranged under insulation must have a high softening point bitumen with a minimum flow temperature of 87.7°C (190°F) to prevent material displacement from heat transfer through metal panels during high temperature days. (See UNDERLAYMENT - Eave and Detail Protection (ASM Roof Systems)). All accepted modified bituminous self-adhesive membranes listed exceed a minimum flow temperature of 87.7°C (190°F.).

Accepted No. 30 Asphalt felt or RoofStar-accepted proprietary synthetic underlayments that meet or exceed the CSA A123.3 standards for No. 30 Asphalt Felt are acceptable for use on uninsulated wood decks sloped over 4" in 12". Manufacturer's limitations are to be followed.

For RoofStar-accepted No. 30 asphalt felts refer to BUR Felts in the Accepted Materials section of this Manual.

Click on a manufacturer's name to see the full list of their products accepted for use in the RoofStar Guarantee Program

Manufacturer	Product Name	Product Type	Reinforcement	Product Thickness - mm (mil)	Product Weight - Kg / m2 (lb / 1002 ')	Application Method	Eaves & Valleys	Underlayment	Special Notes
No. 30 Asphalt Felt	Various	Felt underlayment		Variable	Variable - see manufacturer specifications	Nail-applied			For uninsulated wood decks only with slopes of 1:3 (4" in 12") or greater
Building Products of Canada Corp.	Gripgard	SBS Modified Bituminous				Self-adhering
Carlisle Syntec Systems Canada	CCW-707 Roofing Underlayment	SBS Modified Bituminous	Fibreglass			Self-adhering
CertainTeed Corporation	DiamondDeck	Reinforced synthetic				Nail-applied
Firestone Building Products	Clad-Gard SA	SBS Modified Bituminous	Fibreglass			Self-adhering			Can be left exposed for up to 90 days
Firestone Building Products	Clad-Gard MA	SBS Modified Bituminous	Fibreglass			Self-adhering			Synthetic underlayment only for slopes greater than 5:12 / can be left exposed for up to 90 days
FT Synthetics	FT Synthetics PLATINUM	Water-resistant Polyolefin				Nail-applied			Underlayment Only for roofs 4:12 or greater
FT Synthetics	FT Synthetics GOLD	Water-resistant Polyolefin				Nail-applied			Underlayment Only for roofs 4:12 or greater
FT Synthetics	FT Synthetics SILVER	Water-resistant Polyolefin				Nail-applied			Underlayment Only for roofs 4:12 or greater
GAF	Stormguard	Reinforced Organic Felt				Nail-applied
Hal Industries Inc.	“Super” TILEMATE G100 FW	SBS Modified Bituminous	Fibreglass			Self-adhering
Henry Company Canada	Blueskin PE 200 HT	SBS Modified Bituminous	Fibreglass			Self-adhering
Henry Company Canada	Blueskin RF 200	SBS Modified Bituminous	Fibreglass			Self-adhering
Henry Company Canada	Eaveguard	SBS Modified Bituminous	Fibreglass			Self-adhering
IKO Industries Ltd.	Armourgard Ice & Water Protector	SBS Modified Bituminous	Fibreglass			Self-adhering
InterWrap Inc.	Titanium UDL 25	Polypropylene Synthetic				Nail-applied
InterWrap Inc.	Titanium UDL 30	Polypropylene Synthetic				Nail-applied
InterWrap Inc.	Titanium UDL 50	Polypropylene Synthetic				Nail-applied
InterWrap Inc.	Titanium PSU 30	SBS Modified Bituminous	Fibreglass			Self-adhering
InterWrap Inc.	RhinoRoof U20	Multi-layer polymer-coated woven synthetic underlayment				Nail-applied			Underlayment Only for roofs 4:12 or greater
Malarkey Roofing Products	Right Start™ UDL	SBS Modified Bituminous	Fibreglass			Nail-applied			For uninsulated wood decks only with slopes of 1:3 (4" in 12") or greater
Protecto Wrap Company	Jiffy Seal Ice and Water Guard HT	SBS Modified Bituminous	Fibreglass			Self-adhering
Protecto Wrap Company	Jiffy Seal Butyl Ice and Water Guard HT	SBS Modified Bituminous	Fibreglass			Self-adhering
Soprema Inc.	Lastobond 195	SBS Modified Bituminous	Fibreglass			Self-adhering
Soprema Inc.	Lastobond 240	SBS Modified Bituminous	Fibreglass			Self-adhering
Soprema Inc.	Lastobond Shield	SBS Modified Bituminous	Fibreglass			Self-adhering
Soprema Inc.	Lastobond Shield HT	SBS Modified Bituminous	Fibreglass			Self-adhering
Soprema Inc.	Sopraseal Stick 1100	SBS Modified Bituminous	Fibreglass			Self-adhering