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	Top Surface	Use as Slip Sheet	Nominal Thickness - mm (mil)	Application Method	Special Notes
No. 30 Asphalt Felt	Various	Felt underlayment	Non-woven Felt		Variable	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	‒
CertainTeed LLC	DiamondDeck	Reinforced synthetic	Synthetic Polymer		N/A	Nail-applied	Can be left exposed for up to 90 days
Firestone Building Products	Clad-Gard SA	SBS Modified Bituminous	Woven Polyethylene		1.00 (40)	Self-adhering	Synthetic underlayment only for slopes greater than 5:12 / can be left exposed for up to 90 days
Firestone Building Products	Clad-Gard MA	SBS Modified Bituminous	Not Stated		N/A	Self-adhering	Underlayment Only for roofs 4:12 or greater
FT Synthetics	FT Synthetics PLATINUM	Water-resistant Polyolefin	Polyolefin		0.50 (20)	Nail-applied	Underlayment Only for roofs 4:12 or greater
FT Synthetics	FT Synthetics GOLD	Water-resistant Polyolefin	Polyolefin		0.40 (16)	Nail-applied	‒
FT Synthetics	FT Synthetics SILVER	Water-resistant Polyolefin	Polyolefin		0.30 (12)	Nail-applied	‒
FT Synthetics	FT Synthetics PLATINUM HT-SA	Water-resistant Polyolefin	GRIPSPOT TM		1.04 (41)	Self-adhering	UV resistant for up to 180 days
FT Synthetics	FT Synthetics HYDRA	Water-resistant Polyolefin	GRIPSPOT TM		0.76 (30)	Nail-applied	Can be left exposed for up to 60 days
GAF	Stormguard	SBS Modified Bituminous	Not Stated		1.02 (40)	Self-adhering	‒
HAL Industries Inc.	“Super” Tilemate G100 FW	SBS Modified Bituminous	Woven Polypropylene		1.00 (40)	Self-adhering	‒
Henry Company Canada	Blueskin PE 200 HT	SBS Modified Bituminous	Blue-Cross Laminated Polyethylene		1.00 (40)	Self-adhering	‒
Henry Company Canada	Blueskin RF 200	SBS Modified Bituminous	Slip-resistant Film		1.00 (40)	Self-adhering	‒
Henry Company Canada	Eaveguard	SBS Modified Bituminous	Sanded		1.30 (50)	Self-adhering	‒
IKO Industries Ltd.	Armourgard Ice & Water Protector	SBS Modified Bituminous	Sanded		1.80 (71)	Self-adhering	For uninsulated wood decks only with slopes of 1:3 (4" in 12") or greater
Malarkey Roofing Products	Right Start™ UDL	SBS Modified Bituminous	Sanded		1.40 (55)	Nail-applied
Malarkey Roofing Products	Arctic Seal Ice & Water Guard	SBS Modified Bituminous	Sanded		1.52 (60)	Self-adhering	‒
Owens Corning Canada	Titanium UDL 25	Polypropylene Synthetic	Synthetic (not stated)		0.38 (15)	Nail-applied	‒
Owens Corning Canada	Titanium UDL 30	Polypropylene Synthetic	Synthetic (not stated)		0.63 (25)	Nail-applied	‒
Owens Corning Canada	Titanium UDL 50	Polypropylene Synthetic	Synthetic (not stated)		0.75 (30)	Nail-applied	‒
Owens Corning Canada	Titanium PSU 30	SBS Modified Bituminous	Synthetic Polymer		1.10 (45)	Self-adhering	Underlayment Only for roofs 4:12 or greater
Owens Corning Canada	RhinoRoof U20	Multi-layer polymer-coated woven synthetic underlayment	Not Stated		0.18 (7)	Nail-applied	‒
Polyglass USA, Inc.	Polystick MTS	Proprietary Compound	fibreglass mat		1.50 (60)	Self-adhering	‒
Protecto Wrap Company	Jiffy Seal Ice and Water Guard HT	SBS Modified Bituminous	tri-layer woven polyolefin		1.00 (40)	Self-adhering	‒
Protecto Wrap Company	Jiffy Seal Butyl Ice and Water Guard HT	SBS Modified Bituminous	tri-layer woven polyolefin		0.75 (30)	Self-adhering	‒
Soprema Inc.	Lastobond 195	SBS Modified Bituminous	Sanded		1.60 (63)	Self-adhering	‒
Soprema Inc.	Lastobond 240	SBS Modified Bituminous	Sanded		1.60 (63)	Self-adhering	‒
Soprema Inc.	Lastobond Shield	SBS Modified Bituminous	tri-laminate woven polyethylene		1.00 (40)	Self-adhering	‒
Soprema Inc.	Lastobond Shield HT	SBS Modified Bituminous	tri-laminate woven polyethylene		1.00 (40)	Self-adhering	‒
Soprema Inc.	Sopraseal Stick 1100 T	SBS Modified Bituminous	tri-laminate woven polyethylene		1.00 (40)	Self-adhering
Soprema Inc.	Sopralene Stick HR 40	SBS Modified Bituminous	Sanded		3.00 (120)	Self-adhering	May be used as an underlayment for slopes < 1:6 (2” in 12”)