Title: ROOF SPECIALTIES
Author: vesna tavcar
Last saved by: Vesna

ROOF SOECIALTIES

RELIEF VENT Specification

Note: This relief vents specification, with minor editing, has been written as a separate section of work. Alternatively, the appropriate clauses may be incorporated as part of a roofing  specification.

PART 1 GENERAL

1.01 	SECTION INCLUDES

	A.  Supply and installation of roof accessories, including:
	     1. Relief vents.
	     
1.02 	RELATED SECTIONS

	A.  Section 06100 - Rough Carpentry

B.  Section 07200 - Thermal Protection

	C.  Section 07500 - Membrane Roofing
	
	D.  Section 07900 - Joint Sealers

1.03 	REFERENCES

	[A. CRCA (Canadian Roofing Contractor’s Association)]

	[B. NRCA (National Roofing Contractor’s Association)]

	[C. SPRI (Single Ply Roofing Institute)]

	Note: Paragraph 1.03.D is applicable to RV-2 vents only.

	[D. CUFCA (Canadian Urethane Foam Contractor’s Association) and CGSB-51-
                  GP 46MP Manual for "Installers of Spray Polyurethane Foam Thermal   
                   Insulation" and ASTM C1029-90 "Spray Applied Rigid Cellular   
                   [Polyurethane Thermal Insulation"]

1.04 	SUBMITTALS

A.	Manufacturer's descriptive literature for each product, including section or    

other type details.

	B.  Manufacturer's written installation instructions.

C.	Shop drawings and samples, when required, in accordance with Section  
      01300]. 

1.05 	QUALITY ASSURANCE

A. Roof accessories manufacturer to have minimum 5 years documented    
     experience in the design  and fabrication of roofing specialties and accessories.

1.06 	SPECIAL WARRANTY

	Note: [and condensation] below is applicable to RV-2 vents only.

A.	Warrant products installed under this section of work to be free of defects in  
      Materials and/or manufacture [and condensation] for a period of 20 years 
      when installed in accordance with the manufacturer's written instructions.

	PART 2 PRODUCTS

2.01 	MANUFACTURER

A.	Provide products as manufactured by Thaler Metal Industries, 1-800-387-    
      7217 (Mississauga, Ontario, Canada) or 1-800-576-1200 (New Braunfels, TX) 
      or provide equal products by another manufacturer approved in advance by 
      the [Architect], based upon:
A.	

1. 20 year warranty against defects in materials and/or manufacture, as     
     applicable;
	      2.  maintenance free design;
	      3.  materials and sizes options, and thicknesses;
 4.  injection molded urethane insulation to CGSB-51-GP 46MP and ASTM     
      C1029-90, as applicable;
	      5.  treated deck flange, as applicable;
	      6.  written installation instructions.

2.02	MANUFACTURED UNITS

	Note: Delete clauses not applicable.

	RV-1 Relief Vent 

A.  Relief vents: Thaler [RV-1A] [RV-1C] relief vent consisting of [.064" (1.6
               mm) mill finish 1100-0T alloy aluminum] [ 32 oz. (1.09 mm) copper] with  
               perimeter vent holes and .064" (1.6 mm) aluminum insulation insert 
               accessory  having loose mineral wool filler and lower half  perforated with   
               1/4" (6 mm) dia. holes; 8-1/2" (216 mm) high; [bituminous painted deck     
               flanges][PVC coated deck flanges][plain deck flanges].
 
	RV-2 Relief Vents (Removable Hood)

B. Relief vents: Thaler [RV-2A] [RV-2C] standard 12" (305 mm) high, 4" (102  mm) I.D. relief vent consisting of [.064" (1.6 mm) mill finish 1100-0T alloy aluminum] [24 oz. (0.831 mm) copper] with integral deck flange, removable conical hood fitted with perforated collar, thick premolded urethane insulation and .064" (1.6 mm) mill finish 1100-0T alloy aluminum T-8 bitumen protection, loose mineral wool filler; [bituminous painted deck flanges][PVC coated deck flanges] [plain deck flanges].				   		   		   			
	RV-3 Relief Vents
 	
C. Relief vents: Thaler [RV-3A] [RV-3C] standard 12" (305 mm) high, 4" (102 mm) I.D. relief vent consisting of [.064" (1.6 mm) mill finish 1100-0T alloy aluminum] [32 oz. (1.09 mm) copper] integral deck flange with perimeter vent holes, EPDM diaphragm with PVC holder and .064” (1.6 mm) aluminum insulation insert accessory having loose mineral wool filler and lower half  perforated with 1/4" (6 mm) dia. holes; [bituminous painted deck flanges][PVC coated deck flanges][plain deck flanges].				   		   	
              
PART 3 EXECUTION

3.02 	INSTALLATION

	Note: Delete clauses not applicable.

	A. Install relief vents in accordance with manufacturer’s printed instructions.
		 
	B. Install vents at the rate of one vent per 1000 sq.ft. (92.9 m²) of  roof.

           	BUR
C.	Set flashing deck flange in layer of plastic cement and flash in with 3 
      overlapping layers of felt flashing.

	Modified Bitumen
D.	Torch membrane until bitumen is fluid and set flange into fluid. Flash in flange with two overlapping layers of ModBit and seal with asphalt sealer. 

	Single Ply

E.	Set deck flange in layer of membrane adhesive and extend single ply up sleeve to highest elevation possible and clamp membrane to relief vent.

	Note: For PVC membrane, specify PVC coated deck flange by adding suffix P to 
            end of Thaler model number, e.g. RV-1A-P; weld roofing to deck flange using  
            PVC torch.

	PVC Single Ply

F.	Set deck flange in layer of membrane adhesive and extend single ply up
         sleeve to highest elevation possible and clamp membrane to vent. 
         Weld roofing to deck flange using PVC torch.

3.03 	FIELD QUALITY CONTROL

	A. Comply with the requirements of Section [01400 - Quality Control].

3.04 	ADJUSTING 

A.	Verify that all manufactured units have been installed in accordance with
      specifications and details, and will function as intended. Adjust any items
      where necessary to ensure proper operation.

3.05 	CLEANING

A.	Clean manufactured units using materials and methods approved by   
       manufacturer. Do not use cleaners or techniques which could impair  
                   performance of the roofing system.

	End of Section