Three ply poly aluminum foil facers laminated to the high performance polyisocyanurate foam core enable exceptional durability and water vapor resistance.
													
																	Dow super tuff r insulation under siding. 
									
	
		
	
																	How to install rigid foam under siding. 
																	On tuff r insulation one facer is a continuous sheet of aluminum foil. 
																	Thd sku 804395. 
																	Many houses built today have a double wall type of insulation with fiberglass batts fastened between the studs on the inside and rigid foam board over. 
															
													
									
	
		
	
																	Tuff r commercial insulation features a patented high performance polyisocyanurate foam core with reflective foil facers on both sides providing additional durability. 
																	Tuff r and super tuff r are polyisocyanurate insulation products consisting of a high insulating value closed cell foam core sandwiched between a choice of durable exterior facers. 
																	40 water absorption astm c209 by volume max. 
																	25 flexural strength astm c203 psi min. 
															
													
									
	
		
	
																	For 1 core foam 40 water absorption astm c209 by volume max. 
																	Tuff r commercial insulation is used in commercial construction behind a minimum 1 2 gypsum board or equivalent thermal barrier interior finish. 
																	Foam insulation it features a high performance polyisocyanurate foam core for durability and energy efficiency. 
																	It is lightweight moisture resistant and easy to install. 
															
													
									
	
		
	
																	Dow super tuff r sheathing 4 x 8 super tuff r insulation is one of the most durable and thermally efficient insulation products offered for residential applications today. 
																	Typical physical properties of tuff r of and super tuff r polyisocyanurate insulation property and test method value compressive strength 1 astm d1621 psi min. 
																	25 flexural strength astm c203 psi min. 
																	Tuff r and super tuff r polyisocyanurate insulation 2. 
															
													
									
	
		
	
																	0 1 water vapor permeance 2 astm e96 dessicant method perms 0 03 nominal density astm d1622. 
																	Tuff r and super tuff r polyisocyanurate insulation property and test method value compressive strength 1 astm d1621 psi min. 
																	Tuff r and super tuff r polyisocyanurate insulation products consist of a high insulating value closed cell polyisocyanurate foam core sandwiched between a choice of durable exterior facers. 
																	With a long term r value1 of 6 5 per inch both tuff r and super tuff r offer one of the highest insulation value of.