BlazeStop® WF300 Intumescent Firestop Caulk is a latex-based firestop caulk designed for residential wood frame construction. WF300 Caulk is tested for addressing penetrations through wood/frame construction such as wood stud walls and floor/ceiling assemblies. Under fire exposure, WF300 expands to up to four times its original volume.
|Density:||11.4 lbs/gal (1.36 kg/L)|
|pH||7.4 to 8.4|
|Max In Service Temperature||120º F (49º C)|
|STC Rating (ASTM E90/ASTM C919)||61|
|(EPA Method 24/ASTM D3960)||33.3 lb/gal. (40.0 g/L)|
|Expansion Begins||350º F (176º C)|
|Volume Expansion:||>5X Free Expansion|
|Shelf Life:||2 Years|
|Item #||Case Qty. (min)||Qty.||UPC # 730573||Description||Weight|
|WF310||12||1||09710||10.1 oz. Tube (18.2 Cu. In., 300 ml)||.94 lbs (0.42 kg)|
|WF305||n/a||1||09705||5 gal. Pail (1155 Cu. In.,19.0 L)||58 lbs (26.3 kg)|
|WF320||12||1||09720||20 oz. Sausage (36 Cu. In., 592 ml)||1.59 lbs (0.72 kg)|
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STI’s Wood Frame fire & smoke products
The terms firestop and fireblock are very similar sounding, but there are critical differences between these two practices. Here are the major differences.
We understand the nuances of firestopping head-of-wall joints and other joint systems installed into or between wall systems. We offer flexible joint sealants and sprays or gasket materials that allow for dynamic movement.
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STI warrants that its products will be free of defects for one year from the date of purchase. In the event a product does not conform to this warranty, the sole and exclusive remedy is, at STI’s option, replacement of the product or refund of the purchase price. The warranty provided herein shall be void and of no effect in the event that the product is not installed in accordance with STI’s published instructions, listed systems and applicable building and safety codes. THIS WARRANTY IS IN LIEU OF ALL OTHER REPRESENTATIONS AND EXPRESSED OR IMPLIED WARRANTIES (including the implied warranties of merchantability or fitness for a particular use) AND UNDER NO CIRCUMSTANCES SHALL STI BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LOSSES, INCLUDING, WITHOUT LIMITATION, ANY LOSS OF REVENUE, PROFIT OR USE. Prior to use, the user shall determine the suitability of the product for its intended use, and the user assumes all risks and liability for subsequent use. No person other than an officer of STI is authorized to bind STI to any other warranty for any product for which this warranty is issued.
Did you know that many specifications for firestopping reference older fire test standards or obsolete products?
Let our firestop experts assist by reviewing your firestop specifications and making appropriate recommendations. STI provides this service free of charge.