WeldShield is also available in custom ordered fabrics as follows:

WeldShield 2090 FA-S – 20 oz/sy aluminized fiberglass
This product consists of an 18 oz/sy base fiberglass fabric with a 2 oz/sy aluminum bonded to one side for reflectivity. The base fabric is good to 1100 degrees F with the service temp on the foil to 300 degrees. This material is used when there is a need to reflect heat and/or light.

WeldShield 2390 WF-B – 23 oz/sy neoprene coated fiberglass WeldFlex
This product consists of a 20 oz/sy fiberglass fabric with a 1.5 oz/sy black neoprene coating on BOTH sides for ease in handling. Considered ideal for slag blanket applications it is a more expensive version of our stock WeldShield 2190 AF-B with the major difference being neoprene coating instead of acrylic.

WeldShield 1790 NF-P – 17 oz/sy salmon colored neoprene coated fiberglass
This fabric is designed for light duty curtain applications to contain sparks and splatter. 100 degrees F melting temp and 300 degrees F service temperature.

WeldShield 1890 HF-G – 18 oz/sy green Hypalon coated fiberglass
This is a high strength fabric that will not absorb oil or grease and displays exceptional puncture and abrasion resistance. Its service temp only extends to 300 degrees F, though, so it is still considered only for light applications.

WeldShield 4090 VF-G – 40 oz/sy gold vermiculite coated fiberglass
This is a very expensive high temp fabric generally sold only in small pads for welding, brazing and gas soldering in confined areas. Stronger than standard fiberglass with better insulative properties, the special coating disperses heat throughout the fabric. Continuous service to 1500 degrees F with intermittent excursions to 2000 degrees F and typically used for heavy duty welding blankets and stress relief blankets.

In only 3 1/2 minutes, the heat from a house fire can reach over 1100 degrees Fahrenheit.  (Fact Sheets about Injuries and Injury Prevention)

In a home fire, the peak temperature and duration of the fire can vary depending upon the size of the home, the materials used to construct the home, the response time of firefighters, etc. It is estimated that the typical peak temperature in a home fire ranges between 800 to 1200 degrees Fahrenheit. The typical time for firefighting authorities to bring a home fire into containment is estimated at 15 to 30 minutes.
Paper chars at approximately 402°F. To protect paper documents, the internal temperature of a safe must remain below 350°F while exposed to the conditions of the typical home fire. Thus at a minimum, a safe should provide enough fire resistance to keep the maximum internal temperature of the safe below 350°F, when exposed to external temperatures of 1200° for 30 minutes. (Liberty Safe & Security Products, Inc)

WeldShield 1790 SF-G & SF-R have a silicone coating that melts (burns) at 500 deg.
WeldShield 1890 F-W, 2490 F-W, 2490 AF-G & 2190 AF-B melts (burns) at 1000 deg.
WeldShield 1890 S-T & 3690 S-T silica blankets can handle the temp but will not protect documents inside.

Frequently Asked Questions

We have a requirement to put fire blankets around some semi-tires in our application. Our question is around how well does the material stand up to extended exposure to sunlight, water and freeze thaw cycles etc. Is it better to get a coated blanket for the environmental concern? Also after some fire exposure testing we may be requesting custom fit blankets for the longer application. Is that something you can do?

I would go with a coated fabric, either black WeldShield 2190 AF-B or gold WeldShield 2490 AF-G (see column choices 5 & 6 from left side of the table above) can be custom sized by clicking on "custom tarp configurator" link in paragraph above the table of stock sizes. An uncoated fiberglass or silica product could wick moisture and cause early breakdown of the fibers. Sunlight is no factor. As long as you are not talking cryogenic like temperatures, the cold should not have an effect on the blankets once they return to a reasonable temperature. They will get brittle at very low temperatures, below 32 degrees F, but would retain their resistance to slag, sparks, etc.

I'm looking for a welding screen, would these work for this application?

No, we would recommend you take a look at our other site dedicated to Welding Screens.