Archive for March, 2010

Recertifying your propane tanks

March 29, 2010

Did you know that per DOT regulations, no individual is allowed to fill a cylinder that is overdue for periodic re-qualification with a hazardous material and then offer it for transportation?

More on filling tanks: during a visual inspection, a cylinder that  has any of the following characteristics cannot be filled and offered for transport

  • a crack or leak
  • bulging
  • a defective valve
  • a leaking or defective pressure relief device
  • evidence of physical abuse
  • fire or heat damage
  • detrimental rusting or corrosion

Back to re-certifying.  There is a stamped date on your tank, after 12 years you need to have your tanks re-certified in order to have them filled.  After this first recertification, it’s a 5 year period until your tanks require a visual inspection.  At this point, your propane tank is 17 years old…and it’s probably a good idea to buy a new one.

Roofmaster sells (and can re-certify) all types of propane tanks, from a 5 gallon (20 lb) up to a 25 gallon (100 lb).  We can also fill your propane tanks in our Monterey Park branch


Origins of Lite Wall Tubing

March 24, 2010

We are often asked why do we call the tubing roofer’s use to pump asphalt to the roof, “Lite Wall Tubing”.

Well, many years ago, Roofmaster was asked to develop a way to get asphalt to the top of Hollywood Park, a Los Angeles horse race track.  Deryl Yundt, the founder of Roofmaster came up with a pump, mounted on a cart, that used a double line of black iron pipe that circulated asphalt to the roof and back, with a valve on the roof to draw off the “hot”.

What we found, is by the time the asphalt was at the top, the process of heat transfer due to the thickness of the pipe, lowered the temperature of the asphalt to the point that it did not apply correctly.

So, we came up with a thin walled tubing, figured a way to attach pipe unions so they could be linked together and bingo, we have Lite Wall Tubing.

The first unions we installed were made by Stockham Valves and Fittings.  This turned out to be the standard union used in the Roofing Industry.  When Stockham was sold in the early 1990’s, Roofmaster had a manufacturer make a union with the old Stockham union brass seat and thread pattern, so it would not have an effect on tubing that was in use.

Originally we welded the unions directly to the tubing, but when customers started asking for knock unions because they could never find the pipe wrenches needed to assemble the tubing, we came up with couplings welded to the tubing and Heavy pipe nipples to attach the unions.  So in the case of now expensive knock unions, you can buy the tubing with couplings and replacement nipples and reuse the union.

When Roofmaster went looking for a good knock union, we found Catawissa unions.  They are distinct in they are an orange in color and have three lugs, thus our Tri Lug Knock union.  There is also a Capitol Two Lug knock union available.  Unfortunately, one brand does not match another, so the contractor has to make a choice and stick with that choice.

Lately, Roofmaster has taken the Stockham style union and welded ears onto the outer ring to make an economy knock union.  For other parts of the States, the Ward Union is popular.  We also do an economy Ward knock union.

Non-Flat Lite Kenda Hole-N-One tires

March 22, 2010

We’ve been filling the majority of our on deck equipment tires with our Non-Flat Lite (NFL) foam.  In addition to filling the tires we provide, we can also fill your existing pneumatic tires.

After seeing the amount of flat tires we filled on golf cars, we decided to carry Kenda’s Hole-N-One brand of tires, filled with our NFL foam.  These are 18×8.50-8 tires mounted on 4×4 bolt on rims.  We offer 3 colors of rims:

Kenda Hole N One Silver – P/N 460058

Kenda Hole N One White – P/N 460054

Kenda Hole N One Beige – P/N 460056

If you have any questions, give us a call at 800-533-8873 or shoot us an email: nfl @  In order to give you a quote, we’ll need to know the quantity of tires to be filled, the size of the tire (usually found on the sidewall) and the diameter of the rim.  This allows us to determine the amount of foam needed to fill your tire.

We can fill almost any tire, so long as they’re tubeless (or you’ve removed the tube) and the inside of the tire is clean.  Let us know if you’ve tried using Goop or any of the other tire sealants.  This may affect how the foam reacts.

Double Insulated tools

March 18, 2010

We get lots of calls about why the Leister Triac-S gun only has two legs and no ground on its power cord.

Leister Triac-S gun

If you click on oshagroundinfo or osha double insulated, you are able to obtain chapter and verse from O.S.H.A.  Here is the verbage from the O.S.H.A. info sheet:

“Hand held tools manufactured with non-metallic cases are called double-insulated. If approved, they do not require grounding under the National Electrical Code.  Although this design method reduces the risk of grounding deficiencies, a shock hazard can still exist.”

This is good information for your safety meeting planning and you might want to print a copy to keep with your Double Insulated Leister Triac-S.

Make-A-Clamp Kits

March 16, 2010

We’ve heard from many of our customers about these popular Make A Clamp kits.

Normally, these kits come with 50′ of band and 50 clamps.  What we discovered was contractors would run out of band but have buckets of clamps left over.

We’re happy to announce the arrival of a few new kits:

671401 Make A Clamp Kit consists of 100′ of band and 25 clamps

671402 Make A Clamp Kit consists of 50′ of band and 10 clamps

671405 Make A Clamp Kit consists of 100′ of band and 10 clamps

671406 Make A Clamp Kit consists of 50′ of band and 5 clamps

671410 Make A Clamp Kit consists of 8.5′ of band and 3 clamps

We have discontinued the 671400 Make A Clamp (50′ and 50 clamps)

We always appreciate feedback from our customers (, and in this instance, we were able to offer a more tailored product to better suit your needs (with less waste!)

The Basemate Ladder Stabilizer

March 12, 2010

We’d like to introduce the Basemate Ladder Stabilizer!

Basemate - P/N 103050

This is a neat ladder leveler that is unique in that it’s the only design out there that is non-penetrating.  It also can be installed on most fiberglass, aluminum and wood extension ladders.  It features a patented triple action locking system with one foot operation, and two built-in bubble indicators that will show when you’re level with the ground.

Why risk a serious injury due to falling from an unsafe ladder, when you can throw one of these in the back of your truck, and attach to virtually any of your ladders on the fly!  Great as a gift for the Do-It-Yourselfer who’s used to stacking bricks or rocks under one leg to stabilize a ladder on a slant (or stairs)

Aluma Wood Extension Ladders

March 10, 2010

Aluma Wood extension ladders were roofing favorites for a long time.  They were a combo of wood side rails, aluminum rungs (each rung was rodded), in addition to a flare base. It was lighter than a wood ladder (alum rungs), sturdier than aluminum (wood side rails) and had the stability of the flare base.

Unfortunately, Aluma Wood ladders were discontinued in 2007, and we sold our last Aluma Wood ladder in early 2008.  Roofers enjoyed these ladders because they wouldn’t “walk” or twist like an aluminum ladder due to the stability of the wood side rails.  With this in mind, we’ve also seen a decrease in the overall availability wooden ladders (due to the decrease in availability of quality wood for the side rails).

We carry a wide variety of other ladders and ladder accessories to help you solve your roofing challenges

Roof Saw/Tear-Off tip

March 2, 2010

Are you having trouble with your roof saw’s engine getting covered in grit and grime during tear off?

Here’s a tip we’ve heard around the yard for a while.

Spray it with Pam before operating.  You may want to opt for the higher temperature Grilling version.  This allows for easy clean up – you can just wipe away most of the dust and grime from the engine, thereby reducing maintenance costs, and allowing your engine to run more efficiently.

Propane Tank tips

March 1, 2010

Have you ever had trouble filling your 5 Gal LPG Tank?

5 Gallon Propane Tank

5 Gallon Roofmaster Propane Tank

Before you bring it back thinking it’s defective, you may want to try this trick:

Place a 2×4 board on the ground, grab the handle of the tank, and smack the bottom of the tank against the board.  These 5 gallon tanks are shipped without any air, and sometimes the OPD valve accidentally closes shut.  Quickly banging the tank down can usually solve this problem.  If the tank continues to refuse to fill, then it’s time to bring it back (if it’s new….if your tank is over 90 days old, it’s no longer covered by the manufacturer’s warranty)

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