Polymer and Polypropylene vs. Foundry Siding

I am asked on a daily basis about different brands of Vinyl Shake Siding. There are many to choose from. There is Certainteed, Novik, Exteria, Foundry, etc…Which is the best? Is the thickest the best? What’s the difference?

Lots of differences in all panels so I’m just going to hit on a couple of points.

Foundry Split Shake Oatmeal

Expansion/Contraction – Foundry siding, which is a true PVC sidng, expands and contracts at 1/3 the rate of polymer and polypropylene panels. There will be no temperature gauge on the Foundry siding simply because it is not necessary to have one. Other panels have temp. gauges that basically indicate where to nail based on the temperature when the product is being installed. This is an excellent concept to provide for the high expansion/contraction rate. The problem I find is that most installers nail where they can and move on. So it may look good when the product is first installed but when the seasons change so do the laps.

Class 1A Fire Rating – Foundry siding is the only vinyl shake siding available that has a class 1A fire rating. This means is has a very low rate of spreadability. If you were to hold a flame to a polymer or polypropylene panel, they will ignite on fire and literally start dripping like candle wax. If you put a flame to the Foundry siding, it will not ignite. I will put a video demonstration soon.

Until next time.

Vinyl Jon —-OUT

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