What is a rain cap for?

What is a rain cap for?

Rain caps are metal guards with mesh or wire sides that are designed to fit over and cover the top of the flue. When installed correctly and undamaged, rain caps help keep moisture – as well as animals and debris – out of the chimney.

What is a rain cap on a roof?

The cap provides an elevated umbrella like structure that allows air to escape without allowing rain to fall into the attic. In order for the roof vent to remove heat and moisture from the attic, it should be paired with soffit or gable vents.

What is a standard chimney cap size?

With masonry (at least here in the Kansas City Metro) the common sizes are 8 by 8, 8 by 13, 13 by 13, 8 by 17, and 13 by 17. Now they do make one size caps that fit all but they do not work properly, they’re a poor fit. My suggestion: get someone at the top of your chimney that knows how to measure for chimney caps.

Do all chimneys need a rain cap?

Although a chimney will function without a chimney cap, it’s best to have one. Without a chimney cap, rain, snow, or other detritus can enter your chimney unhampered, causing damage to your house. It also keeps embers from escaping the chimney, preventing roof fires.

How much is a rain cap?

Chimney caps cost $35 to $550. Most products are made of galvanized or stainless steel. Copper runs about $200 to $300 more than other materials….Chimney Cap Prices.

Material Cost
Galvanized $35-$200
Stainless Steel $50-$500
Copper $150-$550

What is exhaust flap?

In emission control, exhaust gas flaps are used to divert the exhaust gas flow. In this way, they trigger the HC (Hydrocarbon) absorbers or bring the starter catalyst to operating temperature more quickly. A more recent method of emission control is the use of DeNOx catalytic converters.