How to cut a hole in the profiled sheeting for the pipe

How To Cut An Ellipse For A Round Pipe Through A Pitched Roof

Cut holes for pipes in different materials

One of the first questions which inexperienced masters ask is which drill to drill metal with ? Actually, to answer correctly is not so easy. To work metal you need to use the special drill bits made of high-speed tool steel. Their cutting part is made with titanium nitride.

When choosing drill bits for metal drilling, basic and running are drills from high-speed tool steel, in the store they can be found at the marking HSS.

When working with cast iron, stainless steel and other hard-to-machine metals, you should use drills of carbide composition. The disadvantage is their very high price, which makes the work expensive.

If you choose a drill bit with one of the best cutting properties, it will be a tool with the addition of cobalt, which has a marking-P6M5K5. It is the best value for money.

Can you drill metal with a concrete drill bit? ?

There are times when you need to make an urgent hole in metal and only have a concrete drill bit at hand. On this drill, the tip is made of tungsten carbide, which makes it possible to drill concrete, brick with a hammering. Using such a drill to drill a hole in metal will not work. You can chew off the pobedite tip of the drill bit, especially if you try to use a large diameter drill bit or for drilling through thick metal. To summarize, it is not possible to drill metal with a pobedite drill bit.

However, if the drill bit is sharpened at the right angle, it is possible to drill metal.

Bypass the pipe, located on the ridge

This arrangement of the chimney or ventilation can be called the most correct. In this case, in principle, avoids such an unpleasant phenomenon as a snow. and the water falling on the roof, instantly goes on the slopes, not even delayed. The only disadvantage of this method is the need to cut into the ridge beam.

Here it is advisable to use an apron of smooth sheet metal. That part of it that is located below requires sealing sealants. The ideal is a strip of butyl rubber with an adhesive layer. On top of the same protection is arranged in the same way as in the other lines of contact. with strips.

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It is easy to install, it has excellent technical and performance characteristics, and it has a wide range of colors.

But despite all the convenience of installation, sometimes such a roof gives a leak, and often this leak occurs in the place where the chimney.

Today we will cover the question of how to get the pipe through the roof of corrugated boarding.

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Where it is better to output

Rules of installation of chimneys are specified in СНиП 41-01-2003 “Heating, ventilation and air conditioning”. So in SNIP there is a clear recommendation about the height of the pipe, which depends on its location:

  • If the chimney is located within 1.5 meters of the ridge, it must be higher than the roof by 30 cm.
  • If the chimney is located within 1,5-3 meters of the ridge, its height must match the height of the roof.
  • If the chimney is located within 3-10 meters from the ridge, the height of the pipe should be 12 degrees below the ridge.

To observe these recommendations is very important.

If you lower the height of the chimney draft may be insufficient, with overstated increases the risk of condensation, and it is very harmful, because it contains acids, destroying furnace brick.

But in SNIP does not specify where it is preferable to locate the passage of the pipe through the roof of profiled sheeting. At the same time, experts advise placing it on the ridge, or as close to it as possible.

  • First, it will prevent smoke from entering the attic.
  • Secondly, the smallest part of the chimney will remain in the cold zone, which will prevent the formation of condensation.
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