The device of the roof of metal

By Admin | Roof And Roofing Materials
11 April 2016

To the roof is not leaking, keep warm and long to please its owners a beautiful view, it is necessary to equip all the rules.In addition, for each of the roofing material has its own subtleties and installation technology.In this article we analyze in detail - a device roof of metal.

Design and installation of roof of metal


  1. Warm roof - how to construct and why it is called
  2. particularly cold roof
  3. important element of the roof - sheathing
  4. elements roofing system
  5. Installation of metal
  6. final element of the roofing system
  7. device ventilation and migratory elements
  8. device security elements and their purpose
  9. drainage system
  10. Video instructions for installation of the roof system, "MetallProfil"

There are two fundamentally different approaches to the insulation of the roof at home, the so-called warm roof and cold roof.Depending on the type of roof will be slightly different and its device.So at the beginning we consider the features of each of these types of roofs, and then procee

d to those elements which are the same for these types of roofs.

Warm roof - how to construct and why it is called

This roof, which are insulated roof slopes, so the attic is quite comfortable, and you can arrange private accommodation t. E. The so-called attic.And it needs to carry out a series of operations by creating an entire roofing system.Consider a device of this roof.

provides protection from water

on the inside of metal can condense.So it does not drip onto the heater and soaked it is necessary to lay the waterproofing.For this purpose suitable membrane.They are better than the films that are permeable to vapor.Therefore, the moisture does not accumulate anywhere, and quietly goes out.Such superdiffusion capacity membranes perform good and save space (they are placed on the insulation without a gap).

first isolated valley.Membrane roll paves over its entire length, from the top.Joints in the valley and building closures sticking tape of the same grade as the diaphragm.On the rafters waterproofing placed from the eaves to the ridge, rolling rolls horizontally.The joints of the individual rolls make the rafters, the overlap between them - 15 cm. The sagging membranes is not allowed - they must be well stretched.

insulate the roof, and then put a vapor barrier

we continue to cook, "cake roof of metal."Just behind the waterproofing membrane on the inner side falls insulation.Most often used for such purposes mats basalt wool, but you can use other types of heaters.

  • details, see the article: insulation for roofs - make the right choice

mats of basalt fiber ukladvayutsya between the rafters of the roof.If you do not have to put one layer, and a few, the joints between the mats of the first layer of the second cover plates.Otherwise, cold bridges can make itself felt.Insulation vapor barrier is laid on top of the membrane.I need it to evaporate from the interior could not accumulate in the insulation.

  • details on the vapor barrier: Vapor - a party to a heater it correctly laid

Protecting the roof from moisture
Protecting insulation from moisture penetration from the inside and outside.

The device is a warm roof
general device warm roof of metal.

particularly cold roof

The main feature of the roof is that the rays themselves are not insulated, the insulation is placed only on the lower part of the attic.It turns out the house warm and aired rays.

Protecting insulation from moisture

Besides the above mentioned membranes, thermal insulation of metal and allows the use of water-resistant film.Unlike membranes, the film should sag between the rafters about 20 mm for the condensation drain.As for warm roofs, waterproofing should be routed horizontally from the eaves to the ridge, overlapping 15 centimeters.

The device cold roof of metal
general device Cold roof of metal.

important element of the roof -

crate crates used to create bars of 50/50 mm cross section and edged boards in size 32/100 and 50/100 mm.At the bottom of the roof slope, along the eaves nailed two boards 50/100.Then, on top of the waterproofing stuffed kontrobreshetka bars 50/50 mm.The bars are nailed along the rafters, from the ridge to the bottom.On top of this kontrobreshetki incrementally, attach horizontal boards lathing.Step fixing these boards will depend on the type of metal profile which is expected to cover the roof.

Crate under the metal

Crate under the horse

The top part of the roof needs strengthening.For this we need to nail a pair of boards on each side of the ridge lath.

Crate a horse

ends of the roof

With end of the roof is necessary to beat the board more than the basic crate at the height of the metal profile.

End bracket and board

Battens under the valley

Endova - an internal junction of two roof slopes.In places where the valley makes a solid crate.

Battens under the valley

  • See material: What flagon and what its device

fencing roofing

It just has to be reliable, so the overhang is above the cornice.For a reference point, you can take the height of the load-bearing wall.Crate in these places need continuous.Therefore, between an ordinary crate add additional boards and is a solid foundation.

Crate under the roof rail

elements roofing system

design of metal roofing involves fixing of all the elements of roofing system mounted to the crate, then consider all of these elements.

Cornice strip holder for the gutter and the gutter itself

First fix special gutter holders.Then attach the trough.And only after that I fix Cornice strip.Fasten it to the sheathing screws so that the edge of the trough is not sticking out from under her.

Cornice strip and the gutter

Endova a roof of metal

Depending on the shape of the roof of the elements may be several.Valley bottom is attached to the sheathing under the roof, the upper valley (the trim) - above the roof.At the bottom of the valley docking bars do overlap at least 10 - 15 cm. Photo see above.


These components are required for a tight junction of the roof with chimneys and walls.As the valley, they are composed of the upper and lower brackets.Having apron of the lower brackets, under it fed tie designed drain water into the valley and to the outside ledge.Then the roofing is mounted on top of it and only mounted abutting the upper strap.

Aprons contiguity

Installation of metal

If the sheet metal covers the entire roof surface, the installation is carried out starting from the ridge.The first check the location of the sheet relative to the end face and the eaves (of which he must serve at 5 cm).Next, install metal roofing - even right to left (overlapping the next sheet on the previous), though left to right (with overlapping previous sheet).Every 3-connected sheet should be checked with respect to the parallel eaves.Screws screwed in the side overlap (upper point).We can not allow grasping at the same sheathing.

Installation of sheet metal

Now consider the scheme of the roof of metal, when the length of the roof more than sheets of material.First mating sheets along their length.Then align the first sheet 4 at its end.Fasten each square meter of tile screws (with EPDM seal) in the amount of 6 or 8 pieces.Sheet (lower part) is attached to the bending wave where the material adheres to the sheathing.Installation goes through a wave, the following series of screws shift staggered.

final element of roofing system

End trims

C end of the roof mounted end plate.Fasten them with screws 50 - 60 cm. In this case, the overlap between adjacent bars should be about 50 mm.

Ridge plank

These elements are flat or rounded.Last further require attachment to their end caps.It is simple and cone-shaped, fixed with pop rivets or screws.Before installing the planks under the horse put sealant (universal or curly).Straps are mounted using screws ridge.

Round and flat ridge strips

ventilation device and migratory elements

listed below additional nodes roof of metal needed for easy installation ducts, antennas and other elements.

air vent

ventilation outlets are needed in each span trusses, otherwise good ventilation will not.But if there is not warmed under the roof of the "cold triangle" enough and one output for every 60 square meters of the roof.The metal tile make a hole, and then secure the unit with screws to the edges of the hole.If there is no set release silicone sealant, it is applied in addition.

Sewage output

Sewage outlet connected with the riser.For this purpose the corrugated pipe.On the roof of the flow element for mounting cut a piece of metal.After installation of waterproofing sealant and seal the output is inserted into the sewer entrance element (which is fixed for metal screws).

Output for electric cables and antennas

to seal the docking location of antennas, cables and ducts "sandwich" with the roof covering using special so-called antenna outputs.The rubber tip of the antenna output and make the cut by 20% smaller than the diameter of the pipe and passing pull on the pipe.The antenna socket outlet is shaped profile metal and missed its silicone sealant, fasten screws for metal.

Air outlets
In the photo (left to right): 1. Out of ventilation;2. Withdrawal sewage and exhaust;3. The antenna output.

device security elements and their purpose

Stairway to go up to the roof, you need a stable ladder.It consists of wall and roof ladders with bracket.Brackets required by 4 pieces per section, they are placed in the bottom of the wave bending location where a crate solid.And brackets, and the top of the roof ladder bolted-screws.Wall ladder is set to the uppermost level was opposite edge of the eaves.This staircase wall itself must be in range of a roof.

Installation of stairs

Roof railing

These metal elements - a prerequisite for working on the roof.Attach them using the special supports to solid crate through the bottom of the wave, sealing gasket made of rubber.Photo See above.


catwalks need for safe walking on the roof of the attic window, hatch or the stairs.Securing them in the same way as the barriers, only solid lathing is not required.


snow stop

snow stop have a tubular structure made of metal, painted in black, brown, red or green.They are installed along the perimeter of the roof, above the eaves.In addition, they will be put over the entrance to the house, the windows of the attic, and on each level of a multi-tiered roof.

Snow stop

scheme roofing system Metal Profile

Below is a diagram of a roofing system Metal Company Profile.On it all the above components are connected to the whole roof.

Driving metal roofing system

drainage system

Proper device under the metal roof necessarily implies a reliable system of drainage.It consists of different elements.


to a downspout by the rules laid 10 meters of gutters, no more.This trough is sawed hole V-shape and a width of 10 centimeters - to be inserted into the outlet funnel.It must be secured at 15 centimeters from the edge of the gutter.

holders gutter

They should be put before the eaves of the roof-mounted and metal.Install brackets every 0,4 - 0,5 meters.They need to mark, to get to the slope of 5 mm per meter, and then bend polosogibom.Or you can bend already enshrined holders, mark them with a stretched cord.

Plugs for gutters

Put these elements at both ends of the trough, tight scoring them inside mallet.

outlet funnel

Its front edge is fed by an external folded edge of the gutter.Fix a funnel carved flange by bending it to the back edge of the gutter.


When it is necessary to seal between a trough or corners, be sure to overlap is between 2.5 and 3 centimeters.To do this, use special items - connectors.They have rubber gaskets and locking consisting of a rear flange and the front of the tongue.With this lock trough easily connected - at least in a row, at least at an angle.


This item is put into the hopper drainpipe, not letting go waste and autumn leaves.At least once a year, the spider should be cleaned, otherwise it will cease to perform its functions.

pipe for connection and her knee

For the transition from the funnel to a water pipe used two tribes and the connecting pipe.They saw off on the spot, to determine the necessary size.

downspout and its holders

holders are available in two types.These elements are universal - suitable for all surfaces and all materials.To attach the wall of these elements through the meter.Also required for fastening pipe joints.During installation of the pipe blanks are cut the desired length, which is inserted into the holder, firmly snapping locks.At the bottom of the downspout, departing from the blind area of ​​30 cm, fixed the knee to drain the water.

Tee drainpipe

need when two craters has one sink.Bottom Tee crimped.On the side of the funnel element is quite wide, which is very convenient.This allows you to change the angle of the input side of the pipe.

funnel to collect water

If the roof is rebated or refers to one of the most difficult species to change the gutter funnel.This funnel is inserted into a pipe clamp fastened to the ledge.It is made from a metal strip and connecting screws.

limiter to prevent overflowing

need him there, where the water flows constantly, and sometimes in large amounts (under the valleys, for example).Put it on the corner of the trough or trough.

Here, perhaps, and listed all the main elements, which provides technology devices roof of metal.And if they are all properly set, it will come strong, beautiful and waterproof roof.

Drain systems

Video instructions for installation of metal roofing, "Metall Profil"

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