Metal gutters - traditional water drainage systems to protect the roofs of low-rise buildings. These simple designs have shown reliable, efficient operation over the centuries. Modern options, as a rule, are constructed from finished components of industrial production.
Meanwhile, in the old days, the installation of metal gutters for the roof with their own hands was considered commonplace. Moreover, the entire system, from brackets to pipes, was made in a makeshift (manual) way.
In this material we will talk about how to build and install a metal drain for the roof.
Gutter Technologies
If we turn to existing technologies for the construction of metal drainage systems, two options are relevant for use:
- Based on round gutters and water pipes.
- Based on rectangular gutters and downspouts.
Of course, there is also a different (exclusive) technique, for example, based on wood, but this is rare and does not find wide application.
The metal drainage system attracts not only with its beautiful appearance. According to operational parameters, metal gutters occupy a leading position
Regardless of the technology of gutters, the system is always calculated taking into account the roof area. According to the calculated data, the throughput of gutters, funnels, drainpipes is selected.
Based on the parameters of the throughput, the diameters, through holes, overall dimensions of the fittings are determined:
- corner transitions;
- sleeve couplings;
- prefabricated funnels;
- bypass bends;
- connectors;
- drain pipes.
Provided that the assembly is completely independent, the master will have to make all the fittings of the working kit with his own hands. But if there are no tinsmith skills and production desires, the entire marked set of parts can simply be bought. Naturally, in this case, the complete independence of the manufacturing system is already seen as doubtful.
Which metal is preferable?
The choice of material for the metal gutter system is relatively small: galvanized steel, copper, zinc alloy with titanium. The first material is economical and the most popular of the whole group, but, from the point of view of durability, it is not suitable in any assortment.
For example, the thickness of the zinc coating of a metal sheet of class 2 is 5-10 microns. This protection will last no more than 10 years of operation.
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Galvanized Steel Gutter System
Metal gutters
Galvanized gutter with polymer coating
A completely different matter is galvanized steel with polymer coating. This material in terms of durability is not inferior to red copper. But to make parts of such sheets on their own without damage to the polymer layer is problematic.
Again, it remains only to buy finished products or choose a copper sheet as the material. And metal gutters made of copper, and even more so zinc-titanium, require substantial capital investments.
Homemade metal gutters
Making a gutter with your own hands from galvanized steel is simple. However, difficulties arise if you try to make a gutter of the same length as in factory production (3-4 meters).
For the manufacture of a four-meter part, appropriate technical equipment will be required, which is usually not available at home. Therefore, the standard length of makeshift gutters, as a rule, is no more than 1 meter.
An illustrative example of the manufacture of the simplest gutter of a private house from galvanized steel sheet and steel brackets-holders. DIY system
Oval Trench Production Technology:
- Take a sheet of tin 1 m long, 0.5 m wide.
- Place a piece of sheet on the bench.
- Take a metal pipe of suitable diameter.
- A section of the sheet on the pipe is bent by editing with a wooden hammer to a semicircle.
- An indent of 10 mm is measured along the leading long edge.
- Curve the edge line at an angle of 90º.
Then perform a second bend at the trailing edge, cutting off the excess sheet.
For independent production of tin drains, you need a long wide bench table and a set of simple tools. Tinsmith skills are welcome
Approximately in the same way they make gutters of a rectangular shape. Only as an edit use an angular metal disc.
Scheme of manufacturing a rectangular gutter for a drainage system for independent practice. An example of a home-made product
Rectangular gutters are even easier to make, as well as preparing shaped parts for them. Therefore, it makes sense when choosing a technology to stop precisely on rectangular gutters.
Homemade drainpipes made of tin
To make a straight branch pipe of a drain from tin, measure a piece of galvanization in length and width and cut with scissors along the marked lines.
Using a file, the edges are thoroughly cleaned from burrs and treated to a smooth state. On the long side, both edges of the sheet are bent in one direction to a width of 10-15 mm.
The sequence of work in the process of creating a direct branch pipe of the drainage system of galvanized steel (copper) with your own hands. The main tool is a tinsmith's wooden hammer
On a rigidly fixed pipe of a suitable diameter, a galvanized sheet is tapped until it is round. Then impose previously bent edges one on top of the other.
Using a wooden mallet and a metal rectangular bar, “wrap” the edges in the castle. Thoroughly tap with a hammer along the seam until a securely pressed joint is obtained. Align the shape of the product on the blank pipe, trying to get a cylinder close to the perfect circle.
An example of the manufacture of a direct branch pipe of a drain from galvanized metal sheet. Editing for a round shape is carried out using a conventional metal pipe of suitable diameter
Having the skills to manufacture direct downpipes from galvanizing, it is easy to master the production technology of receiving funnels and other parts of the system. With the same success, self-taught masters make brackets for metal gutters and for fixing drainpipes.
Here, the production technique is very simple. To do this, you will need a bench vise, a hammer, a file, a drill, a tape measure, a pencil and a strip of mild steel with a section of 20x1.5 mm.
So do the brackets for metal gutter systems with your own hands. For round gutters and pipes, a thickness of a metal strip of 1.5 mm is sufficient. Under square gutters 3-4 mm
Manufacturing technology of steel (copper) bracket:
- Cut a piece of steel strip 300 mm long.
- File end parts.
- Step away from either end of 10 mm, bend at 90º.
- By sequentially moving the strip and fixing it in a vice, bend it with an arc to the size of the radius of the gutter.
- On the remaining straight part of the strip, drill holes for the retainer and fasteners.
Brackets for downpipes are made in the same way, but already in the form of a clamp, consisting of two oval-shaped strips, the curved end edges of which are supplemented by bolt holes for the screed.
On our site there are several articles with detailed instructions for the manufacture of roof gutters, we recommend that you read:
- DIY roof gutters: instructions for self-manufacturing a drainage system
- How to make spillways for the roof: do-it-yourself recommendations for installing a drainage system
Technology for installing gutter parts
Let's consider in more detail how to install parts of various shapes made by yourself. Each technology has its own characteristics.
Detailed photo briefing
The following selection of photos will familiarize you with the standard procedure for installing a gutter system on a pitched roof:
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Step 1: Trying on the front-mount bracket
Step 2: Installing the windshield and another fitting
Step 3: Install the extreme bracket in the highest position
Step 4: Check the slope when installing the brackets
Step 5: Marking and installing the gutter holders
Step 6: Verifying the holder fastening
Step 7: Installing the Metal Gutter to the Brackets
Step 8: Installing the plugs on the edges of the gutter
Installing a gutter is only part of the installation of a gutter system. Now you need to collect and fix the drainage funnel, connect a gutter riser to it and organize a container for receiving rainwater. Next, proceed as follows:
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From the edge of the installed gutter, measure out the segment that needs to be increased for the full arrangement of the slope
According to the marking, we cut a metal gutter using a metal sheet
Using sandpaper, gently clean the edge of the cut chute, remove burrs, being careful not to damage the polymer shell of metal parts
Remove from the brackets the previously installed part of the gutter. We connect it to the newly cut, using a connector with a compensator
In the place marked for the installation of the funnel, we cut a hole through which water from the gutter will enter the funnel and then into the gutter
Having installed the gutter back, we click the gutter funnel under the slotted hole
We collect the gutter riser using the knees and bends available in the configuration of the system. To collect rainwater, put a container
In the tank for collecting rainwater, it can be drained through a groove cut into a drainpipe or through a hose. The second option is better protected from atmospheric dust and dirt.
Step 9: Determining the length of the missing section of the gutter
Step 10: Cutting the gutter blanks
Step 11: Sanding Burrs
Step 12: Joining the two parts of the gutter
Step 13: Open the holes for installing the funnel
Step 14: Locking the Gutter Funnel
Step 15: Assembling the Gutter
Step 16: Connect the hose to the catchment
Self-assembly of oval gutters
The process of assembling do-it-yourself oval gutters begin as usual with the installation of the bracket-holders. It is worth noting an important nuance. If galvanized material is chosen for the gutter, steel brackets can be installed under it. Traditionally, do-it-yourself brackets with a shank (long) are used.
An example of attaching gutter brackets to the roof of a building. Usually, fasteners are made on the rafters, but in some cases it is allowed to mount on the battens
It is highly discouraged to place steel holders under copper parts, just as aluminum and plastic are undesirable. Copper always requires only copper in pair, and a departure from these principles is at a loss. The costs, of course, are substantial, but they pay off with the longevity of a purely copper construction.
The same principle should be noted in relation to the zinc-titanium system. Do not save on fasteners, preferring expensive gutter structures.
Reception of installing a long bracket
The shank of the first bracket is superimposed on the end part of the extreme rafters and secured with screws. Before fixing, it is necessary to push the bracket forward so far that the conditional vertical line running along the edge of the roof covering intersects the groove at the center point of its bottom.
Compliance with this rule is the key to the correct collection and removal of water for the maximum possible calculated value of precipitation intensity. Another important point is that the level of the front upper edge of the bracket rim should be 25-30 mm below the level of the ramp line.
The subtleties of installing brackets for all types of technologies are to adjust the position of the brackets in such a way that unimpeded flow of snow from the roof and complete capture of the draining water by the gutter are possible
The average size of the length between the rafters of the roofs of private houses is 800 mm. Given the high degree of rigidity of metal gutters (compared to plastic), it is permissible to place brackets with a frequency of up to 1 meter. That is, subsequent brackets are also fixed directly to the rafters.
If the building structure does not allow to observe the indicated frequency, it should be fixed to the surface of the outer boards of the crate.
The installed brackets bring to the required level of slope, slightly bending or bending the rim of each. For marking to the required slope, a cord is drawn between the first and last fastening element, setting the desired slope values according to the construction level.
Having completed the fitting in all respects, they are laid on the brackets of the gutter, abutting them with the edges under the clamps. Next, it will remain to assemble prefabricated funnels and downspouts, after which the system is ready for operation.
How to install a rectangular gutter?
From a technical point of view, there are no special differences between the installation of rectangular and oval gutters. The technology and installation requirements are similar. But there are still some nuances.
Laying of rectangular grooves on the bracket-holders begins in the direction from the receiving funnel to the first bracket. The elements are overlapped one by one, the joints are coated with sealant and then fastened with rivets. The shape of the support brackets is, of course, rectangular.
An example of the connection of two rectangular gutters on the installation of a drainage system assembled from rectangular parts. Unlike designs with round gutters, riveting technology is traditionally used here
The technique of fitting molded parts onto rivets through a sealant is used during the entire installation process. True, the installation of receiving funnels is often performed using self-tapping screws.
Act as follows:
- A rectangle of 80 x 60 mm is drawn on the outer lower side of the bottom, at a distance of 100-150 mm from the edge of the gutter.
- Two cuts are made along the diagonals of the rectangle from corner to corner.
- The resulting petals are bent downward at an angle of 90º.
- Sealant is applied to the funnel flange.
- A funnel body is attached to the hole and fixed with self-tapping screws.
Rectangular water pipes are mounted from the funnel from top to bottom. The connection of the nozzles is done by inserting one into the other.
At the same time, at the inlet pipe, the corners along the end edge are crushed inside, inserted into another pipe, and then fasten both parts along the contact line with rivets.
A common mounting scheme for the receiving funnel on rectangular gutters. A waterproof sealant is used to seal the joint.
Fastening the assembled drainpipes to the wall of the building is carried out in a standard way - with clamps.
Manufacturers of drainage systems care about the correct installation of their products, therefore, they are increasingly releasing videos to help understand all the nuances of the installation:
If we compare the installation technology of gutters (round and rectangular), the arrangement of rectangular systems looks more complicated. Some details differ in size and configuration. For example, the thickness of the strip of brackets for a rectangular trough is usually taken no less than 3-4 mm.
However, from an operational point of view, rectangular systems are more preferable.With a savings of 10-15% relative to the installation of round gutters, they provide greater throughput.
Do you have personal experience installing metal roof gutters? Want to share your experience or ask a question about the topic of the article? Please leave comments in the block below.