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Flat roof, gable roof and Co – What makes sense?

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There are many different roof shapes that you can choose best pond aerator when planning your own home. Although certain roof shapes are often specified in the development plan (to ensure that the house adapts to the neighboring buildings), there are often also the possibilities to freely choose the roof shape. The two most common roof forms in this country are certainly the gable roof and the flat roof.

The gable roof

A gable roof, also referred to as a gable roof in some regions, consists of two inclined, opposite roof surfaces. At the highest point, the ridge of the roof, these two surfaces converge. The gable roof rests on the building and closes with the ridge parallel to the gables, or in most cases protrudes beyond the gables. The construction is designed as a so-called purlin roof or rafter roof. Thus, a variety of very different roof pitches and eaves heights can be achieved.

The simple construction principle of the gable roof has many advantages. The classic gable roof shape has proven itself over many centuries. It is by far the most frequently seen roof shape in German-speaking countries. One of the reasons for this is certainly the rather simple construction of the roof truss, which offers several important advantages. Complicated design details are not necessary in this way. As a result, a gable roof does not have damage so easily and has to be repaired less often, but also that it is quite cheap to erect right from the start.

The roof slope of the gable roof is usually determined by the region in which one builds. Different regions have different traditions here. In very windy regions, the roof pitches of the saddle roofs are usually very steep. The rainwater is drained faster and there is far less attack surface on the roof.

In regions with a lot of snow, however, the roofs are built rather flatter. The aim is to prevent the snow from slipping uncontrollably from the roofs and causing damage. In snowy regions, snow plays a greater role than wind.

Most saddle roofs in Germany have an inclination between 35 and 45 degrees. Roofs with this slope offer the possibility of using the attic as a living space. With larger roofs, this becomes difficult.

There are different typologies of the gable roof that deviate from the norm: the “flat gable roof” has a slope of no more than 30 degrees. The “angle roof”, on the other hand, has more than 45 degrees. There are even saddle roofs with more than 60 degrees. These are called “Gothic roofs”. Such extreme roof pitches only make sense regionally, if the weather and also the tradition in the construction method require it. An inclination of about 40 degrees is the rule and certainly the best choice if you opt for the gable roof.

The flat roof

The flat roof sometimes has a bad reputation. In the middle of the last century, it was very fashionable and was often used for residential bungalows. Due to the state of the art, however, the flat roofs were often leaking at that time. Today, the flat roof is popular again, as the technology has changed a lot. Flat roofs stand for contemporary and modern buildings and they offer many design possibilities.

A flat roof is a roof with a maximum inclination of 7 degrees. However, even a flat roof is never completely flat, because here too the water drainage must be ensured. At an inclination of about 4 degrees, however, the inclination is not recognizable, as the flat roofs are usually also covered with a layer of gravel or other materials.

Nowadays, flat roofs are also often extensively greened. With good waterproofing of the roof, plants can grow on the roof itself, which greatly improves the appearance of the roof.

The most important thing about a flat roof is the professional design and professional waterproofing of the roof. Therefore, a flat roof is also quite expensive. A poorly designed flat roof causes constant problems and additional costs. It is crucial that the collecting water can drain off well. Stagnant water causes long-term damage.

If you try to save on the seal, it may rain after a few years. As a rule, the flat roof is sealed for everything with bitumen welding webs. best and strongest pond pumps Special plastic roofing membranes can also be used. Rubber or plastic sealing membranes made of PVC are considered to be particularly robust.

Flat roofs basically have two major advantages: You can use your flat roof as a terrace or as a roof garden. In addition, the living room under the flat roof has no slopes. This leaves plenty of space for storage space in the attic. In addition, with a flat roof, you do not have to install special windows. Light domes in the flat roof provide more light. However, these are also susceptible to problems again.

other roof shapes

In addition to flat roof and gable roof, there are still some special shapes. The pitched roof, for example, is like a gable roof in which one side is missing. It has similar characteristics to a gable roof and can allow generous exposure from one side.

A trench roof is like an inverted gable roof where the center is the lowest point. There are actually only design reasons for this roof.The hipped roof is also worth mentioning, as it is also often found in Germany. In the case of a hipped roof, all four sides of the building have a pitched roof. In some regions, this roof shape is very common.


The classic gable roof is probably the safest choice for you. You do not take any risks and in addition, the roof is quite cheap. But if you would like to have a flat roof for design reasons, then you should invest enough in this roof. A professionally designed flat roof is also a good and safe roof, costs only a little more.


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