Roofing: All you need to know about roof installation


Roof installation is the most important part so your roof can last a lifetime. Roofs are structures that consist of sloping impassable levels so that it is possible to quickly remove rainwater and especially snow and to reduce the risk of water, or even moisture, passing through the buildings.

Sometimes, above their roofs or domes, they overlap buildings by constructing roofs.

This is done either for architectural reasons or for more complete protection from atmospheric influences.

By roof we do not mean only the load-bearing structures of the sloping roofs of buildings, but also their watertight coatings, which may consist of tiles, slabs, metal sheets or other materials.

Roof shapes and names

Roofs may consist of one or more ramps to the vertical sides of buildings.

Often the sloping levels protrude from the outer vertical surface of the perimeter walls and form the so-called crowns (frames), so that rainwater flows to the ground, away from the walls of buildings.

The levels, which form the roof, are arranged in different ways, but mainly depending on the shape of the floor plan of the building.


Before the construction of a roof it is necessary to design it and determine the shape of the levels, which constitute it.

Then the relative heights of the roof tops are determined, which depend on the slope of the intersecting levels.

It adapts to the climatic conditions of the place but also to the materials used.

Mounting device and mounting of wooden trusses

On the roofs, the load-bearing structure consists of trusses, ie mesh beams with a suitable shape, which are placed in parallel and form a grate.

On the main grate, ie on the sloping sides of the trusses, are placed simple wooden beams, which sometimes with other perpendiculars to the previous ones form a grate with smaller openings.

Sometimes this is also done with a plank, a surface on which the waterproof coating is based or fixed.

Where ridge lines or groove lines are formed (gutters), the basic trusses of the roof are combined with semi-mixed or false-jointed or replaced by them.

Roof installation process

The purpose of the wood, which is placed on the roofs and is called windbreaks, is to ensure the trusses from overturning due to wind pressure as well as the stabilization and connection of the entire roof construction.

Of course, the rafters that connect the couplings also contribute to the prevention of the overthrow.

Our windbreaks also serve to temporarily hold the trusses during the roof construction stage, as the trusses are usually made on the ground and then raised and placed in place.

Windbreaks are wood with a cross section of 7×7 or 9×9 cm, which are nailed to the inside of the truss scissors in the opposite direction to the sloping sides of the roof (especially when the trusses do not have a middle upright).

When the trusses have vertical bars, ie they have uprights, often, instead of windbreaks, boards are placed, which are nailed crosswise with one end attached to the upper part of the upright of one truss and with the other to the lower part of the upright of the side truss .

Of course the roof is better secured when both of the above windbreaks are installed.

Beams are called the wooden beams fixed perpendicular to the plane of the trusses on their inclined sides.

Skylights are called wooden beams that fit vertically on the rafters.

The plank on the rafters, which is the bearing surface or adjustment of the roof covering. is called petrification.

The purpose of the rafters, the rafters and the curtain is to bridge the openings between the pairs and to create a grate or surface, on which the coating will be fixed.

The planking on ordinary roofs consists of arcane thin planks, which are placed with a small gap between them for material economy.

On roofs with their interior visible from below, the planking is often made with planks that are connected to each other by a step.

When a chimney penetrates the roof, then either the chimney passes through two of its trusses or if it is greater than the distance between two trusses, a truss is interrupted and it rests on a crossbeam.

Roof insulation

The modern requirement for thermal insulation of the roof, must be addressed with materials that have the correct thermal behavior and can be easily combined with building materials and building techniques.

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