Sloping roofs of profiled sheet - how to choose the right one?

roof to reliably protect the house and lasts as long as possible, when it is necessary to consider the construction of which angle in relation to the house, it will be built.Great influence while providing climate, wind rose, abundant precipitation to the populated area where the house is being built.But it is also of no small importance is the material that will serve as a roof.

How to calculate the angle of inclination of the roof, if profiling sheets (trapezoidal sheet or corrugated board) are selected as a roofing material?

First of all, it should be noted that the roof Roof Decking perfect if the length of slope is less than 12 meters.It is important when installing on a roof of corrugated board to comply with all the requirements of SNIP, where it is recommended to use the wall, universal trapezoidal sheet and profiled sheet overlaps with a wave height greater than 20 mm.When choosing a trapezoidal sheet is necessary to observe compliance with its polymer coating climate peculiarities.

bias Recommendations SNIP

already made it a rule to measure the angle of the roof inclination in degrees or percentages:

One degree equals 1.7 per cent, and 45 degrees - 100 percent.

The higher the angle of inclination of the roof, the less it will pressure the snow in winter, and soon will be given water in the summer.However, significantly increases the effect of the wind rose (in other words - sailing roof).If the roof pitch is small, the effect of wind will decrease, but correspondingly increase the load on the roof of the precipitation, and therefore need to consider providing reliable sealing and waterproof roofing material.

Depending on the climatic conditions in which to build a house, take into account the angle of inclination.Where receive higher rainfall, it is best to make the roof at an angle of 45 degrees to rain or snow did not stay on the roof.If the area is dominated by dry and warm days, then the angle should be minimized (in the case of floorings 8 - 10 degrees).The same roof pitch will be appropriate in those places where you may experience gale.

For each material has its own recommendations to the roof slope.

For a material such as steel sheet, SNP recommended degrees to 20 degrees slope (36.4 percent).This is the perfect slope for trapezoidal sheet.But roofs on the houses are made different and not always the angle of inclination of 20 degrees.Because there is a minimum allowable value for a roof inclination of each material selected for roofing including profiling sheets.

minimum degree roof slope angle of the sheeting for industrial or commercial buildings are 8 degrees (14.1 degrees), for residential buildings - 10 degrees (17.6 percent).If the roof is stowed in multiple layers (e.g., two), then these numbers would increase, that is, the angle of the slope must be increased to prevent the accumulation of moisture at the juncture of corrugated board.

The smaller the angle of the slope, the greater the need to make the sheets overlap, due to which decreases the effective area of ​​the material.For example, at an inclination of 35 c.overlap should be equal to 15 cm, 15 to 30 grams.- 20 cm, less than 15 degrees are the two waves overlap profiling sheet, and the joints (longitudinal and transverse) amenable to treatment sealed.

calculations on the calculation of the angle of inclination

To perform calculations on the calculation of the angle at which the roof is tilted, often used inclinometer - specially designed for this device.But it is possible to carry out the calculations on their own, armed with knowledge of trigonometry.

Here the formula of a right triangle is useful.Catete will represent the gap between the ridge and the gap between the ceiling and cornice ceilings slope and the center.Hypotenuse - a slant roof, measured in a straight line.Learning these distances and applying them trigonometric function, it is possible to easily calculate the smallest value of roof pitch.

tilt angle by dividing the height of the ridge on the length of the bevel get sine of the angle of the roof.Using calculations on a calculator, is determined by its value in degrees (percentage).If you prefer to use a function of the cosine or tangent, the relevant ½ slab width and length or height of the bevel roof ridge and ½ slab width.

Note

1. to any material used as a roof it is important that it does not linger remnants of moisture from precipitation.Therefore, we must correctly install the drainage system.Even at the planning stage it is necessary to provide the desired slope of the roof to the gutter was sent to the funnels, receiving water (when water collection system internal) or in the direction of special zhelobochkov (when the water collection system external).
2. This is particularly important in the case where the size of the roof pitch has the smallest permissible value..
3. If the angle of slope of the roof is less than 10 grams, roofing membrane must be - it will prevent the material used as a roof from moisture, and therefore the material is not spoiled.
   

   Creating ventilation roof

4. The smaller the value of roof pitch, the greater the need to make the gap, providing ventilation.Experts recommend doing it at least 50 mm.
5. Stacking trapezoidal sheet roof with the smallest angle of inclination, it is important to observe the correct size of the overlap and fixing steps.If you follow all the rules laying material, the roof sheeting will last a long time and provide reliable protection structure.If you do not have confidence in their abilities, it is better to entrust this work to professionals.