The roof of the bath with his own hands

18-04-2018

Useful

In this article, we will describe how to build a roof for a bath, consider various options: monopitch, gable, roofing frame construction, as well as demonstrate the schemes, photos and video instructions.

Shed roof is most often mounted for a bath, which is used only in summer. In this case, the roof can be used as a place for fire. It can also decompose various fruits, vegetables or mushrooms to dry them. And the water tank installed on the roof, which has a small slope, can be used for a summer shower, the water in such a tank will be sufficiently heated on hot days.

On a shed roof, you can use turf laid in two layers as a roofing material: the bottom of which is laid up and the second down. Caring for such a coating is similar to the care of a conventional lawn. Such “green roofs” are quite popular in Europe, but they are not widely spread in our country, although they were used everywhere in ancient Russia.

Basically, the roofs of the baths are built duplex with the attic device. In the attic it is good to dry bath brooms, to store household equipment, and in rainy weather this is a great place to dry clothes. The attic also provides additional thermal insulation for the building.

Single pitch roof

During the construction of the bath, many decide to build a shed roof. Unlike other types, it is much easier to make a single-sided one. So, for its arrangement there is no need to build a complex truss system. And if the bath is attached to another structure, then such a roof will be a continuation of the existing one. But despite the apparent simplicity in its manufacture, it is important to take into account a number of nuances, such as bias.

The angle of the roof slope is determined based on several factors, for example, how big the snow and wind load is in your area. Also on the definition of the angle affects the selected roofing material. If in your region the amount of snow is large, then the angle of inclination should be made steeper from 15 °. This will allow the snow to quickly descend from the surface, and also simplify its cleaning. If strong winds prevail in your region, then the roof, on the contrary, needs to be made more gentle.

Below is a chart that indicates the permissible angle of inclination of the roof with a particular roofing material:

Roof structure

The construction itself is very simple. The angle of inclination is created by the difference in height of two opposite walls. At the same time, it is also possible to equip an attic room (optional). If the attic is not, then the roof at the same time may be the ceiling of the bath. Inside it will need to be insulated and hemmed. If the attic will be equipped, then it is necessary to additionally make the overlap between the attic and the room.

The roof has a support on the rafters, which are placed on the walls of the bath. The rafters are mounted in steps from 0.6 m to 1.2 m. From above the rafters, the sheathing, waterproofing layer and roofing material are made.

If the length of the slope exceeds 4 m, then under the rafters be sure to install additional support.

As the roofing can be used decking, metal, shingles, ondulin. It is extremely rare to choose slate, since this material significantly weights the weight of the finished lean-to roof.

For the manufacture of such a roof, you must have the following set of materials and tools:

board 40 × 60 mm for the manufacture of rafters and floor beams;
moisture resistant plywood or board for the manufacture of crates;
waterproofing material;
roofing;
ceiling board;
film for vapor barrier with metallic coating;
insulation - basalt, glass or mineral wool;
jigsaw;
stapler;
hammer;
roulette;
knife;
screwdriver;
antiseptic to cover the tree.

Step-by-step instruction

The formation of a shed roof begins with the construction of walls, i.e. perform one higher. If the bath is rectangular, then usually it is one of the long walls. Further, the construction process is as follows (for example, the construction of timber):

If you plan to perform an attic, then at the low wall level it is necessary to make grooves along the entire perimeter for the ceiling beams. The distance may correspond to the distance between the rafters. The groove is carefully treated with wood preservative.
Further, according to size, cut out the beams of the ceiling from a thick edged board.
The ends of the beams will fit into the grooves made. To do this, they must be impregnated with polymer waterproofing mastic and wrapped in roofing material.
Fastening is done with metal brackets or studs to the wall.
On the upper beam stacked rafters (mauerlat). To pull them you can use metal plates or studs. If the length of the slope between the ceiling beams and rafters exceeds 4 m, then additionally install struts or supports.

The gable roof can be sewn up with boards.
If the attic is settling down, then a ventilation window is made in the gable. Otherwise, steam will accumulate under the roof, leading to condensation.
Across the rafters from above you lay a waterproofing film. It should sag a little. You fix bars to the rafters from above, and then, plywood, for a continuous crate or board with a step of 0.5 m.
After that installation of the roofing material chosen by you is carried out. If it is a metal tile or corrugated flooring, they should be overlapped on one wave. For mounting, special screws with sealing rubber are used.
After installation of the roofing material, it is necessary to fix the wind, eaves bar and ridge.

The final stage will be warming. About the intricacies of doing this work, will be discussed in this article.

Roof frame bath

If you are building a frame bath, then in the manufacture of the roof there are also some nuances that are important to consider. It is worth noting that with such construction it is best to build a gable construction with a slope of 20–23 °. This will allow precipitation not to linger on the roof, but to go quickly. So, the truss system of a frame bath roof will be supported on the walls. Rafters are made of board 150 × 40 mm. At the top, the rafters will rest on the ridge bar, and at the bottom on the wall frame. The crate is made of board 150 × 25 mm with a pitch of 300 mm.

Immediately prior to the installation of the roofing material, a heat insulating layer is laid, as well as a hygroscopic PVC waterproofing film. On top of it, rails are nailed to form an air gap. The pitch of the wooden batten is selected depending on the selected roofing material. For example, for metal tile, the batten step can be 200–350 mm.

If the roof area will exceed 60 m²then it is important to make additional ventilation ducts. Otherwise, condensation may form in the attic.

For the construction of the roof frame of the bath, it is best to make a truss structure on the ground on a flat surface. After that, it will need to be lifted onto the ends of the walls and secured.

Warming

The roof of the bath should have good steam and thermal insulation properties. For insulation, you can use:

glass wool;
extruded polystyrene foam;
mineral wool.

All these materials are distinguished by ease of installation, strength, moisture resistance, durability. One of the best options is extruded polystyrene foam, as it does not absorb moisture. It is not recommended to choose foam plastic when insulating the roof of a bath, as it emits harmful substances under the influence of high temperatures.

For example, consider the principle of thermal insulation of the roof with mineral wool. It is advisable to lay the wool in two layers in a staggered manner (in the event that the wool is slab, if rolled, then the second layer is across the first) - thus, you completely prevent the formation of a cold bridge. For warming use cotton wool 10 cm thick.

If the insulation of the roof is made in the already built bath, then all work will be done from inside the roof in the attic. And the sequence of its installation remains the same, using steam and waterproofing.

Insulation fits between the rafters close, so that there are no gaps and cracks. Upon termination of warming from above a heater the film with overlaps keeps within. When laying several layers of insulation material, each subsequent layer should be positioned so that it overlaps the junction of the previous one. The same principle is used to warm the ceiling in the bath.

When the roof is fully built, you will receive a complete aesthetic pleasure from the work done.

Video

You can familiarize yourself with typical mistakes when building a bathhouse roof in the following video: