Draft attic with a gable broken roof

A draft attic with a broken gable roof is a distinctive architectural element that combines aesthetic appeal and functionality. This type of roof blends parts of a broken or half-hipped roof, which has a combination of gable and hip roof characteristics, and a gable roof, which is distinguished by its triangular shape. The end effect is a roofline that gives a house functional advantages in terms of space and structural integrity in addition to improving its aesthetic appeal.

An asymmetrical profile is one of the characteristics that sets apart a draft attic with a broken gable roof. This type of roof normally has one side with a steep gable slope and the other with a shallower, hipped slope, in contrast to traditional gable roofs that slope down on two sides. This asymmetry accommodates different building heights and configurations while also adding visual interest and greater design flexibility.

Practically speaking, there is more room in the attic area with the draft attic configuration. Compared to a typical gable roof, the steeper gable side frequently provides greater headroom and usable storage or living space. This can be especially helpful for homeowners who want to keep their attic as functional as possible while still keeping it visually appealing from the outside.

When it comes to structural stability, a broken roof design that combines hip and gable elements provides better resistance to wind and weather. There is less chance of uplift during storms thanks to the hipped section of the roof, which helps to more evenly distribute wind forces. Homeowners in areas where bad weather is common can feel more at ease knowing that their roof will last longer thanks to its structural resilience.

"The draft attic is essential for maintaining appropriate ventilation and temperature control in homes with gable-style roofs. The efficient channeling of airflow through this distinctive attic configuration enhances indoor comfort and energy efficiency. Optimizing this area can result in improved insulation and lower energy expenses, making it a sensible option for homeowners seeking to improve the performance of their roof." Does this fulfill your search criteria?

Projects of houses with a broken attic roof – select the best solution

The presentation of his image is the first step towards realizing the dream of owning a country home. I truly want the building to be spacious, lovely, cozy, and comfortable all at once. Unfortunately, the project of building a large, multi-room house cannot be implemented due to the land’s frequently restricted territory. However, this is not a problem because adding an attic or building another floor can always increase the number of residential premises. Houses with broken roofs are a popular project because of these practical considerations.

Broken roof – is it worth doing

Divergent views exist regarding how complex the attic roof’s design is. Some people think that the process of designing and building these kinds of works is extremely difficult. On the other hand, it is more common to hear the belief that everything is possible if engineering and construction problems are handled skillfully.

If you figure it out, the damaged roof is significantly bigger than with a straightforward gable option. Now that we have made the decision to add an attic structure to complete the house’s construction, we can discuss the following advantages with confidence:

  1. Another floor with living rooms will appear in the house;
  2. The roof will practically not be subjected to snow load in the winter;
  3. The creative approach will allow you to realize ideas with a terrace and a balcony, which will give the building a certain charm;
  4. The installation of a broken roof takes place in stages, and part of the work can be carried out on Earth.
  5. There are practically no restrictions when choosing roofing materials.

Thus, it makes sense to build the house with a broken roof during construction, and this justifies taking a little longer than expected.

Feature of the design and materials

Thus, the attic and extra floor are provided by the house’s design. This implies that the project ought to include a broken roof, as well as calculations and drawings of all the subtleties and details. While everyone sets their own guidelines when building a structure, there are a few suggestions you should pay attention to:

  1. The width of the building should not be more than 6 meters.
  2. The roof having a break must have an angles of inclination of 60 and 30 degrees.
  3. The ceiling in the attic room will have a height of about 2.5 meters if the breakup is at a height of 3.1 meters.

Crucial! A wider house will require more attic space, which will be used more efficiently, and a narrower house will require more complicated installation and calculation procedures.

It’s not always possible to get an even rectangle when taking into account the structural features and drawing of a newly broken attic roof. This is not frightening, but it is best to go back to a flat geometric form when building a rafter system. Later on, when constructing the upper slopes, it will be feasible to use a single rafter template.

High-quality "roofing pie," a substantial rafter structure, and the use of premium materials are all implied in the construction of a broken roof. This is one instance where using the modular installation scheme frees you from using construction equipment to complete the entire job.

Wood is typically used for the rafter system of a broken roof. When selecting a timber, you should be mindful of its qualities to avoid making a mistake:

  • The moisture of the tree should not be more acceptable for construction and installation work;
  • The number of defects is minimal;
  • Wood breed – coniferous.

Moreover, the construction of a broken roof will call for:

  • Oblast board – for the crate;
  • Plywood – for connecting rafters;
  • Metal brackets, brackets, screws, studs, nails for fasteners;
  • Waterproofing and insulation – for the formation of a "roof pie";
  • Roofing material;
  • Carpentry and carpentry tools.

Installation work: Stages and main accents

The construction of a broken roof is done according to a specific algorithm to ensure that everything is done qualitatively and the owner is satisfied with the final result. The operations will occur in the following order if we take into account their order in sequence.

  1. Production and installation of the rafter system. It is necessary, adhering to a specially created template, to make all structural elements. Next, the Mauerlat is installed and the first and second rafting system is installed. The design is completed by the ridge beam, which will be responsible for a high -quality connection of all parts into a single whole.

A broken roof is the result of careful, labor-intensive work requiring a good deal of knowledge. It is advised to entrust all stages to qualified builders in order to ensure that the entire list of work is completed to a high standard. In addition to being a superb example of engineering and design, the attic roof is a component of the building that contributes to the overall comfort of the space. For this reason, it is crucial that all work be done professionally rather than haphazardly.

Using pre-made plans and blueprints of homes featuring an attic roof, you can design a cozy and useful structure. The most important thing is to choose at the outset

How to build an attic roof – step -by -step guide

The design of an attic that maximizes the use of a private home’s floor area is fairly intricate. Typically, homeowners leave the construction to skilled artisans known as roofers. However, if you work as a dock in Plotnitsky’s company and don’t mind a challenge, you can probably handle the assignment on your own. Getting theoretical knowledge about how the attic roof is calculated and constructed by hand using specific drawings is the first step. This article contains the information presented in the form of step-by-step instructions.

The choice of roof design

The following roof types (indicated in the diagram below) are appropriate for the attic’s layout.

  • ordinary gable with a slope of 45 ° and more (steep);
  • broken roof;
  • Four -sided half -wool.

Note: It is unnecessary to take into account different half-wool coatings separately because, as the scheme illustrates, they are intricate gable roofs. The multi-screw structure in the picture is interesting in terms of design, but building it requires some experience.

The gable attic roof is the easiest to install and uses the least amount of materials. However, you will have to make do with a smaller usable area and the attached floor’s slanted walls, which prevent you from setting up tall furniture. If the attic bedroom is equipped, this won’t be an issue because the beds will rest comfortably close to the longitudinal walls. Raising the rafter system to the necessary height, as indicated in the drawing below, is an additional solution to the problem.

The most common type of roof is one with broken forms because it lets you create fully functional living rooms at the top. According to installation technology, a roof with protruding windows is not much more complicated than a gable, even though it will require more building materials because of the increased material consumption. To make your decision easier, we suggest weighing and contrasting the three most popular choices for the attic of a private home with typical dimensions of 6 by 6 meters:

  1. Cool roof with two slopes inclined at an angle of 45 °.
  2. A broken structure where the lower rafters are tilted at an angle of 60 °, and the upper – 30 °.
  3. The same as option 1, only the farms are raised to a height of 60 cm, and the rafters stand at an angle of 37.5 °.

We depicted all three structures in a single drawing for convenience, which can serve as a model for upcoming building projects.

Note: A board measuring 50 x 150 mm in cross section is used as the primary building material for rafters and other frame components.

We recommend examining the comparative table, which displays the attic room parameters at a rate of one linear meter for the length of the building, in order to select the best option among the three.

You can roughly calculate the amount of building materials needed for the frame, coating, and insulation by knowing the length of the roofing slopes shown on the plate. When selling all three solutions in private homes of varying sizes, the total area of the second floor rooms can be assessed using the following table.

Calculation of the rafter system

Throughout the entire process, the rafters in the attic that you constructed yourself should support the following loads:

  • own weight;
  • a mass of roofing and insulation;
  • maximum wind gusts for a given area;
  • The pressure of the snow cover.

Reference: When a roof has a slope greater than 45 degrees, snowfall occurs almost immediately; at 60 degrees, snowfall is completely ignored during computation. However, because of the structure’s height and near vertical location, wind pressure rises.

Two parameters should emerge from the computations: the portion of the rafters that have beams (or, alternatively, puffs) and the installation step. It is incorrect to believe that the loads on a roof cause the wooden bars to enlarge in size. The use of rafter farms made from logs with a diameter of 120–200 mm or lumber with a thickness of 40–200 mm, installed in steps of 50–120 cm, allows the structure to be as rigid as possible. You cannot ascertain these values if you are not an engineer, or more accurately, a builder, as the methodology is highly intricate.

The problem cannot be resolved by using online calculators found on the Internet because their calculations still need to be verified. Using the prepared data that have been calculated for a long time is the solution. Table No. 1, which provides the cross-sectional sections at various lengths and loads, is necessary for this task.

We’ll use an example to demonstrate the calculation methodology. Assume that in your area, the rafters step is 120 cm, the span length is 4.5 m (before the slogan), the slope is 60 °, and the snow load on the flat surface (the projection of the pitched roof) is 100 kg/m². Slate roofing. We believe:

  1. The real weight of the snow cover: 100 x 0.32 = 32 kg/m². The slope coefficient 0.32 is taken from the table No. 2 presented below.
  2. The share of slate coating with a conventional profile is 25 kg/m².
  3. Total specific gravity – 32 + 25 = 60 kg/m².
  4. We calculate the specific gravity of 1 linear meter of rafters, multiplying 60 kg/m² by a step of installation 1.2 m. We get 72 kg.
  5. Return to table No. 1 and select the cross -section of the timber along the flight length. We take a load of 100 kg per 1 m. P. rafters (with a margin). Suitable for a log with a diameter of 140 mm, a 40 x 200 mm board and other materials whose dimensions are in the same horizontal line.

Reference: Layered and hanging rafters are the two types used when installing a damaged attic roof. Just hanging on the gable roof, which between them is reflected in the scheme.

You can accurately ascertain the installation interval for rafter farm installations with the assistance of the final table, No. 3:

The suggested method is appropriate for tiny, six by six-meter rectangular homes. When constructing an attic roof on a large cottage, consulting experts—designers for calculations—is highly advised.

Making the frame

The method that is simplified and shown below entails installing an attic roat in the second stage. This is done by assembling rafter farms on the ground and then installing the finished walls of a shirt or log house. The boards are designed in 15 x 5 and 10 x 5 cm sizes, with a standard length of 6 m.

The upper belt of the rafter system forms at the beginning of the assembly.

This is how step-by-step technology appears:

  1. Harp the beams of the lower belt of the farm taking into account roofing overhangs 25-27 cm on each side. If the length of the beam is not enough, it needs to be increased using the overlay of the same cross section nailed by nails.
  2. Put the beam to the ground and attach vertical racks to it with the corners that form the walls of the attic room. Install the ceiling beam and support for the skate (grandmother), then put two boards of hanging rafters for marking to it and the corners of the frame, as is done in the photo.
  3. Cut the elements in place and fix them. From the remaining parts of the boards in the same way, make the layered (lower) rafter legs and put them to the frame. The farm is ready.
  4. Make the rest of the farms according to the same method.

Suggestions. Typically, the balconies’ facial pediments serve as doors or windows. It is also convenient to install racks and belts on the ground, as well as sheathing openings by lining.

The following video explains how to swiftly and carefully assemble rafters for an attic:

Beginning with the first pediment, prefabricated frames are raised to the walls and alternately fixed in their positions. Install the spacers and beat them into the log house’s walls to prevent it from falling. The second and later farms are positioned in the design position and are boarded together.

Once the rafters are arranged, they must be fastened to the walls using the following methods:

  • brackets to the second crown of logs or bars;
  • on steel corners and galvanized screws, as shown in the photo.

A Mauerlat, a wooden beam set on supporting structures around the building’s perimeter, is used for installation on brick and other capital walls. Mauerlat is then fastened to the stone wall using hairpins or anchor bolts, and a roofing material waterproofing layer is positioned in between. This is how the mounting node appears:

The next stage involves covering the rafter system with a diffusion membrane, which is a film that lets water vapor from insulation escape while providing protection from wind and precipitation. First, roll out the canvas in the lower portion of the roof and use a stapler to secure it to the boards. Next, place the canvas with a 10-15 cm drop. When everything is frozen, take a look at the resulting oblique images. The video displays additional information:

Slate, metal tiles, and other roofing materials are placed atop the crate. The chosen material determines the styling and fastening technology.

The insulation of the attic

As the attic is intended to be a living space, it needs to be well-insulated. Because mineral wool passes moisture and lets the tree "breathe," it is the best "friends" among thermal insulation materials. The layer should be at least 150 mm thick, and up to 300 mm in the north. Insulation is installed in the following order:

  1. Cut the plates of mineral wool and insert them between the rafters.
  2. For insulation of the pediments, put additional racks and in the same way lay the insulation between them.
  3. If the width of the rafter legs is not enough to create thermal insulation of the desired thickness, after laying the first layer, pin the horizontal bars of the counterparty to them. Between them, insert the slabs of the second layer.
  4. Cover the insulation from the inside with a vapor barrier film, laying it with an overlap 15 cm and gluing joints with aluminum tape.
  5. Bind the bar of the bar for facing with drywall or other finishing material on top of the bar.

A crucial aspect. Make sure there is still a ventilation gap of three to five centimeters between the insulation and the windproof membrane when you lay it down. The occurrence of the dew point in mineral wool will cause any moisture to be removed through it.

It takes a lot of work to construct an attic roof, and you cannot do it by yourself. Rafter farms require three people to raise, and the majority of the work must be done with the assistance. Proper initial calculations also play a major role in your event’s success. In the event that the computation process is unclear and no sensible engineers are available, seek advice from skilled artisans such as roofers, whose proficiency is beyond dispute. They will advise you on the best course of action and might even provide you with specifics regarding the setup of these systems.

A comparison between rafter farm calculations and attic roof designs. constructing a gable mansard by hand and insulate the interior.

A blend of functional efficiency and aesthetic charm can be found in a draft attic and gable broken roof. This type of roof, which is distinguished by its unusual triangular gables on two sides, improves a home’s architectural appeal while also being functional. This design optimizes insulation and ventilation while maximizing interior space with the addition of a draft attic.

Underneath the sloping sides of the gable broken roof, the draft attic offers more space for storage or possible living quarters. The distinctive shape of the roof is advantageous for this space, which is frequently used as a comfortable retreat or to store seasonal goods. An open feeling is produced by the angled ceilings, which can be creatively used in home design.

A gable broken roof with a drafty attic is a versatile design feature that is appreciated by both architects and homeowners. This kind of roof reduces the possibility of structural damage over time by facilitating effective rain and snow runoff, in addition to its aesthetic appeal and practical benefits. Because of the way it is designed, it is a well-liked option in areas with different climates.

Video on the topic

House from the beam. The project of a one -story house with an attic with a gable roof. Layout

The attic h.3 – Constructive and layout

Video review of a 6×10 frame house with a broken roof with a black OSB label

What do you think, which element is the most important for a reliable and durable roof?
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Alexandra Fedorova

Journalist, author of articles on construction and repair. I will help you understand the complex issues related to the choice and installation of the roof.

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