Karkasnik, insulated with straw and original façade, slate

Straw bales as a filling for wood frame - natural insulation for energy-efficient homes

Frame housing is becoming more common in the cottage construction segment, as well as the construction of energy-efficient designs. Most often, to create a thermal circuit samozastroyschiki used stone wool, at least - Sediment or zaduvnye heaters. If we talk about the natural thermal insulation materials, there is a leader straw and its variations - light or heavy adobe. One of the craftsmen of our portal just built a country house on frame technology, insulated with straw bales around the circuit. His experience is not only interesting, but also useful for anyone who thinks about this technology.

Content

• Patrimony
• Frame house from straw cvz

Patrimony

Straw - international material; adobe huts built of clay and straw bricks and plastered on both sides of the clay plaster - a classic Slavic village housing. The Germans used alone as a placeholder for the half-timbered houses, and the French in the early nineteenth century, get the hand to make the whole wall panels made of straw. As for the construction of straw bale, here tried the Americans, specifically, residents of the state Nebraska, developed the mechanical tyukovateli it possible to obtain highly compacted briquettes density. Such deeds of their pushed lack of a building material in the steppe state, oriented to the cultivation of cereals.

Karkasniki the Scandinavians for centuries to insulate all the materials at hand, including straw, since no stone wool or structural panels have not yet invented. Warming of the bales, but not in bulk, allows for greater density, in addition to the compressed straw clay plaster falls significantly better.

Frame house from straw cvz

cvz

Member FORUMHOUSE

I want to share the project and experience in the construction of his house, maybe someone will come in handy. Fundam: Pile on asbestos cement pipes 200 mm in diameter. Second floor: attic, but the basic premise of normal height, cut only the walls of outbuildings. The walls, floor and roof are insulated straw blocks.

A relatively small weight of the wooden frame filled with straw makes it possible to save on construction of a monolithic foundation. But as planned a few brick walls, in order to increase the heat capacity of the house and create a heating system with a loop laid in the wall below them filled grillage.

Designed by a professional framework is characterized by simplicity and ease of assembly and problems executing not created, then as a complex roofing system was "in the teeth" only the fourth team, and they have it collected more than three months. The coating chosen craftsman slate, but modernized - colored fashion chocolate color. according to cvz, this is the best material in terms of price, practicality and attractiveness.

Roof "pie" is made as follows:

• Slate.
• Ventzazor.
• Membrane.
• Straw bales.

Straw was purchased in rolls, as well as an appropriate setting for the baling nearby was not, did his - straw stuffed by hand, then pressed to the desired density and manually fixed rope. Despite the low productivity and the complexity of the process, self-made tyukovalka mastered the planned volume of about 2000 bales, for lack of a more technological versions.

On the question of the theme parties, why he prefers bales Samani easy answers so.

cvz

Saman colder, and we've got a cold for -30⁰ not uncommon. Also, you need a lot of time to dry and to insulate the roof in such a way it will be very difficult. Roof I already made in the roof units will be installed inside. While everything is relative, I am not only because of its cheapness turned to straw. Saman solve my problem as well not be able to, because I want to warm straw house on all sides, not just the walls. The roof of my attic, so I can not just scribble in the attic straw. It is also important that the dry bales can be warm and frost, while the wet process is limited to the construction season.

However, choosing a dry aggregate, should bear in mind that the straw does not possess windproof properties, and even scanty cracking plaster layer will reduce to a minimum its ability to insulate, regardless of the thickness layer.

After laying in the wall protruding straw tonsured brush cutter to simplify further plastering. To sustain the level at the frame elements stuffed "beacons" of the rectangles thick plywood. Later on it will also be secured crate under the ventilated facade. It was originally planned three layers of plaster, but it has turned four:

• Liquid clay solution, into the surface thoroughly vmazat bales.
• A solution of the clay with sand thicker consistency.
• The solution from the clay and gypsum plasters (1/10) - used for sealing cracks, washed slanting rain.
• A solution of lime plaster - to prevent the formation of cracks.

Sex insulated straw bale on top of the rough layer plywood (Waterproof, 100 mm), coated on top of bales clay solution.

Interesting implementation of frameless glass - to minimize the heat loss of windows, most deaf and windows are inserted in the aluminum profile factory, and home-made frame.

cvz

Approved a foreman such variant: waterproof plywood of 20 mm thickness is the depth at box wall thickness, plus 50 mm (margin for cladding internal walls plasterboard). It will frame and soffits in-one: The inside of the frame on the screws and the adhesive strip sits Same plywood 20 mm, 180 mm in width. On both sides it will puts glazing, the outer side of insulating glass - beadings. Approximately as in the drawing, but then we thought to make a box depth of 200 mm, and then decided to expand to the entire thickness of the wall.

As a finishing layer in a ventilated facade system chosen craftsman sliced ​​into fragments flat slate - layout "scales" vrazbezhku with overlapping sheets in horizontal rows. Despite wetting sheets by a pressure washer, remove the dust completely failed.

All followers craftsman recommends the use of a respirator and wash the strips at once, otherwise, the formed paste firmly adheres to the edges.

Coversheet special facade paint in two layers, the first held spray gun, the second - foam roller with a long handle. As a fixture - black screws, three pieces on the bar, following a series of overlapping cap screws from the previous. To prevent water from flowing under the liner during heavy rains over the horizontal battens stuffed vetrogidrozaschitnuyu membrane.

Angles protected metal plates in the color of the roof - side width of 100 mm.

After facade cladding installed window - two double glass pane with a conventional glass spaced apart by 15 cm and 5 mm thickness installed manner given earlier. New windows are mounted without a seal only on sealant between frames in - opening for the compensation of pressure and humidity.

Internal partitions and overlap have warmed as straw bales, just press gathered wood and smaller dimensions.

Inside walls of straw first two layers of the blister plaster - promazka liquid diluted clay and a thicker layer of clay and plaster. First craftsman wanted to align all the surface of the GFC, but experienced Gameday talked him out, resulting in the drywall only partitions and load-bearing walls was taken all the same plaster. Since the straw filling - is to increase fire danger, all the wiring that passes inside, put in a special corrugated fire-retardant plastic.

Because of the miscalculations in the design of pile foundation, pressed through the inner walls of the basis on several centimeters, which makes it difficult when you install the door, so the subfloor had to withdraw to "zero". On the second floor, where he subsequently laid kvartsvinilovoe coating base is made with two layers of plywood, with overlapping joints.

The onset of winter has revealed solid heat loss through the joints between the sub-floor and walls. After all seams propenyl, clear drafts disappeared. However, there was a problem of outflow of heat through the unclosed ends of the bales in a roof space - solved the problem and covered top layer ekovaty (20 cm). Although the thickness of the solid block (40 cm) in the floor, it also missed the heat, which has proved check imager. Fairly pomuchat, additionally have warmed underground layer Epps (40 mm) around the perimeter of the base on top of plywood. Also planned for the future blind area insulated and insulated the basement to minimize the outflow of heat.

This winter, the house was used occasionally, respectively, was heated as well, there is a clear-expenditure of energy. Why is this happening and how to deal with it, topikstarter will understand when to finish interior trim and move to permanent residence. And next winter will test event. However, now there are some positive points that outweigh any shortcomings.

cvz

This season, the house was warm, so I further insulate it from the bottom (hem sheets Epps 40 mm) and top (20 cm Cellulose Fiber in the attic on top of the straw). But to say that the house consumes little energy for heating - I can not yet. There are a lot of factors, and which ones are more important to me is not clear yet. Truly I will be able to evaluate the result, when I begin to live there permanently. Now about pleasant: the sensations - the house is very easy to breathe, no excessive moisture and lack of air, while ventilation in the house is virtually nonexistent. My wife is very ill enough sleep in the apartment, but now she felt in the morning is very good. Overall - good!

Be that as it may, the craftsman of his home happy and no regrets about the selected form factor, despite the existing problems. His experience can be useful to those who also think about straw filling.

All the details of the construction of a video report - Topic about karkasnike with straw insulation. An energy-efficient home on monolithic technology - article about claydite, Another construction-insulation material - gazoblok. In the video - the real home of the passive house construction technology.

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