WO1982000312A1

WO1982000312A1 - Ventilation strip for building constructions

Info

Publication number: WO1982000312A1
Application number: PCT/DK1981/000070
Authority: WO
Inventors: T Jorgensen; H Haukohl
Original assignee: T Jorgensen; H Haukohl
Priority date: 1980-07-10
Filing date: 1981-07-09
Publication date: 1982-02-04
Also published as: SE436292B; FI820802L; FI69675C; SE8201429L; DK146858C; FI69675B; NO820677L; DK296880A; DK146858B

Abstract

Ventilation strip for ventilation of exterior sidings in building constructions. The strip has horizontal apertures which provide possibility for ventilation and for leaking out of penetrating water and condense. The apertures of the trip have an airflow that is more than 50% of the ventilated cross-sectional area (4). Combined with support surfaces (14), the longitudinal ribs (9) create chambers (13), that via the vertical holes (12) are ventilated to the horizontal apertures (10). The vertical holes provide an easy way of setting up the strip, because they are used for nails whereby the strip is kept in position until the siding is mounted. Furthermore, the longitudinal ribs (9) make a funnel for the condense-and-penetrating water that accumulate in the ventilated space (4). The water is conducted into the ventilation strip (8) and passes out without damaging the construction and the siding (7). In the channel (15) in the strip a diagonal net (10) is placed preventing entry of animals and insects, which could cause problems in the construction. The diagonal net (11) makes it possible for water to leak out and for air to pass by in an amount which is more than 50% of the ventilated cross-sectional area. The ventilation strip (8) presses tight to the supporting sides (14) and keeps the weather protection felt (3) tight, and thereby avoids leaks in the construction.

Description

Ventilation strip for building constructions.

By the use of wooden constructions in connection with non selfventilated sidings, such as boards, plywood and si dings made of plastic, steel, asbestos-cement, etc. a ven tilated space is necessary to keep the supporting construction healthy, dry and free of rot. Today, this ventilation problem is solved in many ways, such as,by the use of notches in the sill, by the installation of pieces of lists or by drillinlg holes in the sill. All these solutions have certain weak points and will not give an effective and safe ventilation. The ventilation notches are often so big that smaller animals and insects easily can enter the ventilation space and damage the construction, or prevent a good ventilation. Furthermore one does not obtain that the weat her protection felt are pressed tight to the supporting construction along the whole area, and therefore one gets draught in the construction. Most often, the traditional solutions dont give the optimum ventilation, why you are forced to thicken the construction more than necessary. The mentioned solutions also produce the problem that condense and penetrating water will affect the organic materials of the wooden strip and thereby possibly cause rot and dry rot, even on the horisontal wooden strip and on the siding.

The ventilation strip is characterized by the fact, that at the same time a ventilation is possible it is also possible that penetrading and condense water can leak out without damaging the supporting structure. Furthermore, the strip prevents the entry of animals and insects. The strip also makes sure that the weather protection felt is pressed tight to the supporting structure and that the siding is supported in its full lenght. The relatively big horisontal apertures make sure that that an effektive ventilation is possible in a smaller space, and you can hereby limit the thickness of the construction. The vertical holes make sure that the sidings and the supporting construction are kept dry and healthy, even on the sides of the ventilation strip. At the same time the vertical holes offer an easy way of nail ing up the strip. Owing to the diagonal net you can reduce the size. of the holes in the net, so that it will function efficiently even for smaller insects, and so that the ventilation area will not be closed by water that cannot leak out, due to the waters surface tension. Also the small ho les in the diagonal net prevent forreign matters and dust to be sucked into the ventilated space. The diagonal net is placed in a channel in the strip, preventing the water which are to be drained off, to get in contact with the construction and the siding. Otherwise the water and the moisture could destroy the construction and the siding.

On the following drawing a ventilation strip according to the invention is shown

Fig. 1 shows a part of the strip in top view.

Fig. 2 shows a cross sectional view of the strip.

Fig. 3 shows a part of the strip in side view.

Fig. 4 shows the strip placed as a construction member. Referring to the numerals of the drawings :

1 Wooden sill, 2 Insulation, 3 Weather protection felt, 4 Ventilated space, 5 Brick felt, 6 Concrete footing, 8 Ventilation strip, 9 Ribs and funnel-shaped ribs, 10 Horisontal ventilation apertures, 11 Diagonal net, 12 Vertical holes, 13 Channels between the side of the strip and the supporting surfaces, 14 Supporting surface, 15 Channel where the diagonal is placed.

Claims

Claims .

1. Ventilation strip, charecterized by the fact, that it presses tight to the supporting surfaces (14) in its full lenght, at the samm:--time it makes it possible for water and air to pass trought, and even ventilates the supporting surfaces. A diagonal net further more makes it possible, that water can penetrate even with very small holes in the net.

2. Ventilation strip, defined in claim 1, charactized by the fact, that it has horizontal apartures (10) for by passing af water and air, in the full lenght of the ventilated space (4).

3. Ventilation strip, defined in claim 1, charecterized by the fact, that it has vertical holes for ventilating of the chamber (13 ), between the strip and its supporting surfaces.

4. Ventilation strip, defined in claim 1, and charecterized by the fact, that it has longitudional ribs which makes ventilation chamber between the strip and the supporting surfaces, further more it creates a funnel and keeps the strip in balance and presses tight to the supporting structure along the supporting surface of the strip.

5. Ventilation strip, defined in claim 1 and 2, charecterized by the fact , that at the same time it presses tight to the supporting surfaces, it makes it possible for a by passing area, in an amount of more than 40% of the cross sectional area of the vertical ventilation space.

6. Ventilation strip, defined in claim 1, 2, and 5. charecterized by the fact, that a diagonal net, which provides a possibility of by passing air and water, by the fact that the area of the holes in the net, is bigger than 50% of the cross section area, of the ven tilated space.

7. Ventilation strip, defined in claim 1, charecterized by the fact, that a diagonal net, which makes it possible for water to pass by, by the fact that the weight of the accumelated water provides a larger force, than the force provided by the surface tension of the water, and the water will therefore leak through even very small holes in the diagonal net.

8. Ventilation strip, defined in claim 1, 6, and 7 charecterized by the fact that the diagonal net is placed in a chamber, so that accumulated water will not affact and weaken the supporting surfaces.

9. Ventilation strip, defined in claim 1, 2, 3, 4, 5, 6, 7, and 8, charecterized by the fact that, it is made of a material, which cannot be affected by moisture and corrision.