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Assortment / Dry wall construction



Unused attic space allocation - new room just for you

When allocating and building a unused attic space, you are given a wide selection of options for creating a new quality living space. It allows you to gain more use of your limited internal space, while making the process fast, easy and safe.
Before construction, it is needed to obtain all proprietary permits, because we are changing the usage of a part of the building.
For furnished loft spaces for part-time use, the permit process is much easier then the one for making a full-time use space. In any case, make sure that you have all the required documents before you continue.

Combining construction and insulation systems, your loft space and be built with all requirements in mind, with a well made thermal, sound and fire protection. In dry wall construction you don't have to worry about additional humidity and dust in your living space and the new space is usable as soon as the construction is finished.
Rigips systems with profiles, insulators and boarding allow for easy and fast construction which significantly slows down fire spreading (F 30) or even stops the fire in whole (F 90)


Attic construction - standard way

Boarding: Rigips boards, large format, 12,5mm thickness

Board attaching: Self-winding rigips bolts - 35mm in length, or alternatively steel clamps

Subconstruction: Wooden slabs (2. class), 35mm thick, sharp edges, attached with self-winding Rigips screws 55 mm in length
Boards 40mm thick require 70mm Rigips screws.



Insulation:
Rock or mineral wool, laminated with aluminum foil. Possible application of narrow border strips or insulating roll of the with corresponding to the distance between the roof framing. Triangular rockwool elements are suitable for impressing between the roof framing. Non-laminated insulation materials are suitable for filling the irregular spaces between roof framing and smaller cavities in the structure.

Mineral wool felt laminated to aluminum foil allows fast and easy installation of the insulator. Excess of reinforced foil protruding from both sides is easily nailed with wide-head nails or steel connectors with 10 to 20 cm spacing in between. Aluminum foil should face the heated space.
Insulation material is pressed tightly between the roof framing. The width must be 2 cm larger than the left spacing of roof framing. Be careful! Aluminum foil attached to the roof framing or side gable wall must not leak wind. You should paste a special self-adhesive aluminum tape to all joints and flaps! Insulator roll or triangular plate elements must be precisely tailored with a sharp cutter and tightly pressed between the roof framing.


Boarding:
After placing the thermal insulation between the roof framing and pillars, laths should be set perpendicular to them. Lath dimensions should be aligned with the spaces between the roof framing: 48/70mm size for spaces up to 70cm, 50/30mm size for spaces up to 85cm and 60/40mm size for roof framing spaces up to 100cm. When setting fire-protection plasterboard, laths should be fastened at 40cm spacing.
Of course, instead of wooden laths, you can apply roof hut-profiles attached to the roof framing by flexible metal brackets. If the insulator is not covered with laminated foil, vapor barrier (for example: polyethylene (PE) film of 0.2 mm thickness) must be installed between the plasterboard lining and thermal insulators.


Boarding:
With the longer edge, perpendicular to the laths, a fire protection plasterboards are attached. The distance between drilling plasterboard-screws is about 17 cm. Fist, cover the horizontal surfaces on the wooden beams, and then the slope of the roof. It should be ensured that the tongue and groove are mutually offset at least one space between the rails as the four tongues shouldn't meet. Plates intended slope must be processed before placing the edges that touch the horizontal paneling on the struts. Depending on the slope of the roof, the upper edge of the plate should be chamfered at the same angle.



Walls with significant cost reduction
With Rigips wall system you can: rationally encase the existing walls or set up partitions with substantial cost savings. Plasterboard panels can be also glued to the walls. With the application of the suitable insulation material significant acoustic and thermal protection improvements can be obtained.

Partition walls and wall coverings with significant advantages
With the construction of Rigips drywalls, significant cost savings are achieved in comparison with conventional walls. Hollowness of walls is ideal for rational implementation of the installation of all types. At nearly dry, flat surface paint, wallpaper or tiles can be applied. In terms of sound insulation and fire protection RIGIPS walls can be compared with any other ones on the market.

Lining the walls
First, we should clear the distinction between the dry plastering by pasting plasterboard plates on a massive wall and coating very uneven or poor load-bearing wall by adding additional substructure in front of the wall.
When preparing for dry plastering by pasting plasterboard onto the connective glue, the biggest attention should be paid to dryness of the base. If you have problems with capillary moisture, leaks or freezing of the walls, dry plastering is not recommended. While lining concrete surfaces they must be clean - previously removed traces of mortar and plaster, wax or oil from the formwork, and the fresh concrete must be thoroughly dry. Smooth concrete surfaces must be pre-impregnated (R-Kombikontakt) and highly absorbent (aerated) concrete must be processed with the basis (R-Kombikontakt).

If the combination of the wet and dry plastering is applied, first you shoud apply the wet plaster, and then the dry plaster - after the wet plaster has already dried out. The basic rule is that the walls are coated prior to the ceiling.
Connective glue Rifix applies at the dry plastering of the massive walls by pasting plasterboard thickness 12.5mm. The dry mortar is not suitable for wet and damp walls, nor to enhance the sound or thermal protection of poorly insulated walls. Large-size plates or plates that are both tailored to reach from floor to ceiling are applied for effective and quick lining. Before applying rigips boards you should install all the concealed installations.

Distribution and plug in boxes are set so that they protrude about 2 cm - openings should be carefully cut from plasterboards at those places. On a boards which are set at the full height of the wall (up to 15 mm below the surface of the ceiling!) bonding adhesive is applied by spotting (as shown on the picture).
In the band around the window niches and other indentations board should be completely covered with adhesive. Board with adhesive should be pressed against the wall, and then carefully aligned with surrounding boards with the rubber hammer. Cutted pieces of boards are set by the floor to create spacing of 10mm (5mm against the ceiling) for air to flow and dry the adhesive more quickly.

Pasting the rigips-tape: Narrowly cropped strips of plasterboard-plate (12.5 mm) are applied to the walls at the distance of 60cm to even out bigger irregularities on the old walls. By controlling the thickness of adhesive and pasting vertical strips you can create the smooth and flat surface ready for proper paneling.

Pre-wall shell on a wooden laths: Wherever your uneven wall prevents you from the proper installation of the plasterboard panel, making the substructure of laths (30/50 mm) is recommended which are then applied to a gnarled wall with the dowels and screws. All the front edges are aligned in the forced plane by inserting pins and pieces of lath. Lath are placed at the intervals of 100 cm, and plasterboard panels are attached to them by screws. Insulation wall panel: If the wall panel needs to improve thermal and acoustic protection, insulation material is applied on the wall between the laths of wooden substructure. If this protection is applied on the inner surface of the outer wall, barrier should be set over the insulator. Plasterboard panels are applied to the laths with plasterboard screws of 35 mm length, at the 20-25 cm spacing.

Free standing pre-wall shell is set on the places where uneven wall should be smoothed or installation installed. In doing so, in the cavity of this substructure insulation can be applied to improve thermal and acoustic protection. Standard plasterboard UW/CW profiles, CW profiles of the 50 and the 70 mm width and standard rigistil-profiles or wooden girders section 6 x 6 cm are used for building the substructure.
Mounting the substructure and paving: These pre-wall constructions are made analogous to plasterboard partition-walls structures. If the pre-wall shell with built-in thermal insulation is placed in front of the outer wall, vapor barrier should be set up below the plasterboard boards paving.

Pre-wall shell on the adjustable holder: By applying UW-profiles or wooden laths (30/50 mm) attached to the adjustable steel holders relatively shallow pre-wall construction are formed. Holders are set by the vertical line, on a horizontal spacing of 60 cm. They are attached by the dowels and screws, and their back side should be covered by the self-adhesive sealing tape. After mounting, the ends of them are bent at right angles from the wall and screwed onto the sides of the profile or laths. UW-profiles or laths are free to move within the holder and easy to erect in the upright position, regardless of the unevenness of the wall.
The isolator is affixed to the wall between the laths or profiles, and then the projecting ends of the holder are perpendicularly bent once more, this time by an isolator. Finished substructure is then lined with plasterboard board thickness of 12.5 mm by machine-twisting plasterboard screws (35 mm) in the UW-profile or laths at the intervals of 25 cm.


Construction solutions
The practical construction solutions: Pre-wall shells coated with layered rigitherm-plates and filled with mineral wool, provide targeted heat protection. If this construction is applied to inner surface of the outer wall, installation of a vapor barrier is necessary which will prevent the occurrence of condensation within the insulation lining. The necessity of installing vapor barriers or brake is determined by the thickness and the type of material of the outer wall, and can be determined by the budget. Pipe with water may not be placed between the outer wall and the thermal insulator. Thermal protection of the outer wall can be improved by pre-coating layered rigitherm boards affixed with a layer of insulator (mineral wool or polystyrene).

As the polystyrene (PS) is characterized by high resistance to water vapor, with the installation of such insulators installation of additional vapor barrier is not always necessary, especially to buildings with breathable outer wall. However, additional vapor barrier is required in front of the walls with slow or low vapor diffusion (eg, concrete, clinker, natural stone) or at the walls with the vapor sealed outer coating. Layered rigitherm-panel insulator mineral wool (MF) require setting up additional vapor barrier on the inside of the shell, thereby preventing the occurrence of condensation in the pre-wall hollow shell.
For additional vapor barrier aluminum (Al) or polyethylene (PE) film are placed between the plasterboard panel and thermal insulator. Type, thickness and water vapor permeability of the film depends on the physical conditions at the site and on the installed materials, and can be determined by the budget.

Construction plasterboard can, if necessary, be ordered with the laminated aluminum foil 30, PE-foil or with reinforced kraft paper, which is a practical solution in the execution of the dry plaster plasterboard. Improving sound protection performance of the pre-wall shell depends primarily on the distance between the wall and the plasterboard-paving and the mass of a plasterboard panel itself. With the single-layer paving on the right distance from the wall noise reduction of 15 dB is easily achieved, which corresponds to a three times improvement compared to the bare wall. For sound insulation of voids in the structure the best fits are soft, relatively massive and absorbent materials, eg, stone or mineral wool.
Plasterboard layered roofing panels are designed for thermal and sound insulation of the roof, but you can use them and in pre-wall constructions. They provide better insulation Rw-values, regardless of the level of the so-called longitudinal noise in the construction.

However, the real improvement of insulation qualities of the barrier between the two rooms - expressed in a difference of normalized values of noise level Dn, t, w, depends primarily on the spread of longitudinal noise in peripheral elements of the building on which the barrier is attached to. If the noise spreads through the barrier due to its low mass, badly applied insulation, air ducts or poorly sealed connection elements, the condition can be significantly improved by the proper execution, better insulation or increasing its weight by the additional paving.
If the assembled partition wall has the satisfying mass and a good insulation, that is a sign that the noise from one room to another spreads through the adjacent building elements and can't be significantly muted by the interventions in the bulkhead. In that case, the longitudinal expansion of the noise can be prevented only by the additional coating insulation of the adjacent building elements.


Ceiling


Ceiling systems for all requirements
Plasterboard ceilings with hanging wooden or metal grid are used for reducing the height of the room or to cover the installation of the ceiling cavity. To the ceiling, additional enhancements can be obtained with plasterboard ceiling and mineral wool insulation; such as saving heat by improving the thermal insulation or improving the sound insulation of the existing raw ceiling.
Also, the use of perforated plates for sound insulation can increase fire protection.

Plasterboard ceiling systems for extremely functional and aesthetic requirements
With the certain accessories available on the market, lighting systems, ventilation and air conditioning can be easily integrated in the ceiling joists. Rigips acoustic ceilings offer a wide selection of high quality effective perforated plates. Rigips offers systems without joints or removable cassette ceilings of various designs and different performance variants. Suitable for all individual requirements.
Rigips ceiling coverings with direct mounting substructures to the raw ceiling serve mainly to obtain flat and smooth surface ready for further finishing.
They are primarily used for the renovation of damaged raw ceilings. Apart getting the ceiling surface without joints, they can add optical accents ...

Headlining Directly attached to the wooden substructure
Boarding:
Large gypsum-boards 12.5 mm thick. Vario-edges (tapered and rounded)
Board attaching:
Self-drilling plasterboard screws for machine twist, length of 35 mm. Alternatively - fix with steel couplings.
Smoothing:
The coupling joints and screw heads are processed with spatula and smoothing mixture in a few common work steps.




Subconstruction:
Wooden strips second class, with sharp edges, fixed with plasterboard screws. Bearing laths 60/40 mm Mounting laths 50/30 mm


Attachment of supporting laths on a solid ceiling:
Bearing laths are attached to the massive ceiling with the appropriate dowels and screws. Mounting points should be first marked on the ceiling and then dowels or steel anchors impressed in the weils. Then the holes are drilled in the laths and the screws are twisted into the plugs through them. The distance between the mountings should be set as described above. On the wooden beams ceiling, supporting laths should be attached with the sufficiently long wood screws (lath thickness x 2).
Alignment:
Bearing laths should be checked with a spirit level, and padded with thin planks or metal plates if necessary. Mounting laths should be attached to bearing laths by twisting plasterboard screws length 55 mm, at all points of overlap.
Boarding:
Plasterboards of 12.5 mm thickness are attached to a bearing laths with the plasterboard screws 35 mm length. Self drilling plasterboard screws are screwed mechanically, on a 17 cm spacing. When installing the board, make sure that the four joints do not meet at a single point.