How To Cut Tongue-And-Groove Plates

Physical and technical characteristics of plaster material

The technical characteristics of GWP may differ depending on the raw materials used, and the structure of the finished partition block (hollow and solid).

However, when buying, you can be guided by the following parameters:

Index Unit Rev TU plates
ordinary TU5742-007-16415648-98 Hydrophobized (moisture resistant) TU5742-014-03984362-96
Density, no more kg / m³ 1250 1100
No pain in water absorption % 26-32 five
Plate weight Kg 24 29
Compressive strength MPa 5.0
Flexural strength MPa 2.4
Coefficient of thermal conductivity, λA Coefficient of thermal conductivity, λB W / m 0.29. 0.35.
Specific effective activity of radionuclides, no more Bq / kg 370
Noise isolation dB 43
flammability Group NG

Types of construction GWP: solid and hollow (porous)

Both gypsum and silicate boards are of two types: solid and porous (hollow). A conventional slab is made in the form of a solid parallelepiped and is more durable. Porous due to voids has better sound insulation with less weight.

The tongue-and-groove slabs deserve high marks from professional builders and are steadily growing in popularity. However, there are NO ideal building materials. Therefore, consider the main advantages and disadvantages of wall plates.

Dimensions, weight and technical characteristics of the tongue-and-groove plate. GWP

Of course, interior partitions can be built in the old fashioned way. Made of bricks or thick blocks. Drywall looks more attractive in terms of the speed of construction, but the material does not have a sufficient margin of safety and sound insulation.

Therefore, the tongue-and-groove plate remains a popular option, which has long and successfully been used in residential and commercial construction.

Weight of gypsum boards

Due to the standard size, the weight of the tongue-and-groove slabs is also reduced to uniform values. In particular:

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Standard and moisture resistant solid slabs weigh 24 and 29 kilograms, respectively.

The lightweight version (hollow) weighs 22 kilograms.

Thanks to these parameters, the installation is handily carried out by one person.

Installation rules

Installation of interior partitions made of tongue-and-groove plates begins after the erection of the supporting structures. The work is carried out in the following order:

The base is leveled, cleared of construction debris.

The first row of boards is laid, with preliminary application of adhesive to the joint groove. Recommended seam thickness. No more than 2 mm.

Subsequent rows can be fixed to the walls with dowel-nails or staples.

The remaining gap between the wall and the ceiling must be filled with polyurethane foam or a special elastic tape must be laid.

External corners are recommended to be reinforced with perforated profiles.

After the construction of the partition, water pipes are made in it for wiring, sockets and switches, putty and finish.

How to choose glue for reliable installation

For this type of material, a special glue is needed, which will not only simplify the work, but also ensure the reliability of the structure. There are several proven brands of adhesive on the market that are suitable for the construction of GWP partitions. In particular, the boards can be glued:

KNAUF FUGEN (Knauf Fugenfüller)

Tongue-and-groove plate. Scope of application

  • Moisture-resistant hollow tongue-and-groove gypsum slab. Partition material, popular in private construction, allows to operate gypsum-panel structures in conditions of high humidity. At the same time, the heat-insulating properties of the plates are preserved in full.
  • The technology provides for the possibility of erecting single-layer and volumetric two-layer wall and partition structures with an internal air gap of 4 cm.

The partition separating the heated and non-heated premises is located in the zone of temperature differences that contribute to the formation of condensate moisture. The problem is partly solved by the use of hydrophobized insulation, partly. Arrangement of film or diffusion membrane vapor barrier.

The possibilities and advantages of installing partitions on your own

The price of gypsum tongue-and-groove slabs with full reason can be considered budgetary, which determines the possibility of using the material for the implementation of large-scale projects. Self-erection of the partition can reduce the cost of partition and installation work by at least 40%.

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Lightweight construction does not require reinforcement of the floor and its supporting frame, tongue-and-groove connection and glued installation of the plates will help to avoid gross installation errors The tongue-and-groove plates are processed with hand tools. You can read how to mount partitions from PGP at the link.

What makes the tongue-and-groove plates dusty?

We discussed how to correctly install the GWP in our article earlier, now let’s talk about how to process the material. The tongue-and-groove plate is full-bodied. Optimal in all respects, affordable material for the construction of internal walls and partitions.

The tongue-and-groove connection deserves a separate mention, which simplifies self-assembly, guarantees the absence of cold bridges and economical consumption of expensive finishing plasters.

Features of the processing of tongue-and-groove gypsum panels

  • In terms of density, pressed gypsum corresponds to wood, so it is sawn, drilled and milled without any problems. Experts advise using hand dust with fine teeth to cut panels, in this case the cut is obtained with a flat and smooth surface.
  • During mechanized cutting of slabs, a large amount of non-toxic gypsum dust is formed, therefore it will NOT be superfluous to use a respirator, but indoors. Exhaust ventilation.
  • The technology provides for the installation of walls and partitions on a perfectly flat floor, if this requirement is met, no problems will arise during the subsequent installation.

There are no restrictions on the upper or lower location of the ridge. In practice, the ridge of the panels of the lower row is cut off, since with the upper position of the groove, the glued installation is greatly simplified.

Plates are mounted with vertical seams offset by at least a third, in this version the partition receives additional resistance to horizontal loads.

How To Cut Tongue-And-Groove Plates

Mistakes made during the installation of panels must be corrected within 8-10 minutes, before the glue begins to harden. If the defect is NOT eliminated in a timely manner, the glue joint acquires monolithic strength, therefore it becomes practically non-separable.

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How to Saw Tongue Gypsum Plates

The classic fastener for building materials other than wood is a pair of dowels and a screw. The dowel is fixed in the structure, like a base, and the screw, screwing (hammering) into the dowel, expands it, due to which the whole structure is firmly fixed in the base.

It is worth noting that, according to the load on the fasteners, dowels, screws, you can canopy not very heavy objects. So the maximum load on the plastic dowel can be 95 kg (on average 50-60 kg), and the maximum lateral load on the metal anchor is 200-250 kg. (See table below)

For especially heavy fastening to walls made of PPG, through fastenings with a spacer platform on the opposite side of the slab are used, as well as anchoring.

Let’s take a closer look at the dowels of GWP slabs. And let’s start with the universal classic Fischer dowel for PGP.

Dowel TOX

Three types of dowels are recommended in the TOX fixing range:

GWP is collected on gypsum glue. For Volma it is Volma’s glue, for Knauf. Knauf Fugen. In addition to the adhesive boards of the first row, additional corners are attached to the floor. You can use drywall ceiling hangers. One end of the hanger is cut with metal scissors to fit into the groove of the plate. This end is screwed in with screws. The other edge of the dowel is fixed to the floor.

Tongue and groove plates can be assembled with a tenon or an upward groove. This is more convenient when the groove is facing up. It is easier to fill with glue. Then the first row of plates needs to be cut into spikelets.