Tape PSUL: technical specifications, GOST

To ensure high-quality and reliable sealing of joints and joints during the installation of window and other structures will help special PSUL tape for windows. PSUL is a pre-compressed sealing material, presented in the form of a self-adhesive tape. Consider the main characteristics and scope of this seal, find out how to figure it out labeling and get acquainted with step-by-step instructions that will help to carry out trouble-free installation on all the rules.

Description of tape

The self-expanding tape is a black or gray strip of rectangular section made of an elastic porous material resembling foam, a porous polyurethane elastomer. It is impregnated with a composition based on acrylic, which provides resistance to adverse external influences. An adhesive layer protected by a film is applied on one side.

After opening the roller, unwinding the tape and placing it in the seam, the thickness increases to the parameters indicated in the marking, while the width of the product remains unchanged.

Appointment, scope

According to GOST 30971-2012 PSUL sealing tape is used to create ventilated installation joints for installing window blocks. Such a product solves a whole range of tasks:

• protects the mounting foam from moisture and sunlight;
• serves as an obstacle to the development of fungus and mold;
• due to vapor permeability, it removes moisture generated in the pores of the foam due to condensation due to temperature changes, to the outside;
• increases the service life and reliability of the seam;
• prevents freezing and seepage of water, the penetration of air from the street and dust into the building.

In addition to insulation and protection of joints during the installation of plastic windows according to GOST, PSUL tape is used for the following purposes:

• sealing joints of concrete parts, window sills, gaps between the wall and window and door frames;
• sealing of dormers, openings, roofing structures;
• isolation from noise and vibration during the installation of air conditioners, fans;
• sealing joints of parts of prefabricated structures, roof elements, pressureless pipelines (sewers, storm drains);
• external insulation of joints of wall panels;
• sealing joints of wall boards made of wood and other building elements;
• filling gaps and gaps in the areas where the chimney adjoins the roof, ventilation duct joints.

Due to the specific properties of the material, self-expanding tapes can seal joints with uneven surfaces.

Technical characteristics and properties of PSUL

The PSUL sealing tape has the following properties:

• resistance to various environmental factors - precipitation, ultraviolet radiation, etc .;
• resistance to deformation;
• compatibility with any materials;
• preservation of elasticity over the service life;
• chemical neutrality;
• water repellent properties;
• resistance to mold and mildew;
• ability to withstand pressure up to 600 kPa for several hours;
• high heat and sound insulation characteristics.

Technical characteristics of a self-expanding material in the form of a tape made of foamed polyurethane with acrylic impregnation:

• operating temperature - from -50 ° С to + 90 ° С (varies depending on the brand within 5 ° С);
• resistance to deformation - from 14%;
• dimensions in thickness in compressed form - from 2 mm, in the expanded state - up to 8 cm;
• thermal resistance - up to + 1000 ° С;
• fire resistance class according to GOST 30402-96 - B1 (flameproof building materials).

Indicators of water resistance and frost resistance in accordance with GOST

State standard GOST R 53338-2009, which contains a description of the material and its classification, subdivides self-expanding tapes into 3 classes according to the indicator of the limit of water resistance in the working state compression:

1. Class A - over 600 Pa.
2. Class B - at least 400-600 Pa.
3. Class B - not less than 200-399 Pa.

Also, the specified GOST provides for the division of products into types of execution:

• I - optimal for regions with an average monthly air temperature in the coldest time of the year up to -10 ° С. The minimum working temperature is -25 ° C.
• II - for regions with average monthly January temperatures up to -20 ° С. Minimum working temperature - -45 ° С
• M (frost-resistant option) - for regions with an average monthly temperature in January below -20 ° C. Minimum working temperature - -55 ° C

Tape marking

Labeling of the tape should include:

• Brand name.
• Seal class in terms of water resistance limit.
• The numbers represented by the fraction, where the numerator is the width of the product, and the denominator is the range of the optimal width of the gap to be sealed.
• GOST number.

Example:

Liplent PSUL A 20 / 8–20 GOST R 53338-2009

Tape of the Liplent PSUL brand, class A tape, with a water resistance limit of 20 mm wide, suitable for sealing joints of 8–20 mm thickness.

The type of product for frost resistance is indicated additionally.

Manufacturers

PSUL and its application technology were developed by the German company Illbruck, which is its first manufacturer. The most famous domestic products are Profband PSUL and Liplent PSUL. Decent quality has Belarusian products PSUL-EUROBAND.

Tape selection

When choosing a self-expanding sealant, it is necessary to focus on the following parameters:

• The width of the adhesive layer - the adhesion strength depends on it. When installing windows, you should choose a tape with a width of 2 cm.
• The degree of expansion of the product - determines the filling density of the gap. The optimal value is 20–30% of the initial squeezed state, but not more than 60%.

When buying, do not forget to ask the seller for a certificate of conformity.

Installation

PSUL is completely ready for use, its installation does not require the use of special tools and devices. The sealant is selected along the width of the seam.

Installation of pre-compressed sealing tape is as follows:

• PVC window and window opening are prepared for installation. To do this, dirt and loose plaster are removed, the surface is cleaned of dust with a vacuum cleaner, wiped with a damp rag.

It is recommended to treat the surface of joints and seams with a special dedusting compound.

• The surface of the quarter is covered with an acrylic primer for outdoor use.
• Marking is done, fasteners are installed.
• A few centimeters (3-5) from the beginning and end of the roller are cut off and not used. A piece of sealant of the desired length is cut off, the paper layer is removed.
• The tape is mounted on the outer side of the frame facing the street, so, indented from the outer edge of the quarter by 3-5 mm. The product is pressed to the surface.

Bonding PSUL occurs end-to-end, there should be no overlap. Vertical joints are filled without interruption of the tape at the cross joints. Do not bend the seal at the corners.

• After filling all the gaps between the window and the wall, you must wait until the tape expands to its free state.

The rate of increase in the thickness of the self-expanding material to the working state:

• at a temperature of 0 ° C the tape expands to the optimum size in 48 hours;
• at an outside temperature equal to + 18–20 ° С, the expansion process lasts 2-3 hours;
• at + 30 ° С expansion occurs in 0.5 hours

Tip. You can speed up the process of expanding PSUL using a hairdryer.

The final steps after taking the final dimensions of the tape will be the sealant processing the junction of the frame and the window opening and closing it with a filler and a drain.