Butyl tape is a modern sealing material that is widely used in private and commercial construction. It is available in different sizes and can have a layer of aluminum foil, foil polyethylene foam and even acoustic felt. But one thing remains unchanged: the presence of an adhesive butyl rubber surface, easy to use and environmentally friendly.
Liplent SD - one of the varieties of butyl tape - is intended for sealing external joints of windows and doors
Compound
The basis of the material is a butyl rubber polymer composition, which remains plastic and adhesive in the range from −40 to +100 °C. It can cover the tape on one or both sides, and is protected on top with anti-adhesive paper. Thanks to the properties of butyl rubber, such tapes have high performance characteristics.
Butyl rubber is a synthetic rubber based on isobutylene. The substance is characterized by high heat, cold, light and ozone resistance. Butyl rubber allows air to pass through approximately 20 times less than natural rubber. Resistant to moisture and aggressive environments - solvents, alkalis, acids, alcohols, vegetable and animal fats.
Purpose
Duplicated internal BAUSET tapes are used for internal vapor barrier of the installation seam along the entire perimeter of the window, and also prevent moisture and condensation from escaping from the seam onto the surface of the slopes. Duplicated full-butyl tapes are suitable for any type of slope finishing, including plaster.
It is used along the entire perimeter of the window, except for the lower junction of the window block to the wall opening (at the location where the window sill is installed), where it is recommended to use a vapor barrier metallized tape.
Properties and advantages of butyl tapes
- Butyl tape demonstrates excellent adhesion to metal, wood, concrete, plastic, polycarbonate, glass, brick, ceramic tiles, and ondulin.
- Suitable for smooth and rough surfaces.
- Forms a moisture- and airtight sealing layer.
- Sticks reliably and for a long time: does not lose its adhesive ability even under the influence of mechanical loads (tearing or shear forces).
- Not damaged by contact with precipitation, ultraviolet radiation, or chemicals.
- Thanks to the self-sealing effect, it is not afraid of punctures and cuts.
After installation, butyl tapes retain their performance properties for 10–12 years
Dimensions and approximate cost
Diffuse insulating tape for installation outside (under low tide):
- Width -70 mm;
- Length in a skein – 25 m;
- The price of a skein is 436 rubles.
PSUL for use at sub-zero temperatures:
- Width – 20 mm;
- Thickness – 8 mm (40 when uncompressed);
- Length – 5 m;
- Price – 160 rub.
Internal duplicated tape:
- Width – 100 mm;
- Length per skein 25 m;
- The price of a skein is 377 rubles.
Inner metallized tape:
- Width – 45 mm;
- Length – 24 m;
- Price for 24 m – 523 rub.
Tape for window sill profile:
- Width – 200 mm;
- Length – 12 m;
- Price – 600 rub.
Differences between butyl tape and bitumen tape
Butyl tapes are a new generation of sealants that outperform traditional bituminous materials in many respects:
- Durability . Bitumen dries out and becomes brittle within six months to a year after installation, and when heated to 70 °C (for example, on an open roof) it begins to drain. Butyl rubber does not react to temperatures up to 100 °C and retains its original qualities.
- Ease of installation . Butyl tape can be installed perfectly without heating at air temperatures down to −15 °C. It is enough to peel off the anti-adhesive layer and apply the tape with the sticky side. Bituminous materials need to be heated, which requires special skills and tools.
- Environmental friendliness . Unlike bitumen with the “aroma” of petroleum products, butyl rubber is environmentally friendly and does not emit harmful substances or unpleasant odors. It can be used in residential areas, for example to seal joints between windows, doors and walls.
Bitumen-based tape will last much less than butyl tape: within a year or two you will have to repair the joints again
Installation features
The tape is applied both before fixing the window block in the opening, and on already installed structures. The first option is more convenient in cases with the installation of external insulation.
Let's consider the algorithm for using tape insulation using the example of gluing pre-compressed sealing tape (PSUL) and internal GPL-S with an additional strip of double-sided tape:
- We prepare the opening. If there is an old window unit, we dismantle it as carefully as possible, without causing unnecessary damage. After dismantling, we level the surfaces adjacent to the future structure and clean them of foreign contaminants.
- We perform a test installation of the block in the opening, temporarily fixing it. This is necessary to mark the edge of contact between the walls and the window, so that when gluing the tape is hidden behind the outer slopes.
- We measure the window block. In accordance with the obtained dimensions, we cut PSUL for gluing on the top and sides of the frame; we prepare diffuse tape to isolate the area where the molding profile is attached.
- We do the same with GPL-S (internal slopes) and butyl rubber tape (for the window sill profile). The material is measured for each side with an allowance of 10 cm to form corner joints.
- We apply the tape, gradually removing the protective layer from the adhesive surface of the PSUL.
We glue GPL-S to the inside of the window profile using a strip of double-sided tape (we do not remove the protective film from the main adhesive surface at this stage). - We fix the window in the opening. We wedge it, and then fasten it with anchors or using mounting plates. We fill the seams with polyurethane foam.
- After complete polymerization of the foam and rough preparation of the inner surface of the walls, we fix GPL-S on them (remove the protective paper and glue it to the slopes).
It should be remembered that the tape must be selected in accordance with weather conditions. When working in winter, it is possible to glue only material intended for use in low temperature conditions.
Useful video on the topic:
Where is it used?
Butyl tape is in demand in construction to solve the following problems:
- sealing joints, gaps, joints, perimeters in structures made of different building materials;
- hermetic sealing of seams and cracks;
- sealing of double-glazed windows, door frames, facades;
- repair of roofing, pipeline parts, drains;
- insulation of vehicles and equipment with metal casings, etc.
Butyl tape is indispensable if roofing or gutters need to be repaired.
Adhesive surface of vapor barrier tapes
All vapor barrier films are equipped with an adhesive strip. The absence of the need to apply glue yourself eliminates the possibility of poor-quality fastening of the tape, as well as moisture getting into the thermal insulation environment.
The material for the adhesive layer of the vapor barrier tape is butyl rubber or, in cases with high humidity, metal. Tapes containing rubber film are used for windows, balconies and doors in almost all types of premises. The basis of such a vapor barrier is non-woven fabric.
Types of butyl tape
Butyl tape differs in the composition of the surfaces, in how much of its area is occupied by the adhesive layer, and in standard sizes. Each variety has its own scope of application. Let's look at some of them.
- Liplent O is a black or beige tape with a double-sided butyl rubber surface , which can be used in difficult cases, for example, when assembling sandwich panels or for insulating culverts. Available in a wide range of lengths (from 6 to 24 m) and widths (from 10 to 1000 mm).
- Liplent Mf is a tape with a one-sided butyl layer , backed with heat-reflecting aluminum foil . It is optimally suited for repairing metal roofs and installing aluminum translucent structures. Standard width is from 40 to 500 mm, custom sizes are possible.
- Liplent Pf - instead of aluminum foil, it contains foil-coated polyethylene foam . The second side is completely covered with butyl rubber. This variety is oil and gasoline resistant, therefore it is used in the automotive industry, for insulating doors, hoods, roofs, and undercarriages, as well as for installing window and door units. The tape can have a thickness of 2, 4 or 8 mm.
- two narrow adhesive butyl strips on one side , for gluing to the frame of the window block and to the lower slope. The tape is intended for external sealing of window drains and balcony doors. Width – from 25 to 450 mm.
- Liplent Mfts - may have a butyl rubber layer on one or both sides. It is made on the basis of aluminum foil or metallized film , reinforced with durable non-woven material. It is used inside when installing window structures, as a hydro- and vapor barrier layer. Roll width – from 40 to 400 mm.
Liplent O (cord) – a narrow tape with a double-sided butyl surface for sealing difficult areas
A wide range of butyl tapes allows you to choose a sealing material to solve a variety of problems. In terms of strength and durability, butyl rubber outperforms the common bitumen. Another obvious advantage is the absence of odor and harmful fumes, which is especially valuable in residential construction.
Description and characteristics
Butyl rubber tape is a traditional insulating and sealing material that performs the functions of sound insulation, waterproofing and vapor barrier. The tape has a length of up to 30 mm and a width of 70 to 250 mm, made of elastic polymer with an adhesive layer.
The product has the following characteristics:
- high resistance to temperature changes;
- resistance to ozone, acid-containing solvents and other chemicals;
- protection from moisture;
- durability;
- resistance to environmental influences.
The performance of butyl rubber tape is in the temperature range from -55°C to 100°C. Manufacturing technology and the developed composition make it possible to achieve maximum strength, elasticity and long service life of the material, regardless of operating conditions. Rubber tape consists of a material that retains its properties at different temperatures over time.
Features of the use of butyl rubber tapes for windows "Liplent"
The manufacturer clearly distinguishes window tapes to protect the mounting layer from the outside and from the inside.
For the outer layer the following were developed:
- “Liplent SD” is a tape that repels moisture, but allows steam accumulated in the polyurethane foam to pass through;
- “Liplent Pv” is a tape backed with gas-filled polyethylene foam, which protects against atmospheric moisture and also increases the level of heat and sound insulation of the window.
Cracks in the polyurethane foam nullify all efforts and financial investments in expensive double-glazed windows. Through them, street noise enters the house, and heat escapes outside. Window tapes “Liplent SD” and “Liplent Pv” significantly increase the heat and sound insulation characteristics of window structures and effectively solve these problems.
The area under the low tide is covered with Liplent Pv tape.
Why do you need Liplent window tapes?
Practical, durable and aesthetically pleasing plastic windows are replacing wooden windows from the market. But they also have a “weak link” - polyurethane foam, which is used to seal the joints in the places adjacent to the opening. Under the influence of atmospheric moisture, ultraviolet radiation from the outside and steam from the inside, it cracks and the window loses its airtightness.
Tapes for Liplent windows are designed to protect the most vulnerable areas of the glass unit and maximize the service life of the joints. The line includes varieties for indoor and outdoor use, but they also have something in common - a self-adhesive butyl rubber layer, as well as an easy application method.
Installation of vapor barrier tape
Installation of vapor barrier tape is carried out in several stages:
- Preparation and processing of window/door openings. The surface of the opening walls and the frame must be cleaned of dust. The less contamination, the more reliable the thermal insulation.
- It is necessary to mark the line for attaching the vapor barrier tape. To do this, you need to place the frame in the opening without securing it, and visually calculate where you need to draw the line.
- After this, the frame is removed back, and the vapor barrier strip is glued along the marked lines.
- The paper films covering the adhesive part are removed last.
- The installation of the vapor barrier tape is completed by covering the seam with foam.
- If it is necessary to install the tape in the area under the window sill, then it is done at the very end.
How is a vapor barrier installed?
When installing a vapor barrier tape, subsequent application of plaster may be required. In this case, the open part of the tape should be made of a material that provides the best adhesion of the insulating strip and the decorative coating to each other.
Installing a vapor barrier tape under the window sill
The vapor barrier tape must be glued around the perimeter of the frame in a continuous layer, without gaps. Optimal thermal insulation is facilitated by the selection of finishing materials adjacent to the insulation, which have acceptable moisture permeability in this case.
