Window replacement on timber beams (prefabricated timber construction / timber frame house building
If windows were installed directly on a smooth timber beam as the supporting surface, the ISO-BLOCO HYBRATEC multi-functional tape can be applied directly when the windows are replaced. This multi-functional 3-layer tape then expands against the frame after fitting. The slow expansion behaviour and large joint function area makes this MF-1 tested multi-functional joint sealing tape excellent for this type of renovation work.

In combination with ISO-BLOCO FILLER
In old 2-leaf brick constructions with small air cavities between the facing shell/brick leaf and supporting masonry, there is often no thermal insulation in the air cavity. During renovation work, a large amount of expanding foam is introduced to close off the air cavity around the window. With our ISO-BLOCO FILLER masonry filler, in such cases the cavity can be filled and a sealing tape can be provided for the external wall rebate. On the other side, it creates a sealing surface for a multi-functional tape such as ISO-BLOCO HYBRATEC. The ISO-BLOCO FILLER is quick and easy to apply in the air cavity, saving both time and money. Acrylate or silicone-based sealants are recommended for the final jointing work.

In combination with the ISO-TOP WINFRAMER „TYPE 3“ IN FRONT OF WALL INSTALLATION SYSTEM
Where there are larger air cavities in 2-leaf masonry with a brick facing, the ISO-TOP WINFRAMER „TYPE 3“ IN FRONT OF WALL INSTALLATION SYSTEM can be retrospectively bonded and screwed into the air cavity during renovation work. The system profiles then form both the substrate for sealing with the ISO-BLOCO HYBRATEC multi-functional tape and a supporting surface for mechanically fixing the window in the air cavity.

Window replacement on timber beams (prefabricated timber construction/timber frame house building
If windows were installed directly on a smooth timber beam as the supporting surface, the ISO-BLOCO ONE multi-functional tape can be applied directly when the windows are replaced. This multi-functional 3-layer tape then expands against the frame after fitting. The slow expansion behaviour and large joint function area make this MF-1 tested multi-functional joint sealing tape excellent for this type of renovation work as it seals all 3 required sealing levels in a single work step.

In combination with ISO-BLOCO FILLER
In old 2-leaf brick constructions with small airgaps between the facing shell/brick leaf and supporting masonry, there is often no thermal insulation in the air cavity. During renovation work, large amounts of expanding foam is introduced to close off the air cavity around the window. Our ISO-BLOCO FILLER masonry filler can be used in such cases both to fill the cavity and to provide a sealing tape for the external wall rebate. On the other side, it creates a sealing surface for a multi-functional tape such as ISO-BLOCO ONE. The ISO-BLOCO FILLER is quick and easy to apply in the air cavity, saving both time and money. Acrylate or silicone-based sealants are recommended for the final jointing work.

In combination with the ISO-TOP WINFRAMER „TYPE 3“ IN FRONT OF WALL INSTALLATION SYSTEM
Where there are larger air cavities in 2-leaf masonry with a brick facing, the ISO-TOP WINFRAMER „TYPE 3“ IN FRONT OF WALL INSTALLATION SYSTEM can be retrospectively bonded and screwed into the air cavity during renovation work. The system profiles then form both the substrate for sealing with the ISO-BLOCO ONE multi-functional tape and a supporting surface for mechanically fixing the window in the air cavity.

ISO-BLOCO MULTI-FUNCTIONAL TAPE is a versatile special joint sealing tape with excellent functionality. Seals window and door joints, making them air tight and impermeable to driving rain. At the same time, ISO-BLOCO MULTI-FUNCTIONAL TAPE offers very good thermal insulation properties over the entire installation depth.

For the first time, this pre-compressed multi-function joint sealing tape makes the convenient and controlled pre-fitting of a 3-level seal possible in a workshop environment. This is guaranteed by a sturdy tear-off cover which ensures that the tape itself remains compressed for as long as you require even after the roll itself has been opened. The expansion of the joint sealing tape is only activated after the windows have been fitted. There's no better way to work!

Sealing of the second sealing level beneath windowsills
ISO-CONNECT VARIO XD offers particularly high tear resistance and can remain exposed to UV for up to one year. With its excellent durability and long-lasting outdoor weathering resistance, this polymer fleece foil is an ideal and reliable seal for window and door elements in metal, window and facade constructions. With its particularly high mechanical strength the foil can be used, for example, during renovation work in the facade, on gable windows behind wood panelling and in the windowsill area.

The variable-humidity foil is equally suited to sealing internal and external joints – in outdoor applications as weather protection in excess of 1,050 Pa and, for indoor use, as an airtight layer to separate the room and outdoor climates. The foil is also very good for renovation work to improve energy efficiency.

The special foil reacts to different seasonal temperature gradients by variably adapting its sd value. The sharp vapour diffusion gradient creates a moisture-regulating functional mechanism which results in a high drying-out effect in the window connection joint all year round. Moisture trapped in the structure can escape in both directions, effectively preventing moisture damage and health risks from mould growth.

Environmentally friendly primer for mineral and fibrous surfaces
Old surfaces in existing buildings generally need pre-treatment in the form of a primer to give new sealants a good bonding surface. Various primers are used for this purpose.

ISO-TOP BLUE PRIMER is a primer based on an aqueous acrylate polymer dispersion. It was specially developed to improve the adhesion properties of acrylate, bitumen, butyl and hybrid polymer adhesives, and of adhesive tapes on mineral surfaces. ISO-TOP BLUE PRIMER can also be used on fibrous surfaces such as soft fibreboard, wood materials, timber and other general construction materials.

Connection of vapour barrier foils in the roof or wall area in prefabricated timber constructions
The installation of new rooflights or other windows in the roof area requires the dormer to be connected to the roof’s vapour barrier foil. This connection to the vapour barrier can be correctly implemented with ISO-TOP POWER TAPE.

ISO-TOP POWER TAPE is a soda kraft paper with a highly adhesive acrylate emulsion adhesive on one side.

Connection of vapour barrier foils in the roof or wall area in prefabricated timber constructions
The installation of new rooflights or other windows in the roof area requires the dormer to be connected to the roof’s vapour barrier foil. This connection to the vapour barrier can be correctly implemented with ISO-TOP FLEX-TAPE.

ISO-TOP FLEX-TAPE is an LDPE foil equipped with a very strong special adhesive on one side.

High-quality cartridge applicator press for adhesives and sealants
ISO-TOP EASYPRESS PRO is a high-quality, professional manual press for applying adhesives and sealants in 310 ml cartridges. The applicator press is equipped with a rotating barrel, strong pusher plate and rubber-coated handle.

Sealing of interior connection joints
ISO-TOP ACRYLSEAL F is a high-quality, resilient and flexible single-component acrylate sealant based on an acrylate dispersion. The highly adhesive and flexible sealant is suitable for airtight internal sealing of structural joints.

ISO-TOP ACRYLSEAL F is also the right choice both for joint sealing and for disguising damage when windows are replaced. It can be easily applied in the joint and then blended onto existing surfaces. It is also easy to match the colour on the sealant surface using conventional interior wall paints. And as the joint sealant dries by giving off water, the drying effect is free from harmful solvents.

Permanently reliable sealing of internal and external joints
ISO-TOP FACADE SEAL is an almost odourless spray-on hybrid sealant based on hybrid polymer. It is ideal for sealing moving joints on the outside of buildings owing to its colour-fastness and resistance to weathering and UV.


ISO-TOP FACADE SEAL adheres without primer even on slightly damp surfaces, cures blister-free and can be easily painted over using water-based paints.

ISO-TOP FACADE SEAL is easy to apply, whatever the weather. The sealant can even be applied to damp surfaces. It is expressly formulated for application in the rain; even at very low temperatures, ISO-TOP FACADE SEAL will not be damaged during application or drying.

Excellent adhesion to all standard substrates combined with simple and universal application make ISO-TOP FACADE SEAL ideal for use in the repair and renovation of existing buildings.

Sealing against non-pressurised water & sealing in prefabricated buildings and solid construction as the second sealing level
ISO-CONNECT OUTSIDE EPDM is a weather-resistant sealing foil that can be used for the external sealing of window and door elements in facade constructions.

If patio doors or lift-and-slide elements are replaced during renovation work, the bottom connection which seals against standing water also needs to be replaced. This highly flexible elastomer sealing foil with its high mechanical strength is ideal for this task. In addition to its mechanical stability and tensile strength, the other outstanding characteristic of ISO-CONNECT OUTSIDE EPDM is its extreme flexibility and stretchability.

Round profile seals as plugging and backfill materials for spray-on joint sealants and cavities
ISO-ZELL PE AND PUR CORD is used in combination with joint sealants. This is as prescribed by the DIN 18540 standard and IVD datasheet no. 9. During renovation work, the connection joint is often filled with spray foam to provide good thermal insulation and soundproofing. After a few minutes, the slightly dried foam is pushed back with a PE cord sufficiently to make a grooved opening in which a sealant joint can be created. Backfill cords limit the filling depth and create the correct size of joint and a tapered shape. When used as a filling profile for sealing compounds, 3-flank adhesion is effectively avoided. ISO-ZELL PE AND PUR CORD can be used in both internal and external applications.

Aluminium tube press with nylon union nut and rubber-coated handle for construction adhesives and sealants.
The ISO-TOP PRESSFIX aluminium tube press is equipped with a nylon union nut and rubber-coated handle for a safe grip and comfortable handling. It is especially suitable for applying construction adhesives and sealants in tubular bags up to 600 ml.

Backfilling of sealant joints in the lower connection area with continuous windowsills
In old buildings there are often continuous windowsills. These are sometimes left in place even though there are no thermal benefits. In this case, the window is then sealed without a windowsill connection profile and the frame is placed directly onto the stone sill. This can then be sealed underneath with ISO-ZELL PE-TAPE or FIX-TAPE. These versatile sealing and padding tapes are airtight and impermeable to driving rain. The internal and external sealing are done with sealants.

Sealing against non-pressurised water & sealing in prefabricated buildings and solid construction as the second sealing level
ISO-CONNECT EPDM SEALING CORNERS are especially suitable for the bottom connection area in buildings.

Corners at the bottom base point of balcony doors, patio doors and lift-and-slide systems are often the Achilles heel with respect to sealing. Any leaks create a significant risk of allowing the uncontrolled ingress of water into the structure. These prefabricated EPDM sealing corners create a fast and reliable seal in the corner areas.

Sealing against non-pressurised water & sealing in prefabricated buildings and solid construction as the second sealing level
The ISO-CONNECT EPDM SEALING TRAY was designed for the professional external sealing of bottom door and window connections and can be used for all types of window. It is a sealing system made from highly flexible EPDM which can be used both as the second sealing level beneath windowsills and in the vicinity of threshold connections for floor-level windows and doors.

The main benefit lies in the controlled removal of water or condensation which can collect in the bottom part of windows and doors and beneath aluminium and stone windowsills. In the critical corner areas, the pre-shaped, high-density vulcanised corners ensure a 100% seal.

The ISO-CONNECT EPDM SEALING TRAY is individually produced to precise dimensions, saving both time and money at the installation stage. All corner projections and upstands that are needed for sealing at the bottom base point are taken into account. It is especially ideal because the fitter does not need to cut or bond anything on the tray. All the corners are 100% tight and a high quality seal is quickly created for the bottom base point of the floor-level element or in the windowsill area.

Sealing against non-pressurised water & sealing in prefabricated buildings and solid construction as the second sealing level
ISO-CONNECT KSKSEAL is an all-over self-adhesive sealing membrane made of polymer-modified bitumen with a flexible yet tearproof HDPE foil. It is used for the external sealing of floor connections and permanently protects components in contact with the ground against non-pressurised water (DIN 18533) for sealing thresholds, ground moisture and non-accumulating seepage water.

ISO-CONNECT KSKSEAL is therefore recommended when replacing floor-level elements on patios and balconies. The membrane seals against standing water and protects the bottom part of the doors against unusual water loads. These sealing levels always have to be replaced during renovation work. If ISO-CONNECT KSKSEAL has already been used, the new sealing membrane will adhere very well to the existing membrane.

For pre-treating substrates for ISO-CONNECT KSKSEAL sealing membranes
ISO-TOP KSKSEAL PRIMER is a solvent-free, high-quality primer designed to improve adhesion and based on a bitumen emulsion for ISO-CONNECT KSKSEAL sealing membranes.

ISO-TOP KSKSEAL PRIMER is suitable for substrate preparation on cellar walls, floor plates, foundations, balconies, underground garages and patios; it is also used on familiar and suitable mineral substrates before sealing with ISO-CONNECT KSKSEAL.

Window renovation

ISO-BLOCO 300 „PREMIUM EDITION“ is used in window renovation in the rebate masonry to create the weather protection level. It is often applied in solid constructions and brick facades and when renovating the entire building envelope with an external wall insulation system.

This joint sealing tape, which is resistant to driving rain in excess of 300 Pa, offers reliability during installation as it can be used in a wide range of joints. One particular benefit is that it does not have to be covered with spray-on sealants. In building renovations, joints are often covered with sealant not by the window fitter, but afterwards by a separate “sealing specialist”. This is not the case if ISO-BLOCO 300 „PREMIUM EDITION“ is used – the window fitter can leave the site “finished”.

For filling the air cavity and for using a multi-functional tape in the connection area
The multi-functional insulating and sealing system ISO-BLOCO FILLER was specially developed for window renovation in double-leaf constructions. In double-leaf walls, the window is seated in the insulation level, between the inner and outer masonry. For a renovation, the new window is fitted back in the same place. The air cavity, which acts as thermal insulation, must be filled with a sealing product in order to meet energy efficiency standards.

In the past, there was only expanding foam available for this purpose. This often proved problematical because, for efficient sealing, considerable amounts of foam are needed and the product’s long drying time made it impossible to quickly resume working.

These problems can be avoided with ISO-BLOCO FILLER. The insulation and sealing system is installed directly in the opening between the inner and outer wall leaf before the window is fitted. It fills the gap and fixes into itself place as a permanent clamping effect is guaranteed by the material’s high elasticity. The material fills the gap airtight like a finishing layer, thus forming an optimum base for installation of the window.

Combined with strips of joint sealing tape, ISO-BLOCO FILLER also provides the rebate seal. After installation, the joint can be filled with a PU expanding foam such as ISO-TOP ELASTIFLEX or ISO-TOP THERMFOAM „BLUE LINE“ or it can be sealed with a multi-functional tape such as ISO-BLOCO HYBRATEC. The gap to the old plastered surface that remains on the inside is closed with sealant. ISO-TOP SILICONE F/FT or ISO-TOP SILICONE A/AT is suitable for external use, while ISO-TOP ACRYLSEAL F is ideal for internal use.

Filling of the functional level & backfilling sealants in renovation work

ISO-BLOCO HF is an impregnated and pre-compressed sealing strip which can be used in window connections as an insulating layer in the functional area or as insulation in connection joints between structural elements. It is suitable for sealing against draughts, heat loss, dust and noise.

This thermal insulation tape is quick and easy to install, expands automatically and is highly flexible. ISO-BLOCO HF is especially suitable for interior renovation work as there is no risk to fitters and residents from the off-gassing of toxic components. The sealing tape is isocyanate-free, unlike many PUR foams.

Low isocyanate PUR spray foam for a healthy living environment – no training required
The ISO-TOP THERMFOAM „BLUE LINE“ PUR foam is very suitable for renovation work since neither the installer nor the customer is exposed to high levels of isocyanate as is the case with conventional PUR spray foams. As it has a very low free isocyanate content of less than 0.1% making it healthy to use, ISO-TOP THERMFOAM „BLUE LINE“ can still be used without training after 24.08.2023.

The level of potentially harmful free isocyanates is just 1/1000th of that of conventional PUR spray foams. This protects not only the user, but also the residents who are normally at home while windows are replaced during renovation work.

Highly elastic PUR spray foam - insulation level and sound reduction area
In renovation work, PUR spray foam is the number 1 choice for filling cavities. ISO-TOP ELASTIFLEX is especially suitable for this as it remains flexible and applies little pressure. This is an advantage when foam-filling roller shutter housings (renovated housings in old lintel boxes) and when foam-filling beneath windowsills.

The highly elastic special PUR spray foam is roughly three times more flexible than conventional in-situ PUR foams. While comparable foams quickly cure to form rigid products that cannot accommodate relatively large movements of joints, ISO-TOP ELASTIFLEX remains permanently elastic in the functional area.

ISO-TOP ELASTIFLEX is very easy to dispense accurately and is ideal for filling the connection joint. In the top connection, where replacement roller shutter housings are often fitted during renovations, the easy to dispense foam prevents malfunctions of the roller shutter structure due to excessive pressure.

Dispensing gun with non-stick coating for PUR spray foams and PUR spray cleaners
ISO-TOP GUN is suitable for all standard PUR spray foams and PUR cleaner cans with screw thread. The high-quality, fully non-stick coated dispensing gun is equipped a with 4-fold seal for optimum handling and particularly easy dispensing needle adjustment with end stop function. The rubber-coated handle and trigger guarantee a safe grip.