Wykamol Corner Strip Tape

Q) What is Wykamol Corner Strip Tape used for?

A) Wykamol Corner Strip Tape is used to create watertight seals within Wykamol cavity drain waterproof membrane systems, especially at details where membrane sheets alone cannot provide a complete seal. It is commonly used on wall-to-floor junctions, internal corners, membrane overlaps, butted joints, service penetrations and shaped areas where the membrane has been cut around obstacles. In basement waterproofing and cellar conversion work, these areas are often the most vulnerable points in the system. Wykamol Corner Strip Tape bridges these joints and links adjoining membrane sections together, helping maintain a continuous waterproof layer and reducing the risk of water tracking through gaps, edges or weak detailing points.

Q) How does Wykamol Corner Strip Tape work?

A) Wykamol Corner Strip Tape works by bonding over vulnerable membrane joints and junctions to form an impervious butyl seal. The tape is made from a heavy-duty self-adhesive butyl rubber compound, which sticks to clean, dry membrane surfaces and remains flexible enough to follow corners, laps and small surface irregularities. Once pressed firmly into position, it connects separate membrane areas and helps stop water, air and moisture movement through the joint. This is important because cavity drain membrane systems rely on continuous detailing as much as the main membrane sheet itself. If joints, corners or penetrations are left unsealed, they can become weak points in the overall waterproofing system.

Q) Where should Wykamol Corner Strip Tape be used?

A) Wykamol Corner Strip Tape should be used anywhere within a cavity drain membrane installation where a watertight seal is needed across a joint, overlap, internal corner, wall-to-floor junction or service penetration. It is particularly useful in below-ground waterproofing, basement conversions, cellars and retaining wall systems, where moisture pressure and water ingress risks are higher. The tape can also be used where membrane has been cut, shaped or adjusted around irregular masonry, pipework, steps, recesses or awkward profiles. Its role is to maintain waterproofing continuity where the membrane surface is interrupted. It should always be applied as part of a correctly designed Wykamol waterproofing system, not as a standalone repair for poor detailing.

Q) What size is Wykamol Corner Strip Tape?

A) Wykamol Corner Strip Tape is supplied in 150mm wide x 20m long rolls, with a thickness of 1.2mm. This heavy-duty size gives the tape enough width and body to cover demanding waterproofing details such as wall-to-floor junctions, membrane overlaps, butted joints and internal corners. The 150mm width is useful because it allows the tape to bridge across both sides of a joint or junction with a generous contact area, helping improve the overall seal. The 1.2mm thickness gives a robust butyl layer that can conform to minor irregularities while still providing a substantial waterproofing detail. This makes it well suited to below-ground membrane sealing work.

Q) How do you apply Wykamol Corner Strip Tape at a wall-to-floor junction?

A) At a wall-to-floor junction, Wykamol Corner Strip Tape is normally folded along its length and positioned so the crease sits tightly into the internal angle between the wall membrane and floor membrane. The backing paper is then removed gradually, and the self-adhesive face is pressed firmly onto both membrane surfaces. This links the vertical and horizontal membranes into one continuous sealed detail. The tape should be applied to clean, dry surfaces and pressed down firmly across its full width to achieve good contact. Care should be taken not to leave air pockets, loose edges or unsupported bridging, as these can reduce the quality and reliability of the waterproof seal.

Q) Can Wykamol Corner Strip Tape be used around pipes and services?

A) Yes, Wykamol Corner Strip Tape can be used around pipes, cables, conduits and other service penetrations where the membrane surface has been interrupted. These areas require careful sealing because any cut through the membrane can become a possible route for water movement if it is not detailed properly. The tape can be shaped and pressed around the penetration to help seal the cut membrane edge and connect it back into the surrounding waterproof layer. On awkward penetrations, the tape must be applied neatly, with full contact around the detail and no loose edges. The membrane surface should be clean and dry, and the tape should be firmly pressed into place.

Q) What preparation is needed before using Wykamol Corner Strip Tape?

A) Before using Wykamol Corner Strip Tape, the membrane surface must be clean, dry and free from dust, loose debris, grease or contamination. Butyl tape relies on close contact with the membrane surface, so any dirt or moisture can reduce adhesion and weaken the seal. On cavity drain membrane installations, a heat gun is often used carefully to dry the membrane and assist adhesion before the tape is applied. The membrane should also be correctly positioned, with joints, laps and junctions formed neatly before sealing begins. Once the tape is applied, firm pressure should be used across the full width to help the butyl bond properly to the membrane.

Q) Can Wykamol Corner Strip Tape be plastered or rendered over?

A) Wykamol Corner Strip Tape is not designed to provide a direct key for plaster or render. Its main purpose is to create a watertight butyl seal, not to act as a plasterable surface. If plaster, render or another compatible finishing material needs to be applied over a sealed joint, Wykamol Mesh Tape should be used instead, or applied over the Wykamol Corner Strip Tape to provide a suitable key. This is an important distinction because plaster or render may not bond properly to the smooth butyl surface. Using the correct finishing detail helps prevent cracking, debonding or failure of the final surface while keeping the waterproof seal intact underneath.

Q) What are the main advantages of Wykamol Corner Strip Tape?

A) The main advantage of Wykamol Corner Strip Tape is that it provides a heavy-duty, flexible and watertight seal across the most vulnerable parts of a cavity drain membrane system. Its butyl rubber construction offers strong self-adhesive bonding, flexibility and resistance to water, air and chemical exposure, making it well suited to demanding below-ground environments. The 150mm wide format gives generous coverage for wall-to-floor junctions, overlaps and internal corners, while the 1.2mm thickness provides a robust sealing layer. It also helps installers deal with irregular details, cut membrane edges and service penetrations, supporting a more continuous and reliable waterproofing system when applied correctly.

Q) What are the limitations of Wykamol Corner Strip Tape?

A) Wykamol Corner Strip Tape should not be used as a substitute for correct membrane design, proper drainage planning or careful waterproofing installation. It is a detailing tape for sealing joints, corners, laps and penetrations, not a complete waterproofing system by itself. It must be applied to clean, dry membrane surfaces, as poor preparation can reduce adhesion and compromise the seal. It should not be stretched, poorly folded, applied over loose contamination or left bridging unsupported gaps. It also does not provide a plaster or render key, so Wykamol Mesh Tape is needed where a finish must bond over the sealed area. Correct application is essential for long-term performance.