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Koster KSK SY 15 - Bitumen Post Applied Sheet Membrane

Verified by manufacturer 3 months ago

Delta Membrane Systems Ltd

Bitumen post applied, cold self adhesive bitumen membrane with HDPE top foil (moisture barrier type A and ground water barrier type T)

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Application

Suitable for:

  • Waterproofing horizontal and vertical surfaces of structures and/ or structural members according to DIN EN 18533 such as foundation plates, wet rooms, basement floors, balconies, terraces, etc.
  • Waterproofing concrete structures or their elements in contact with the ground, to protect against the ingress of moisture and possibly dissolved salts (e.g. chloride).
  • Protection against radon gas.
  • Foundation plates
  • Structural members
  • Vertical retaining walls
  • Floor slabs from inside
  • Basement floors
  • All underground structures
  • Tunnels
  • Bridges
  • Balconies
  • Terraces
  • Wet rooms

Description

Cold self adhesive bitumen membrane with HDPE top foil (moisture barrier type A and ground water barrier type T).


Features and benefits:

  • KÖSTER KSK SY 15 consists of a highly tear resistant, two-layer cross laminated polyethylene foil with a plastic bitumen / rubber adhesive and sealing compound.
  • It is cold applied and therefore no hot air or propane gas welding is required for application.
  • Due to its high ductility it can easily be applied to difficult details.
  • The sealing membrane is highly flexible, immediately waterproof, resistant to driving rain, and crack bridging.
  • Cold applied, self-adhesive.
  • No hot air or propane gas welding is required.
  • Immediate waterproofing effect.
  • Uniform waterproofing layer.
  • Highly flexible due to rubber-bitumen basis.
  • Solvent-free.
  • Fast application due to the size of the membrane (1.05 m).
  • Age resistant.
  • Laminated on the top side with a highly tear resistance foil.
  • Radon-proof tested.
  • Vapour tight μ ≤ 130 000.
  • Can be applied to all mineral substrates as well as plastic and metal.
  • Self-sealing in case of small damage.
  • High seam resistance against water pressure and water vapour.
  • No need for use of external adhesive or mastics to ensure lap bonding or substrate adhesion.
  • Factory applied adhesive on the overlap areas improves security.
  • Less time needed for installation as product is ready to use.
  • Reduced material and labour costs on site.
  • Packaging: 1.5 x 1.05 x 20 m, (21 m² roll).
  • Pallet content: 15 rolls (315 m²).
  • Pallet size: Euro Pallet (1.2 x 0.8 x 0.14 m).
  • Safety: observe all governmental, state, and local safety regulations when installing the material.

General information

Color

Black

Material

Guidance for specification option:

Cold self adhesive with HDPE top foil.

Material Class: Cold self-adhesive membrane.

Length

1050 mm

Width

20000 mm

Warranty description

Ten year

Uniclass

Pr_25_57_08_08 Bitumen sheetsPrimary

CAWS

J40/190 Self-adhesive bitumen damp proofing/ tanking

J40/40 Self-adhesive bitumen membranes

J40/180 Self-adhesive bitumen membranes

J40/45 Self-adhesive bitumen gas retardant damp proofing/ tanking

Specification data - Bitumen sheets

Standard

To BS EN 13969: 2004 + A1 2006.

Performance characteristics

-

Manufacturer guidance

  • System 2 + CLASS E (system 3 for the reaction to fire).
  • Waterproofing against max. load condition: Pressurized Water.
  • Time until rainproof: Immediately.
  • Chemical resistance: Good.
  • Tested to be radon proof: Yes.
  • Permeability to vapor diffusion: Very low.
  • UV-resistance: not long term resistant.
  • Crack bridging: high.



  • Flammability: Class E.
  • Tensile strength: lengthwise/crosswise - 265 ± 55 N/50 mm.
  • Elongation at break: lengthwise/crosswise - 255 ± 60 %.
  • Resistance to static loads: 10 kg tight.
  • Resistance to impact loads: 20 cm (hard underlayment).
  • Resistance to impact loads: 75 cm (soft underlayment).
  • Waterproof at 400kPa pressure, passed.
  • Resistance of the joint seams to shearing according to DIN EN 12317-1 (MDV):130 ± 30 N/50 mm.
  • Resistance of the joint seams: lengthwise/crosswise according to EN 12310-1(MDV) 175 N ± 20 N.
  • Colt bending properties according to DIN EN 1109 at 15 °C free of cracks.
  • Straightness test: passed.
  • Working temperature (Air/substrate): + 5 °C to + 35 °C.
  • Thickness according to DIN EN 1849-1(MDV): 1.5 mm.
  • Length according to DIN EN 1848-1: 20 m.
  • Width according to DIN EN 1848-1 1.05 m.
  • Resistance against artificial aging according to DIN EN 1296 and 1928, procedure. B (test pressure 60 kPa) passed.
  • Resistance against chemicals according to DIN EN 1847 and 1928 procedure B (Test pressure 60 kPa) 10 % NaCl passed.
  • Lime milk test passed
  • 6 % Sulfuric acid passed
  • Resistance to water vapor diffusion μ (MDV): 130,000.
  • Butt weld: > 130 ± 30 N / 50 mm.
  • 10 cm overlap: > 200 ± 30 N / 50 mm.
  • MDV = manufacturer's specifications within tolerance.

Form

Post applied sheet membrane.

Material

-

Carrier material

High-density polyethylene (HDPE).

Bitumen modification

Adhesive-modified bitumen.

Root inhibitor

Metal foil.

Thickness (minimum)

1.5 mm.

Guidance for specification option:

Thickness according to DIN EN 1849-1 (MDV).

Substrate

-

Manufacturer guidance

  • The substrate has to be clean, dry, even, and without sharp corners, ridges, gaps, or voids.
  • It can be mineral, polystyrene, or wooden.
  • In case of basement walls made of masonry, the joints have to be closed flush.
  • As a primer a thin coat of KÖSTER KBE Liquid Foil is applied to the substrate (Consumption: approx. 250 – 500 g / m²).
  • Alternatively, KÖSTER Primer BL (Consumption approx. 0,25 - 0,4 kg / m²),
  • KÖSTER Bitumen Emulsion, KÖSTER Bitumen Primer (on old bituminous layers), or KÖSTER Polysil TG 500 can be used for priming.
  • The priming layer must be allowed to dry completely.
  • According to Norm a primer is not necessarily required on floor areas.
  • Apply the membrane on the same day.
  • In case of strongly absorbent substrates, (e. g. porous concrete), a second primer coat may be necessary.
  • Solid, well consolidated horizontal substrates may not require a primer.
  • At wall / floor, wall / wall junctions and on offset foundations, fillets with a leg length of 4 – 6 cm must be installed using a cement mortar such as KÖSTER Repair Mortar.
  • It must be fully cured before the KÖSTER KSK SY 15 membranes are installed, (min. waiting time: 24 hours).

Waterproofing

Horizontal waterproofing.

Guidance for specification option:

  • On top of the fillet, an approximately 30 cm wide strip is applied as corner reinforcement.
  • Apply the vertical and horizontal layers on top of the strip.
  • Roll out membranes or pre-cut pieces in a length of approx.
  • 50 – 80 cm, remove approx. 30 – 50 cm of the backing paper at the beginning of the membrane and press the exposed adhesive layer onto the substrate beginning from the middle.
  • Avoid trapping air and creating creases.
  • Pull the backing paper through from under the roll and pull it off while unrolling the membrane.
  • Firmly press the applied membranes onto the substrate.
  • Use the KÖSTER Leister Hand Pressure Roller (40 mm) on the overlaps and edge areas.
  • Overlap the membranes a minimum of 5 cm, national and local guidelines may vary.
  • Connections to metal are achieved using a strip of KÖSTER Fix-Tape 10 ALU.
  • Connections to vertical interior walls are made with KÖSTER Butyl Fix-Tape Fleece to act as a plaster base.
  • All inside corners are to receive a fillet.
  • Cover roofs after waterproofing with a geotextile and cover with a screed or round gravel 16 / 32, 5 cm thick.

Vertical waterproofing.

Guidance for specification option:

  • All interior and exterior corners are reinforced by applying pre-cut membrane pieces approximately 30 cm wide.
  • Remove the backing paper just before applying the membrane to the surface.
  • For waterproofing of the especially demanding internal and external corners use specially cut pieces of membrane.
  • Refer to the KÖSTER KSK application guidelines on the packaging for details.
  • Waterproof wall surfaces beginning approx. 30 cm above ground level, proceeding downwards to the wall floor junction and on to the side of the foundation.
  • Pre-cut the membrane to the required length.
  • Apply the membrane by removing the protective paper and pressing the membrane onto the substrate.
  • Overlap the edge of the previously applied membrane by a minimum of 5 cm.
  • All overlapping areas of the membranes must be firmly pressed together using a KÖSTER Leister Hand Pressure Roller (40 mm).
  • Remove the backing paper from the self-adhesive edge before applying the next membrane.
  • In order to avoid water infiltration behind the membrane, seal all exposed edges of the waterproofing layers as well as around pipe penetrations and other junctions and endings with KÖSTER KBE Liquid Film.
  • Mechanically fix the upper ends of the membranes with large headed zinc coated nails, (5 pieces / m), or with a fixing profile.
  • In case of rough substrates or porous concrete, a second coat may be needed after the first coat has fully dried.
  • Embed KÖSTER Glass Fiber Mesh into the KÖSTER KBE Liquid Film around pipe penetrations.
  • Protect the KÖSTER KSK SY 15 with KÖSTER Protection and Drainage Sheet 3-400 against damage due to backfilling.
  • A layer of XPS Insulation (minimum 30 mm) also provides protection against backfill.
  • The construction pit should be backfilled immediately after full cure of the KÖSTER KBE Liquid Film.
  • Horizontal areas must be covered within two weeks of their application.

Storage

Manufacturer's standard.

Guidance for specification option:

  • Store rolls standing upright.
  • Do not place pallets on top of each other Protect from pressure and moisture.
  • Do not remove the roll from its package until the moment of application.
  • Do not expose rolls to low temperatures or direct sunlight.
  • Avoid keeping the product outside for long periods when the external temperature is higher than +28°C.
  • Do not leave the roll outside overnight.
  • If possible use the entire product which has been removed from its original packaging in the same day.
  • Do not apply on dirty, wet, dusty or humid surfaces
  • Do not apply when the weather is cold or humid and/or when the substrate is humid (the temperature of the areas in which the various materials are in contact should be at least + 10°C).

Sustainability data

Recyclability

No

Recycled content

As defined in clause 7.8 of BS EN ISO 14021

0 %

Literature

Koster - The Green Pages of Construction Chemicals

Koster - The Green Pages of Construction Chemicals

Delta Detailing Brochure

Delta Detailing Brochure