Product Data Sheet Show all documents

Sarnacol®-808

ADHESIVE FOR SARNAFIL® FELT BACKED ROOF WATERPROOFING MEMBRANES

Sarnacol®-808 is a 1-part neoprene based adhesive for fully adhered system with felt backed membrane.

  • Proven performance over decades.
  • Single component, ready for use
  • Application by roller
  • Good adhesion to different substrates
  • Suitable for solid, clean and dry surface
Product Data Sheet Show all documents

Usage

Sarnacol®-808 is used to bond felt backed membrane onto the roof substrate in fully system. Bonding substrates
  • Concrete, lightweight concrete, plaster
  • Oriented fibre strand boards, plywood panels
  • Fibre cement boards
  • Steel panels
 

Advantages

  • Proven performance over decades.
  • Single component, ready for use
  • Application by roller
  • Good adhesion to different substrates
  • Suitable for solid, clean and dry surface

Packaging

18 kg / pail

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

JC/T 863  Adhesives for polymer waterproof sheets
Product Information

Chemical Base

Neoprene

Shelf Life

12 months from date of production in unopened, undamaged and original packaging.

Storage Conditions

Product must be stored in dry conditions within 0°C - 30°C environment, do not expose to direct sunlight or frost, and keep away from flames.
System information

Compatibility

Sarnacol®-808 is not compatible with PVC membrane, bitumenious products, XPS board.
Technical Information

Shear Strength

Standard Condition

≥ 2.5 N/mm

JC/T 863

Retention after heat treatment (80°C,168h)≥ 70%

GB/T 3512

Retention after alkaline treatment (10%Ca(OH)2,168h≥ 70%

GB/T 1690

 

Application

Application Information

Ambient Air Temperature

≥ +5 °C

Substrate Temperature

≥ +5 °C
Application steps

SUBSTRATE QUALITY

The substrate must offer sufficient strength and adhesion to resist the forces generated by wind suction.

SUBSTRATE PREPARATION

The substrate must be firm, clean, dry or slightly moist, free from oil, grease, dust, stripping agents, standing water, bitumen residue and loose friable particles.

APPLICATION

Strictly follow installation procedures as defined in,method statements, application manuals and working instructions which must always be adjusted to the actual site conditions.

General information

Sarnacol®-808 must be stirred carefully before use. Keep adhesive container closed whenever adhesive is not being used to prevent surface skinning.
To improve the workability of the adhesive at low temperatures, the closed container can be placed in warm water (max. +40 °C).

 

Bonding to PVC membrane

Apply adhesive onto the substrate and PVC backside felt layer. Do not pour out the adhesive directly onto PVC membrane.

Do not apply the adhesive to an area greater than can be covered within 15 minutes.

Do not pour out the adhesive and roll in a second stage.

Once the adhesive surface has become 'tacky', apply the membrane onto the adhesive.
Press down firmly on the membrane using a suitable pressure roller such as a water-filled, or heavy steel roller 40 – 50 kg.

Bonding to very absorbent substrates

Apply 2 coats of adhesive. The first coat ~800 g/m2. Allow the adhesive to dry completely. Apply a second coat ~400 g/m2 max.

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