SpEC

SpECcord

Closed cell polyethylene foam for sealant support.

SpECcord is a high-quality closed cell polyethylene foam designed specifically as a back-up material for joint sealants. It provides an effective solution in various construction applications, ensuring optimal sealant performance and longevity. Available in multiple diameters, SpECcord is non-hazardous, economical, and easy to install, making it a preferred choice for contractors seeking reliable sealing solutions.
This versatile product resists fungi, moulds, bacteria, and mild chemicals, contributing to its durability in diverse settings.
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Technical Details

SpECcord is utilized in various construction applications for optimal sealing performance. The typical uses include:
  • Joints in or between concrete, blockwork, and brickwork.
  • Concrete, GRC, and GRP precast panels.
  • Metal cladding panels.
  • Aluminium and concrete or blockwork structures.
  • Aluminium members (non-structural glazing).
  • Floor and roof joints (cold applied sealants).
  • Door and window frames.
SpECcord offers numerous advantages that make it an excellent choice for contractors and construction professionals. Its unique properties ensure durability, ease of use, and reliable performance in a variety of sealing applications. The advantages include:
  • Economical.
  • Non-hazardous.
  • Easy to install.
  • Excellent absorption.
  • Good chemical resistance.
  • Acts as a bond breaker, eliminating 3-way sealant adhesion.
  • Not impaired by climatic extremes.
  • Provides minimum strain shape for sealants.
SpECcord is engineered to meet a range of technical specifications, providing crucial data that supports its performance and application versatility:
Diameter Joint Width Coil Length Density Compression Recovery Thermal Conductivity Water Absorption Tensile Strength Compression Temperature Stability Colour
6mm 4 – 5 mm 800m 24.8 kg/cm³ 96.99% 0.0540 W/mK 0.01 g/cm³ 0.204 N/mm² 0.021 N/mm² -10°C to +80°C white/grey
10mm 7 – 8 mm 800m
15mm 10 – 12 mm 360m
20mm 15 mm 200m
25mm 20 mm 100m
30mm 25 mm 100m
40mm 30 mm 100m
50mm 40 mm 100m
Application:
Size Selection:
The diameter of SpECcord should be approximately 25% greater than the width of the joint to ensure a tight fit, providing firm support for the sealant and ensuring the correct sealant profile.

Installation:
After selecting the correct size, install the cord by push-fitting it into the sealing slot using a blunt tool. Avoid using sharp objects or tools that could puncture, cut, or damage the cord.

Watch Points:
– If a primer needs to be used, apply it first and wait for it to dry before installing the cord, as solvents in the primer can damage the cord.
– After installation, ensure that the sufficient depth is maintained for the sealant as recommended by the sealant manufacturer.
– Do not cut the cord into halves or parts, as this will affect its performance.
SpECcord is supplied in convenient packaging options to meet various project needs:
  • 6mm – Coil Length: 800m
  • 10mm – Coil Length: 800m
  • 15mm – Coil Length: 360m
  • 20mm – Coil Length: 200m
  • 25mm – Coil Length: 100m
  • 30mm – Coil Length: 100m
  • 40mm – Coil Length: 100m
  • 50mm – Coil Length: 100m

For detailed information regarding the warranty of SpECcord, please contact our SMCC team using any of the available contact methods on this page.

Product FAQ

SpECcord is typically used in joints for concrete, blockwork, and brickwork, as well as in precast panels made from GRC and GRP. It is also suitable for metal cladding panels, aluminium and concrete structures, non-structural glazing, floor and roof joints with cold applied sealants, and door and window frames.
To install SpECcord correctly, first select the appropriate diameter, which should be about 25% larger than the joint width for a tight fit. Next, push-fit the cord into the sealing slot using a blunt tool to avoid causing any damage. Ensure any required primer is applied and dried before installation. Finally, maintain sufficient depth for the sealant as advised by the sealant manufacturer. Avoid cutting the cord to ensure optimal performance.
SpECcord is available in diameters of 6mm, 10mm, 15mm, 20mm, 25mm, 30mm, 40mm, and 50mm.
SpECcord offers several advantages, including cost-effectiveness, non-hazardous properties, easy installation, excellent absorption, good chemical resistance, and it acts as a bond breaker to eliminate three-way sealant adhesion. Additionally, it is not impaired by climatic extremes and provides minimum strain shape for sealants, ensuring reliable performance in various sealing applications.
SpECcord is compatible with concrete, blockwork, brickwork, GRC, GRP, metal cladding panels, and door and window frames when using cold applied sealants.
The application temperature range for SpECcord is 5°C to 45°C.

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