DOWSIL 813C Construction and Concrete Silicone Sealant

Neutral silicone sealant for construction and concrete applications.

DOWSIL 813C Construction and Concrete Silicone Sealant is a one-part, neutral-curing silicone sealant designed for high-performance sealing in various construction applications. Known for its exceptional adhesion to diverse substrates, it ensures durability and flexibility, accommodating joint movement and weather extremes.

This versatile sealant meets stringent industry standards, making it suitable for both interior and exterior use in construction projects.

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Technical Details

The DOWSIL 813C Construction and Concrete Silicone Sealant is designed for a variety of applications, including:

External weather seals in buildings.
Expansion joints in construction projects.
Perimetral joints in structures.
Sealing pedestrian walkways.
Traffic roads that do not involve immersion in fuel.

The DOWSIL 813C Construction and Concrete Silicone Sealant offers numerous advantages that make it an ideal choice for a wide range of construction applications:

Good unprimed adhesion to various substrates.
Neutral cure with low odor, enhancing user comfort.
Conforms to ISO 11600-F-25LM, ensuring high-quality performance standards.
Meets the requirements of EN 15651-4 and EN 14188-2 class A for durability.
Resistant to ozone, ultraviolet radiation, and extreme temperatures, providing long-lasting protection.
Joint movement capability of ±50%, accommodating structural movements.
Excellent weatherability; virtually unaffected by sunlight, rain, snow, and extreme temperatures down to -40°C.

The DOWSIL 813C Construction and Concrete Silicone Sealant is characterized by a variety of technical properties that ensure its effectiveness and reliability in construction applications:

Test Property	Unit	Result
Cure system	—	Alkoxy
Service temperature	°C	-40 to +150
Application temperature	°C	+5 to 50
Specific gravity (CTM 97B)	—	1.51
Extrusion rate (CTM 364C)	g/minute	240
Skin-over time (CTM 98B)	minutes	20
Tack-free time (CTM 95A)	minutes	30
Cure rate (CTM 663A) 1 day	mm	2.0
Cure rate (CTM 663A) 3 days	mm	4.0
Modulus 100% (CTM 137A)	MPa	0.45
Tensile strength (CTM 137A)	MPa	1.9
Elongation at break (CTM 137A)	%	700
Hardness (Shore A) (CTM 99E)	—	29
Elastic recovery (ISO 7389)	%	> 90
Joint movement capability (ISO 9047)	%	±50

DOWSIL 813C Construction and Concrete Silicone Sealant is a versatile product suitable for various applications in construction. It excels in both interior and exterior settings, providing reliable sealing solutions across multiple scenarios.

External Weather Seals:
DOWSIL 813C is ideal for use as an external weather seal in buildings, preventing water ingress and enhancing energy efficiency.
Expansion Joints:
This sealant is specifically designed to accommodate movement in expansion joints within construction projects, ensuring long-lasting performance.
Perimetral Joints:
It effectively seals perimetral joints in structures, providing essential protection against environmental elements.
Pedestrian Walkways:
DOWSIL 813C is suitable for sealing pedestrian walkways, delivering durability and safety for public use.
Traffic Roads:
The sealant can be used in traffic roads that do not involve immersion in fuel, maintaining integrity under varying stress conditions.

With its good adhesion to multiple surfaces, the DOWSIL 813C Construction and Concrete Silicone Sealant is an essential choice for diverse construction applications.

DOWSIL 813C Construction and Concrete Silicone Sealant is supplied in the following packaging:

310 ml cartridges packed in boxes of 12.
600 ml sausages packed in boxes of 20.

For more information regarding the warranty of DOWSIL 813C Construction and Concrete Silicone Sealant, please contact our team at SMCC using any of the contact methods available on this page.

Product FAQ

Can it be used on all substrates?

No, it should not be used on bituminous substrates or certain flexible plastics.

Is it suitable for extreme weather conditions?

Yes, it is highly resistant to extreme weather conditions, including temperatures down to -40°C and exposure to sunlight, rain, and snow.

Is it resistant to UV radiation and ozone?

Yes, it is resistant to UV radiation and ozone.

What is the joint movement capability?

The joint movement capability of DOWSIL 813C is ±50%.

How does it perform in high temperature applications?

DOWSIL 813C performs effectively in high temperature applications, with a service temperature range of -40°C to +150°C, ensuring durability and flexibility under extreme conditions.

What is the application temperature range?

The application temperature range for DOWSIL 813C is +5 to 50°C.