SIKA · AUTHORIZED PROJECT DISTRIBUTOR · SPACE ARC ENGINEERING
Sikafloor-161 HC
Multi-purpose low-viscosity epoxy primer and mortar binder
Product Overview
Sikafloor-161 HC is a two-part, low-viscosity, solvent-free epoxy resin that works as both a versatile primer and a binder for levelling mortars and screeds. Its low viscosity drives deep penetration into concrete, cement screeds and epoxy mortars, anchoring subsequent layers with high bond strength. It is the standard primer beneath Sikafloor-264 HC N self-smoothing toppings and serves equally as an intermediate layer, a bonding bridge and the binder in epoxy levelling mortars. Supplied in a 20 kg set (15.8 kg Part A plus 4.2 kg Part B) at a 79:21 mix ratio, it cures quickly with short waiting times. Space Arc Engineering, an authorized Sika distributor in India, supplies Sikafloor-161 HC to flooring contractors as the dependable foundation layer for high-performance epoxy floor systems.
Features & Benefits
- Low viscosity for deep penetration and strong mechanical keying into concrete
- Solvent-free formulation at around 100% solids for a healthier installation
- Tensile adhesion above 1.5 N/mm, anchoring toppings firmly to the substrate
- Genuinely multi-purpose: primer, bonding bridge, intermediate layer and mortar binder
- Short waiting times help keep flooring projects moving on schedule
- Compatible base layer for Sikafloor-264 HC N and other MultiDur systems
Technical Highlights
| Coverage | Priming 0.25-0.50 kg/m and bonding bridge 0.25-0.50 kg/m; levelling mortar around 1.7-1.8 kg/m/mm and epoxy screed about 2.2 kg/m/mm. |
| Strength | Compressive strength about 50 N/mm and flexural strength about 30 N/mm at 28 days (+27C); tensile adhesion above 1.5 N/mm. |
| Performance | Shore D hardness near 76 with mixed-resin density about 1.45 kg/L; short-term heat resistance up to +60C. |
| Application Conditions | Apply at +10C to +30C ambient and substrate, relative humidity up to 80%, substrate moisture below 4% by mass. |
| Packaging | Supplied as a 20 kg set: Part A 15.8 kg and Part B 4.2 kg, mixed at 79:21 by weight; 12-month shelf life. |
Applications
- Priming concrete and cement screeds ahead of epoxy floor toppings
- Bonding bridge between fresh repair mortar and existing concrete
- Binder for epoxy levelling mortars and screeds 15-20 mm thick
- Sealing low-to-medium absorbent substrates before resin coating
- Intermediate layer in multi-coat industrial flooring build-ups
SPACE ARC ENGINEERING · AUTHORIZED DISTRIBUTOR
Product image & sample available on request
Technical Data
| Type | Two-part epoxy primer / binder |
| Base | Solvent-free epoxy resin (~100% solids) |
| Mixing ratio | A:B = 79:21 by weight |
| Pack size | 20 kg set (15.8 kg A + 4.2 kg B) |
| Compressive strength | ~50 N/mm (28 d, +27C) |
| Pot life | ~25 min at +20C |
Datasheet & Documents
Request the Technical Data Sheet, method statement and safety data sheet from Space Arc Engineering.
Request Quote / Availability
+91 9999155255
+91 7290089007
info@space-arc.com
Frequently Asked Questions
What is Sikafloor-161 HC used for?
It is a multi-purpose epoxy that primes concrete and cement screeds, acts as a bonding bridge and intermediate layer, and serves as the binder for epoxy levelling mortars and screeds.
What is the mixing ratio and pack size?
It is supplied as a 20 kg set, with Part A at 15.8 kg and Part B at 4.2 kg, mixed at a ratio of 79:21 by weight.
How much Sikafloor-161 HC do I need for priming?
Priming consumption is typically 0.25-0.50 kg/m depending on substrate porosity; mortar and screed binder rates are higher. Refer to the TDS for project-specific figures.
Is Sikafloor-161 HC solvent-free?
Yes. It is a solvent-free epoxy at around 100% solids, with low viscosity for deep penetration and tensile adhesion above 1.5 N/mm.
Who supplies Sikafloor-161 HC in India?
Space Arc Engineering, an authorized Sika distributor in India, supplies Sikafloor-161 HC with technical support. Call +91 9999155255 or email info@space-arc.com.
Related Products
- Sikafloor MultiDur ES-20 AP — A 2 mm self-smoothing system that uses this primer as its base.
- Sikafloor-264 HC N — The epoxy topping primed with Sikafloor-161 HC.
- Sika Quartz-02 IN — Graded quartz aggregate for epoxy mortars bound with this resin.
- Sikafloor-169 — A transparent epoxy binder for quartz mortars and seal coats.
Buy Sikafloor-161 HC — Sika Distributor in India
Space Arc Engineering is an Authorized Project Distributor supplying Sika products for infrastructure, industrial, commercial and residential projects across India.
+91 9999155255 | +91 7290089007 | info@space-arc.com