High-Strength Sikadur Systems for Machinery Bases & Precision Grouting

When machinery is installed over a concrete foundation, the space beneath the baseplate needs more than a generic gap filler. Sika epoxy grout systems are designed for demanding grouting applications where controlled placement, mechanical performance & reliable support beneath machinery, equipment bases or other specified installations matter.

The Sikadur-42 family covers different grouting requirements rather than one universal product. Industrial Shed carries Sikadur-42 (AU), Sikadur-42 HP & Sikadur-42 HF products, including complete kits plus individual Part A resin, Part B hardener & Part C aggregate components.

Product selection should start with the application, required grout depth, operating conditions & the complete Sika system specified for the job. For installations involving existing concrete, explore Concrete Repair & Restoration. For setup & position checks around machinery or baseplates, Measuring & Leveling Tools provide related site equipment.

What Is Sika Epoxy Grout?

Sika epoxy grout is a resin-based grouting material used for high-performance filling, bedding, seating & fixing applications where the selected Sikadur system suits the installation.

Unlike conventional cementitious grout, epoxy grout uses resin-based chemistry with system-specific components.

For example, Sikadur-42 (AU) is a three-component system consisting of epoxy resin plus selected aggregate. When correctly mixed & installed, it forms a hardened grout for applications including:

► Machine bedding & baseplates
► Crane rails
► Holding-down bolts
► Starter bars
► Cavity filling
► Bridge bearing pads
► Precast grouting

Sika specifies Sikadur-42 (AU) as a high-strength, pourable, solvent-free epoxy resin grout with good flow characteristics.

What's in the Industrial Shed Sika Epoxy Grout Range?

Check whether the product you're ordering is a complete kit or an individual system component.

The current collection includes products from several Sikadur-42 systems:

An individual Part A, Part B or Part C product is not automatically a complete grout kit.

Confirm that all required components for the selected Sikadur system are available before beginning the job.

Why Choose Sika Epoxy Grout?

Purpose-Built Machinery Grouting Systems

Sika's epoxy grout range is designed around defined engineering & construction applications rather than generic filling.

Depending on the selected system, applications can include machine bases, baseplates, pumps, compressors, presses, crane rails, holding-down bolts & other precision grouting work.

High Mechanical Strength

Machinery grouting can place substantial mechanical demands on the cured material.

Sika publishes compressive-strength data for individual Sikadur systems. Sikadur-42 (AU), for example, reaches approximately 50 MPa at one day & 70 MPa at seven days under Sika's stated test conditions.

Sikadur-42 HP is a different system with higher published values plus characteristics intended for demanding equipment installations.

Always use the current product data sheet for the exact product being installed rather than transferring one Sikadur system's figures to another.

Flow Into Baseplate Voids

Good flow matters when grout needs to travel beneath a baseplate & around the prepared installation.

Sikadur-42 (AU) is formulated with good flow characteristics, while other systems such as Sikadur-42 HF are specifically designed around high-flow applications.

Correct formwork, grout head & placement technique remain important to maintaining continuous flow.

Factory-Proportioned Systems

Correct component ratios are fundamental to epoxy grout performance.

Sika supplies relevant Sikadur systems in proportioned configurations, reducing the need to estimate resin, hardener or aggregate ratios on site.

The components still need to be mixed exactly according to the current Sika instructions.

Options for Different Application Depths

Grout depth is one of the clearest reasons not to select epoxy grout by brand name alone.

Different Sikadur systems have different application ranges.

Which Sika Epoxy Grout Should You Choose?

Start with the required application depth & service conditions, then confirm the current Sika data sheet.

Sikadur-42 (AU)

A strong starting point for general machinery bedding & baseplate grouting where its application range suits the job.

Sika lists applications including:

► Machine bedding
► Baseplates
► Crane rails
► Holding-down bolts
► Starter bars
► Cavity filling
► Bridge bearing pads
► Precast grouting

Its typical application range is 10–60mm, subject to clearance, flow distance, pour size plus ambient & substrate temperature.

Sikadur-42 HP

Choose HP when the job calls for the characteristics of Sika's deep-pour precision system.

Sika positions Sikadur-42 HP for:

► Precision seating of baseplates
► Heavy-impact machinery
► Vibratory machinery
► Reciprocating engines
► Compressors
► Pumps
► Presses
► Crane rails

Sikadur-42 HP is a three-component, low-exotherm system designed for high-demand equipment.

Sikadur-42 HF

HF is the specialist high-flow member of the range.

Sika positions Sikadur-42 HF for high-flow grouting with applications including machine bedding, baseplates, crane rails, holding-down bolts & other specified civil or industrial work.

It also has specific wet & underwater capabilities that should not automatically be attributed to the other Sikadur-42 systems.

Common Applications for Sika Epoxy Grout

Machinery Baseplates

Baseplate grouting fills the designed space between the prepared foundation & equipment support plate.

The grout system, foundation, baseplate, anchors & installation procedure need to work together rather than being treated as unrelated components.

Where the installation also requires mechanical fixings, browse Bolts & Fasteners.

Pumps & Compressors

Rotating & reciprocating equipment can place demanding dynamic loads through its mounting system.

Sikadur-42 HP is specifically identified by Sika for grouting beneath equipment including pumps, compressors & reciprocating engines.

The required grout system should follow the equipment design plus the engineering or installation specification.

Presses & Industrial Machinery

Equipment with impact or vibration demands needs a grout system selected for those conditions.

Sika positions Sikadur-42 HP for high-demand equipment including presses plus heavy-impact & vibratory machinery.

Crane Rails

Crane rails appear within Sika's stated applications for Sikadur-42 (AU), Sikadur-42 HP & Sikadur-42 HF.

System selection still depends on the individual installation rather than assuming all three products are interchangeable.

Holding-Down Bolts & Anchoring Applications

Some Sikadur epoxy grout systems can be used around holding-down bolts or specified fixing applications.

The bolt arrangement, hole geometry, grout depth, substrate condition & system requirements should be established before installation.

Civil & Infrastructure Work

Depending on the selected Sikadur system, Sika identifies applications including bridge bearings, starter bars, precast grouting, cavity filling & other civil engineering work.

For surrounding concrete preparation or repair requirements, browse Concrete Repair & Restoration.

Epoxy Grout vs Cementitious Grout

The right choice depends on the engineering requirement rather than assuming epoxy is automatically better.

Follow the project specification where one grout type has already been nominated.

Changing from cementitious to epoxy grout — or from one epoxy system to another — should be a technical decision based on the installation requirements.

How Do You Choose the Right Sika Epoxy Grout?

Identify the Application

Start with what is actually being grouted:

► Machine base
► Pump
► Compressor
► Press
► Crane rail
► Baseplate
► Holding-down bolt
► Bearing or civil component
► Cavity or void

Measure the Required Grout Depth

Pour depth can immediately rule systems in or out.

Sikadur-42 (AU) is typically suited to a 10–60mm application range. Deeper applications may require Sikadur-42 HP or another system specified for the required depth.

Don't assume adding extra material makes a system suitable for a deeper pour.

Check the Operating Conditions

Consider:

► Ambient temperature
► Substrate temperature
► Moisture conditions
► Chemical exposure
► Vibration or impact
► Required flow distance
► Pour volume
► Access for mixing & placement

Confirm the Complete System

This is particularly important when buying from this collection.

Some Industrial Shed listings are individual Sikadur components rather than complete kits.

Before ordering, confirm whether you require:

► Complete A+B+C kit
► Part A resin
► Part B hardener
► Part C aggregate
► Replacement or additional components specified for that system

Never combine components from different Sikadur systems unless Sika documentation specifically permits it.

Read the Current Product Data Sheet

The data sheet should control the installation — not a general category description.

Confirm mixing ratio, application thickness, substrate preparation, pot life, temperature range, yield, curing requirements & any system-specific limitations before work begins.

Substrate Preparation Matters

High-performance grout can't compensate for unsuitable substrate preparation.

For Sikadur-42 (AU), Sika requires substrates to be sound & appropriately prepared. Contaminants such as dirt, oil, grease, old coatings, loose particles & laitance need to be removed as applicable.

Steel substrates require thorough preparation, with Sika specifying a standard equivalent to Sa 2.5 for relevant Sikadur-42 applications.

Concrete or mortar also needs to meet the product requirements before grouting begins.

Before Mixing

► Confirm substrate condition
► Remove contamination
► Check concrete age & required strength
► Prepare steel as specified
► Remove standing water where required
► Complete formwork
► Check clearances & pour depth
► Confirm sufficient grout is available for continuous placement

Mixing & Placement Considerations

Once an epoxy system is mixed, working time becomes finite.

Sika's instructions vary by product & temperature, so organise the pour before mixing begins.

For Sikadur-42 (AU), Sika instructs users to mix Components A & B before gradually adding Component C using suitable low-speed mixing equipment while avoiding unnecessary air entrainment.

Don't mix only the resin & hardener then leave them reacting together. Follow the complete manufacturer procedure.

Plan for Continuous Placement

Baseplate grouting should be planned so grout can flow continuously through the required area without unnecessary interruption.

Formwork needs to contain the grout without leakage.

For setup checks around machinery, rails or baseplates, Measuring & Leveling Tools can support dimensional & level verification before the pour.

Expert Tips for Sika Epoxy Grouting

Don't Buy by Compressive Strength Alone

The highest number on a data sheet doesn't automatically identify the correct grout.

Pour depth, flow, temperature, moisture, vibration, chemical exposure & installation geometry can be equally important.

Check the SKU Before Assuming It's a Kit

A Part C aggregate bag isn't a complete epoxy grout system.

The same applies to standalone Part A or Part B listings.

Verify exactly what is included before scheduling labour or equipment around the pour.

Prepare Everything Before Mixing

Once the epoxy components are combined, pot life begins to matter.

Have formwork, tools, access, material, PPE & placement arrangements ready first.

Allow for Temperature

Epoxy behaviour changes with temperature.

Pot life, flow & working characteristics can change significantly as site conditions become warmer or cooler.

Use the temperature limits & working-time information for the exact Sikadur system.

Don't Guess the Pour Depth

Measure beneath the complete baseplate area rather than checking one accessible edge.

An installation with substantially varying clearance may require different planning from a uniform shallow pour.

Avoid Mixing Systems From Memory

Sikadur-42 AU, HP & HF have different formulations, component arrangements & application requirements.

Keep the product data sheet for the exact system available during preparation & installation.

For practical insight into maintenance around demanding machinery, read Quarry Crews Crusher Maintenance.

What Should You Avoid?

► Don't assume every product in this collection is a complete grout kit
► Don't use Part A, Part B or Part C independently as though it were the finished grout system
► Don't transfer mixing ratios between different Sikadur systems
► Don't exceed the specified application depth without checking the current Sika instructions
► Don't grout over oil, grease, laitance, loose material or unsuitable coatings
► Don't begin mixing before formwork & placement arrangements are ready
► Don't assume every Sikadur-42 product has identical wet, chemical or underwater capabilities
► Don't select grout only by compressive-strength figures
► Don't add unapproved material or alter component ratios
► Don't rely on a category description instead of the current Sika Product Data Sheet & Safety Data Sheet