Browse Products by Technology

Browse Products by Market

Products

Brands

Formulations

Documents

Experts

For nearly 70 years, Larsen Products Corp. bonding agents have been specified by major architects, engineers and construction companies throughout the world. Our Weld-Crete® concrete bonding & repair agent and our Plaster-Weld® plaster bonding & repair agent are two of the highest quality bonding agents the industry has to offer, suitable for both commercial and residential construction, remodeling, repair, restoration & updating. Family-owned and operated for four generations, we pride ourselves on providing unparalleled customer service and support with our desire for every customer to be completely satisfied with our products, help and knowledge. Known industry-wide for their trademark pink and blue colors, our bonding agents are ideal for high performance bonding of cementitious material directly to structural surfaces and have set the standard in reliability, consistency and quality.

Privacy

Terms & Conditions

Terms of Sale

Cookie Policy

Plaster-Weld® bonds new plaster to any clean, structurally sound, interior surface. The original chemical plaster bonding agent is a patented formulation incorporating polyvinyl acetate homopolymer. Designed for Interior Use only, the high performance bonding of one-coat finish plaster and/or two and three coat work to concrete ceilings, walls, columns, beams, and other structurally sound surfaces. Plaster-Weld® prepares the surface to allow you to plaster directly to concrete over electric radiant heat cable, and to bond cement mortar beds to smooth concrete for installation of rigid foam insulation. Concrete, brick, block, glass, ceramic tile, wallboard, metals (e.g. sheet lead in x-ray rooms) and marble are suitable sound surfaces, structurally. Plaster-Weld® can be used over paints having oil, rubber or vinyl bases, and over silicone-treated surfaces, as well as latex paints.

PLASTER-WELD

Weld-Crete® bonds new concrete, stucco, tile setting beds and terrazzo to any structurally sound surface, interior or exterior. Use Weld-Crete’s® open time to your advantage in bonding to concrete shear walls when you need a time lapse between application of bonding agent, placement of reinforcement steel, placement of formwork and placement of concrete.

WELD-CRETE

Weld-Crete® is the original chemical concrete bonding agent incorporates polyvinyl acetate homopolymer in a patented formulation. Designed for exterior and interior use, Weld-Crete® will bond new concrete, Portland cement plaster, and cementitious mixes to structurally sound concrete floors, walls, columns, beams, steps and ramps. Weld-Crete® can be "painted on" in a single application 1 to 10 days prior to concrete placement.

WELD-CRETE®

Larsen Products Acrylic ADMIX-101 is an integrally added bonding agent to bond new concrete, Portland cement plaster, and mortar mixes. Acrylic Ad-Mix 101® is an organic polymer (a white, milky liquid) which is mixed with varying proportions of water according to the performance required and reates a hard, durable surface resistant to most chemicals and acids, imparts excellent water and weather resistance, improves curing qualities, and reduces shrinkage cracking.

Larsen Products ACRYLIC ADMIX-101

Plaster-Weld® The original plaster bonding agent is a patented formulation incorporating polyvinyl acetate homopolymer.

PLASTER-WELD®

Larsen Products

For nearly 70 years, Larsen Products Corp. bonding agents have been specified by major architects, engineers and construction companies throughout the world. Our Weld-Crete® concrete bonding &amp; rep

Larsen Products - Bonding Agents - Construction - Remodeling

Website

Building & Construction

Markets

With SDS

With TDS

Knowde is the first marketplace for chemicals, polymers and ingredients. Our leading-edge digital capabilities connect thousands of sellers and buyers every day.

Products - Larsen Products - Knowde

Glass

Job Title

Shipping Terms

Name

and the data associated with it — permanently.

This is a Premium Feature

Changes to filters have not been applied.

Discard changes?

{userCompanyName} notice

In order to join {userCompanyName} on Knowde, you must use your business email address.

Business already on Knowde

{userCompanyName} requires all users on {companyName} to register with their business email address to ensure confidentiality and security.

{userCompanyName} requires registering your business email address

There's only a little ways to go.

Creating an account is free and the only way to directly download documents, order samples, request quotes and use direct messaging.

Quit Sign Up?

Tell us about {userCompanyName}

from concierge@knowde.com

Click the link in the email, or enter the 6-digit code

Verification email sent

Since you’re using a personal email address, we require proof to verify the information you have provided.

Please verify your account

Please go back and enter in an email address that is directly associated with a business.

Knowde is built for businesses

Also, using a personal email for creating your {companyName} account may require additional verification of your company details.

We recommend signing up with a work email address to get faster responses, especially when requesting samples, documents, and more.

Please enter your business email address below.  We’ll send you a confirmation code to quickly verify.

Enter your business email

{companyName} uses Knowde for account management so you can manage all of your sample requests, RFQs, orders and more in one place.

Knowde is for businesses, you may have a hard time receiving responses to your requests if you use a personal email address.

to {email}

We sent an email to {email}

Please click the link to reset your password

Check your email

Create a new password

Password expired

Sign in to {companyName}

Enter a new secure password

Change your password

Enter the email address associated with your account

Reset your password

Enter your password for

Use your Knowde password to sign in:

Please provide additional information to help us verify your company.

Terms and Conditions

Compare multiple products at once and find the best fit for your project needs.

Why is this important?

Enter your password

Unlock your account

Knowde is the world’s biggest marketplace to search for ingredients, polymers, and chemistry. You can:

Welcome to Knowde

View All Products

Cart

Please fix the following before proceeding to payment

An order receipt has been emailed to {email}

Order

This feature is currently unavailable at this screen size.

Payment

Shipping

Checkout

KEEP IN MIND

You will lose any existing chat history by starting a new chat.

Start a new chat?

Compare Products

This document is restricted content.

If you believe you should have permission to this document, please request access.

Restricted Access

It only takes 60 seconds to create an account.

Available {documentType} documents for this product ({counter})

Describe Documents You’d Like to Request

Invalid job title

That’s not the reaction we were expecting.

Page not found - Store for chemicals, polymers and ingredients

Internal Server Error - Store for chemicals, polymers and ingredients

Unexpected error occurred. Please contact us.

Client Side Exception - Store for chemicals, polymers and ingredients

Show products with

Filters

Featured Products

Flavor & Taste Explorer

Flavor Families

Enter your inquiry here, include as much detail as you’re able. *

To submit an inquiry to {companyName}, please fill out the form below and click Submit. They will get back to you as soon as they’re able.

Home Page

Request samples, documents, and quotes directly from suppliers

{companyName} experts - Knowde

Knowde is the first marketplace for chemicals, polymers and ingredients. Our leading-edge digital capabilities connect thousands of suppliers and customers every day.

Chemicals Marketplace - ingredients & raw materials - Knowde

Learn how to take full advantage of the free to use tools that you have unlocked.

Explore the capabilities of the platform and get immediate assistance for your needs with one of our experts.

Schedule a Demo

You’ll meet with Kiana from our Knowde Marketplace Team

Explore the capabilities of the platform and get immediate assistance for your needs.

Learn how you can make the most of the free tools now available to you.

Explore the capabilities of the platform with our dedicated team.

Weekly Webinar

See which others might better fit your needs.

This is just one of {allProducts} products on Knowde.

BROWSE BY

Knowde for Suppliers

Most popular categories

Gain instant access to our marketplace of over 250,000 chemicals, ingredients and polymers from 8,000 suppliers. Browse, search, and filter to quickly compare products, find information, request documents, order samples, and get quotes directly from suppliers.

Search and filter over 250,000 chemicals, ingredients and polymers, access documents and download starter formulations. Interact with over 8,000 suppliers whose representatives are ready to help. Sign up for a free Knowde Marketplace account today.

Create a free account to gain instant access to our marketplace of over 250,000 products and their documents.

Get new products to market faster with a free Knowde Marketplace account

The fastest way to find the right raw materials for your products

Want to explore more products?

Popular {companyName} Products

Start Order

Get a Quote

{price} each for {name}

1 of {brandProductsCount} products in this brand

This will be used for any follow-up questions so we can best meet your needs

Please fill out the form below to help {companyName} prepare your quote

Your request has been sent to {companyName}

This information will help us get you the right materials.

All Categories

{numberOfResults, plural, one {Brand} other {Brands}}

{numberOfResults, plural, one {Product} other {Products}}

Search Tips

{charactersCounter}/{limitCharacters} Characters

Visit

Your account has been verified. You now have access to the full power of {companyName}

The quantity your business will require annually, if the sample product suits your project's needs.