About Us

Today, Eduardo and Jason in Valley Springs California, have built our reputation as a family-friendly run business, capable, reliable and always willing to go the extra mile for our customers and friends.

What We Do

We have maintained long-term relationships with the leaders in the insulation industry to ensure that you get the quality material you need to get the job done right.

Have questions about an insulation project? Call or send us a message for friendly advice or referrals to a professional in the field.

The Sequoia Insulation Difference

Ric and Londa Oller, founders of Material VenturesSequoia Insulation is a division of Material Ventures Inc. With shop locations for Sequoia Insulation currently in Valley Springs Ca. and Carson Insulation in Mound House NV. Material Ventures, founded in 1983 by Rico and Londa Oller, going from jobsite to jobsite, contractor to contractor, delivering construction materials out of the back of a pickup truck. Material Ventures Inc. is doing business as (DBA) in two yards ran by, Sequoia Insulation, Sonora Insulation, Ashlock Energy, and Carson Insulation.

Material Ventures Inc. spread through the Central Valley and Sierra Foothills of California, with a purchase acquisition of Ashlock Energy and later established a shop in the Carson Valley of Nevada.

Sequoia Insulation and Carson Insulation have established a priority for insulation sales, offering a wide variety of insulation products and services, and are continuously establishing the most sought out for, up to date, innovative industry products, services, and demands.


Sequoia Insulation’s most prominent service locations are:

  • Calaveras County
  • Tuolumne County
  • Amador County
  • San Joaquin County
  • Stanislaus County
  • Merced County
  • El Dorado County
  • Mariposa County
  • Sacramento County

Divisions of Material Ventures:

  • Sequoia Insulation
  • Carson Insulation
  • Sonora Insulation
  • Ashlock Energy

Why Sequoia Insulation


Sustainable Insulation

A part of our promise to the community is providing the best service with eco-friendly products. Learn more about EcoBatt Insulation from KNAUF.


Local Service. National Strength.

As a proud member NICE (National Insulation Contractors Exchange) Co-op, we can maintain the excellent service typical of a smaller business while having the buying power to beat the big box stores’ prices.



In addition to providing you with the finest material from leaders like KNAUF, we offer flexible delivery options to get your materials to the job site.


Special Orders

Every project is unique. Should your project have unique specs, please do not hesitate to contact us to see how we can best serve your needs.

Image of project, external insulation

Years Established


“Our mission at Sequoia Insulation is to provide expert insulation services with high-quality insulation products to our customers. Our team of experts are trained to provide exceptional services from small projects, large projects, and even those custom insulation products.

Eduardo Ramirez – Sequoia Insulation

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    Spray Foam InsulationLoose-Fill (Blow-In) InsulationDrill and Fill InsulationBatted InsulationPSK (Polypropylene Scrim Kraft) or FSK (Foil Scrim Kraft) InsulationStructural Work or Electrical Work - Insulation RemovalMold Removal - Insulation RemovalSmoke Damage - Insulation RemovalVapor and Radiant BarriersOther