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Nusku Fireblocker is our WUI Approved paint grade siding, trim & fascia made from 100% redwood. 

We utilize a finger joint & edge glue process that allows us to recover on downfall raw material from our 

sawmill partners while ensuring a high quality finish for our consumer. We are proud that the Nusku 

Fireblocker product is manufactured from start to finish in the United States.

WUI APPROVED

Our product is approved for both siding & eave applications in high fire zones throughout the state of California

100% REDWOOD

Redwood has natural resistance to rot, decay, pests & fire which helps create superior performance without added chemicals. 

Nusku Fireblocker is an all natural wood product & thus installation is in line with industry standards. No special tooling is required.

EASY INSTALLATION

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Nusku Fireblocker is ideal for siding 

projects utilizing paint grade

SIDING

Window trim & corner boards are just

a few ways to utilize our 1x & 5/4x

TRIM

FASCIA

Fascia & belly band are common

applications on traditional craftsman

EAVE

Under eave is always a fire concern, 

thus the perfect time for Fireblocker

PRODUCT APPLICATION

Nusku Fireblocker typically fits a more tradition architectural style

such as a craftsman or modern farmhouse utilizing paint grade

NUSKU FIREBLOCKER PATTERNS

Our paint grade siding, trim, fascia & patterns line

comes with almost 80 different size & profile options.

Ensure that your craftsman style project has the 

unique look desired with endless combinations.

NUSKU FIREBLOCKER PAINT GRADE

As a paint grade product, the way Nusku Fireblocker weathers over time is largely based on the finishes & coatings that are applied following installation. We always recommend refinishing paint grade every few years for optimal performance, but can still experience minor grain raise and checking as an all natural wood product.

NUSKU FIREBLOCKER WEATHERING

The goal of the applied finishes on Nusku Fireblocker is to reduce the possibility of moisture exposure. When Redwood is exposed to excess moisture it can cause grain raise, tannin bleed & swelling. Thus, high level of moisture resistance in exterior finishes is crucial.

MOISTURE EXPOSURE

UV rays can be brutal on any paint grade finish, & thus UV inhibitors in the coating are important. Like most items left out in the sun, the material and vivid color in the paint will fade over time. We typically suggest lighter finish colors to reduce the appearance of fading. 

UV EXPOSURE

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BOARD & BATT

BEVEL SIDING

TRIM BOARDS

Nusku Fireblocker is manufactured from one-hundred percent Redwood utilizing a finger joint & edge glue process. The final step is a multiple coat priming process using our proprietary Class A primer, and thus the material delivers to your project with primer already applied.

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PRE-PRIMED MATERIAL

FINISHING OPTIONS

The Nusku Fireblocker primer is a Low VOC water based coating that was designed to work with Redwood. This provides an ideal foundation for our customer to build upon with their finish of choice. We do recommend using high quality exterior finish with UV protection.   

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Nusku Fireblocker has the most installation options of the Nusku family of brands but is incredibly easy to work with being made from Redwood. The fiber is naturally light in weight, machines very well, holds nails firmly & has incredible paint retention. This product line requires no special tooling, although we do recommend high quality hardware such as stainless steel.

INSTALLATION OPTIONS

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INTERIOR

1x6 T&G V-Groove

Interior ceilings can bring a lot of character to any room, and is perfect use of Nusku Fireblocker.

INSTALL STYLE

Stainless Steel Blind Nailed

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EXTERIOR

1x8 Bevel Siding, Trim Boards

The most popular application for our paint grade Fireblocker line is exterior siding & trim.

INSTALL STYLE

Stainless Steel Siding Nails

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MULTI-FAMILY

1x6 T&G V-Groove, Fascia

Multi-family projects typically have high code requirements & thus Fireblocker is an ideal solution.

INSTALL STYLE

Stainless Steel Siding Nails

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