Semi-transparent series

LSS Formula | Semi-Transparent Series

You have just found the best log home and wood siding stain and sealer on the market. Timber Pro’s Log & Siding Formula will deliver superior wood protection for all types of exterior wood siding such as cedar, fir, pine, redwood, cypress, teak, mahogany and more.

At Timber Pro, we are pioneers in the development of environmentally safe, oil based yet nonflammable wood finishes, and have been creating safe and highly durable wood care products for over 20 years. We are always at the forefront of research and development.

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$97.00
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Select size:
1 gallon
2 gallons
3 gallons
4 gallons
5 gallons
Select 4 colors:
1 gallon
2 gallons
3 gallons
4 gallons
5 gallons
Select color tint:
Acorn
Atlantic Gray
Bertero Blaze
Blue Heron
Blue Ridge Gray
Blue Spruce
Butternut
Caramel
Ebony
Light Oak
Mahogany
Mocha
Parchment
Pavestone Red
Rosewood
Sage
Smoke Blue
Taluswood
Teak
Whitewash
Select color tint:
Acorn
Acorn
Atlantic Gray
Atlantic Gray
Bertero Blaze
Bertero Blaze
Blue Heron
Blue Heron
Blue Ridge Gray
Blue Ridge Gray
Blue Spruce
Blue Spruce
Butternut
Butternut
Caramel
Caramel
Ebony
Ebony
Light Oak
Light Oak
Mahogany
Mahogany
Mocha
Mocha
Parchment
Parchment
Pavestone Red
Pavestone Red
Rosewood
Rosewood
Sage
Sage
Smoke Blue
Smoke Blue
Taluswood
Taluswood
Teak
Teak
Whitewash
Whitewash
Option Name 3
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Plant based oil
Plant-based ingredients
Human & animal safe
Ultra-low/No VOC substance
Discounted Freight
On orders over 23 Gallons
Made in the USA
Made in the pacific northwest

LSS Formula | Semi-Transparent Series

Product overview

LSS is a high-performance, plant-oil-based, waterborne, penetrating woodstain formulated specifically for smooth milled exterior siding and interiorarchitectural wood surfaces such as beams, trim, and paneling. Designed forprofessional results in both residential and commercial settings, LSS providesoutstanding UV resistance, moisture protection, Class B fire resistance (ASTME-84) and color longevity without compromising the natural beauty of the woodgrain. LSS has a rapid first coat absorption rate of 10 minutes (under idealconditions) enabling quick turnaround for prestaining machines or dynamicoperations.

While LSS performs exceptionally well on its own, prior to staining, apply Internal Wood Stabilizer (IWS) or Ember Guard (EG) beneath LSS for enhanced pigment durability, dimensional stability, rot prevention, pest deterrence, and Class A fire resistance (EG).

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Product features

• Premium durability on smooth wood

• Class B ASTM E-84 Fire Resistance (FSI = 35)

• Ultra-low smoke (SDI =10 Excellent)

• Non-toxic, water-cleanup, and ultra-low VOC

• Protects against UV degradation, moisture, and mildew

• Available in 70+ colors and custom color matching available

• Compatible with EG, IWS, and CU (interior) for enhanced performance

• Recoatable without sanding if maintained

Ideal applications

• Smooth: cedar, fir, pine, hemlock, redwood etc.

• Mass timber; commercial, residential

• Interior wood surfaces: beams, trim, ceilings, lattice, feature walls, etc.

• Exterior wood surfaces: beams, trim, siding, wood structures, etc.

• Plywood, OSB, Cork siding and other specialty wood substrates, etc.

Recommended pairings

• EG + LSS for Class A fire resistance (ASTM E-84), moisture resistance, longevity, andaesthetic durability

• IWS + LSS for superior stability, moisture resistance, longevity, andaesthetic durability

• Crystal Urethane + LSS for wipeable high touch interior surfaces

Application guides

LSS is intended for raw or properly prepped smooth wood surfaces. Not intended over surfaces previously coated with non-penetrating acrylics, latex, solid paints, or oil-based products still resisting water. For optimal results, use LSS on raw wood surfaces (kiln-dried or airdried, moisture content <14%).

LSS Formula | Semi-Transparent Series

Product overview

LSS is a high-performance, plant-oil-based, waterborne, penetrating woodstain formulated specifically for smooth milled exterior siding and interiorarchitectural wood surfaces such as beams, trim, and paneling. Designed forprofessional results in both residential and commercial settings, LSS providesoutstanding UV resistance, moisture protection, Class B fire resistance (ASTME-84) and color longevity without compromising the natural beauty of the woodgrain. LSS has a rapid first coat absorption rate of 10 minutes (under idealconditions) enabling quick turnaround for prestaining machines or dynamicoperations.

While LSS performs exceptionally well on its own, prior to staining, apply Internal Wood Stabilizer (IWS) or Ember Guard (EG) beneath LSS for enhanced pigment durability, dimensional stability, rot prevention, pest deterrence, and Class A fire resistance (EG).

View Full Guide

Product features

• Premium durability on smooth wood

• Class B ASTM E-84 Fire Resistance (FSI = 35)

• Ultra-low smoke (SDI =10 Excellent)

• Non-toxic, water-cleanup, and ultra-low VOC

• Protects against UV degradation, moisture, and mildew

• Available in 70+ colors and custom color matching available

• Compatible with EG, IWS, and CU (interior) for enhanced performance

• Recoatable without sanding if maintained

Ideal applications

• Smooth: cedar, fir, pine, hemlock, redwood etc.

• Mass timber; commercial, residential

• Interior wood surfaces: beams, trim, ceilings, lattice, feature walls, etc.

• Exterior wood surfaces: beams, trim, siding, wood structures, etc.

• Plywood, OSB, Cork siding and other specialty wood substrates, etc.

Recommended pairings

• EG + LSS for Class A fire resistance (ASTM E-84), moisture resistance, longevity, andaesthetic durability

• IWS + LSS for superior stability, moisture resistance, longevity, andaesthetic durability

• Crystal Urethane + LSS for wipeable high touch interior surfaces

Application guides

LSS is intended for raw or properly prepped smooth wood surfaces. Not intended over surfaces previously coated with non-penetrating acrylics, latex, solid paints, or oil-based products still resisting water. For optimal results, use LSS on raw wood surfaces (kiln-dried or airdried, moisture content <14%).

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Pioneering safe, durable and eco-friendly products since 1996

At Timber Pro Coatings, sustainability is our foundation. We craft high-performance, low-VOC coatings that protect wood, concrete, and the planet through green chemistry and climate-resilient innovation.

Don’t know which color or product to pick? Try out our sample packs

Mix and match coating samples and try them on your own wood to see what the final result will look like before ordering multiple gallons for your project.

"Great Products!"

Eco friendly AND durable which is hard to find with other brands out there. We use timber pro on all of our deck/ fence stain projects.
Mr. painter
Purchased:
No items found.

"Highly recommended!"

I used the Internal Wood Stabilizer on the interior of our cedar raised beds. It's an excellent product - the best food-safe waterproofing treatment that I could find. The exterior was sealed with Timber Pro UV's Deck and Fence sealer (Honey). Excellent customer service!! Knowledgeable staff and fast shipping. The best green products available!
HTM
Purchased:
Deck & Fence | Transparent Series

"Remarkable product and service!"

Super friendly and knowledgeable and helpful staff at the store. Gave me samples to try at home and made ordering our choice product easy over the phone. Worked with us and our contractor to ensure we had the right product (fence stain - Tamarack) ready for our fence project. An incredible experience with a local business. Very very happy with our results.
Scott Snyder
Purchased:
Deck & Fence | Microtint Series

Family-owned and operated since 1996

We are the only U.S. based stain company developing safe, durable and eco-friendly coatings since 1996

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