Fumes + Formaldehyde Blocker, by Healthier Homes (1 gallon)
Preventing formaldehyde and chemical fumes in indoor air is a challenge, so we developed Fumes + Formaldehyde Blocker, a clear non toxic wood sealer! It seals OSB, plywood, foam, lumber, subflooring, roof decking and more. We spray the entire cavity of a home after framing is complete. This formula is also great to block emissions from MDF, OSB and particle board inside cabinets and furniture.
Introducing Healthier Homes Fumes + Formaldehyde Blocker, your answer to building a wellness-integrated living environment. This multi-use, water-based, low-gloss clear sealer penetrates porous surfaces such as lumber, OSB, concrete, and foam insulation.
As builders, we use it to seal the entire inside cavity of a home once the framing, roof decking and spray foam are complete.
This eco friendly wood sealer is engineered to reduce toxic out-gassing and odors. It is highly effective at encapsulating formaldehyde fumes and wood terpenes (wood smell) and provides an additional barrier against moisture damage and mold.
- Blocks formaldehyde off-gassing and odors
- Apply to framing lumber, OSB, MDF, plywood, particle board
- Provides a barrier against moisture, mildew and stains
- Improves adhesion + bonding of coatings and adhesives
- Safe, nontoxic, water-based formula
- Spray, brush, or roll on
- 1 gallon, or 4 fl oz sample sizes
- Samples ship free
The Fumes + Formaldehyde Blocker is part of the Healthier Homes line of premium-quality, fast-curing, durable interior surface finishes. This clear non toxic sealer formula is designed for optimal indoor air quality and minimal exposure to chemical toxicity for residential, commercial and DIY projects.
All Healthier Homes construction products are formaldehyde free and are formulated to block most odors and off-gassing of hazardous air pollutants (HAPs) for a healthier home and indoor environment.
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Important:
Fumes + Formaldehyde Blocker is best used on raw or unfinished surfaces.
For fume-blocking clear coat performance on finished surfaces (ie. wood furniture, stained cabinets, painted surfaces)— use Clearly Natural Clear Coat or Clear Coat Pro.

















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