Tar paper for flooring: the very phrase might conjure images of old-fashioned construction. Moisture protection represents a critical function in subflooring, where tar paper acts as a vapor barrier. Roofing felt, often confused with tar paper, shares similar characteristics but possesses distinct qualities influencing its suitability for flooring applications. The decision to use tar paper for flooring ultimately involves considering building codes and project-specific requirements. Careful evaluation of these factors ensures a durable and properly installed floor.
Image taken from the YouTube channel Remodeling America , from the video titled Our Underlayment of Choice – Aquabar “B” .
Tar Paper for Flooring: A Comprehensive Guide
Tar paper, also known as roofing felt, has been used in construction for decades. While traditionally associated with roofing, its application extends to flooring projects as well. But is it the right choice for your flooring project? This guide examines the benefits, drawbacks, and alternatives to using tar paper for flooring, enabling you to make an informed decision.
Understanding Tar Paper
What is Tar Paper?
Tar paper is a heavy-duty paper saturated with asphalt. This asphalt saturation renders it water-resistant, making it a popular choice for underlayment and moisture barriers. It comes in rolls of varying weights and thicknesses. Common weight designations are 15 lb. and 30 lb., referring to the approximate weight per 100 square feet of material. Heavier grades generally offer superior durability and water resistance.
Why Consider Tar Paper for Flooring?
Several potential advantages make tar paper for flooring an appealing option in some situations. These include:
- Moisture Barrier: Its primary function is to act as a moisture barrier, preventing moisture from the subfloor from damaging the finished flooring material. This is particularly crucial in basements or over concrete slabs on grade.
- Sound Dampening: Tar paper can offer a degree of sound insulation, reducing impact noise transmission.
- Affordability: Compared to some specialized flooring underlayments, tar paper is typically a cost-effective solution.
- Availability: Readily available at most hardware and home improvement stores.
Evaluating the Use of Tar Paper in Flooring Applications
Potential Drawbacks
While the benefits are apparent, it’s equally vital to consider the downsides before committing to tar paper for flooring.
- Asphalt Odor: Freshly installed tar paper can emit a strong asphalt odor, which may be unpleasant, especially in enclosed spaces. This odor usually dissipates over time.
- Off-Gassing: Concerns exist regarding the potential off-gassing of volatile organic compounds (VOCs) from the asphalt in tar paper. While the levels may be low, individuals with sensitivities should exercise caution.
- Tear Resistance: While durable, tar paper isn’t exceptionally tear-resistant. Care must be taken during installation to avoid punctures or rips.
- Not a Leveling Agent: It’s important to note that tar paper does not level uneven subfloors. Any imperfections in the subfloor will still be noticeable.
Appropriate Flooring Types
Tar paper for flooring may be suitable under certain types of flooring:
- Hardwood Floors (with caution): While used traditionally under hardwood, modern breathable underlayments are generally preferred to prevent trapping moisture. If using, ensure proper ventilation.
- Laminate Floors: It can provide a moisture barrier under laminate flooring, but always check the laminate manufacturer’s recommendations for underlayment requirements.
- Vinyl Flooring (with stipulations): For some vinyl flooring types (especially sheet vinyl), tar paper for flooring may offer a suitable moisture barrier. Check manufacturer guidelines regarding underlayment suitability.
- Carpet (over concrete): When installing carpet over concrete, tar paper can act as a cost-effective moisture barrier.
Inappropriate Flooring Types
- Tile: Do not use tar paper under tile. Tile requires a rigid and stable subfloor, and tar paper lacks the necessary structural support and bonding properties. Cement board or specialized tile underlayments are essential for tile installations.
- Engineered Wood (some types): Many engineered wood flooring products require specific underlayments to maintain warranty compliance. Using tar paper may void the warranty. Always refer to the manufacturer’s guidelines.
Installation Considerations
Subfloor Preparation
Proper subfloor preparation is paramount, regardless of the chosen underlayment. Ensure the subfloor is:
- Clean: Free from debris, dust, and any contaminants that could interfere with adhesion.
- Dry: Moisture levels should be within acceptable limits for the chosen flooring material. Use a moisture meter to verify.
- Level: Address any significant unevenness with self-leveling compound or by patching low spots.
Laying the Tar Paper
- Unroll the Tar Paper: Unroll the tar paper over the prepared subfloor.
- Overlap Seams: Overlap seams by at least 4-6 inches.
- Fasten the Tar Paper: Secure the tar paper to the subfloor using staples or roofing nails. Ensure fasteners are appropriately spaced to prevent movement.
- Seam Sealing (Optional): For enhanced moisture protection, consider sealing the seams with asphalt-based sealant or tape.
Alternatives to Tar Paper
Several alternative underlayment options offer enhanced performance characteristics:
| Underlayment Type | Advantages | Disadvantages | Suitable Flooring Types |
|---|---|---|---|
| Foam Underlayment | Sound dampening, cushioning, moisture barrier (some types) | Can be more expensive than tar paper, may not be suitable for all flooring | Laminate, engineered wood, some vinyl |
| Cork Underlayment | Excellent sound insulation, natural and sustainable, moisture resistant | More expensive than tar paper, requires careful installation | Hardwood, laminate, tile (with appropriate subfloor support) |
| Rubber Underlayment | Superior sound and impact absorption, durable, moisture resistant | More expensive, can be heavy | Hardwood, laminate, engineered wood, tile (with appropriate subfloor support), gym flooring |
| Self-Leveling Underlayment | Creates a perfectly level surface, eliminates imperfections in the subfloor | Requires skilled installation, can be expensive | Tile, hardwood, laminate, engineered wood |
| Cement Board | Rigid, dimensionally stable, excellent for tile installations, water resistant | Heavy, requires specialized tools and installation | Tile |
When choosing an alternative, carefully consider the specific requirements of your flooring material and the conditions of your subfloor. Consulting with a flooring professional can provide valuable guidance.
FAQs: Tar Paper For Flooring
Here are some frequently asked questions regarding the use of tar paper for flooring to help you determine if it’s right for your project.
What exactly is tar paper, and what is it used for under flooring?
Tar paper, also called roofing felt, is a heavy paper saturated with tar or asphalt. When used as a flooring underlayment, tar paper for flooring acts as a moisture barrier, preventing water vapor from reaching the subfloor and finished floor. It can also offer a small amount of cushioning.
Is tar paper essential when installing a new floor?
Not always. The necessity of tar paper for flooring depends on several factors, including the type of subfloor (concrete vs. wood), the type of flooring you’re installing, and the climate you live in. Modern underlayments can provide superior moisture protection, but tar paper remains a cost-effective option in some cases.
Are there any drawbacks to using tar paper for flooring?
Yes, there are some downsides. Tar paper can emit a strong odor, especially in warmer temperatures. Modern alternatives often offer better sound dampening and insulation properties. It’s also important to note that some types of tar paper may contain volatile organic compounds (VOCs).
What are some alternatives to using tar paper for flooring?
Several alternatives exist, including synthetic underlayment materials, foam underlayments, and cork underlayments. These options often offer superior moisture protection, sound insulation, and comfort compared to tar paper for flooring. Consider these if you’re looking for enhanced performance and features.
So, is tar paper for flooring the right call for *your* project? Hopefully, this gives you a good start! Don’t hesitate to do more research and, as always, double-check with your local building codes before diving in.