You may wish to use an underlayment with some additional cushion when installing vinyl flooring over a concrete subfloor. In addition, you may want one that provides some additional moisture protection, as well as some insulation. With concrete subfloors, a cushiony underlayment, such as foam or cork, is recommended.
If your planks already have a pad-attached underlayment, you most likely won't need an underlayment. However, if your flooring manufacturers installation instructions allow for an extra underlayment, adding an extra underlayment will provide improved sound reduction, insulation, and moisture protection.
Rigid Vinyl Plank Flooring
SPC Floors: These rigid floors often work best with softer underlayments made of foam, felt, or cork. These materials provide cushioning and help absorb sound, enhancing the floor's performance.
The short answer would be no, but there are a few exceptions where underlay may be necessary. Generally speaking, the design of vinyl flooring prevents any need for underlay. This is because vinyl flooring comes with a base layer that already acts as an underlay, removing the need for any additional flooring aids.
Prep your subfloor so it's clean, dry and level within 3/16-inch change per 10 feet. Use a self-leveler on low spots and/or sand high spots of wood or concrete. Don't sand old vinyl flooring as it may contain asbestos.
If the vinyl flooring product you choose doesn't have an attached underlayment, you can almost always install directly over the subfloor without one.
For any flooring that requires a floating installation method, be laminate or vinyl planks, use a 6 mils (or thicker) plastic sheet as a moisture barrier.
The best material to put under vinyl flooring depends on your needs. Foam underlay is popular for comfort and insulation, while cork provides excellent soundproofing. A thin plywood layer is often recommended for uneven subfloors to create a smooth surface before installing the vinyl.
Unfortunately, adding insulating underlayment under vinyl flooring will cause the flooring to be unstable. Because vinyl flooring isn't made from wood products, it does not have the same structure that laminate flooring does.
Foam core backing is a popular underlayment choice for vinyl flooring, because it provides thermal insulation and acoustic isolation. Foam core is typically made from polyurethane, and it is available in both high and low density varieties.
Underlayment is not required if the vinyl flooring will be laid over a cushion-backed vinyl floor or a tile floor below grade. In all other applications, however, you should use one, such as covering existing hardwood floors, vinyl flooring without cushion, and concrete floors.
Before you put down your new floors, underlayment is a great way to ensure your subfloor will be level.
If water has seeped under the flooring, it's crucial to dry out the subfloor completely before reinstalling the vinyl. Use fans, dehumidifiers, or professional drying equipment to ensure all moisture is removed.
Pre-attached underlayment is a fantastic padding option for many people and is highly recommended for all those thinking of foregoing underlayment but don't feel entirely confident that they'll do well without that layer between subfloor and surface floor. Why? Its affordability and convenience are both huge reasons.
When you walk on tile, you are pushing it down into the adhesive, and if the tile is not conformed, you are pushing it into contact with the adhesive which causes the clicking/crackling sound. To fix this, you can usually heat the area for at least a day, and then roll the tile using a 100-pound roller.
Conclusion: We recommend to at-least install a 6-mil vapor barrier underneath. Our MoistureBlock 6 mil vapor barrier is designed specially to block moisture from reaching your floor.
Felt underlayment is a popular choice for vinyl plank flooring due to its affordability and ease of installation. It is made from recycled materials and offers excellent noise reduction properties. Felt underlayment also provides a slight cushioning effect, making your floors more comfortable underfoot.
Rubber, both the natural and synthetic, is not safe to use with vinyl floors because it reacts with the chemicals found in vinyl and causes staining. Heat from sunlight or even the friction of foot traffic on rubber-backed rug pads causes this chemical reaction.
Underlayment is needed if you're going to install vinyl plank flooring over tile, vinyl flooring, and even hardwood. As mentioned, with the plywood floor, there's no need to worry about a moisture barrier; the underlayment should provide cushioning and sound-deadening benefits.
Typically, moisture barriers are needed when vinyl flooring is installed on top of a concrete subfloor or crawl space. Please refer to the manufacturer guidelines, installation instructions, and warranty information for more details.
Cork underlayments have shown to have a clearly superior performance when compared to the 100% foam-based solution, maintaining their characteristics.
Mold Growth: Mold can thrive under vinyl plank flooring due to moisture. Health Risks: Exposure to mold can lead to respiratory issues, allergies, and more serious health conditions. Vinyl Plank Flooring: While durable and versatile, can be a breeding ground for mold if not properly maintained.
Materials and Installation: Underlayment materials vary based on flooring type and performance needs, whereas vapor barriers are typically constructed from moisture-resistant materials like polyethylene or specialized membranes.
Accidents, abuse or misuse; • Extreme heat or cold; • Scratching, impact or cutting; • Improper workmanship or installation not in accordance with Dezign North America installation instructions; • Improper maintenance; • Improper fabrication; • Freight damage; • Damages by acts of God; • Planks coming apart at the ...