{"id":7683,"date":"2026-02-28T14:00:57","date_gmt":"2026-02-28T06:00:57","guid":{"rendered":"https:\/\/meettfit.com\/?p=7683"},"modified":"2026-03-04T18:09:39","modified_gmt":"2026-03-04T10:09:39","slug":"why-thickness-alone-does-not-guarantee-soundproofing","status":"publish","type":"post","link":"https:\/\/meettfit.com\/es\/base-acustica\/por-que-el-grosor-por-si-solo-no-garantiza-el-aislamiento-acustico\/","title":{"rendered":"Por qu\u00e9 el grosor por s\u00ed solo no garantiza el aislamiento ac\u00fastico"},"content":{"rendered":"

El grosor no es el factor principal en la insonorizaci\u00f3n, porque la densidad y el desacoplamiento importan m\u00e1s. Un material grueso pero ligero deja pasar f\u00e1cilmente las vibraciones. Un aislamiento ac\u00fastico eficaz requiere un caucho de gran masa que absorba la energ\u00eda del impacto y rompa la conexi\u00f3n mec\u00e1nica entre las capas del suelo.<\/strong><\/p>\n

I see this mistake every day on the factory floor. Customers always ask for the thickest 12mm mat because they think it works twice as well as the 6mm version. That is just not how sound works. In my lab tests, a 5mm high-density rubber mat almost always beats a 10mm soft foam mat. The foam has too much air. Air doesn’t stop sound; mass does. High-density rubber is "limp mass," which means it stays heavy but flexible. It kills the vibration instead of letting it ring like a bell. If you only look at the thickness on the ruler, you are missing the material science that actually keeps the room quiet.<\/p>\n

\"alfombrilla<\/p>\n

Quiero que entiendas c\u00f3mo se comportan los distintos ruidos. Evaluaci\u00f3n de \u00bffunciona la insonorizaci\u00f3n de un suelo?<\/a> for your specific layout is the first step to ensure you don’t waste money on thick materials that do nothing.<\/p>\n

\u00bfConoce la diferencia entre ruido a\u00e9reo y ruido de impacto?<\/h2>\n

El ruido a\u00e9reo viaja a trav\u00e9s del aire, mientras que el ruido de impacto viaja a trav\u00e9s de la estructura del suelo. Las alfombrillas de caucho amortiguan principalmente el ruido de impacto mediante la amortiguaci\u00f3n de las vibraciones producidas por las pisadas o la ca\u00edda de objetos. Comprender esta diferencia es el primer paso para elegir el producto adecuado para las necesidades espec\u00edficas de su proyecto.<\/strong><\/p>\n\n\n\n\n\n\n
Tipo de ruido<\/th>\nEjemplos de fuentes<\/th>\nSoluci\u00f3n primaria<\/th>\nAlfombrilla de goma Role<\/th>\n<\/tr>\n<\/thead>\n
En el aire<\/strong><\/td>\nVoces, TV, M\u00fasica<\/td>\nMasa y estanqueidad<\/td>\nBloquea las ondas sonoras<\/td>\n<\/tr>\n
Impacto<\/strong><\/td>\nPisadas, Muebles<\/td>\nDesacoplamiento\/Amortiguaci\u00f3n<\/td>\nAbsorbe las vibraciones<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Impact noise is the biggest headache for my clients. When someone walks in heels on a hard floor, that energy vibrates the whole building frame. If your underlayment is thick but too "springy," it creates a drum effect. I have inspected jobs where the thick mat actually made the noise louder at certain low frequencies. It acted like a trampoline for sound waves. To stop this, the mat needs the right "Shore A" hardness. It has to be firm enough to support the floor weight but soft enough to break the vibration path. We test this hardness on every batch to make sure the mat doesn’t become a bridge for noise.<\/p>\n

El problema de las alfombrillas blandas<\/h3>\n

A mat that is too soft will compress over time under the weight of furniture. When it flattens out, you lose the soundproofing benefit. I always tell installers that a thinner, denser mat is more stable for the final floor finish like LVT or hardwood. You get better sound numbers and a floor that doesn’t bounce when you walk on it.<\/p>\n

\"vibraci\u00f3n<\/p>\n

Now let’s look at why density is the number I check most often in the quality lab.<\/p>\n

\u00bfPor qu\u00e9 la densidad siempre triunfa sobre el grosor en mis pruebas de laboratorio?<\/h2>\n

Una densidad alta significa m\u00e1s masa en un espacio m\u00e1s peque\u00f1o, lo que es mejor para bloquear el sonido. Una alfombrilla de goma fina y pesada tiene m\u00e1s \"capacidad de amortiguaci\u00f3n\" que una gruesa y ligera. Esto permite a la alfombrilla convertir las vibraciones sonoras en peque\u00f1as cantidades de energ\u00eda t\u00e9rmica en lugar de dejarlas pasar.<\/strong><\/p>\n\n\n\n\n\n\n\n
M\u00e9trica<\/th>\nGoma de alta densidad (5 mm)<\/th>\nEspuma de baja densidad (10 mm)<\/th>\n<\/tr>\n<\/thead>\n
Peso por metro cuadrado<\/strong><\/td>\nAlta (aprox. 0,8 lb)<\/td>\nBajo (aprox. 0,2 lb)<\/td>\n<\/tr>\n
Clasificaci\u00f3n CII<\/strong><\/td>\n52 – 55<\/td>\n42 – 45<\/td>\n<\/tr>\n
Amortiguaci\u00f3n<\/strong><\/td>\nExcelente<\/td>\nPobre<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

En nuestra f\u00e1brica, pesamos cada rollo de caucho. Si el peso es bajo, el aislamiento ac\u00fastico falla. Una alfombrilla de 5 mm fabricada con caucho reciclado est\u00e1 llena de part\u00edculas pesadas. Cuando el sonido choca contra ella, esas part\u00edculas se rozan. Esto convierte el ruido en una peque\u00f1a cantidad de energ\u00eda t\u00e9rmica. Es un cambio f\u00edsico que los materiales finos y densos hacen mejor que los gruesos y aireados. <\/p>\n

Ingenier\u00eda de la superficie inferior<\/h3>\n

We don’t just make flat sheets. Many of our high-performance thin mats have a "dimpled" bottom. These small bumps create air gaps that decouple the floor from the subfloor. As a QC specialist, I measure these dimples to the millimeter. If they are the right shape, a 6mm mat can outperform a solid 12mm mat because there is less surface area for the vibration to travel through. This is pure engineering, and it proves that a "ruler" is the worst tool for judging soundproofing.<\/p>\n

\"estructura<\/p>\n

Las cifras de la hoja de especificaciones pueden ser complicadas, as\u00ed que d\u00e9jame que te muestre en qu\u00e9 debes fijarte.<\/p>\n

\u00bfQu\u00e9 m\u00e9tricas de rendimiento debe vigilar realmente?<\/h2>\n

You should focus on IIC (Impact Insulation Class) and Delta IIC ratings rather than thickness. IIC measures the total assembly’s ability to block impact sound, while Delta IIC tells you exactly how much the rubber mat adds to the floor. A high Delta IIC is the best proof of quality.<\/strong><\/p>\n

I spend a lot of time reading ASTM E2179 lab reports. These tell the truth. A company might claim an IIC of 70, but they tested it with a huge concrete slab and a dropped ceiling. That doesn’t help you. You need to look for the Delta ($\\Delta$) IIC. This is the rating for the mat alone. If a 5mm mat has a Delta IIC of 25, it is a world-class product. If a 12mm mat only has a Delta IIC of 15, it is just expensive trash.<\/p>\n

El mundo real frente al laboratorio<\/h3>\n

1. El objetivo de la CII<\/h3>\n

Para la mayor\u00eda de los apartamentos, se desea un IIC total de 50 o superior. Compruebo nuestras series de producci\u00f3n para asegurarme de que alcanzamos estos objetivos de forma sistem\u00e1tica.<\/p>\n

2. El factor STC<\/h3>\n

El caucho es estupendo para los impactos, pero ayuda menos con las voces (STC). Si tienes vecinos ruidosos que hablan, necesitas masa, no solo un contrapiso grueso.<\/p>\n

3. Calidad de los bordes<\/h3>\n

Compruebo que todas las alfombrillas est\u00e9n cortadas perfectamente rectas. Si hay huecos entre las alfombrillas durante la instalaci\u00f3n, el sonido se filtrar\u00e1 como el agua.<\/p>\n

The best mat in the world will fail if the installation is lazy, and thickness won’t save you.<\/p>\n

\u00bfQu\u00e9 factores pesan m\u00e1s que el grosor durante la instalaci\u00f3n?<\/h2>\n

El desacoplamiento y la calidad de la instalaci\u00f3n son m\u00e1s importantes que el grosor de la estera. Incluso una estera de 20 mm fallar\u00e1 si toca directamente las paredes o tiene huecos entre las l\u00e1minas. Debes utilizar bandas de aislamiento perimetral para evitar \"v\u00edas de flanqueo\" por las que se filtre el sonido a trav\u00e9s de la estructura.<\/strong><\/p>\n

I have been to many "failed" jobs where the mat was very thick. The problem was always the same: the installer pushed the mat right against the drywall. I call this "short-circuiting." The vibration goes from the floor, into the wall, and skips the mat entirely. It doesn’t matter if the mat is 5mm or 50mm; if it touches the wall, it is useless. You must leave a gap and fill it with a flexible sealant or use an isolation strip.<\/p>\n

La conexi\u00f3n con el subsuelo<\/h3>\n

Los subsuelos de hormig\u00f3n y madera act\u00faan de forma diferente. El hormig\u00f3n es pesado y ruidoso; la madera es ligera y rebota. Pruebo nuestras alfombrillas en ambos. Una alfombrilla de goma fina sobre hormig\u00f3n funciona de maravilla porque a\u00f1ade la \"amortiguaci\u00f3n\" de la que carece el hormig\u00f3n. En un suelo de madera, puede que necesites una alfombrilla m\u00e1s densa para a\u00f1adir masa a la madera ligera. Adem\u00e1s, nunca utilices un pegamento que se seque duro. Si el pegamento es duro, act\u00faa como un puente para el sonido. Utilice siempre un adhesivo sensible a la presi\u00f3n que se mantenga \"gomoso\" para mantener las capas separadas.<\/p>\n

\"diagrama<\/p>\n

Deje de centrarse en el grosor. F\u00edjese en la densidad, las pruebas CII y el plan de instalaci\u00f3n.<\/p>\n

Conclusi\u00f3n<\/h2>\n

El grosor es una m\u00e9trica secundaria; la densidad y la ingenier\u00eda mandan. D\u00e9 prioridad a las clasificaciones CII certificadas como inversi\u00f3n en armon\u00eda comunitaria<\/a> para garantizar a largo plazo la tranquilidad de todos los habitantes del edificio.<\/p>\n

Si necesita alfombrillas de alto rendimiento o ayuda para elegir la densidad adecuada para su proyecto, env\u00edeme un mensaje privado hoy mismo para una consulta personalizada.<\/strong><\/p>","protected":false},"excerpt":{"rendered":"

Thickness is not the main factor in soundproofing because density and decoupling matter more. A thick but light material allows vibrations to pass through easily. Effective soundproofing requires high-mass rubber that absorbs impact energy and breaks the mechanical connection between floor layers. I see this mistake every day on the factory floor. Customers always ask…<\/p>","protected":false},"author":4,"featured_media":7688,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[25],"tags":[],"class_list":["post-7683","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-acoustic-underlay"],"yoast_head":"\nWhy Thickness Alone Does Not Guarantee Soundproofing - MF FLOOR<\/title>\n<meta name=\"description\" content=\"Soundproofing science: High-density "limp mass" kills vibrations. 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