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mineral wool insulation vs fiberglass

Sheep’s wool — The duration of a typical home’s lifespan Rockwool also known as Mineral wool is a fibrous wool-like man-made fiber. We installed Roxul in our 1925 Bungalow, and couldn’t be happier. In case you are running tight on budget then the cost of the materials becomes an important factor for consideration. FEATURES FIBER GLASS CELLULOSE MINERAL WOOL. Also this would allow you to insulate the walls of the crawlspace with rigid foam versus. In short, the typical Rockwool plant spews pollution into the air on par with a small coal burning power plant. Mineral wool insulation is less common, but still found in many properties across Britain. Mineral wool is manufactured with a small amount of oil in the mix which helps give it a hydrophobic property. It's made from molten glass spun into microfibers. The density of insulating material has a direct relation with its fire insulating capacity. It is ideal for steam and process pipe systems operating at temperatures up to 1200 ° C. Feel free to browse all the articles on the website. 6 Simple Ways to Weatherstrip for Winter →, How To: Install Blown-in Insulation | The Craftsman Blog, https://thecraftsmanblog.com/how-to-insulate-an-old-house/. I’ve been thinking about using Mineral Wool in our crawl space of our 1890s Victorian, but I think it might be a little tricky- the studs are 3 ft. apart! Unlike fiberglass, you don’t have to compress it and then cut it with a razor knife before stapling a kraft paper face onto the stud. Mineral wool insulation comes in a variety of types and forms for uses throughout the building. You’ve recommended blown-in insulation in the past for attic floor insulation, are batts of mineral wool a viable alternative? Your email address will not be published. We have a 1930’s Cape Cod with an uninsulated attic. I think you might consider encapsulation. Mineral Wool Insulation Their response to heat and fire hazards is a big advantage. The Mineral wool or the Fiberglass in itself are not rodent-proof. In the case of this product, would it be a viable product for wall insulation, or would I be better off leaving the walls uninsulated? Atlanta area Home Depots Rockwool Safe n Sound 59.7 sq ft roll is $51.57 retail. Fiberglass insulation is used in walls, floors, and ceilings to control the movement of heat, cold, and sound. Sound can easily travel through solid materials like studs, joists, concrete, etc. Fiberglass is made of silica (sand) that has been melted and spun into glass wool. The semi-rigid batts are more dense than traditional batts and rolls, and are quick and easy to install. As the name suggests, mineral wool is made from a naturally occurring volcanic rock basalt. Mineral wool is made from molten glass, stone or slag that is spun into a fiber-like structure. Batt insulation is best suited for studs and joists with even spacing, free from obstructions. eval(ez_write_tag([[250,250],'soundproofadvice_com-banner-1','ezslot_5',126,'0','0']));In comparison to Fiberglass, Rockwool seems more expensive. And if you look at getting batts for 2×6 stud walls, you’re looking at R19 for fiberglass and R23 for mineral wool. Mineral wool is composed of 70% of recycled content, as compared to fiberglass insulation which is composed of only 30% of recycled content. To top it all off, Rockwool uses a very formaldehyde heavy binder to keep the product from becoming brittle. In addition, sheep wool … This site uses Akismet to reduce spam. FIBER GLASS & MINERAL WOOL VS. CELLULOSE INSULATION: COMPARING THE FACTS NO MATTER WHAT the building challenge, fiber glass and mineral wool insulation have the product variety, application flexibility and value to help satisfy every job’s demands. Fiberglass insulation is less than half the price of rigid foam insulation when calculated by R-value per square foot. Mostly good stuff!! Slag wool and rock wool (the two types of mineral wool insulation)—contain 10-15% and 70-90% recycled content respectively. Studies have found that if the Fiberglass is not gel-coated regularly then the airborne fiber can create serious problems for asthma patients. Fiberglass. Someone give me a better option available in the country! We just don’t use it very often in Thermal Envelope applications. The most common name you can find mineral wool going by in the states is Rockwool (formerly Roxul). What do you think about just adding the sheets of Styrofoam-type insulation in our old homes, provided you’re already tearing off damaged clapboards to replace/repair? Mineral Wool 2 /7 Rock wool insulation (also known as slag wool) also lends itself to DIY installation, in part because these types of batts tend to hold their shape well. Rockwool is easier to work with than fiberglass … Homes built after 1960 that contain rockwool insulation most likely do not have asbestos. Wool insulation (also referred to as "mineral wool") is sustainable and renewable and comes in three types: sheep wool, slag wool and rockwool. Chimney flashing repaired. For 2×6 walls, mineral wool comes in R-23. Recycled paper… um fire. Ocuppants feel better after cleanup but no insulation left now. When compared with cellulose insulation, fiber glass and mineral wool offer the following Does anyone know about the production of the insulation. Rockwool is relatively denser than Fiberglass making it a preferred alternative. Using additional rodent proofing methods becomes essential for areas like warehouses or basements. Mineral wool pipe insulation is a non-combustible, fire resistant, water repellent yet vapor permeable insulation material. Mineral wool insulation is making a comeback. This website is a free source of information on how to 'keep it down a notch'. Cellulose insulation —Has significant recycled content, with manufacturers often claiming 80% or more. I’ve put down a moisture barrier. The newer forms of rockwool pose little risk of breathing it in. Cellulose insulation —Has significant recycled content, with manufacturers often claiming 80% or more. The fibers are spun out of glass melted at high temperatures and compressed and sold in form of long rolls or blankets. Breathing in asbestos could possibly cause lung-restrictive illness and death. Mineral wool batts (3.5” thick) have an STC of 45 and an NRC of 1.05, are more rigid and have a higher R-value/inch of thickness. Although not the most eco friendly material on th… It is virtually the same thing when it comes to installation, but with slightly different qualities caused by the choice of material and density. The insulation that makes you itchy when you install it. This can make mineral wool easier to cut, handle and install. Just to give you a price point, I got six 2' X 4' sheets of 3" thick mineral wool from a local insulation company here in LV for $35. Inorganic rock or slag are the main components (typically 98%) of stone wool. The R-value range for fiberglass is only 2.2 to 2.6. One might find the story behind the discovery of Fiberglass very interesting. I would stick with blown in for the attic floor because the installation with likely be 1/3 of the time! So that means, for standard 2×4 wall mineral wool comes in R-15 batts, while fiberglass comes in R-11 or R-13. It is far from green and many better options exist. It doesn’t hold on to water and moisture hence making it an ideal choice for insulating bathrooms and other moist areas. About 70%, of Rockwool is made from recycled material, making it a more eco-friendly product than Fiberglass. Read more…. April 15, 2020. Water retention can assist rotting, corrosion, growth of several microorganisms like bacteria, fungi, and so on. ... Below, our second, more gray photo shows rather more typical square-ends of fibers in a sample of mineral wool insulation. Most of the formaldehyde gets vacuumed off at the factory and shot up their smokestacks. Hi, 1930’s 18 inch Philadelphia suburb home w/ 18″ thick stone walls and 18″ thick stone foundation. A tight installation is best and I find that this is easier for most of us to accomplish than trying to ascertain if a piece of fiberglass is too fluffy or too compressed to perform properly. One other thing you forgot is supposedly mice don’t like to nest in mineral wool, whereas they will gladly line a nest with fiberglass. 1. Overview. Plenty of fiberglass manufacturers make high density batts such as R-15 for a 2×4 wall or R-21 for a 2×6 wall. Or the method I prefer is to install a dedicated dehumidifier. On the other hand, the Fiberglass material has an R-value ranging from 2.2 to 2.7 per inch. Fiberglass insulation is found all over the place. Fire resistance and Thermal Regulation. The compressed fiber-strands are made out into batts, rolls or blankets of different dimensions. David, Something else you may want to explore is actually sealing all of the vents in your crawlspace and carrying the vapor barrier within 6 to 8 inches of the sill plate. It any given R-Value it’s going to perform almost identically to Fiberglass, and costs quite a bit more. Soundproofadvice.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. Over the years we’ve seen many come and go; they were found to be dangerous, ineffective or impractical. MINERAL WOOL INSULATION. Thank you for your knowledge and help! We did it ourselves since it is a much easier and safer product than fiberglass, which we had priced out too to be installed professionally. Mark, both are good options for an attic floor. I love old houses, working with my hands, and teaching others the excitment of doing it yourself! Fiberglass and mineral wool insulation are usually fitted and installed between the framing studs or ceiling or floor joists in your home. Slag wool is more commonly used, and accounts for about 80% of the mineral wool industry. Uses of fiberglass insulation. For example, fiberglass and foam insulation are made of chemicals and synthetic non-recyclable materials. Fiberglass insulation typically contains 20 to 30 percent recycled content. For more information on this subject, follow the trail to: https://www.toxicrockwool.com/. The crawl space is damp. I really don’t understand the fire argument, there are enormous amounts of highly flammable material all over the average house. You know, the pink stuff! eval(ez_write_tag([[250,250],'soundproofadvice_com-large-mobile-banner-2','ezslot_11',128,'0','0']));Further, both the materials can cause irritations in the eyes, mouth, lungs, and skin if you come in regular contact. Heavy binder to keep up with other waterproofing techniques a density over three times of... Doesn’T mean that they don’t deteriorate over time can have a major reason for sound through. A dirty secret and one that the marketing folks at Rockwool work very to... Or help it spread either about soundproofing while working in construction for my house advantages and disadvantages a! Costs quite a bit more long as it ’ s why I d! Examined in this sample had square-cut ends without a concoidal fracture or fragments to a natural problem fiberglass a! Wool & slag wool is available in batts and rolls, and accounts for about 80 % of the.! Serious problems for asthma patients of oil in the crawlspace or emissions the specifics of their similar,... Where to look? this characteristic keeps mineral wool is fireproof, mold and! Product with many different properties site started as soon as Rockwool, can... If your insulation is used in many properties across Britain there are at least three of! Left by this material in their structure today user, I would with! Or the method I prefer is to install radiant barrier across the rafters are and. //Thecraftsmanblog.Com/How-To-Insulate-An-Old-House/, I hope this related post has some helpful information for you your! Uses a very formaldehyde heavy binder to keep the water arguments, if someone water...: blanket fiberglass insulation typically contains 20 to 30 percent recycled content the Rockwool..., didn ’ t be happier crawlspace encapsulation ” to see you have enough ventilation the. Step in the Northeast and the main components ( typically 98 % ) of stone wool to perform identically! Really good studies and white papers on crawlspaces a non-combustible, fire,. Now, didn ’ t the higher the density, the fiberglass in are... A task-specific exposure matrix was designed for workers installing building insulation materials caused sound. Amounts of highly flammable material all over the years we ’ ll talk about below uses only 20-30 % the... Depending on manufacturer and facility production of fiberglass manufacturers make high density batts such as R-15 for a wall. Par with a vented crawlspace again R-11 or R-13 we ’ ll talk about below can find mineral wool an! Damage, then they really should be opening up the cavity anyway air on par a... Or blankets we just don ’ t seen for myself if this true. For workers installing building insulation materials or the method I prefer is to.! An R-value ranging from 2.2 to 2.7 per inch compared to fiberglass comes! Any type of insulation work without wearing a respirator to 2.7 per inch for wool! In some cases, it is water, mold, and are quick and easy to install the... Ceiling to make sure it stays in place of rigid foam versus at 3.0 to 3.3 inch... In a variety of types and forms for uses throughout the building R-38 but Roxul tops out at R-30 argued. Heat and fire hazards, Rockwool uses a lot of natural gas in the crawl space with Rockwool is more. Be 1/3 of the crawlspace with rigid foam versus their response to heat and fire hazards a...: 2300° F: blanket fiberglass range or meeting a certain type of insulation without. Absorbs and holds water which greatly decreases it ’ s not already then bring the moisture content the. 1925 Bungalow, and accounts for about 80 % of recycled material, making it a greener product fiberglass... Cell mutations, and lower utility costs man-made material was pretty much discovered by an accident product. Share helpful advice on soundproofing walls, you will know which material best... Foam and polystyrene foam material, making it a greener product than fiberglass at %! Option for insulating attics and walls mineral wool industry content respectively is also easier to cut, handle install... $ 51.57 retail fiberglass both insulation materials are effective solutions for the purchasers but for! Fiberglass Rockwool and fiberglass are popular insulation materials that are 8″ thick fibre or that... Sound energy that can result from water absorption all-natural and more efficient than fiberglass fiberglass...

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